Transformer Dry Type Handbook1

Relentlessly Responsive

DRY TYPE TRANSFORMER INSULATION HANDBOOK

ISO 9001: 2008 CERTIFIED FABRICATOR OF THERMAL INSULATION MATERIALS THE GUND COMPANY 2121 WALTON ROAD ST. LOUIS, MO 63114 TEL (314) 423-5200 FAX (314) 423-9009 WWW.THEGUNDCOMPANY.COM

Table of Contents I. Introduction to the Gund Company Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Our Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Primary Customer Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Transformer Insulation Components Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8

II. Transformer Coil Insulation Components Coil Insulation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Winding Bobbins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Insulating Core Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conductor Insulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Layer Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Layer Insulation Tape. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intra-Coil Phase Barriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inter-Coil Phase Barriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Winding Combs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Coil Shims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air Duct (Axial) Spacer Sticks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 11 12 13 14 15 16 17 18 19 20

III.Coil Support & Superstructure Components Coil Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Insulating Nuts & Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-27 Phase Barriers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Insulating Angles & Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Stand-off Insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

IV.Tap Changer Components Tap Changer Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

V. Material Data Sheets Laminate Sheet, Rod, & Tubing Glass Epoxy Laminate Sheet & Tubes (NEMA Grades G-10/FR4 & G-11) . . . . . . . . . . . . . . . . . 34-35

Glass Polyester Molded Insulation Materials

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Glass Polyester Molded Sheets (NEMA Grades GPO-1, GPO-2, GPO-3) . . . . . . . . . . . . . . . . . . 36-39 Glass Polyester Molded Sheet, NEMA Grade N180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Glass Polyester Molded Sheet, DuraNohl™ N220. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Glass Polyester Laminate Sheet, 220°C Grade SG-200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Glass Polyester Laminate Sheet, 220°C Grade HST-II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Glass Polyester Pultruded Angles & Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44-45 Glass Polyester Molded Stand-off Insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46-49 Glass Polyester Pultruded Shapes (Rods, Dogbones, & Squares) . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table of Contents Nomex™ Insulating Materials NomexTM Aramid Paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-53 NomexTM Paper Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Other Flexible Transformer Insulation Materials Quin-T Family of Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55-60 PolyPro FR™, Flame Retardant Polypropylene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Other Transformer Insulation Materials Glass Epoxy Filament Wound Tubing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

VI. Appendix Dry Type Transformer Kitting Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64-68 Winding Comb Order Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Application Engineering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Contacting The Gund Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

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Section I Introduction to The Gund Company

Preface The Gund Company has been in the electrical insulation manufacturing, fabrication, and distribution business for over fifty years. We have introduced the Dry Type Transformer Insulation Handbook to better serve our customers in the manufacturing and repair of dry type transformer equipment.

Section I of this handbook offers some background information on The Gund Company and the segments of the electrical industry that we serve. Sections II, III, and IV of this book contain transformer insulation application information. Section V contains the technical data sheets for transformer insulation materials and Section VI, the final section, discusses Application Engineering and contact information for The Gund Company.

This handbook is intended for manufacturing engineers, repair specialists, field service technicians, purchasing agents, shop foremen, and everyone who may be involved in the specification, selection, and use of electrical insulating materials for transformer equipment. The reader should be advised that this handbook does not represent a complete account of The Gund Company’s products and services nor a complete record of all insulation materials utilized in the many and varied transformer designs. Instead, it is meant to be a collection of technical information pertaining to the most commonly encountered insulation materials and their application in transformers. If a desired product or component cannot be found, please contact us and we can discuss potential options.

Please keep in mind that all information and data contained in this handbook is believed to be reliable, but all recommendations or suggestions are made without guarantee. Furthermore, suggestions for use of material supplied shall not be construed as a recommendation or inducement to violate any law or infringe on any patent.

We hope that the product and application information along with the sample component drawings help involved individuals to make informed decisions. The Gund Company welcomes any comments, suggestions, or applications questions. We sincerely appreciate the opportunity to assist you in meeting your electrical insulation requirements. Tel (314) 423-5200 Fax (314) 423-9009

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Our Locations

Cedar Lake, Indiana (Chicago) • 30,000 Sq. Foot Fabrication Facility Milwaukee, Wisconson • 50,000 Sq. Foot Fabrication Facility • 20,000 Sq. Foot Molding Facility

Fergus, Ontario (Toronto) • 55,000 Sq. Foot Fabrication Facility

Milwaukee, WI Cedar Lake, IN (Chicago)

St. Louis, MO

Mexico City, Mexico

Mexico City, Mexico • 11,000 Sq. Foot Fabrication Facility

St. Louis, Missouri • Corporate Headquarters • 62,500 Sq. Foot Fabrication Facility

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San Bernardino, CA

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San Bernardino, California • 20,000 Sq. Foot Fabrication Facility

Fergus, ON (Toronto)

Primary Customer Segments

By focusing on understanding our customer’s specific application requirements, TGC has delivered solutions to customers around the world. TGC exports to more than 32 countries including Japan, Korea, China, Austria, United Kingdom, and Saudi Arabia.

Power Supply

A natural extension of both the switchgear and transformer insulation business. From Dry Type Transformer Components to Chassis Liners and every insulator in between, TGC can provide kitting solutions.

Switchgear Insulation

Transformer Insulation

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Winding kits including coil spacer sticks, coil wedges, step blocks, terminal strips, phase barriers, cable clamps, and bus supports. Layer insulation options and PSA layer tapes.

TGC is an integrated manufacturer of glass polyester laminates (GPO-3) with complete fabrication capability for phase barriers, terminal supports, bus bar supports, and cable clamps.

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Transformer Insulation Components Overview The Gund Company manufactures insulating components for many types of electrical transformers including: • • • • •

Large Power Transformers Oil Filled Distribution Transformers Dry Type Distribution Transformers Dry Type Power Supply Transformers Electronic Transformers

Though transformers perform a similar role in the power distribution system regardless of design, the various transformer insulation design parameters can be quite different. For example, an oil filled transformer used for outdoor power distribution applications requires insulating components compatible with the dielectric fluid used in the transformer. On the other hand, a dry type transformer used for power distribution inside a building requires a higher temperature insulation system typically rated for 180°C to 220°C. While the design or function of an insulating component may be similar in both oil filled and dry type transformers, the material selection criteria can be completely different.

The Gund Company has put together the Dry Type Transformer Insulation Handbook to help serve as a reference tool for our customers involved in the manufacturing and repair of transformer equipment. We have attempted to gather information on the most common insulation component applications as well as the most common insulating material alternatives. If we have not included a particular material or application of interest to you, please contact us for a specific review of your requirements. The Gund Company has also produced an Oil Filled Transformer Insulation Handbook which may be requested by contacting The Gund Company.

Whatever your transformer insulation requirement may be, The Gund Company has the material knowledge and technical capability to assist you in developing potential engineering solutions.

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Over the years, The Gund Company has served as a partner for many of our customers interested in lowering the cost structure of their design. By partnering with our customers, we can review current insulation system designs in order to help identify areas for potential cost reductions. Many of our customers participate in our “Cost Reduction Initiative Program” wherein we request design information, assembly drawings, and related information so that we can make a proposal that may lower the cost of production.

Common Insulation Components by Type of Transformer Type of Transformer

Dry Type Transformer Electronic, Power Supply or Distribution Applications

Oil Filled Transformer Medium & Large Power Applications Additional informatin found in TGC’s Oil Filled Transformer Insulation Handbook

Oil Filled Transformer Distribution Applications Additional informatin found in TGC’s Oil Filled Transformer Insulation Handbook

Insulating Component

Common Materials

Conductor Insulation Layer Insulation Layer Insulation Tape Winding Comb Coil Wedges Air Duct (Axial) Spacer Sticks Phase Barrier Coil Clamps Bus Bar Supports Winding Bobbins Insulating Nuts & Bolts Insulating Angles & Channels Stand-off Insulators

Slit Nomex Aramid Paper Coils Nomex™ Aramid Paper, Quin-T Glass Cloth Tape, TESA 4617 Glass Polyester Laminate, SG-200, N220 Glass Polyester Laminate, GPO-3 Glass Polyester Dogbone Rod Glass Polyester Laminate, GPO-3 Glass Polyester Laminate, GPO-3 Glass Polyester Laminate, GPO-3 Glass Epoxy Laminate, G10 / G11 Glass Epoxy Laminate Glass Polyester Pultrusions Molded Glass Polyester

Conductor Insulation Layer Insulation Layer Insulation Tape Crossover Pad Insulation Core Insulation Core Spacers Core Fastener Insulation Axial and Radial Spacers Punched Spacers Clamping Plates & Rings Lead Termination Insulation Lead & Cable Clamps Coil Supports – Step Blocks Insulating Nuts & Bolts Tap Changer Insulating Boards Lead & Cable Tubing Tie Plate Bolt Insulation

Nomex™ & Creped Kraft Paper Diamond Epoxy Coated Kraft Glass Reinforced Polyester Tape Rag Paper Insulation – COPACO Glass Polyester Laminate, GPO-1 Glass Polyester Laminate, GPO-1 Glass Epoxy Laminate, G-10 Fabricated Pressboard Material Fabricated Pressboard Material Fabricated Pressboard Material, Laminated Wood Paper Phenolic Laminate, XXX Paper Phenolic Laminate, XXX Fabricated Pressboard Material, Laminated Wood Glass Epoxy Laminate, G-10 Low Power Factor Paper Phenolic Paper Phenolic Laminate, XXX Glass Epoxy & Steel Assembly

Layer Insulation Layer Insulation Tape Crossover Pad Insulation Phase Barriers Insulating Angles & Channels Fuse & Terminal Boards Insulating Tubing

Diamond Coated Kraft Paper Glass Reinforced Polyester Tape Rag Paper Insulation – COPACO Glass Polyester Laminate, GPO-1 Glass Polyester Pultrusion, GPO-3 Glass Polyester Laminate, GPO-1, NEMA XXX Paper Phenolic Tubing, XXX

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Section II Transformer Coil Insulation Components

Coil Insulation Overview Stand-off Insulators Insulated Yoke Bolt Adjustable Insulated Pressure Plate Core Cooling Duct Insulating Spacers Insulating Pressure Collar Low Voltage Winding High Voltage Winding Insulating Tubes Insulated Core Bolt Insulating Barrier Between Coils Insulating Pressure Collar Adjustable Insulating Pressure Plate

Transformer coils require a variety of insulation materials depending on the specific design characteristics of the transformer, such as dry type or oil filled, temperature rating, and application. In general, coil insulation would include the different insulations used between the core and the windings, between the windings themselves, and around the coil itself. The following pages will cover these insulation applications including:

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Core Insulation Winding Combs Air Duct (Axial) Spacers Pressure Plates

Layer Insulation Spacer Sticks Lead Insulation Pressure Rings

Conductor Insulation Pressure Collars Layer / Coil Tape

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Winding Bobbins Description Many dry type transformers for electronic and power supply applications utilize winding bobbins in their design. Of course, almost all high volume electronic transformer winding bobbins are molded from thermoset or thermoplastic resins. The Gund Company supplies custom fabricated winding bobbins using thermoset composites which offer excellent mechanical strength and outstanding dielectric properties at elevated temperatures. Custom winding bobbins can be made in quantities from a few to several thousand. Common shapes for custom winding bobbins include square, round, oblong, and rectangular. Most winding bobbins consist of an insulating tube bonded to a series of flanges made from sheet material. A bobbin may have multiple flanges to allow for the separation of phases according to the transformer design.

Materials Nomex™ Aramid Paper & Pressboard Material Glass Epoxy Laminate, NEMA Grade G-10/FR4 Glass Epoxy Laminate, NEMA Grade G-11 Glass Polyester Laminate, NEMA GPO-3 Glass Polyester Laminate, Grade N220

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• • • • •

Insulating Core Tubes Description Most transformer coils are wound around a mandrel. The mandrel often has an initial wrap of insulation material which can be as simple as Nomex™ Aramid Paper taped around the mandrel or which can be a filament wound tube. Historically, filament wound tubes were used as a common practice for core tubes, but many companies evolved to using Nomex™ Aramid Paper for various reasons. As the cost of Nomex™ has increased over time, filament wound tubes are proving themselves to be very cost effective for insulating core tubes. A filament wound core tube provides excellent mechanical strength with even a 0.030” wall relative to Nomex™ Aramid Paper with a 0.060” wall. Filament wound tubes do slide right on the mandrel and can lower labor costs relative to the awkward process of taping 0.030” layers on Nomex™ around a mandrel. Also, filament wound tubes are extremely abrasion resistant and can withstand the driving of the core shims to tighten the core / coil assembly. Of course, filament wound core tubes do need to be ordered with an advance lead-time of one to two weeks and must be ordered to size whereas a Nomex™ core tube can be made and taped right on the existing mandrel.

Materials • Nomex™ Aramid Paper • Quin-T Family of Papers • Filament Wound Glass Epoxy or Glass Polyester Tubing

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Conductor Insulation

Description Most dry type transformers use a paper based insulation wrap over the conductor as a secondary insulation in addition to the conductor’s primary varnish insulation. Sometimes, the Aramid paper insulation is wrapped around the bare conductor (with no varnish) as the primary insulation. The insulating paper material offers additional insulation protection between the turns of the transformer coil while protecting the conductor from abrasion, scratches, and cuts during the manufacturing process. The Gund Company custom slits insulating papers into coils for conductor insulation applications. Typical conductor insulation ranges in thickness from .001” to .003” and ranges in width from .375” to .750”. The Gund Company supplies coils on 3” ID or 10” ID coils with a maximum O.D. of 18”. For conductor leads that exit the winding, The Gund Company supplies insulating sleeving and pressure sensitive tapes depending on the manufacturer’s design and insulation system requirements.

Materials

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Nomex™ Aramid Paper Quin-T Family of Insulating Materials Kapton Polyamide Film Tape Varflex Insulating Sleeving (for leads) Intertape Polymer Tape (for leads)

Conductor of a barrel wound transformer wrapped with Nomex™ Aramid Fibre Tape

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• • • • •

Layer Insulation Description Layer Insulation refers to the relatively thin (.005” - .020” typical) layers of flexible insulation material used between the turns of conductor, most typically in bobbin wound coils. Layer insulation typically requires the use of pressure sensitive tape in order to help hold the layer insulation in place. These pressure sensitive tapes perform a largely mechanical role, but must be compatible with the transformer’s insulation system.

Top-Down view of a barrel wound transformer pointing out the Nomex™ Aramid Paper layer insulation

For dry type transformers, the most commonly used layer insulation material is Nomex™ Aramid Paper. While Quin-T family of insulating papers has found application for dry type transformer layer insulation, many companies have not approved Quin-T lower cost alternatives. Some dry type transformer designs also utilize a B-Stage glass cloth product. For additional information on various B-Stage glass cloth construction alternatives, please contact The Gund Company. Insulating tape, used in conjunction with dry type transformer layer insulation typically, is a glass cloth based tape with a rubber or silicone adhesive to reach the 220°C temperature rating. Tel (314) 423-5200

Materials • • • •

Nomex™ Aramid Paper Quin-T Family of Insulating Products B-Stage Epoxy Impregnated Glass Cloth Glass Cloth Based Rubber Adhesive PSA Tape

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Layer Insulation Tape Description Most dry type transformers use a pressure sensitive tape for holding down the layers of insulation as the coil is being wound. In electronic transformers, pressure sensitive tape is typically the layer insulation itself. Though not a complete representation of all electrical pressure sensitive tape in the marketplace, the following tapes are commonly used for layer insulation tape applications.

Dry Type Transformer Layer Insulation Tapes: Designation Intertape 4618 Intertape 4617 Intertape 4428 Intertape 4429

Thickness .007” .007” .0022” .0035”

Backing Material Reinforcement Glass Cloth Glass Cloth Glass Cloth Glass Cloth Polyimide Film n/a Polyimide Film n/a

Adhesive Silicone Silicone Silicone Silicone

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Please contact The Gund Company for a complete listing of pressure sensitive adhesive tapes for electronic transformer applications. Data sheets are available upon request for any tape product.

Intra-Coil Phase Barriers Description Depending on the design, intra-coil phase barriers may be used between the primary and secondary winding. For applications between the primary and secondary winding, a flexible layer of hightemperature glass polyester laminate such as Grade FHT or Grade N200F would be used in thicknesses ranging from 0.030” to 0.093”. Nomex™ Aramid Paper is also sometimes used by layering up 0.030” material.

Materials • Nomex™ Aramid Paper • High-Temperature, Flexible Glass Polyester Laminate, Grade N200F • High-Temperature, Flexible Glass Polyester Laminate, Grade FHT

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(1)

(2)

Top-down view of a transformer with the primary windings (1) insulated with N200F or FHT and the secondary windings (2) insulated with Nomex™

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Inter-Coil Phase Barriers Description Depending on the design, inter-coil phase barriers may be used between the coils (phases) of the transformer. For applications between the coils of the transformer, Grade FHT or Grade N200F can be wound into the outer layers of the coil on the side closest to the adjacent coil. Some applications for higher voltage transformers place the phase barriers outside the coil winding between each coil. These phase barriers are typically made from 0.125” or 0.187” NEMA GPO-3.

Materials Nomex™ Aramid Paper High-Temperature, Flexible Glass Polyester Laminate, Grade N200F High-Temperature, Flexible Glass Polyester Laminate, Grade FHT Glass Polyester Laminate, NEMA Grade GPO-3

Phase barriers made of GPO-3 between the coils of a disk wound transformer

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• • • •

Winding Combs

Description Winding Combs are used in disc wound dry type transformers. The winding comb mechanically supports the turns of the coil while insulating each turn from the others. Although traditional designs use 220°C rated material, some manufacturers have successfully implemented 180°C rated materials in some designs. NEMA GPO-3, a 130°C rated material, is commonly used for winding combs as well. The Gund Company custom fabricates dry type winding combs with an automated CNC machining center. Each transformer’s combs are made independently allowing for an infinite range of designs. This allows for a custom transformer winding configuration to meet the customer’s requirements. A normal transformer may require 24 to 36 combs depending on the design. Customers simply send a drawing, select a material, and receive a quotation. A template Winding Comb Order Form can be found in the appendix to facilitate a request for quotation. Typical lead-time for custom comb orders is two to four days. Standard features for The Gund Company’s winding combs include: • Beveled, sharp edges to protect conductor • Custom fabrication in small lot sizes • Fastest lead-times in industry Please refer to the Appendix for a template Winding Comb Order Form for reference.

Materials

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• • • • • • • •

Glass Polyester Laminate, NEMA Grade GPO-3 (130°C) Glass Polyester Laminate, NEMA Grade N155 (155°C) Glass Polyester Laminate, NEMA Grade G-11 (155°C) Glass Polyester Laminate, Grade TWC-200 (180°C) Glass Polyester Laminate, Grade SG-200 (210°C) Glass Polyester Laminate, NEMA Grade N220 (220°C) Glass Epoxy Laminate, NEMA Grade G-10/FR4 (130°C) Glass Epoxy Laminate, Grade Isoval R (180°C)

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Coil Shims

Description Coil shims are most commonly used in barrel wound dry type transformers. The primary purpose of coil shims is to tighten the coil windings in order to prevent potential vibration in the unit. For dry type transformers, most company’s use a glass based laminate such as GPO-3 for excellent mechanical strength. The Gund Company’s unique fabrication process for producing beveled or straight-edged coil shims allows us to offer the lowest cost shims in the industry. Custom shims can be shipped within two to four days.

Materials

Transformer coil wedges made with GPO-3 (Top) and GPO-1 (Bottom)

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• Glass Polyester Laminate, NEMA Grade GPO-1 • Glass Polyester Laminate, NEMA Grade GPO-3 • Glass Polyester Laminate, Grade N220, Grade SG-200, or Grade HST-II

Air Duct (Axial) Spacer Sticks Description Air duct spacer sticks are used to provide clearances for the flow of air for the cooling of transformer coils. Their function is largely mechanical. In large and medium power transformers, spacer sticks are custom made to a particular profile and may be used in conjunction with punched spacers to help position the conductor wire around the coil. In dry type transformers, spacer sticks are typically 220°C glass polyester pultruded rods often called “dogbones,” appropriately named because of a commonly used version in that particular shape. Dogbones

Rounds

Rectangles



Squares







 



Materials • Pultruded Glass Polyester Rod Grade N155 or N220 • Pultruded Glass Polyester Rod Grade MTS, HIR, or SG-200 • Pultruded Glass Polyester Rod Grade SuperSil™-

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“Dogbone” air duct spacer sticks between layers of Nomex™ on a barrel wound transformer

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Section III Coil Support & Superstructure Components

Coil Supports Description Coil supports can be used throughout the transformer design to help add mechanical strength and stability to a coil unit. In most cases, coil supports are used to reduce potential vibration while securing the coil firmly to the steel structural support of the transformer. Coil supports can be made to support the coil from the structural steel components from above and below the coil depending on design. In dry type transformers, coil supports are typically made out of Glass Polyester Laminate (NEMA GPO-1, NEMA High Temperature GPO-1 Grades, or NEMA GPO-3). For applications requiring greater mechanical strength, Glass Epoxy Laminate, NEMA Grade G-10/FR4 or NEMA Grade G-11 may be a better alternative.

Materials • Glass Polyester Laminate, NEMA Grades GPO-1, GPO-3 • Glass Polyester Laminate, Grades N220, SG-200, HST-II (NEMA GPO-1 High Temp Grades) • Glass Epoxy Laminate, NEMA Grade G-10/FR4 or G-11

Tel (314) 423-5200

Coil supports on a dry type transformer made from GPO-3

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Dry Type Transformer Insulation Handbook

Insulating Nuts & Bolts

Description Insulating Fasteners including bolts, washers, and nuts are available from The Gund Company in a variety of materials, sizes, and configurations. Insulating fasteners offer high mechanical strength and excellent dimensional stability at elevated temperatures. In many applications, insulating fasteners solve design issues by simplifying efforts to isolate or ground conducting components of an assembly. For instance, in some applications, insulating nuts and bolts can replace a fastener assembly consisting of the metallic nut and bolt as well as the required insulating bushing and insulating washer. Common applications include: transformer tap changers, transformer coil supports, lead clamps, bus bar clamps, barrier supports, and many more designs requiring a non-conductive fastener with excellent mechanical strength and stability at elevated temperatures.

Material Options

Glass Polyester

Low pressure molded glass polyester composite with a pultruded core and molded threads. Better mechanical strength and temperature resistance than pressed wood. (Common trade names include Perma-Bolt and Permaglass) High Pressure glass epoxy laminate with machined threads. (Common trade names include Durostone)

Temperature Rating

Applications

130°C

Switchgear applications, dry type transformer applications, motor lead clamp applications

180°C

Power generator lead clamp applications, electrical furnace applications critical high strength / temperature applications

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Glass Epoxy

Description

Insulating Nuts & Bolts Availability

Insulating fasteners are available in English or Metric unit sizes. Insulating bolts are available with a full threaded bolt and a bolt with flat sides. The flat side bolts allow for easier threading, but provide less thread strength. Standard nuts are square, but hexagonal nuts can be manufactured at an additional cost upon request. Configuration

Description Threaded rods are available with a full thread around the complete diameter of the rod. This option offers the best thread strength

Full Thread Bolt

Flat Sides Bolt

Threaded rods are also available with flat sides to allow for easier threading of the nuts. This option can be produced more cost effectively, but provide less thread strength.

T Threaded nuts are available in standard square design with a multitude of standard English and Metric sizes of threaded holes.

W

D Square Nuts

T Threaded hexagonal nuts are available upon request. Due to the additional cost required to make these nuts, most customers opt for the standard square nuts. Of course, hexagonal nuts are available with the same range of standard English and Metric threaded hole sizes

D Tel (314) 423-5200

W

Fax (314) 423-9009

Hexagonal Nuts

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Dry Type Transformer Insulation Handbook

Insulating Nuts & Bolts Availability Insulating fasteners are available in English or Metric unit sizes. Insulating bolts are available with a full threaded bolt and a bolt with flat sides. The flat size bolts allow for easier threading, but provide less thread strength. Standard nuts are square, but hexagonal nuts can be manufactured at an additional cost upon request.

Full Thread Bolt

Flat Sides Bolt

English Size Threaded Rods Standard Thread Size

Pressed Wood

Glass Polyester

Glass Epoxy

¼” – 20

Full

Full

Full or Flat

3/8” – 16

Full

Full

Full or Flat

½” - 13

Full

Full

Full or Flat

5/8” - 11

Full

Full

Full or Flat

¾” - 10

Full

Full

Full or Flat

7/8” - 9

Full

Full

Full or Flat

1” - 8

Full

Full

Full or Flat

1-1/4” – 11-1/2

Full

Full

Full or Flat

1-1/2” – 11-1/2

Full

Full

Full or Flat

Pressed Wood

Glass Polyester

Glass Epoxy

M6

Full

Full or Flat

Full or Flat

M8

Full

Full or Flat

Full or Flat

M10

Full

Full or Flat

Full or Flat

M12

Full

Full or Flat

Full or Flat

M14

Full

Full or Flat

Full or Flat

M16

Full

Full or Flat

Full or Flat

M18

Full

Full or Flat

Full or Flat

M20

Full

Full or Flat

Full or Flat

M24

Full

Full or Flat

Full or Flat

M27

Full

Full or Flat

Full or Flat

M30

Full

Full or Flat

Full or Flat

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Standard Thread Size

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Metric Size Threaded Rods

Insulating Nuts & Bolts Availability Insulating fasteners are available in English or Metric unit sizes. Insulating bolts are available with a full threaded bolt and a bolt with flat sides. The flat side bolts allow for easier threading, but provide less thread strength. Standard nuts are square, but hexagonal nuts can be manufactured at an additional cost upon request.

T

W

D

English Size Threaded Nuts Standard Thread Size

Standard Thickness Range

Standard Width

Typical Description

¼” – 20

¼” – ½”

½”

¼” thk x ¼”-20 ID x ½” Square

3/8” – 16

3/8” – ¾”

5/8”

3/8” thk x 3/8”-16 ID x 5/8” Square

½” - 13

½” – 1”

7/8”

½” thk x ½” – 13 ID x 7/8” Square

5/8” - 11

5/8” – 1-1/4”

1”

5/8” thk x 5/8”-11 ID x 1” Square

¾” - 10

¾” – 1-1/2”

1-1/4”

¾” thk x ¾” – 10 ID x 1-1/4” Square

7/8” - 9

7/8” – 1-3/4”

1-1/2”

7/8” thk x 7/8” – 9 x 1-1/2” Square

1” - 8

1” – 2”

1-5/8”

1” thk x 1” – 8 ID x 1-5/8” Square

1-1/4” – 11-1/2

1-1/4” – 2-1/2”

2”

1-1/4” thk x 1-1/4” – 11-1/2 x 2” Square

1-1/2” – 11-1/2

1-1/2” – 3”

2.5”

1-1/2” thk x 1-1/2” – 11-1/2 x 2.5” Square

Metric Size Threaded Nuts Standard Thread Size

Standard Thickness Range

Standard Width

Typical Description

M6

6mm - 12mm

10mm

6mm thk x M7 ID x 10mm Square

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M8

8mm - 16mm

13mm

8mm thk x M8 ID x 13mm Square

M10

10mm - 20mm

17mm

10mm thk x M10 ID x 17mm Square

M12

12mm - 24mm

19mm

12mm thk x M12 x 19mm Square

M14

14mm - 28mm

22mm

14mm thk x M14 x 22mm Square

M16

16mm - 32mm

24mm

16mm thk x M16 x 24mm Square

M18

18mm - 36mm

27mm

18mm thk x M18 x 27mm Square

M20

20mm - 40mm

30mm

20mm thk x M20 x 30mm Square

M24

24mm - 48mm

36mm

24mm thk x M24 x 36mm Square

M27

27mm - 54mm

41mm

27mm thk x M27 x 41mm Square

M30

30mm - 60mm

46mm

30mm thk x M30 x 46mm Square

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Dry Type Transformer Insulation Handbook

Insulating Nuts & Bolts Description The following chart indicates the typical properties for each of the insulating nut and bolt materials. All values indicated are typical minimum test values, but represent no guarantee. It is our recommendation to test all material in application prior to implementation.

Parameters

Glass Polyester

Glass Epoxy

Specific Gravity Temperature Index Water Absorption Tensile Strength Flexural Strength Compressive Strength Dielectric Strength Arc Resistance

Pounds/Cubic Inch °C % in 24 Hours psi psi psi Volts per Mil. (VPM) Seconds

0.065 130 0.20 15,000 25,000 30,000 45 120

0.068 155 0.20 41,000 50,000 40,000 50 125

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Property

Phase Barriers Description

Phase barriers are used between the coils of a transformer to help prevent any phase to phase faults. The use of phase barriers helps to increase the creepage distance from phase to phase allowing for closer placement of coils inside the transformer unit. Dry type transformers use phase barriers manufactured from Glass Polyester Laminate, NEMA Grade GPO-3. Typically, phase barriers are produced in thicknesses of 1/8”, 3/16”, and 1/4”. Phase barriers are custom fabricated as required according to the transformer design. Dry type transformers with attached switchgear also use phase barriers on the switching side of the unit. Phase barriers for switch side applications are most commonly manufactured from Glass Polyester Laminate, NEMA Grade GPO-3.

Materials • Glass Polyester Laminate, NEMA Grade GPO-1 • Glass Polyester Laminate, NEMA Grade GPO-3

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View of a disc wound transformer, displaying the phase barriers made of a Glass Polyester Laminate, NEMA Grade GPO-3 material

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Insulating Angles & Channels Description Insulating angles and channels are used in a wide variety of applications including: • Mechanically supporting bus bar • Insulating between steel structural members and current conducting components • Providing mechanical support for lead connections • Providing non-conductive structural support Insulating angles and channels are available in a wide range of standard sizes. Typical wall thickness for angles and channels varies from 1/8” up to 1/2”. Along with a line of standard angles and channels, The Gund Company can customize angles and channels to adjust leg heights on channels and leg lengths on angles. Channels and angles can be custom fabricated to include drilled holes, slots, and cutouts according to the exact drawing requirements for a particular application.

Materials

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• Pultruded Glass Polyester, NEMA GPO-3

Stand-off Insulators Description Stand-off insulators are used to increase the creepage distance between two potentially conductive components inside the transformer. Some stand-off insulator designs incorporate flanges to increase the arc distance. Stand-offs may perform the following functions: • Mechanically supporting bus bar • Insulating between steel structural members and current conducting components • Providing non-conductive structural support The Gund Company supplies a wide range of stand-off insulators including the examples shown below. See the complete material data sheet information in the data sheet section of this handbook

Materials • Compression Molded Glass Polyester, NEMA Grade GP0-3

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Section IV Transformer Tap Changer Components

Tap Changer Components Description The Gund Company can make a complete range of non-metallic, insulating components for various tap changer designs including:

Terminal Boards

Used for mounting contacts allowing for an insulating medium to prevent current from passing between contacts. Typical materials include: Glass Polyester Laminate, NEMA Grade GPO-1 Glass Polyester Laminate, NEMA Grade GPO-3 Glass Polyester Laminate, Grade SG-200 Glass Polyester Laminate, Grade HST-II Glass Polyester Laminate, Grade N220 Low-Power Factor Paper Phenolic, NEMA Grade LPF206.15

Insulated Shafts for Drive Mechanism

Used for mounting contacts allowing for an insulating medium to prevent current from passing between contacts. Typical materials include: Glass Polyester Laminate, NEMA Grade GPO-1 Glass Polyester Laminate, NEMA Grade GPO-3 Glass Polyester Laminate, Grade SG-200 Glass Polyester Laminate, Grade HST-II Glass Polyester Laminate, Grade N220

Non-metallic Gears

To prevent current from passing along the drive mechanism, non-metallic gears can be used. Typical materials include: Canvas Phenolic Laminate, NEMA Grade C Glass Epoxy Laminate, NEMA Grade G-10

Insulating Tubing

Insulating tubing and bushings are used to insulate metallic, conductive fasteners such as connecting rods and bolts. Insulating tubing can also be used to protect routing paths for leads and cables.

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Typical materials include: Glass Epoxy Laminate, NEMA G-10/FR 4 Glass Epoxy Laminate, NEMA G-11

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Section V Material Data Sheets

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA

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INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade G-10/FR4 Glass Epoxy Laminate

Description:

NEMA Grade G-10/FR4 material is a continuous filament woven fiberglass sheet bonded with epoxy resin. The material has the ability to maintain excellent mechanical, electrical, and physical properties at elevated temperatures to 130°C

Standards:

NEMA LI-1 IEC 60893 MIL-I-24768

Availability:

Laminate Sheets:

Grade FR4 EP GC 202 27 GEE - F

Thickness: Sheet Sizes:

English Units .006” to 5.0” 36” x 48”, 39” x 48” 36” x 72”, 48” x 48” 48” x 96”, 48” x 108”

SI Units 0.15 mm to 127 mm 91.4 cm x 122 cm, 99 cm x 122 cm 91.4 cm x 182.2 cm, 122 cm x 122 cm 122 cm x 243.8 cm, 122 cm x 274.3 cm

Convolute Tubing: Available in an infinite number of inner diameter/outer diameter combinations as per customer requirements. Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Key Characteristics

Test Method

Units - English (SI)

Typical Values

Specific Gravity

--

lb./in. (g/cc)

0.067 (1.85)

Rockwell Hardness (.50”)

--

M Scale

98

Moisture Absorption (.062”)

ASTM D-570

%

0.10

Tensile Strength (.125”) LW CW

ASTM D-638

psi (MPa)

40,000 (275) 32,000 (220)

Compressive Strength, Flatwise (.50”)

ASTM D-695

psi (MPa)

66,000 (455)

Flexural Strength (.062”) LW CW

ASTM D-790

psi (MPa)

65,000 (448) 52,000 (358)

Flexural Modulus (.062”) LW CW

ASTM D-790

ksi (MPa)

2,900 (19,995) 2,600 (17,926)

Shear Strength, Perpendicular (.062”)

ASTM D-732

psi (MPa)

21,500 (148)

IZOD Impact Strength LW CW

ASTM D-256

ft.-lbs./in. Notched

7.9 7.3

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Bonding Strength (.50”)

ASTM D-229

lb. (kg)

2,300 (1,043)

Breakdown Voltage (.062”) Condition A D-48/50

ASTM D-149

kV

66 65

Dielectric Strength (.062”) Condition A D-48/50

ASTM D-149

V/mil

800 750

Comparative Tracking Index (.125”)

ASTM D-3638

--

300

Arc Resistance (.125”)

ASTM D-495

Seconds

130

Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade G-11, Glass Epoxy Laminate Grade MC511AF

Description:

NEMA Grade G-11 MC511AF is a high pressure laminate manufactured from a glass cloth substrate impregnated with a high temperature epoxy resin system. This grade meets or exceeds all specifications for NEMA G-11 material.

Standards:

NEMA LI-1 IEC 60893 MIL-I-24768

Availability:

Laminate Sheets:

Thickness: Sheet Sizes:

Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Grade G-11 EP GC 203 3 GEB

Units - English (SI)

Typical Values

Standard Color

--

--

Yellow-Brown

Specific Gravity

--

lb./in. (g/cc)

0.069 (1.91)

Rockwell Hardness (.125”)

--

M Scale

110

Moisture Absorption (.125”)

ASTM D-570

%

0.085

Tensile Strength, Lengthwise (.125”)

ASTM D-638

psi (MPa)

41,000 (282.5)

Compressive Strength (.125”)

ASTM D-695

psi (MPa)

50,000 (344.5)

Flexural Strength, Lengthwise (.125”)

ASTM D-790

psi (MPa)

57,000 (392.7)

Shear Strength, Perpendicular (.062”)

ASTM D-732

psi (MPa)

21,000 (144.7)

ASTM D-256

ft.-lbs./in. Notched

10.0

IZOD Impact Strength Lengthwise (.125”) Arc Resistance (.125”)

ASTM D-495

Seconds

185

Bonding Strength (.50”)

ASTM D-229

lb. (kg)

2,200 (1,000)

Temperature Index, Electrical Mechanical

--

°C

170 180

Permittivity (.125”)

ASTM D-24/23

--

4.5

Flammability Rating

UL94

Class

HB

Breakdown Voltage (.125”)

ASTM D-149

kV

65

Dielectric Strength, Perp. - Short Time (.125”)

--

V/mil

550

Volume Resistivity (.125”)

--

Mega Ohms/cm

5.0 x 1010

Surface Resistivity (.125”)

--

Mega Ohms

1.5 x 1010

Tg

--

°C

180

Fax (314) 423-9009

Test Method

SI Units 2.54 mm - 15.24 cm 122 cm x 244 cm, 122 cm x 300 cm

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Key Characteristics

English Units 0.010” - 6.0” 48” x 96”, 48” x 118”

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade GPO-1, Grade APO-1, Glass Polyester Laminate Sheet (130°C)

Description:

NEMA Grade GPO-1 grades of low-pressure glass polyester laminate are made from fiberglass mat reinforced polyester composite. NEMA Grade GPO-1 is a Class B (130°C) material. NEMA LI-1 IEC 60893

Standards:

Availability:

Laminate Sheets: Thickness: Sheet Sizes: Fabricated Parts:

GPO-1 UPGM 201 English Units 0.031” to 2.0” 36” x 72”, 48” x 96”

SI Units 0.8 mm to 50.8 mm 92 cm x 183 cm, 122 cm x 244 cm

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Key Characteristics

Test Method

Units - English (SI)

Standard Color

--

--

Density

--

lbs./in (g/cc)

--

Water Absorption (.125”)

ASTM D-570

%

0.7

0.25

Tensile Strength

ASTM D-638

psi (MPa)

8,000 (55)

9,500 (66)

Compressive Strength, Flatwise

ASTM D-695

psi (MPa)

30,000 (206)

35,000 (241)

Flexural Strength, Lengthwise

ASTM D-790

psi (MPa)

18,000 (124)

20,000 (138)

Bond Strength (.50”)

ASTM D-229

lbs. (kg)

850 (385)

1,200 (544)

Shear Strength

ASTM D-732

psi (MPa)

--

16,000 (110)

UL File Number

--

--

--

E323105

Izod Impact Strength, Edgewise

ASTM D-256

ft.-lbs./in.

8.0

8.5

Arc Resistance

ASTM D-495

Seconds

100

130

V/mil (kV/mm)

300 (11.8)

450 (17.6)

Dielectric Strength, Perp., In Oil (.0625”) ASTM D-149

NEMA Standard Typical Values Brown 0.066 (1.83)

Breakdown Voltage, Parallel Pin, In Oil

ASTM D-149

kV

40

> 40

Thermal Class

--

--

--

Class B - 130°C

Flammability

UL 94

Class

HB

HB

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All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade GPO-2, NOHL Grade APO-2, Glass Polyester Laminate Sheet

Description:

NOHL Grade APO-2 is a flame resistant NEMA Grade GPO-2 glass polyester laminate. This UL recognized product (QMTS2.E75481) provides V-0 flame resistance.

Availability:

Laminate Sheets: Thickness: Sheet Sizes:

SI Units 0.8 mm to 50.8 mm 92 cm x 183 cm, 122 cm x 244 cm

Key Characteristics

Test Method

Units - English (SI)

NEMA Standard Typical Values

Standard Color

--

--

--

Red

Density

--

lbs./in (g/cc)

--

0.065 (1.81)

Water Absorption (.125”)

ASTM D-570

%

0.60

0.55

Tensile Strength

ASTM D-638

psi (MPa)

8,000 (55)

9,000 (62)

Compressive Strength, Flatwise

ASTM D-695

psi (MPa)

30,000 (206)

37,000 (255)

Flexural Strength, Lengthwise

ASTM D-790

psi (MPa)

18,000 (124)

22,000 (152)

Bond Strength (.50”)

ASTM D-229

lbs. (kg)

850 (385)

1,080 (490)

Shear Strength

ASTM D-732

psi (MPa)

--

12,500 (86)

Izod Impact Strength, Edgewise

ASTM D-256

ft.-lbs./in.

8.0

9.0

Arc Resistance

ASTM D-495

Seconds

150

192

Dielectric Strength, Perp., In Oil (.0625”) ASTM D-149

V/mil (kV/mm)

300 (11.8)

540 (21.3)

Breakdown Voltage, Parallel Pin, In Oil

ASTM D-149

kV

40

50

Flammability

UL 94

Class

V-0

V-0

Fax (314) 423-9009

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Fabricated Parts:

English Units 0.031” to 2.0” 36” x 72”, 48” x 96”

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade GPO-3, NOHL Grade APO-3, Glass Polyester Laminate Sheet

Description:

NOHL Grade APO-3 is a track and flame resistant NEMA Grade GPO-3. This UL recognized product (QMTS2.E75481) provides V-0 flame resistance in thinner thicknesses.

Availability:

Laminate Sheets: Thickness: Sheet Sizes: Fabricated Parts:

English Units 0.031” to 0.094” 36” x 72”

SI Units 0.78 mm to 2.4 mm 92 cm x 183 cm

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Key Characteristics

Test Method

Units - English (SI)

Standard Color

--

--

NEMA Standard Typical Values

Density

--

lbs./in (g/cc)

--

0.065 (1.8)

Water Absorption (.125”)

ASTM D-570

%

0.50

0.55

Tensile Strength

ASTM D-638

psi (MPa)

8,000 (55)

9,000 (62)

Compressive Strength, Flatwise

ASTM D-695

psi (MPa)

30,000 (206)

37,000 (255)

Flexural Strength, Lengthwise

ASTM D-790

psi (MPa)

18,000 (124)

22,000 (152)

Bond Strength (.50”)

ASTM D-229

lbs. (kg)

850 (385)

1,080 (490)

Shear Strength

ASTM D-732

psi (MPa)

--

12,500 (86)

Incline Plane Track Resistance

ASTM D-2303

Minutes

300

> 400

Izod Impact Strength, Edgewise

ASTM D-256

ft.-lbs./in.

8.0

9.0

Arc Resistance

ASTM D-495

Seconds

150

192

Dielectric Strength, Perp., In Oil (.0625”) ASTM D-149

V/mil (kV/mm)

300 (11.8)

540 (21.3)

Breakdown Voltage, Parallel Pin, In Oil

ASTM D-149

kV

40

50

Thermal Class

--

--

--

Class B - 130°C

Flammability

UL 94

Class

V-0

V-0

Red

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All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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MANUFACTURERS OF

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INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade GPO-3, NOHL Grade GPO-3, Glass Polyester Laminate Sheet

Description:

NOHL Grade GPO-3 is a track and flame resistant NEMA Grade GPO-3. This UL recognized product (QMFZ2.E101063) offers excellent thermal endurance at an affordable price. NEMA LI-1 IEC 60893

Laminate Sheets: Thickness: Sheet Sizes: Fabricated Parts:

English Units 0.118” to 2.0” 36” x 72”, 48” x 96”

SI Units 3 mm to 50.8 mm 92 cm x 183 cm, 122 cm x 244 cm

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Key Characteristics

Test Method

Units - English (SI)

NEMA Standard Typical Values

Standard Color

--

--

Density

--

lbs./in (g/cc)

--

0.065 (1.8)

Water Absorption (.125”)

ASTM D-570

%

0.50

0.25

Tensile Strength

ASTM D-638

psi (MPa)

8,000 (55)

9,000 (62)

Compressive Strength, Flatwise

ASTM D-695

psi (MPa)

30,000 (206)

37,000 (255)

Flexural Strength, Lengthwise

ASTM D-790

psi (MPa)

18,000 (124)

22,000 (152)

Bond Strength (.50”)

ASTM D-229

lbs. (kg)

850 (385)

1,080 (490)

Shear Strength

ASTM D-732

psi (MPa)

--

13,000 (90)

Incline Plane Track Resistance

ASTM D-2303

Minutes

300

1000

Izod Impact Strength, Edgewise

ASTM D-256

ft.-lbs./in.

8.0

9.0

Arc Resistance

ASTM D-495

Red

Seconds

150

192

Dielectric Strength, Perp., In Oil (.0625”) ASTM D-149

V/mil (kV/mm)

300 (11.8)

550 (21.7)

Breakdown Voltage, Parallel Pin, In Oil

ASTM D-149

kV

40

50

Thermal Class

--

--

--

Class B - 130°C

Flammability

UL 94

Class

V-0

V-0

Fax (314) 423-9009

Availability:

IEC 60893 GPO-3 UPGM 203

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Standards:

The Gund Company, Inc

MANUFACTURERS OF

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INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade GPO-1, Grade N180 Glass Polyester Laminate

Description:

Grade N180 is a Class H (180°C) glass mat reinforced polyester material designed for applications where high comporessive and flexural strength are combined with high temperature resistance. Grade N180 has been designed for applications including electric motor slot topsticks, D.C. motor pole collars, hydro generator pole collars, rotating equipment slot filler, rotor pole blocking, lead and cable clamps, and related applications. NEMA LI-1 IEC 60893

Standards:

Availability:

GPO-1 UPGM 201 English Units 0.031” to 2.0” 37” x 73”

Laminate Sheets: Thickness: Sheet Sizes: Fabricated Parts:

SI Units 0.8 mm to 50.8 mm 94 cm x 185 cm

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Key Characteristics

Test Method

Units - English (SI)

Typical Values

Standard Color

--

--

Black

Density

--

lbs./in (g/cc)

0.069 (1.91)

Water Absorption (.125”)

ASTM D-570

%

0.25

Tensile Strength

ASTM D-638

psi (MPa)

16,000 (110)

Compressive Strength, Flatwise

ASTM D-695

psi (MPa)

50,000 (345)

Flexural Strength, Lengthwise Crosswise

ASTM D-790

psi (MPa)

29,000 (200) 32,000 (221)

Bond Strength (.50”)

ASTM D-229

lbs. (kg)

Shear Strength

ASTM D-732

psi (MPa)

18,000 (124) 12

Izod Impact Strength, Edgewise

ASTM D-256

ft.-lbs./in.

Arc Resistance

ASTM D-495

Seconds

180

V/mil (kV/mm)

450 (17.7)

Dielectric Strength, Perp., In Oil (.0625”) ASTM D-149 Breakdown Voltage, Parallel Pin, In Oil

ASTM D-149

kV

30

Thermal Class

--

--

Class H - 180°C

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All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Dry Type Transformer Insulation Handbook

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MATERIAL DATA SHEET Item:

DuraNohl™ N220

Description:

DuraNohl™ N220 is a specialty grade random glass mat, polyester resin, insulating material for high temperature NEMA GPO-1 applications. This material has a relative temperature index of 220°C electrical and 210°C mechanical. It has excellent retention of physical and electrical properties at elevated temperatures. NEMA LI-1 IEC 60893

English Units 0.031” to 2.0” 36” x 72”, 48” x 96”

Laminate Sheets: Thickness: Sheet Sizes: Fabricated Parts:

SI Units 0.78 mm to 50.8 mm 92 cm x 183 cm, 122 cm x 244 cm

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Key Characteristics

Test Method

Units - English (SI)

Typical Values

Standard Color

--

--

Natural Beige

Density

--

lbs./in (g/cc)

0.061 (1.7)

Water Absorption (.125”)

ASTM D-570

%

0.25

Tensile Strength

ASTM D-638

psi (MPa)

12,000 (83)

Compressive Strength, Flatwise

ASTM D-695

psi (MPa)

37,000 (255)

Flexural Strength, Lengthwise

ASTM D-790

psi (MPa)

24,000 (166)

Bond Strength (.50”)

ASTM D-229

lbs. (kg)

1,080 (490)

Shear Strength

ASTM D-732

psi (MPa)

13,000 (90)

Izod Impact Strength, Edgewise

ASTM D-256

ft.-lbs./in.

11.0

Arc Resistance

ASTM D-495

Seconds

180

Dielectric Strength, Perp., In Oil (.0625”) ASTM D-149

V/mil (kV/mm)

550 (21.7)

Breakdown Voltage, Parallel Pin, In Oil

ASTM D-149

kV

50

Relative Temperature Index

UL 746E

°C

220 Electrical 210 Mechanical

UL File Number

--

--

E323105

Fax (314) 423-9009

Availability:

GPO-1 UPGM 201

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Standards:

The Gund Company, Inc

MANUFACTURERS OF

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St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

SG-200 High Temperature Glass Polyester

Description:

SG-200 is a specialty grade random glass mat, polyester resin insulation material for high temperature applications. The material is rated at 210°C for electrical and mechanical applications. It has excellent retention of physical and electrical properties at elevated temperatures.

Availability:

Molded Sheets:

Thickness: Sheet Sizes:

Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

English Units 0.032” to 2.0” 36” x 72”, 48” x 96”

SI Units 0.8 mm to 50.8 mm 94 cm x 185 cm, 122 cm x 244 cm

Key Characteristics

Test Method

Units - English (SI)

Typical Values

Standard Color

--

--

Tan

Specific Gravity

ASTM D-792

lbs./in (g/cc)

0.061 (1.70)

Water Absorption (.125”)

ASTM D-570

%

0.3

Tensile Strength

ASTM D-638

psi (MPa)

12,500 (86)

Compressive Strength, Flatwise

ASTM D-695

psi (MPa)

36,000 (248)

Flexural Strength, Lengthwise

ASTM D-790

psi (MPa)

29,000 (200)

Maximum Operating Temperature

--

°F (°C)

410 (210)

Shear Strength

ASTM D-732

psi (MPa)

11,100 (77)

Dissipation Factor, MHz 60 Hz

ASTM D-150

--

0.013 0.37

Arc Resistance

ASTM D-495

Seconds

180

Dielectric Strength, Short Time, In Oil

ASTM D-149

V/mil (kV/mm)

625 (24.4)

Dielectric Strength, Short Time, In Air

ASTM D-149

V/mil (kV/mm)

500 (19.5

Insulation Resistance

ASTM D-257

Ohm x 10

145.0

Permittivity, MHz 60 Hz

ASTM D-150

--

12

3.7 4.6

Tel (314) 423-5200 Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Dry Type Transformer Insulation Handbook

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MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

HST-II High Temperature Glass Polyester

Description:

HST-II is a specialty grade glass mat, polyester resin insulation material that carries UL thermal recognition of 220°C electrical and 210°C mechanical. HST-II also qualifies as an IEEE 220°C Class R material.

Availability:

Molded Sheets:

Thickness: Sheet Sizes:

Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Key Characteristics

Test Method

Units - English (SI)

Typical Values

Standard Color

--

--

Light Brown

Specific Gravity

ASTM D-792

lbs./in (g/cc)

0.058 (1.61)

Water Absorption (.125”)

ASTM D-570

%

0.3

Tensile Strength

ASTM D-638

psi (MPa)

13,000 (90)

Compressive Strength, Flatwise

ASTM D-695

psi (MPa)

33,000 (228)

Flexural Strength, Lengthwise

ASTM D-790

psi (MPa)

25,000 (172)

Flexural Modulus of Elasticity

ASTM D-790

--

1.7 x 106

Shear Strength

ASTM D-732

psi (MPa)

14,000 (97)

Bond Strength (.50”)

ASTM D-229

psi (MPa)

1,400 (10)

Flammability

UL 94

--

HB

Flame Resistance Ignition Time

ASTM D-229-11

Seconds

77

Flame Resistance Burning Time

ASTM D-229-11

Seconds

256

Izod Impact Strength, Edgewise

ASTM D-256

ft.-lbs./in.

12.0

Barcol Hardness

--

--

52

Temperature Class

--

°C

220

Fax (314) 423-9009

SI Units 0.8 mm to 50.8 mm 94 cm x 185 cm, 122 cm x 244 cm

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

43 www.thegundcompany.com

Dry Type Transformer Insulation Handbook

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English Units 0.032” to 2.0” 36” x 72”, 48” x 96”

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade GPO-3, Glass Polyester Laminate Angles & Channels

Description:

NEMA Grade GPO-3 Angles and Channels are molded composite shapes that offer the designer choices of structural insulating members whose characteristics combine good electrical properties, high strength to weight ratio, and flame and track resistance.

Availability:

Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Channels

Hat Shapped Channels

Width

Width Leg

Angles

Terminal Strips Width

Leg B

Leg

Height

Thickness

Leg A

Channels

Hat Shapped Channels

Part No.

Width

Leg

Thickness

Part No.

Width

Leg

Thickness

2875

2”

9/16”

1/8”

1161

4-19/32”

7/8”

1/8”

2617

2”

13/16”

1/8”

2091

5”

1-3/8”

1/8”

1144

2”

1”

1/4”

1272

9-9/16”

2-3/8”

3/16”

3242009

2”

7/8”

1/4”

3232010

2”

1”

3/16”

2212

2-5/16”

3/4”

1/8’

Part No.

Legs (A & B) Thickness

1177

2-9/16”

1-7/32”

1/8”

2878

1”

1/8”

1166

3”

7/8”

1/4”

2880

1-1/2”

1/8”

2888

3”

1-1/2”

1/4”

2881

1-1/2”

3/16”

1939

3-9/16”

2-9/16”

3/16”

2882

1-1/2”

1/4”

1791

3-19/32”

1-1/8”

1/8”

2884

2”

1/4”

1155

4”

1-1/8”

1/4”

2885

3”

1/4”

2242

4”

1-3/8”

3/16”

1940

4-9/16”

2-9/16”

9/32”

1788

4-3/4”

1-5/8”

3/16”

Part No.

Leg A

Leg B

Thickness

5/32”

2877

2-3/4”

2”

1/4”

3133716

3-3/4”

1-5/8”

3/16”

Equal Leg Angles

Unequal Leg Angles

Tel (314) 423-5200

2825

5-1/2”

1-1/4”

2288

6-3/8”

2”

9/32”

1844

8-1/2”

2-11/16”

3/16”

1936

9-21/32”

1-5/8”

1/8”

2250

11-9/32”

1-5/8”

3/8”

Part No.

Width

Height

Thickness

2120

11-1/2”

1-7/16”

5/32”

2710

7/16”

1-1/2”

1/4”

Terminal Strips

Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

44 www.thegundcompany.com

Dry Type Transformer Insulation Handbook

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

NEMA Grade GPO-3, Glass Polyester Laminate Angles & Channels Key Characteristics

Test Method

Units - English (SI)

Typical Values

Standard Color

--

--

Red

Tensile Strength

ASTM D-638

psi

15,000

Tensile Modulus

ASTM D-638

psi x 106

1.7

Flexural Strength

ASTM D-790

psi

25,000

Flexural Strength, 130°C

ASTM D-790

psi

Flexural Modulus

ASTM D-790

psi x 10

1.2

Compressive Strength, Flatwise Edgewise

ASTM D-695

psi

42,000 20,000

Shear Strength

ASTM D-732

psi

14,500

13,000 6

IZOD Impact Strength, Notched

ASTM D-256

ft.lb./in.

9.6

Water Absorption

ASTM D-570

% by wt.

0.3

Specific Gravity

ASTM D-792

--

1.8

Dielectric Strength, Perpendicular Parallel

ASTM D-149

Vpm kV

200 45

Arc Resistance

ASTM D-495

Seconds

185

Inclined Plane Track Resistance

ASTM D-2303

Minutes

500+

Thermal Conductivity

ASTM C-177

BTU/hr./ft./in./°F

1.9

UL Temperature Index, Electrical Mechanical

UL 746B

°C

130 160

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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*These materials are manufactured in numerous sizes, shapes, and thicknesses. The data shown is a composite of all products.

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

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MATERIAL DATA SHEET Item:

Standoff Insulators

Description:

Standoff Insulators are molded of UL recognized flame-resistant and fiberglass reinforced thermoset polyester molding compound. They feature shatter resistance and closer height tolerances than commonly available in porcelain insulators. Moisture and heat resistance properties of standoff insulators are higher than those of conventional plastic insulators. Voltage Rating: This is intended to be a guide for indoor service. Insulators mounted within a suitable electrical cabinet are considered indoors even though the cabinet itself is outdoors. An insulator will withstand its rated voltage continuously by industry standards or other specifications may require a different spacing from conductor to ground for a particular voltage. Wet or dirty conditions may require derating an insulator. Outdoor Use: Standoff Insulators are primarily intended to be used indoors. Insulators 1642 and 2450 should not be used upside down if there is a possibility of the center hole filling with water. Short Time Electrical Strength: For most insulator designs, this is the external flashover voltage in air. A few insulators will puncture instead. The value given is an average of 15 parts tested. Cantilever Strength: One end of the insulator is bolted to a flat plate and force is applied to the insert on the other end in a direction parallel to the end at a distance from the plate equal to the insulator height. Torque Strength: One end of the insulator is bolted to a flat plate and a normal steel bolt is tightened into the insert on the other end with a torque wrench. The bolt will fail before the insulator and the values published are approximately the values at which the bolt fails. If you use high tensile steel bolts, the insert threads will strip before the bolts fail, but at higher torque values than we publish. 5kV and 15kV insulators are tested differently.

Tel (314) 423-5200

1 2

Key Characteristics

1641

2710

2781

3061

5405

5420

5612

Tensile Strength (lbs.)

2,500

7,000

3,500

1,800

6,500

6,500

1,000

Cantilever Strength (lbs.)

2,000

10,000

1,500

800

2,000

1,500

675

Height Tolerance (in.)

± 0.015

± 0.015

± 0.015

± 0.015

± 0.015

± 0.015

± 0.015

Voltage Rating1 (V)

2,500

3,400 - 5,500 3,200 - 5,500

600 - 2,700

5,000

15,000

600

Arc Resistance (Seconds)

180

195

180

180

180

180

180

Tracking Index (V)

500+

500+

500+

500+

500+

500+

500+

Creep Distance2 (in.)

3.25

H+0.50

H+0.313

H+0.25

4.0

7.0

H

Basic Impulse Level (V)

n/a

n/a

n/a

n/a

60,000

90,000

n/a

Dielectric Strength (V)

20,000

20,000

20,000

18,000

20,000

20,000

500

Water Absorption (%)

0.14

0.14

0.14

0.14

0.14

0.14

0.14

UL Flame Resistance

94 V-O

94 V-O

94 V-O

94 V-O

94 V-O

94 V-O

94 V-O

Voltage rating increases with insulator height H = insulator height

Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Dry Type Transformer Insulation Handbook

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ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

Standoff Insulators

Part No.

Cross Reference Height Thread Size Part No.

Pieces Per Case

Weight Per Case, lbs.

*AR-1641-16A 1461-1A

2.125”

3/8-16 x 5/8 DEEP

48

34

*AR-1641-13A 1461-1B

2.125”

½- 13 x 5/8 DEEP

48

30

2.125”

7/16-14 x 5/8 DEEP 48

33

AR-1641-14A --

*UL recognized components under UL Standard 891 File No. E79967

Part No.

Cross Reference Height Thread Size Part No.

Pieces Per Weight Per Case Case, lbs.

*AR-2781-16A 1872-1A

2.50”

3/8-16 x 5/8 DEEP

48

27

*AR-2781-13A 1872-2A

2.50”

3/8-13 x 5/8 DEEP

48

24

2.625”

5/8-11 x ¾ DEEP (Steel or Alum.)

48

26

*AR-2781-16B 1872-1B

2.75”

3/8-16 x 5/8 DEEP

48

31

*AR-2781-16C 1872-1C

3”

3/8-16 x 5/8 DEEP

48

35

*AR-2781-11S --

*AR-2781-16D 1872-1D

3.25”

3/8-16 x 5/8 DEEP

48

31

AR-2781-16E 1872-1E

3.50”

3/8-16 x 5/8 DEEP

36

33

AR-2781-16F --

3.50”

8m x 1.25 – 8 Thread 36

31

*UL recognized components under UL Standard 891 File No. E79967

Pieces Per Weight Per Case Case, lbs.

*AR-3061-16A --

1.375”

3/8-16 x 3/8 DEEP (Steel or Alum.)

100

23-20

*AR-3061-16B 2015-2A

1.50”

3/8-16 x 3/8 DEEP

100

28

*AR-3061-16C 2015-2B

1.75”

3/8-16 x 3/8 DEEP

75

28

*AR-3061-16D 2015-2C

2”

3/8-16 x 5/8 DEEP

75

29

*AR-3061-16E

2.25”

3/8-16 x 5/8 DEEP

70

29

AR-3061-16G --

2.75”

3/8-16 x 5/8 DEEP

50

25

AR-3061-18B --

1.50”

5/16-18 x 0.562

100

28

1.375”

8m x 1.25 – Thread

100

22

AR-30618MA

2015-3D

--

Fax (314) 423-9009

Cross Reference Height Thread Size Part No.

*UL recognized components under UL Standard 891 File No. E79967

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Standoff Insulators

Item:

1”, 1-1/4”

Part No.

Cross Reference Height Thread Size Part No.

Pieces Per Weight Per Case Case, lbs.

*AR-5612-20A

2165-1A

1”

¼-20 x ¼ DEEP

300

90

*AR-5612-18A

--

1”

5/16-18 x ¼ DEEP

150

9

*AR-5612-16A

--

1”

3/8-16 x 14 DEEP

150

9

*AR-5612-20B

2165-1B

1.25”

¼-20 x ¼ DEEP

300

23

*AR-5612-16B

--

1.25”

3/8-16 x 3/8 DEEP

100

7

AR-5612-6MA --

1”

6M x 1.5-5 Thrd. Alum.

150

9

AR-5612-8M

1”

8M x 1.25-5 Thrd. Alum.

150

9

--

*UL recognized components under UL Standard 891 File No. E79967

Part No.

Cross Reference Part No.

Height Thread Size

Pieces Per Case

Weight Per Case, lbs.

*AR-2781-16A 1872-1A

2.50”

3/8-16 x 5/8 DEEP

48

27

*AR-2781-13A 1872-2A

2.50”

3/8-13 x 5/8 DEEP

48

24

*AR-2781-11S

2.625”

5/8-11 x ¾ DEEP (Steel or Alum.)

48

26

*AR-2781-16B 1872-1B

2.75”

3/8-16 x 5/8 DEEP

48

31

*AR-2781-16C 1872-1C

3”

3/8-16 x 5/8 DEEP

48

35

*AR-2781-16D 1872-1D

3.25”

3/8-16 x 5/8 DEEP

48

31

AR-2781-16E 1872-1E

3.50”

3/8-16 x 5/8 DEEP

36

33

AR-2781-16F

3.50”

8m x 1.25 – Thrd.

36

31

--

--

*UL recognized components under UL Standard 891 File No. E79967

  



Part No.

Height Thread Size

Weight Per Piece, lbs.

2035-1

3.50”

1.13

2” Bolt Circle

 

Tel (314) 423-5200 Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

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INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

Standoff Insulators

Part No.



Cross Reference Part No.

Height Thread Size

Pieces Per Case

Weight Per Case, lbs.

*AR-5405-16A --

3.50”

3/8-16 x ¾ DEEP

32

58

*NT-5404-16A 1642-10E

3.50”

3/8-13 x ¾ DEEP

32

58

Height

Thread Size

Pieces Per Weight Per Case Case, lbs.

*AR-5405-16A --

6”

3/8-16 x ¾ DEEP

16

48

*NT-5405-16A

6”

3/8-13 x ¾ DEEP

16

48

*UL recognized components under UL Standard 891 File No. E79967 *Offered in two-bolt or four-bolt styles



Part No.



Cross Reference Part No. 2450-11

*UL recognized components under UL Standard 891 File No. E79967 *Offered in two-bolt or four-bolt styles

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

Glass Polyester Solid Rod & Bar Products

Description:

Glass Polyester Solid Bar & Rod Products are fiberglass-reinforced thermoset polyester shapes that exhibit properties desirable for a wide range of structural and electrical applications. Common shapes include Rounds, Squares, and “Dogbones.”

Availability:

Fabricated Parts: Rectangles

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers Rounds



Dogbones



Squares





 



Key Characteristics

Test Method

Units - English (SI)

155°C Polyester

220°C Polyester

Standard Color

--

--

White/Tan

Gray

Ultimate Tensile Strength

ASTM D-638

psi (MPa)

70,000 (483)

70,000 (483) 35,000 (241) 20,000 (138) 2.5 x 106 (17,237) 2.0 x 106 (13,790)

Flexural Strength, Flatwise Crosswise

ASTM D-790

psi (MPa)

25,000 (172) 15,000 (103)

Flexural Modulus, Flatwise Crosswise

ASTM D-790

ksi (MPa)

2 x 106 (13,790) 1.5 x 106 (10,342)

Impact Strength

ASTM D-256

ft.lb./in.

50

50 20,000 (138) 40,000 (276) 300 (11.7) 50

Compressive Strength, Flatwise Lengthwise

ASTM D-695

psi (MPa)

20,000 (138) 40,000 (276)

Dielectric Strength, Perpendicular Parallel

ASTM D-149

Vpm (kV/mm) kV/in.

300 (11.7) 50

Power Factor, 60 Hz

ASTM D-150

--

0.03

0.03

Dielectric Constant, 60 Hz

ASTM D-150

--

5.0

5.0

Tel (314) 423-5200

Arc Resistance

ASTM D-495

Seconds

100

120

Thermal Coefficient of Expansion

ASTM D-696

in./in./°F

3 x 10-6

3 x 10-6

Thermal Conductivity

--

BTU/hr./sq.ft./in.°F

4

4 0.17 0.75 0.19

Weight Loss, 200 hrs. at 150°C 200 hrs. at 200°C

--

%

1.0 6.1

Extractables in Freon 22

--

%

1.05

Specific gravity

ASTM D-792

--

1.95

1.95

Water Absorption

ASTM D-349

%

0.3

0.3

Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Dry Type Transformer Insulation Handbook

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The Gund Company, Inc

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

MATERIAL DATA SHEET Item:

Nomex™ Aramid Paper Type 410

Description:

Nomex™ paper is produced from short length fibers called floc and small binder particles called fibrids of high temperature resistant aramid polymer. These constituents, floc, and fibrids are formed into a sheet structure on a Fourdrinier paper machine without the use of additional binders, fillers, or sizers. The products is then calendered with heat and pressure to densify it to a bulk specific gravity of 0.7 to 1.2 (depending on its thickness). The paper is available in rolls and sheets of various widths and in thickness of 2 to 30 mils (0.05 to 0.76 millimeters). Type 410 paper also retains good electrical properties at high relative humidity as shown in Table III (page 3 of 3). The dielectric strength is essentially the same for Type 410 paper conditioned at 0 and 95% relative humidity. The dielectric constant dissipation, and volume resistivity are affected only slightly over the same range. Nomex™ paper is fully suitable for continuous operation at 220°C (430°F). More than ten years of commercial experience with Nomex™ paper in a broad variety of high temperature electrical applications have verified these extrapolations. Measurements show, for example, that Nomex™ Type 410 Paper will maintain 300 volts/mil (12kV/mm) dielectric strength for several hours at 400°C (750°F), which is the performance predicted by extrapolating the Arrhenius curve. This means that Nomex™ paper offers outstanding protection against short-term high-temperature excursions caused by stalled rotors or other overload conditions. The molecular structure responsible for the excellent thermal stability of Nomex™ Type 410 Aramid Paper also results in outstanding chemical stability and resistance to most common acids and alkalines. Nomex™ Type 410 paper is fully compatible and used commercially with transformer oils, silicones, and refrigerants. Nomex™ paper is also compatible with common classes of electrical varnishes and adhesives as well as other components of electrical equipment. Performance in Oils: The impulse dielectric strength of Nomex™ Type 410 paper impregnated with mineral oil is significantly better than that of impregnated kraft paper of the same thickness when tested with 125kV impulse generator. Physical Properties: Typically, physical properties of Nomex™ Type 410 paper at room temperature and 50% relative humidity, in both the machine direction (MD) and cross-machine direction (CMD), are listed in Table II (page 2 of 3). The high temperature properties and thermal stability of Nomex™ paper are outstanding. With increasing temperature, there is a gradual decrease in tensile strength, such that at 225°C (435°F) it retains about two-thirds of its room temperature value. Break elongation remains relatively constant up to 200°C (390°F).

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Nomex™ paper also retains good physical properties at very low temperatures. For example, at the temperature of liquid nitrogen, -196°C (-320°F), the tensile strength of 10 mil (0.25 millimeters) of Nomex™ Type 410 increases 30-60% over room temperature, while elongation to break exceeds 3% (better than most inorganic materials at room temperature).

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Nomex™ Aramid Paper Type 410

Item:

(Continued from page 1) Water acts much like a plasticizer on Nomex™ paper. The rate of moisture pick-up of Nomex™ Type 410 paper at a given relative humidity and temperature varies inversely with the paper’s thickness, density, and basis weight. At equilibrium, the percentage of moisture absorbed by Nomex™ paper is approximately one-tenth the relative humidity. The effect of relative humidity on the dimensions of Nomex™ paper is indicated in Table IV (page 3 of 3). The optimum balance of properties of Nomex™ Type 410 paper is obtained at 3 – 5% moisture content which corresponds to equilibrium at 30 – 50% RH. Increasing the moisture content to 7% (based on dry weight) generally improves the paper’s mechanical properties to the following extent: significant increases in elongation, toughness, fold endurance, and Finch and impact tear strength.

Table I: Electrical Properties of Nomex™ Aramid Paper Type 410 Key Characteristics

Test Method Units

Typical Values, Mils (Inches) 2 (0.05)

3 (0.08)

4 (0.10)

530 21

590 23

630 25

690 27

5 (0.13)

830 33

7 (0.18)

850 34

10 (0.25)

1000 Hz 2.0

2.1

2.2

2.3

2.5

2.6

1000 Hz 0.007

0.008

0.009

0.010

0.012

0.014

Dielectric Strength, AC Rapid Rise

ASTM D-149

V/mil kV/mm

Dielectric Constant

ASTM D-150

Dissipation Factor

ASTM D-150

Key Characteristics

Test Method Units

Dielectric Strength, AC Rapid Rise

ASTM D-149

V/mil kV/mm

Dielectric Constant

ASTM D-150

1000 Hz

2.8

3.0

3.3

3.3

3.3

3.4

Dissipation Factor

ASTM D-150

1000 Hz

0.015

0.016

0.018

0.018

0.019

0.020

Typical Values, Mils (Inches) 12 (0.30) 15 (0.38) 20 (0.51) 24 (0.61) 29 (0.74) 30 (0.76) 860 34

860 34

770 30

750 30

730 29

700 28

Table II: Electrical Properties vs. Relative Humidity for Nomex™ Aramid Paper Type 410 (10 mil, 0.25 mm)

Tel (314) 423-5200

Relative Humidity

Dielectric Strength

Dielectric Constant

Dissipation Factor

Volume Resistivity

%

V/mil

Dry Oven

960

kV/mm

1000 Hz

1000 Hz

Ohm-cm

38

2.3

0.013

6 x 1016

50

920

36

2.6

0.014

2 x 1016

95

880

35

3.1

0.025

2 x 1014

Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Dry Type Transformer Insulation Handbook

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MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

Nomex™ Aramid Paper Type 410

Table III: Typical Properties of Nomex™ Type 410 Aramid Paper Electrical Properties

Test Method

Units

0.005”

0.010”

0.020”

0.030”

Dielectric Strength, AC Rapid Rise ASTM D-149 V/mil Full Wave Impulse 1250 ASTM D-3426

635 --

810 1,400

790 1,600

695 1,400

Dielectric Constant

ASTM D-150

--

2.4

2.7

3.4

3.7

Dissipation Factor

ASTM D-150

--

0.006

0.006

0.007

0.007

Mechanical Properties

Test Method

Units

Basis Weight

ASTM D-646

Oz./yd.

3.4

7.3

16.1

24.8

Specific Gravity

--

--

0.87

0.96

1.05

1.08

Tensile Strength MD CMD

ASTM D-828

lb./in.

80 40

175 85

375 215

520 350

Tear Resistance MD CMD

ASTM D-1004 lb.

7.3 3.6

16.0 9.2

36.4 24.1

54.1 43.0

Elmendorf Tear MD CMD

TAPPI-414

gm.

240 520

525 1010

1173 2000

n/a n/a

Shrinkage, 300°C (570°F)

--

%

0.7

0.5

0.3

0.3

0.005”

0.010”

0.020”

0.030”

Table IV: Effect of Relative Humidity on the Dimensions of Nomex™ Aramid Paper Type 410 Dielectric Constant

%

MD

CMD

MD

CMD

50

0.4

0.9

0.4

0.9

65

0.6

1.2

0.6

1.4

95

0.9

1.7

1.1

2.1

MD = Machine Direction CMD = Cross-Machine Direction

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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% Increase Over Oven Dry Conditions Relative Humidity

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

The Gund Company, Inc

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MATERIAL DATA SHEET Item:

Nomex™ Aramid Pressboard

Description:

Nomex™ Aramid Pressboard is composed of a synthetic aromatic polyamide in two forms: Floc

¼” long fibers to provide mechanical strength

Fibrids

Microscopic filmy particles to act as a filler and binder, to provide the dielectric strength and some key physical properties

Pressboard is made into sheet structures by specialized board-making methods. During this process, the fibrids join to form filmy webs between the fibers. In most cases, the sheet calendered (densified at high temperature and pressure) to permanently lock the components together and produce a relatively impermeable structure with high levels of electric and mechanical integrity. Availability:

Nomex™ Aramid Pressboard is available in three types: Type 992

A low-density pressboard. The low density allows easy formation of complex shapes and provides the highest saturability of the pressboard products.

Type 993

A medium-density pressboard. This material provides a balance of rigidity and conformability along with outstanding saturability and excellent electrical properties in oil.

Type 994

A high-density pressboard. It provides superior stability under compressive loads. Type 994 will also absorb oils and other fluids, but not as readily as Types 992 and 993.

Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

Tel (314) 423-5200 Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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Dry Type Transformer Insulation Handbook

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INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

TufQuin with Polyester Film

Description:

Quin-T TFT composites are a family of laminates based on Quin-T’s advanced high performance hybrid insulation material, TufQuin 110 hybrid inorganic/organic paper bonded to both of polyester film using a high-temperature resin system. TufQuin TFT laminate insulation is designed to meet the high-performance requirements found in Class H (180°C) rotating electrical apparatus and dry type transformers.

Application:

TufQuin TFT laminate insulation is designed for use as slot cell, phase and wedge insulation for motors and generators through Class H (180°C). They may also be used as layer and ground insulation in dry type transformers. TFT laminates provide excellent value in use as they exhibit a balanced blend of electrical, physical, and thermal capabilities on a cost-effective basis. They are the product of choice for manufacturers seeking to improve the reliability of their equipment by upgrading the performance of the flexible electrical insulation used.

Key Characteristics

Units - English (SI)

TFT-3-3-3

TFT-3-5-3

TFT-3-71/2-3

Thickness

Mil (mm)

9 (0.23)

11 (0.28)

14 (0.36)

Tensile Strength, MD

lb./yard2 (kg/m2)

100 (17.5)

173 (30.3)

196 (34.3)

Elongation, MD

%

22

20

20

Basis Weight

lb./yard2 (kg/m2)

0.55 (0.30)

0.68 (0.37)

0.83 (0.45)

Dielectric Breakdown Strength kV

10.8

14.5

16.1

Elmendorf Tear, MD CMD

405 920

544 1,459

552 1,830

Key Characteristics

Grams

Units - English (SI)

TFT-3-14-3

TFT-5-3-5

TFT-5-5-5

TFT-510-5

Thickness

Mil (mm)

20 (0.51)

13 (0.33)

15 (0.38)

20 (0.51)

Tensile Strength, MD

lb./yard2 (kg/m2)

240 (42)

112 (19.6)

143 (25.0)

229 (40.1)

Elongation, MD

%

18

22

21

20

Basis Weight

lb./yard2 (kg/m2)

1.22 (0.66)

0.71 (0.39)

0.87 (0.47)

1.23 (0.67)

Dielectric Breakdown Strength kV

19.5

11.8

15.0

19.1

Elmendorf Tear, MD CMD

1450 1,493

760 2,640

1056 3,060

960 2,725

Grams

Fax (314) 423-9009

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

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INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

TufQuin 110 & 120

Description:

TufQuin 110 is a flexible, conformable paper exhibiting physical toughness in the form of high tensile strength and excellent tear resistance. TufQuin 110 offers good dielectric strength characteristics and thermal conductivity in conjunction with high temperature performance. TufQuin 120 is generically the same as TufQuin 110, but this version employs a slightly different manufacturing process that yields thicker constructions while maintaining conformability. Both TufQuin 110 and 120 are qualified for use in electrical insulation systems up to Class N (200°C) as per UL 1446 and IEC Standard 60085; CSA Component Acceptance at 200°C.

Application:

Availability:

• • • • • •

Transformers, Coils, Reactors (layer, barrier, and end-turn insulation for dry type and oil filled) Spiral and Convolute-wound Tubing Motors and Generators (slot, phase, and wedge insulation) Wire and Cable Wrap Switchgear Insulation Capacitor Layer Insulation

Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

TufQuin 110 By Thickness, Mil (mm)

Key Characteristics

Units - English (SI)

Basis Weight

lb./yard2 (kg/m2)

Elongation, MD

%

10

12

15

19

18

Tensile Strength, MD

lb./yard2 (kg/m2)

12 (2.1)

15 (2.6)

20 (3.5)

24 (4.2)

50 (8.7)

Dielectric Breakdown Strength kV

0.4

0.6

0.7

0.8

2.0

Moisture Absorption

%

1.0

1.0

1.0

1.0

1.0

Total Moisture Content

%

1.5

1.5

1.5

1.5

1.5

2 (0.05)

2.5 (0.06) 3 (0.08)

0.10 (0.044) 0.13 (0.07)

0.16 (0.09)

5 (0.13)

10 (0.25)

0.26 (0.14)

0.53 (0.29)

TufQuin 120 By Thickness, Mil (mm)

Tel (314) 423-5200

Key Characteristics

Units - English (SI)

7.5 (0.19)

12 (0.30)

15 (0.38)

20 (0.21)

Basis Weight

lb./yard2 (kg/m2)

0.35 (0.19)

0.64 (0.35)

0.79 (0.43)

1.1 (0.60)

Elongation, MD

%

14

14

14

15

Tensile Strength, MD

lb./yard2 (kg/m2)

36 (6.3)

55 (9.6)

75 (13)

110 (19)

1.0

1.9

2.1

3.3

Dielectric Breakdown Strength kV

Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

56 www.thegundcompany.com

Dry Type Transformer Insulation Handbook

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

The Gund Company, Inc

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

MATERIAL DATA SHEET Item:

CeQuin with Glass & Film

Description:

CeQuin laminates are a series of unfired, ceramic-like non-asbestos, dielectric insulating papers that have been laminated to another material (substrate) for added strength and cut-through resistance. The CeQuin series base papers, being principally inorganic, imparts the desired electrical insulation properties; the laminating substrate imparts the needed physical strength. CeQuin I is a soft, flexible, conformable paper while CeQuin V is a stiff, thermally stabilized paper. CeQuin non-asbestos laminates are available in thicknesses from 3.5 to 60 millimeters and in a variety of strengths and surface textures. They are tough, but comfortable, with good tear, tensile, and stretch properties. CeQuin laminates have excellent thermal stability becuase of their primary inorganic composition. All show exceptional dimensional stability with negligible shrinkage after one week at 250°C. Dielectric strength remains stable after exposure to high temperatures. They retain over 70% of their original dielectric strength after exposure to 330°C for 1,000 hours. In addition, CeQuin laminates exhibit exceptionally high initial thermal conductivity. When compared to aramid paper insulation, this property allows for more compact design of equipment with a similar temperature rise, or lower temperature rise in the same size equipment. CeQuin laminates will compress slightly during winding. Wire will imbed in the paper surface, reducing slippage and increasing window fill. CeQuin laminates also readily absorb varnish, which further increases thermal conductivity and results in a more tightly bonded coil thus reducing coil noise.

Application:

CeQuin laminates are ideally suited for: • Ground, layer, and end-turn insulation in dry type transformers and stick-and-bobbin wound coils • Spiral and convolute wound tubes • Wire adn cable manufacture as thermal, flame, or electrical insulation • Conductor, coil, and phase insulation in rotating equipment Temperature Resistance: Since CeQuin laminates are principally inorganic, they are capable of satisfactory performance in the highest temperature electrical insulation systems. When impregnated with thermally stable electrical varnish, they will assume the aging characteristics normal to the saturating resin.

Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

57 www.thegundcompany.com

Dry Type Transformer Insulation Handbook

Tel (314) 423-5200

Availability:

Fax (314) 423-9009

Physical Characteristics: The base paper, the reinforcing material, and the thickness determine the physical and electrical characteristics. Polyester film laminates have the highest tear strength and excellent cut-through resistance. they also have strong “memory”, meaning they will tend to spring back to their original shape when folded, bent or shaped.

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET CeQuin with Glass & Film

Item:

CeQuin IF Key Characteristics

Test Method

By Thickness, Inches (mm)

Units - English (SI)

0.007 (0.18) 0.012 (0.3)

0.018 (0.46)

Tensile Strength

ASTM D-528

lb./1 in. (Kn/m)

5 - 2 (7)

10 - 2 (7)

15 - 3 (24.5)

Grammage

ASTM D-646

lb./yard2 (kg/m2)

0.22 (40)

0.32 (40)

0.43 (140)

V/mil (Kv)

8.3 (0.4)

8.8 (0.6)

3.0 (0.8)

Dielectric Breakdown ASTM D-149

CeQuin VF Key Characteristics

Test Method

By Thickness, Inches (mm)

Units - English (SI)

0.007 (0.18) 0.012 (0.3)

0.036 (0.91)

Tensile Strength

ASTM D-528

lb./1 in. (Kn/m)

5 - 2 (7)

10 - 2 (7)

3 - 30 - 3 (53)

Grammage

ASTM D-646

lb./yard2 (kg/m2)

0.22 (40)

0.32 (40)

1.0 (300)

V/mil (Kv)

8.3 (0.4)

8.8 (0.6)

4.5 (1.9)

Dielectric Breakdown ASTM D-149

CeQuin IR Key Characteristics

Test Method

By Thickness, Inches (mm)

Units - English (SI)

0.006 (0.15) 0.01 (0.25)

0.013 (0.33)

Tensile Strength

ASTM D-528

lb./1 in. (Kn/m)

3 - 3 (12)

7 - 3 (12)

10 - 3 (12)

Grammage

ASTM D-646

lb./yard2 (kg/m2)

0.11 (68)

0.27 (68)

0.36 (68)

V/mil (Kv)

0.6 (0.2)

1.4 (0.5)

2.0 (0.6)

Dielectric Breakdown ASTM D-149

CeQuin VG Key Characteristics

Test Method Units - English (SI)

Tensile Strength

ASTM D-528

lb./1 in. (Kn/m)

Grammage

ASTM D-646

Dielectric Breakdown ASTM D-149

CeQuin IGI

By Thickness, Inches (mm) 0.01 (0.25) 0.013 (0.33) 0.017 (0.43) 0.23 (0.58) 7 - 3 (24.5)

10 - 3 (24.5)

7 - 3 - 7 (24.5) 10 - 3 -10 (24.5)

lb./yard (kg/m )

0.27 (140)

0.38 (140)

0.54 (140)

0.65 (140)

V/mil (Kv)

1.4 (0.5)

2.0 (0.7)

2.8 (1.0)

4.0 (1.2)

2

2

CeQuin IFI

CeQuin VGV

By Thickness, Inches (mm)

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Key Characteristics

Test Method

Units - English (SI)

Tensile Strength

ASTM D-528

lb./1 in. (Kn/m)

3 - 3 (10.5)

5 - 3 -5 (24.5)

Grammage

ASTM D-646

lb./yard2 (kg/m2)

0.27 (60)

0.38 (140)

V/mil (Kv)

10 (0.5)

4.0 (4.0)

Dielectric Breakdown ASTM D-149

0.09 (0.23)

0.13 (0.33)

Fax (314) 423-9009

All of the information, suggestions, and recommendations pertaining to the properties and uses of the products herein are based upon tests and data believed to be accurate; however, the final determination regarding the suitability of any material described herein for the use contemplated, the manner of such use, and whether the use infringes any patents is the sole responsibility of the user. There is no warranty, expressed or implied, including, without limitation warranty of merchantability or fitness for a particular purpose. Under no circumstances shall we be liable for incidental or consequential loss or damage.

58 www.thegundcompany.com

Dry Type Transformer Insulation Handbook

The Gund Company, Inc

MANUFACTURERS OF

ELECTRICAL INSULATION MATERIALS

St. Louis, Missouri – USA TEL - 314.423.5200 FAX - 314.423.9009

INSULATING COMPONENTS FOR POWER SYSTEMS EQUIPMENT

MATERIAL DATA SHEET Item:

CeQuin I, II, III, V, & GESAT

Description:

The CeQuin products described herein are generically an aluminum silicate, unfired ceramic-like material which have had a combination of synthetic fibers and high-temperature binders engineered into their structures. This results in a family of products that have excellent electrical and physical characteristics for use in high-temperature electrical insulation applications. They are cost-effective materials that will outperform competitive organic materials that cost substantially more.

Availability:

Fabricated Parts:

The Gund Company custom fabricates insulation materials to the exact specifications and drawings of our customers

CeQuin I Key Characteristics

Units - English (SI)

Tensile Strength, MD

lb./yard (kg/m )

Elongation, MD

%

Grammage

lb./yard (kg/m )

2

By Thickness, Mil (mm) 3 (0.076)

2

5 (0.125)

10 (0.254) 15 (0.38)

30 (0.76)

4.5 (0.8)

5.7 (1.0)

15 (2.7)

19 (3.4)

25 (4.4)