HV Circuit Breakers

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CPV2 Circuit Switcher 

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Low cost protection device

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Proven, global components

− FA2 and FA4 Mechanisms − 3AP arc-assist interrupter  

Designed & Tested for capacitor bank switching

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Continuous current rating 1200 – 3150 amps.

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Interrupting rating up to 40 kA

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3 cycle operation

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Wide variety of phase spacing and heights Virtually no maintenance

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CPV2 Circuit Switcher 

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Meets the requirements of ANSI C37

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Seismically qualified

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Leak rate lower ageing −Substitution of closing resistors -> higher reliability

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Circuit Breaker Type SPS2X_US

 One

Mechanism  One gear box located between A- and B- phase operating linkage  Two phases close at the same time, one phase mechanically staggered

Available on:  SPS2 72.5/40 US  SPS2 145/40 US  SPS2 145/63 US  SPS2 245/63 US

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PSD Functions

Control of the Closing Instant  PSD

Controller receive a closing command related to Voltage Zero Crossing  PSD Controller calculate delay time depending on: − Arcing Time − Mechanical closing Time − Control Voltage − Ambient temperature  Adaptive Mode − PSD Controller calculate the standardized mechanical operating time of the last 3 switching operations , using weighting factors for each 3 previous operations for the next switching operation to be configured automatically. − The basis for the functioning of the adaptive control is the reference contacts located on each phase operating lever. The reference contact signal indicate a change to the CB switching position.  Operate in case of sensor failure − If not all conditions for successful control of the switching instant are met, the PSD can be configured to: Not forward a command or Operate in any case.

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New 550 kV Design

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550 kV Circuit-Breaker  GIS/HIS/Dead-Tank

Common Circuit-Breaker Design for: GIS/HIS/Dead-Tank

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Platform 550 kV Circuit-Breaker 3AP2/3 Dead-Tank 5600 (220,5)

Porcelain bushing

8240 (324,4)

Current transformer Circuit-breaker Spring operator

3570 (140,5)

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Platform 550 kV Circuit-Breaker 3AP2/3 Dead-Tank 5750 (226,4)

Composite bushing

8570 (337)

Current transformer Circuit-breaker Spring operator

3540 (139,4)

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Platform 550 kV Circuit-Breaker  3AP2/3 Dead-Tank with Closing Resistors Capacitor

Filter material

Interrupter unit

Rupture disc

Closing resistor

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Surge Arresters Station and Distribution

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Surge Arresters Introduction and General Information

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Experience of more than...  75 years with surge protective devices  25 years with metal-oxide surge arresters  15 years with polymer (silicone) insulated high-voltage arresters

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Porcelain, polymer (silicone) and GIS arresters up to 800 kV

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Special applications for ...  SC, SVC and HVDC  seismic, heavy wind loads or heavy pollution conditions  customer specific designs, e.g. mounting configuration, etc.  MV such as plug-in arresters, traction vehicles, generator protection, limiters

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Developing, manufacturing and testing in accordance with international standards as IEC and ANSI

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Certified QA accreditation to ISO 9001

customers High Voltage Arresters up to 800 kV Series 3EL, 3EP, 3EQ, 3ES st Monitoring Devices 3EX6 040

3EX5 060/62

3EL2

Silicone

3EP4

3EP2

Porcelain

3EP3

3EQ1

3EQ4

Silicone

3EQ3

3ES2

3EX5 030

3ES5

GIS

3EX5 050

3ES7, 3ES9

customers Low- and Medium Voltage Arresters Series 3EA, 3EB, 3EC, 3EE, 3EF, 3EH, 3EK st

3EA1

3EF1...5

3EE2

Low voltage and motor/generator protection

3EK7

Distribution

3EC3

3EB1

Railway

3EB2

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Polymer Housed Surge Arresters for High Voltage Comparison of Design Principles

„Tube Design“

„Cage Design“

SIEMENS „3EQ“

SIEMENS „3EL“

„Wrapped Design“ Competition

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Silicone Housed Surge Arresters for High Voltage Type 3EL with directly moulded LSR Housing

Silicone rubber housing directly moulded onto the active part

Cage of 8 FRP rods as reinforcement structure Column of MO resistors totally surrounded by silicone

„Cage Design“

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Silicone Housed Surge Arresters for High Voltage Type 3EL – Design Principle: „Cage Design“

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Silicone Housed Surge Arresters for High Voltage 3EL - Comparison of Cantilever Strength 3EL arresters are up to 2 – 3 times stronger than other polymer designs!

Rated Cantilever Strength ( inch-lbs) Siemens

Ohio Brass

ABB

3EL2

PVN *

PEXLIM

WORKING

24,782

10,000 – 3,000

7,000 – 22,125

ULTIMATE

35,400

20,000 – 5,000

11,500 – 35,400

* JOINTS BETWEEN THE RUBBERS – POOR MECHANICALS -- HIGH DEFLECTION

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Silicone Housed Surge Arresters for High Voltage Type 3EL - Specification

Duty Cycle Rating

Ur 

192 kV

MCOV

Uc

152 kV

Nominal discharge current Energy absorption capability Pressure Relief Rating

In

10 kA 10 kJ/kV-MCOV 65 kA

TOV - 1 sec, no prior duty

1.475 x MCOV

“Working” Cantilever Strength

24782 inch-lbs

Creepage Distance Standard

301 inches ANSI / IEEE C62.11

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Silicone Housed Surge Arresters for High Voltage Series 3EQ - „The Robust One“ 3EQ3 up to Um = 800 kV

3EQ4 up to Um = 550 kV

3EQ1 up to Um = 362 kV

„Tube Design“

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Silicone Housed Surge Arresters for High Voltage 3EQ – Design Principle: “Tube design”

Pressure relief diaphragm Material: Stainless steel Thickness: 3EQ1: 0,1 mm 3EQ3/4: 0,2 mm Opening pressure: approx. 1 bar 

Silicone rubber sheds Material: RTV-silicone directly moulded onto FRP tube Housing filled with nitrogen to avoid oxygen (causing moisture) MO column (ZnO resistors) Support for MO column Material: FRP rods

Pressure relief vent Material: Aluminium

FRP tube (Fiber glass reinforced plastic) for outstanding mechanical strength

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Silicone Housed Surge Arresters for High Voltage 3EQ - Silicone Bonding to Flanges and FRP-tube The silicone rubber is directly moulded onto the FRP-tube and the aluminium flanges.

1 2 3

2

3

1

1 ... Aluminium flanges 2 ... Silicone rubber  3 ... FRP-tube

customers Silicone Housed Surge Arresters for High Voltage 3EQ - Comparison of Cantilever Strength st 3EQ arresters with tube design are more than 6- 8 times stronger than other polymer designs!

Rated Cantilever Strength ( inch-lbs) Siemens

Ohio Brass

ABB

3EQ

PVN *

PEXLIM

WORKING

37,000 – 260,000

N/A

22,125

ULTIMATE

53,000 – 370,000

N/A

35,400

* NO HIGH STRENGTH POLYMER DESIGN AVAILABLE

customers Silicone Housed Surge Arresters for High Voltage Comparison: Short Circuit and Overload Performance st 3EQ (tube design)

3EP

Cage Design

Before the test

Successful

Arc burns through silicone

3EQ

3EP

Cage Design

Successful

No mechanical structure left

customers Silicone Housed Surge Arresters for High Voltage 3EQ in a Seismic Shake Table Test st Test conditions in accordance with IEEE 693: • time history test • 1·g ground acceleration • max. 50% of specified mechanical stress 3EQ4 442-5PN5 ( Um = 550 kV)

3EQ4 306-3PN4 ( Um = 420 kV)

3EQ4 234-3PN4 ( Um = 300 kV)

3EQ1 156-2PN3 ( Um = 170 kV)

customers Benefits of SIEMENS Surge Arrester Designs Minimizing number of segments per arrester  st SIEMENS

Competition Example left side (SIEMENS): 3EQ with 2 segments for up to 550 kV system voltage Example right side (competition): 4 units per stack for the same voltage level or  arrester with additional insulators for stabilisation or  multiple segment arrester built up with MV arresters

Minimizing the number of segments per arrester means: more stability = higher mechanical cantilever strength  less segments to mount = less installation time --> less installation costs  less danger of moisture ingress between flanges  better voltage distribution 

all in all: The lower the number of segments per arrester stack the better the electrical and mechanical performance is.

customers Arrester Monitoring Devices Types 3EX6 040, 3EX5 030, 3EX5 050, 3EX5 060/62 st

Control Spark Gap

Surge Counter 

3EX6 040

3EX5 030

Surge Counter with leakage current meter 

Arrester monitor with remote indication

3EX5 050

3EX5 060/062

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Voltage Regulators

customers st JFR (Single Phase) 2.5 kV to 19.9 kV, 38.1 kVA to 889 kVA, 50/60 Hz Applications + / - 10 % Regulation in 32 Steps Equipped with Controller (MJ-XL)

customers st Voltage Regulator - Applications

Pole

Mounted

Platform

Mounted

Substation

customers st Three Phase Regulators SFR - 4330 V - 34500 V 500 kVA – 4000 kVA

Smaller foot print compared to three single phase units

customers st Three Phase (SFR)

Three Phase (SFR-X)

Tap changer in separate compartment

customers st Modern Control Panel

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What a Control Panel Does ?

It senses parameters like Voltage, Current, Power Flow direction and provides commands to the tap changer of VR. Additionally, the modern microprocessor based controllers are providing efficient communication, Energy Management and diagnostics capabilities to the power companies. •

Functionality • • • • •

Advanced Metering Superior Data Logging Intuitive User Interface Powerful Communications Continuing Enhancements

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Advanced Metering

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Instantaneous Voltages, Current, & Power

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Demand Voltages, Current, & Power

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Minimum/Maximum Time Stamps to the second 

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Energy Readings

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Support for 3-Phase Calculations

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Harmonics Displays to the 31st harmonic 

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Superior Event Logging

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Multiple “Event Types” • Tap Change, Tap at Neutral, Tap raise/lower to NN position, VLC/VRC active, Power Flow reversal, Configuration change,

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Precise time stamping

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High capacity (200 events)

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Critical data storage

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Non-volatile data storage

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Metering

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Tap Tracking

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Remote Control

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Controller Error 

Multiple Alerting

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Intuitive User Interface

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Menu-Driven

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Easy - to -read Displays

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Simple Menu Navigation

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Single Keystroke for Frequently accessed Functions

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Data Port Communications

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Use Industry-accepted Protocol

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Retrieve Data & Status

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Configure the panel

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Select Parity & Address

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Connect with off-the-shelf Cables

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Use off-the-shelf Modems

customers st Control Panel - Communication Modules

Fiber Optic Communications Port

RS232/RS485 Communications Port

Radio Integration via wireless communication (Cell Phone)

customers st Cost Saving – An example 

Communication Module can provide

− Reduced frequency of site visits − Data available instantaneously – Preventive maintenance instead of emergency work − Use software capability to safely overload VRs up to 60 % − Use available data to planning purposes − Check power quality while sitting in your office − Control Peak Loads (TO AVOID PENALTIES) and Reduce Voltage

customers st Firmware upgrades Use of a specially developed “Flash Loader”