NF C 33-042
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E: Insulated cables and their accessories for power systems – Anchoring devices for overhead and overhead-underground services with insulated cables, of rated voltage 0,6/1kV
F: Câbles isolés et leurs accessoires pour réseaux d’énergie – Matériels d’ancrage pour branchements aériens et aéro-souterrains en conducteurs isolés, de tension assignée 0,6/1kV
D: Isolierte Kabel und ihre Garnituren für Starkstromanlagen – Abspann-Geräte für Freileitungs und Freileitungs Unterflur Anschlüße mit Bündelleitern, für Nennspannung 0,6/1 kV
Accredited French Standard Decided by Director General of AFNOR. With sections 1 to 6 of the accredited standard NF EN 50483 of July 2009 replaces the accredited standard NF C 33-042 of February, 1999.
Correspondence
The current document does not have any equivalent to CEI or to CENELEC.
Summary
The current document defines the characteristics and tests applicable to Anchoring devices for overhead and overhead-underground services with insulated cables, of rated voltage 0,6/1 kV.
Describers
Electrical Network, overhead electrical line, underground electric wiring, insulated cable, insulated conductor, equipment, anchoring cable, characteristics, tests.
Modifications
As opposed to the replaced document, the revision of the standard done in order to conform with European test standards.
Corrections
NF C 33-042
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THE STANDARD
The Standard is meant to act as a basis in relationships between economic, scientific, technical and social partners. The Standard is essentially optional. However, when referenced in a contract, it is to be followed by the concerned parties. Upon regulation, use of part or entire standard can be made compulsory. The standard is a document drawn up out of consensus within a standardization committee upon requests of representatives of all interested parties. A public survey precedes the actual adoption of the standard. The Standard is examined regularly to evaluate the suitability to the current contexts. Every standard comes into effect from the date indicated on the first page.
UNDERSTANDING THE STANDARDS
Reader’s attention is drawn to the following points: The verbs “must / shall”, “have to” are used to express one or many requirements which ought to be respected to conform to the current document. These requirements can be found within the framework of the standard or in the appendix described “normative”. For test methodology, use of infinitives indicates requirements. Expressions such as “it is appropriate and recommended that” are used to express preferred possibilities but unrequired for conformity to the current document. Verbal forms of “can” are used to either give useful but noncompulsory suggestions or advice, or express authorization. Moreover, the current document can furnish extra information meant for facilitating comprehension or use of certain elements or for clarifying application, without any mention of requirement to be met. These elements are presented in the form of notes or appendices.
STANDARDISATION COMMITTEE Standardization Committee gathers in a given field of activity expertise necessary for working out French specifications and French positions on projects of European or international Standard. The Committee can also prepare experimental standards and instruction manuals. If you would like to comment on this text, or make suggestions for developments or participate in its revision, get in touch with
[email protected] . The composition of the Standardization Committee that has drawn up the current document is given below. When an expert represents an organization different from his parent organization this information is indicated by: parent organization (represented organization).
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Electric power cables and their accessories
UTE/UF 20
List of organizations represented in the standardization committee Secrétariat : UTE BNA (BUREAU DE NORMALISATION DE L’AUTOMOBILE) – UTAC BNPP (BUREAU DE NORMALISATION DES PLASTIQUES ET DE LA PLASTURGIE) BOREALIS France EDF (ÉLECTRICITÉ DE France) EFECTIS France FFIE (FÉDÉRATION FRANÇAISE DES ENTREPRISES DE GÉNIE ÉLECTRIQUE ET ÉNERGÉTIQUE) FIF (FEDERATION DES INDUSTRIES FERROVIAIRES) GIMELEC (GROUPEMENT DES INDUSTRIES DE L’ÉQUIPEMENT ÉLECTRIQUE ET ÉNERGÉTIQUE) LCIE (LABORATOIRE CENTRAL DES INDUSTRIES ÉLECTRIQUES) MINISTÉRE DU TRAVAIL, DES RELATIONS SOCIALES, DE LA FAMILLE, DE LA SOLIDARITÉ ET DE LA VILLE RATP (RÉGIE AUTONOME DES TRANSPORTS PARISIENS) RTE (RESEAU DE TRANSPORT DE L’ELECTRICITE) SNCF (SOCIÉTÉ NATIONALE DES CHEMINS DE FER FRANÇAIS) SYCABEL (SYNDICAT PROFESSIONNEL DES FABRICANTS DE FILS ET CÂBLES ÉLECTRIQUES ET DE COMMUNICATION)
NF C 33-042
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NATIONAL FOREWORD There is no French or European standard specific to anchoring devices for overhead and overhead-underground services with insulated cabled, of rated voltage 0,6/1 kV. The current document has been prepared by Commission UF 20, Electric power cables and their accessories. Provisions of this standard were part of a specification of an internal company at EDF. The tests described in this document are type tests. They assure the user of satisfying performance, by making use of accessories which subjected to these tests is successful. This ensures the continuity and the quality of their manufacture. The current document cancels and replaces the standard NF C 33-042 of February, 1999.
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TABLE OF CONTENTS NATI ONAL FORE WARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.
Scope of Application................................................................................................................................................... 6
2.
Normative References ................................................................................................................................................ 6
3.
Terms and definitions ................................................................................................................................................. 6
4.
Main characteristics ................................................................................................................................................... 8
5.
Nomenclature of devices ............................................................................................................................................ 8 5.1 Anchoring Clamps ............................................................................................................................................. 8 5.2 Anchoring clamp without adjustable hook ......................................................................................................... 8 5.3 Anchoring clamp with hook ............................................................................................................................... 8 5.4 Anchoring clamp with adjustable hook .............................................................................................................. 9 5.5 Anchoring clamp for installation with hot stick .................................................................................................. 9 5.6 Anchoring clamp for underground cables .......................................................................................................... 9
6.
Anchoring devices range............................................................................................................................................. 9 6.1 Anchoring clamp for overhead services ............................................................................................................. 9 6.2 Anchoring clamp for overhead-underground services ........................................................................................ 9
7.
Type Tests ................................................................................................................................................................ 10 7.1 Definition ........................................................................................................................................................ 10 7.2 General test conditions ................................................................................................................................... 10 7.3 Mechanical tests ............................................................................................................................................. 11 7.4 Dielectric tests ................................................................................................................................................ 12 7.5 Dielectrical voltage tests ................................................................................................................................. 12 7.6 Climatic ageing test ......................................................................................................................................... 12 7.7 Corrosion resistance test ................................................................................................................................. 13 7.8 Available ......................................................................................................................................................... 13 7.9 Endurance test under mechanical and thermal constraints .............................................................................. 13
8.
Markings and Identifications .................................................................................................................................... 14 8.1 Check for permanent marking ......................................................................................................................... 14 8.2 Verification of indelibility of the markings........................................................................................................ 14
9.
Conformity to the standard products........................................................................................................................ 14 9.1 General tests................................................................................................................................................... 14 9.2 Routine tests and sample tests ........................................................................................................................ 14
Appendix A (normative) Number of samples to be subjected to tests .............................................................................. 15 Bibliography.................................................................................................................................................................... 16
NF C 33-042
1
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Scope of application
The current document concerns (anchoring/ dead end clamps) of insulated overhead conductor bundles of rated voltage of 0,6/1 kV, used for the making of services strung on supports or walls. These bundles are defined in the standards and 2 2 include two or four solid wire cables in aluminium of (area/ surface) 16 mm or 25mm . The document also applies to anchoring devices of insulated underground cables, in accordance with the standard NF C 33-210 for areas (or surfaces) of solid wire core in aluminium of 16 mm2 to 35 mm2 included, used for manufacture of overhead-underground services and also to any specification of underground service cables, figuring in a client-supplier agreement. These (anchoring/ dead end) clamps are meant to be installed on these bundles and cables. The current document establishes the principal characteristics of different anchoring devices and defines the tests they have to pass.
2
Normative references
The following reference documents are indispensable to the application of the current document. The last edition of the reference document applies (including the possible modifications). NF C 01-461, International Electrotechnical Vocabulary – Section 461: Electric cables NF C 33-209, Insulated or protected cables for power systems – Insulated cables assembled in a bundle for overhead networks, of rated voltage 0,6/1 kV NF C 33-210, Insulated or protected cables for power systems – Polyethylene reticulated rigid insulated cables under protective sleeving - Made of Series H1 XDV-A NF EN 50483–1:2009, Prescriptions (or limitations) related to tests of accessories for low voltage twisted overhead networks. Part 1: General remarks (classification index: C 33-045-1). NF EN 50483-2:2009, Prescriptions related to tests of accessories for low voltage overhead twisted networks. Part 2: Anchoring and suspension devices for overhead networks with self-supporting twisted insulated conductors (classification index: C 33-045-2).
3
Terms and definitions
For the purpose of the current document, the terms and definitions of standards NF EN 50483-1 and NF EN 50483-2 as well as the following apply. Figures 1 to 7 are given as general information.
3.1 Anchoring clamps type PA and PAC Clamping device for attaching an insulated overhead cable to a support and designed for transmitting the indicated mechanical voltage of the cable or of the carrier, to the support. [SOURCE: VEI 461-18-01 modified]
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3.2 Adjustable Anchoring clamp PAR Adjustable Anchoring clamp PAR must be able to offer a stroke of the incorporated setting system , at least equal to 50 mm with a pitch below or equal to 10 mm.
3.3 Anchoring clamp for remote work An anchoring clamp for remote work allows its distance installation by means of a pole.
3.4 Anchoring clamp for overhead-underground cables Anchoring clamp for overhead-underground cables tightens the underground cables directly onto its external shaft.
3.5 Fixation of the anchoring clamps Anchoring clamps must be able to be hung onto the fittings normally used on supports out of which the most common ones are : BQC : pigtail bolt on pole BQC : pigtail bolt on walls PQC : pigtail bracket plate on walls TQC : pigtail sealing type walls CB : Bracket and service clamp The principal dimensions of the pigtails and the closed ring are indicated below, Figures 1 and 2; Figure 2a shows a screw clamp. Dimension in millimeters.
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Main characteristics
The parts in contact with the insulator of the conductors must be themselves make in the insulating material in order to ensure double insulation of conductors and the parts must not deteriorate the insulating sleeves. All constituent parts must be un-losable, they cannot be lost. At any rate, the installation must be done without any tool. The PAD clamp must not include any conductive part of length above 350 mm in operation position.
5
Nomenclature of devices
5.1
Anchoring clamps
Anchoring clamp without hook for overhead services is denoted by the indicator PA: Anchoring Clamp, followed by the 2 maximum area (mm ) of the service conductor: 25 (see Figure 3)
5.2
Anchoring clamp without adjustable hook
Anchoring clamp without hook for overhead services are denoted by PAR: Adjustable anchoring clamp, followed by maximum area (mm2) of the service conductor: 25 (see Figure 4).
5.3
Anchoring clamp with hook
Anchoring clamp with incorporated hook incorporated for overhead services are denoted by the indicator PAC: Anchoring 2 clamp with a hook, followed by the maximum area (mm ) of the service conductor: 25 (see Figure 5).
NF C 33-042
5.4
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Anchoring clamp with adjustable hook
The adjustable Anchoring clamp for overhead services are denoted by the indicator PACR: Adjustable anchoring clamp with 2 a hook (mm ), followed by the maximum area of the service conductor: 25 (see Figure 6).
5.5
Anchoring clamp for installation with hot stick
Anchoring clamp for overhead services are denoted by the indicator PAD: Anchoring clamp for installation with hot stick, 2 followed by the maximum area (mm ) of the service conductor: 25, possibly adjustable (see Figure 7).
5.6
Anchoring clamp for underground cables
Anchoring clamp of underground cables for overhead-underground services are denoted by PAS: Anchoring clamps for underground cables, followed by the maximum area (mm2) of service underground cable: 35.
6
Anchoring devices range
6.1
Anchoring clamp for overhead services
Same material: PA 25, PAR 25, PAC 25, PACR 25, PAD 25 must allow the anchoring of all the service connections (or bundles).
6.2
Anchoring clamp for overhead-underground services
Same material PAS 35 must allow anchoring of three-phase underground service cables in the connection of overhead and underground lines.
NF C 33-042
7
Type Tests
7.1
Definition
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Type test Test required to be done before supply of a type of material covered by this standard on a general commercial basis , in order to demonstrate the satisfying operating characteristics which fulfill the planned application. NOTE The nature of the tests is such that once done, it is not necessary to repeat them unless changes have been introduced in the accessory materials during its conception or manufacture, changes which are likely to modify the operating characteristics of the accessory.
(SOURCE: NF EN 50483-2, definition 3.15) 7.2 7.2.1
General test conditions Identification of materials subjected to be tested
The materials subjected to tests must be identified by means of labels/marks and indications of Article 8 They must be accompanied by referenced and dated assembly instructions.
7.2.2
Preparation of conductors before tests
The conditions of paragraph 9.1 of standard NF EN 50483-1 apply with the following specifications: - The insulated conductors or cables used must conform to the norms indicated in Article 1; o
- The previous packaging of insulated conductors is made at a temperature of ( 120 ± 2) C
7.2.3
Available
For each of the specified tests, the number of samples and the test sequences are given in Appendix A.
7.2.4
Number of samples subjected to test
For each of the tests described, the numbers of samples as well as the sequence of the tests are indicated in the Appendix A.
7.2.5
Room temperature and humidity conditions
The conditions of paragraph 9.1 of the standard, NF EN 50483-1 apply. NOTE The humidity conditions defined in paragraph 9.1.9 of the standard NF EN 50483-1 can also be considered applicable for the entire duration of the corrosion test, the experiment shows that the influence of humidity rate between 25% and 30% on the results is negligible.
7.2.6
Frequency and wave form of test voltage at industrial frequency
The conditions of paragraph 9.1 of the standard, NF EN 50483-1 apply with these precisions only: - Wave form of voltage must be practically sinusoidal ; - The indicated values are root mean square values.
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7.2.7
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In the case of cable defects in the process of test
In the case of defects of cable outside the anchoring device the result is not taken into consideration and the tests are redone with a new device and new cable.
7.2.8
Available
7.2.9
Sanction
The number of samples to be tried is specified for each of the tests. The device is accepted as type device if all results are satisfying on all of the samples. If not, the device model is declared non-conforming and it is not accepted. A counter-test is allowed only if the defect of a sample results from an error in the assembly or from a cable defect as indicated in paragraph 7.2.7.
7.3
Mechanical tests
The tolerance range of strength is defined in paragraph 9.1.3 of standard NF EN 50483-1. Speed of application of strength is defined in paragraph 9.1.4 of standard NF EN 50483-1.
7.3.1 7.3.1.1
Modalities Test on clamps PA 25, PAR 25, PAC 25, PACR 25 and PAD 25
The anchoring devices are set up on a bundle of area 2 x 16 mm2 and on a bundle of area 4 x 25 mm2. For the mechanical tensile test, the test and notes 1 and 2 of paragraph 8.1.1 of standard NF EN 50483-2 apply with the following specifications: The load of 6 hour duration is reduced to 1500 N for 10 minutes. The increase in load is then limited to a value of 2000 N whatever be the area of the bundle. The dielectrical withstand strength tests of clamps and of bundles after mechanical tractions are to be done according to paragraph 7.4. For the PAR, PACR and PAD clamps according to adjustment technology, the test can be redone at different positions.
7.3.1.2
Test on the clamp PAS 35
The anchoring devices are set up on a bundle of area 3 x 16 mm2 + 1 x 16 mm2. NOTE For underground cables of particular specification, the minimum tri-phased area can be chosen for the test according to the agreement between the client and the supplier.
For the mechanical tensile test, the test and the notes 1 and 2 of paragraph 8.1.1 of the standard NF EN 50483-2 apply with the following specifications: The load of 6 hour duration is reduced to 500 N for 10 minutes. The increase in load is then limited to a value of 700 N. The dielectrical withstand strength tests of clamps and bundle after mechanical tractions are to be done according to paragraph 7.4
NF C 33-042
7.4
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Dielectrical tests
7.4.1
Dielectric voltage test on clamp
Dielectrical resistance test of paragraph 8.3.1 of the standard NF EN 50483-2 apply with the following specification: - Alternate Voltage value to apply is 6kV.
7.4.2
Dielectrical voltage test on overhead and underground cables
The dielectrical resistance test of paragraph 8.3.2 of the standard NF EN 50483-2 applies with the following specification: - The value of alternate voltage to be applied is 6 kV.
7.5
Dielectric Voltage test
The tensile test at low temperature of paragraph 8.1.4 of the standard NF EN 50483-2 and the note of Table 2 apply.
7.5.1
Tested devices
This test is done on devices of the following two kinds: a)
A length of service line bundle of area 2 x 16 mm2 on which are installed two anchoring clamps PA 25 or PAR 25 or PAC 25 or PACR 25 or PAD 25;
b) A length of insulated underground service cable of area 3 x 16 mm2 + 1 x 16 mm2, on which are fixed two PAS 35 clamps. NOTE For underground cables of particular specification, the minimum tri-phase area can be chosen for the tests according to the agreement between client and supplier.
7.5.2
Modalities
For device of type a) Static tensile load (T) applied at low temperature for 24 hours is equal to 1000 N. For device of type b) Cables used being of underground type, the marking to measure the shift is done under a load of 250 N, the static tensile load (T) applied at low temperature for 24 hours is equal to 350 N.
7.6
Climatic Ageing tests
For the method 1 of climatic ageing test of paragraph 8.5.2.1 of the standard NF EN 50483-2 applies.
7.6.1
Tested devices
This test is done on devices of the following two types: a)
A length of service line bundle of area 2 x 16 mm2 , on which are fixed two anchoring clamps PA 25 or PAR 25 or PAC 25 or PACR 25 or PAD 25;
b) A length of insulated underground service cable of area 3 x 16 mm2 + 1 x 16 mm2, on which are fixed two clamps PAS 35. NOTE For underground cables of particular specification, the minimum tri-phase area can be chosen according to the agreement between client and supplier.
NF C 33-042
7.6.2
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Modalities
The clamps alone are exposed to weathering and are then subjected to dielectrical sanctions and are then fixed onto the cables for mechanical sanctions. After weathering: - Dielectrical resistance is done according to paragraph 7.4.1 of the current document; - The mechanical test is done according to paragraph 7.3 of the current document with traction values reduced to 55 % of the values specified in this paragraph.
7.7
Corrosion resistance test
For corrosion resistance test, the test in gaseous atmosphere, Method 1 of paragraph 8.5.1.2 of standard NF EN 50483-2 applies.
7.7.1
Tested devices
This test is done on devices of the following two types: a)
A length of service line bundle of area 2 x 16 mm2 on which are fixed two anchoring clamps PA 25 or PAR 25 or PAC 25 or PACR 25 or PAD 2;
b) A length of insulated underground service cable of area 3 x 16 mm2 + 1 x 16 mm2 on which are fixed two PAS 35 clamps. NOTE For underground cables of particular specification, a minimum tri-phase area can be chosen according to the agreement between client and supplier.
7.7.2
Modalities
The clamps alone are exposed to weathering and corrosion and are fixed onto the cables for mechanical sanctions. After weathering and corrosion: The mechanical test in done according to paragraph 7.3 of the current document with the tensile values reduced to 55 % of the values specified in this paragraph.
7.8
Available
7.9
Endurance test under mechanical and thermal constraints
This test is applied only to anchoring devices for overhead service line bundles: Models PA 25 or PAR 25 or PAC 25 or PACR 25 or PAD 25. For this test, the test of paragraph of 8.1.3 “Tensile test at high temperature” of standard NF EN 50483-2 applies with the following specifications: - The test is done with area 2 x 16 mm2 ; - The dielectrical resistance tests of clamps and bundles after the endurance tests are to be done according to paragraph 7.4 of the current document.
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Markings and Labels
8.1
Check for permanent marking
Wordings of markings and labels on each device unit, clamps and brackets must figure in indelible manner: - Mark or suppliers acronyms as well as reference mark of the batch and the coding of the manufacturing factory ; - Designations according to the present document and possible commercial reference. On each unit pack must be mentioned the following: - Designation according to the present document and possible commercial reference; - Mark of acronym of the supplier as well as the reference mark of the batch; - The number of device units; - Reference to the present document.
8.2
Verification of indelibility of the markings
For verification of indelibility of the markings, the tests defined in paragraph 9.2 of standard NF EN 50483-1 applies.
9 9.1
Conformity to the standard products General remarks
Each qualified product is deemed as satisfying all the type tests of the current document which are applicable to the product. The supplier must present the results of the tests according to the current document, the number of samples of which is specified in the table A.1 of Appendix A.
9.2
Routine tests and sampling tests
Article 8 of the standard NF EN 50483-1 applies.
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Appendix A (Normative) Number of samples to be subjected to tests Table A.1
Test
Correspondence with NF EN 50483-2
7.3
Mechanical Tests
8.1.1
7.4.1
Di electric resistance test on clamp
8.3.1
7.4.2
Dielectrical test on overhead and underground cables Tensile test at low temperature Weathering test Corrosion resistance test Endurance test under mechanical and thermal constraints Verification of indelibility of marking
8.3.2
7.5 7.6 7.7 7.9 8.2
8.1.4 8.5.2 8.5.1 8.1.3 9.2 NF EN 50483-1
Total Number of Samples
Ai(n),…….Zi(n):
A to Z : Samples taken from one batch i : Test sequence n: Number of samples to be drawn * Test to be done on new device possibly intended for another test (see paragraph 8.2).
PA 25
PAR 25
PAC 25
PACR 25
PAD 25
PAS 35
A1(4) C3(2) D2(2) A2(4) C2(2) E2(2) A3(4) E3(2) B1(2) C1(2) D1(2) E1(2)
A1(4) C3(2) D2(2) A2(4) C2(2) E2(2) A3(4) E3(2) B1(2) C1(2) D1(2) E1(2)
A1(4) C3(2) D2(2) A2(4) C2(2) E2(2) A3(4) E3(2) B1(2) C1(2) D1(2) E1(2)
A1(4) C3(2) D2(2) A2(4) C2(2) E2(2) A3(4) E3(2) B1(2) C1(2) D1(2) E1(2)
A1(4) C3(2) D2(2) A2(4) C2(2) E2(2) A3(4) E3(2) B1(2) C1(2) D1(2) E1(2)
A1(2) C3(2) D2(2) A2(2) C2(2)
(1)*
(1)*
(1)*
(1)*
(1)*
(1)*
12
16
12
12
12
8
A3(2) B1(2) C1(2) D1(2)
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Bibliography
[1]
HD 603 S1 + Amendment A3, Aerial cables of rated voltage distribution 0,6/1 kV (Standard NF C 33-210 constitute the parties 5F of this document)
[2]
HD 626 S1 + Amendment 2, Aerial cables of rated voltage distribution U0/U (Um):0,6/1(1,2) kV (Standard NF C 33-209 constitute the parties 4E and 6E of this document)
[3]
NF EN 50483-6, Test requirements for low voltage aerial bundled cable accessories-Part 6: Environment testing (classification index: C 33-045-6).
