NF C 33 042 AnchoringEquipments

English translation

NF C 33-042 1998 Indice de classement : C 33-042

Insulated cables and their accessories for power systems Anchoring devices for overhead and overhead-underground services with insulated cables, of rated voltage 0,6/1 kV D : Isolierte Kabel und ihre Garnituren für Starkstromanlagen Abspann-Geräte für Freileitungs und Freileitungs Unterflur Anschlüsse mit Bündelleitern,für Nennspannung 0,6/1 kV F : Câbles isolés et leurs accessoires pour réseaux d'énergie. Matériels d'ancrage pour branchements aériens et aérosouterrains en conducteurs isolés,de tension assignée 0,6/1 kV.

Certified French standard AFNOR General Manager's decision from ……. 1998 in order to take action the ……… 1998

correspondance Neither IEC standard nor CENELEC standard are existing on the same matter.

analyse

This document defines characteristics and tests applicable to anchoring devices for overhead and overhead-underground services with insulated cables, of rated voltage 0,6/1 kV.

descripteurs

Power system, overhead electrical line, insulated cable,underground cable, core, anchorage devices, characteristic, test

modifi cations

corrections

NF C 33-042 1998 indice de classement : C 33-042 Câbles isolés et leurs accessoires pour réseaux d'énergie Matériels d'ancrage pour branchements aériens et aérosouterrains en conducteurs isolés, de tension assignée 0,6/1 kV E : Insulated cables and their accessories for power systems Anchoring devices for overhead and overhead-underground services with insulated cables, of rated voltage 0,6/1 kV D : Isolierte Kabel und ihre Garnituren für Starkstromanlagen Abspann-Geräte für Freileitungs und Freileitungs Unterflur Anschlüe mit Bündelleitern, für Nennspannung 0,6/1 kV

Norme française homologuée par décision du Directeur Général de l'afnor le ................... 1998 pour prendre effet à compter du ..................... 1998 Remplace la norme expérimentale de juillet 1994. correspondance

Il n'existe pas de norme correspondante ni à la Commission Electrotechnique Internationale (CEI), ni au Comité Européen de Normalisation Electrotechnique (CENELEC).

analyse

Ce document définit les caractéristiques et les essais applicables aux matériels d'ancrage pour les branchements aériens et aérosouterrains en conducteurs isolés, de tension assignée 0,6/1 kV.

descripteurs

Réseau électrique, ligne électrique aérienne, canalisation électrique souterrainne, câble isolé, conducteur isolé, matériel, ancrage de câble, caractéristique, essai.

modifications

Ce document est une refonte complète de la norme expérimentale de juillet 1994

corrections

Edité par l'Union Technique de l'Electricité - 33 avenue du Général Leclerc - Boîte Postale N° 23 - 92262 Fontenay-aux-Roses Cedex - Tél. : 01 40 93 62 00

UTE

NF C 33-042 –1998

-2Foreword

The content of this standard was part of EDF specifications. Tests described in this document are type tests. Their purpose is to ensure the user that the accessories complying with the tests will operate properly as far as the continuity and the quality of series manufacturing are confirmed. France has been allowed by 92BT to publish a National standard (no standstill, decision D92/048).

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NF C 33-042 –1998

Contents 1 1.1 1.2 1.3 1.4 1.5

General...................................................................................................................................... 4 Scope and object........................................................................................................................ 4 Normative references................................................................................................................. 4 Definitions................................................................................................................................... 5 Main characteristics.................................................................................................................... 5 Designations............................................................................................................................... 6

2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9

Type tests.................................................................................................................................. 7 Definition..................................................................................................................................... 7 General test conditions............................................................................................................... 7 Mechanical tests......................................................................................................................... 8 Voltage test................................................................................................................................. 9 Dynamic test at low temperature.............................................................................................. 10 Climatic ageing test................................................................................................................... 11 Corrosion test............................................................................................................................ 11 Spare........................................................................................................................................ 12 Endurance test under mechanical and thermal stresses..........................................................12

3 3.1 3.2

Marking.................................................................................................................................... 13 Contents of marking.................................................................................................................. 13 Check for permanent marking.................................................................................................. 14

4 4.1 4.2

Compliance of products with this standard........................................................................14 General..................................................................................................................................... 14 Checking compliance of the supply..........................................................................................14

ANNEX A (Normative) Number of samples to be tested.................................................................15 ANNEX B (Normative) Endurance test under mechanical and thermal stresses for anchoring clamps................................................................................................................................................. 16 ANNEX C (Normative) Endurance test under mechanical and thermal stresses for anchoring clamps................................................................................................................................................. 17 ANNEX D (Normative) Illustrative set-up of the fitting for mechanical test at low temperature 18 ANNEX E (Normative) Tests for checking the compliance of the supply....................................19 ANNEX F (Informative) Bibliography...............................................................................................20

NF C 33-042 –1998

1

General

1.1

Scope and object

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This standard applies to anchoring clamps of overhead bundled cables used for the installations of lines of rated voltage 0,6/1 kV. These cables are defined in HD 626-6E and include two or four cores with aluminium stranded conductors of 16 mm² or 25 mm² cross-section. It also applies to anchorage devices of underground cables complying with HD 603-5F for solid aluminium conductor cross-sections ranging from 16 mm² to 35 mm² included, used for underground to overhead services. The anchoring clamps are designed to be installed on these bundles and cables. This standard specifies the main characteristics of all the anchoring devices and defines the tests they shall comply with. 1.2

Normative references

This standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to, or revisions of any of these publications, apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. IEC 60050 (461) (1984) and amendment 1 (1993) Electrotechnical vocabulary - Chapter 461 : Electric cables C 33-003 (July 1996) Equipment of overhead distributions made of bare or insulated conductors - Corrosion test. EN 60068-1 (July 1995) Environmental testing - Part 1 : General and guidance HD 603 S1 (1994) Distribution cables of rated voltage 0,6/1 kV HD 626 S1 (1996) +Amendment 1 (1997) Overhead distribution cables of rated voltage Uo/U(Um) : 0,6/1 (1,2) kV EN ISO 9001 (August 1994) Quality systems - Model for quality assurance in design, development, production, installation and servicing EN ISO 9002 (August 1994) Quality systems - Model for quality assurance in production, installation and servicing NF X 06-022 (October 1991) Application of statistics - Selection of sampling plans for control by counting the proportion of non conforming items and average number of non conformities items per unit. (EQV ISO 2859-1) NF X 06-023 (December 1984) Application of statistics - Selection of sampling plans for inspection by measuring the proportion of non conforming units (EQV ISO 3951) NF X 06-032 (May 1973) Statistical processing of data - Determination of a statistical tolerance interval (NEQ ISO 3207)

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1.3

NF C 33-042 –1998

Definitions

Note : Figures are given for general information only. 1.3.1

Anchoring clamps type PA and PAC (IEV 461-18-01)

A device which firmly attaches an aerial insulated cable to a support and is designed to transmit the specified mechanical tension in the cable or messenger to the supporting structure. 1.3.2

Adjustable anchoring clamp type PAR

An anchoring clamp shall satisfy an adjustable length of at least 50 mm with a step smaller or equal to 10 mm. 1.3.3

Anchoring clamp for underground to overhead service PAS 35

The clamp PAS 35 holds directly the sheath of the underground cable. 1.3.4

Fixation of the anchoring clamps

The anchoring clamps shall be fixed to the devices usually used on supports like : BQC : Pigtail bolt on pole ; BQC : Pigtail bolt on facade ; PQC : Pigtail plate on facade ; TQC : Pigtail rod on facade ; CB : Bracket and screw clamp. The main dimensions of the pig tails and of the ring are given below, figures 1 and 2. Figure 2a shows a screw clamp.Dimension in millimetres

Pigtail Figure 1 1.4

Ring Figure 2

screw Figure 2a

clamp.

Main characteristics

Parts in contact with the insulating sheath of the cores shall be made of insulating material in order to ensure the double insulation of the cores. These parts shall not damage the insulating sheath. All components shall be unloosable. In all cases, the installation of the cable in the clamp shall be possible with no tool. The PAD clamp shall not include any conductive part longer than 350 mm when in operating position.

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NF C 33-042 –1998

1.5 1.5.1

Designations Anchoring clamp

The anchoring clamp without hook for overhead services is desginated by PA (anchoring clamp) followed by the service conductor maximum cross-section in square millimetres : 25 (see figure 3).

Figure 3 1.5.2

Adjustable anchoring clamp without a hook

The anchoring clamp without hook for overhead services is designated by PAR (adjustable anchoring clamp) followed by the service conductor maximum cross-section in square millimetres : 25 (see figure 4).

Figure 4 1.5.3

Anchoring clamp with a hook

The anchoring clamp with a hook for overhead services is designated by PAC (anchoring clamp with a hook) followed by the service conductor maximum cross-section in square millimetres : 25 (see figure 5).

Figure 5 1.5.4

Adjustable anchoring clamp with ahook

The adjustable anchoring clamp with a hook for overhead services is designated by PACR (adjustable anchoring clamp with a hook) followed by the service conductor maximum cross-section in square millimetres : 25 (see figure 6).

Figure 6

-71.5.5

NF C 33-042 –1998

Anchoring clamp with a hook for installation with a hot stick

The anchoring clamp with a hook for overhead services is designated by PAD (anchoring clamp for installation with a hot stick) followed by the service conductor maximum cross-section : in square millimetres : 25 (see figure 7).This clamp may be ajustable.

Entry 28 Figure 7 1.5.6

Anchoring clamp for underground cable

The underground cable anchoring clamp for underground to overhead services is designated by PAS (underground cable anchoring clamp) followed by the service conductor maximum cross-section in squarre millimetres : 35. 1.6

Anchoring devices range

1.6.1

Anchoring clamp for overhead services

One single device : PA 25, PAR 25, PAC 25, PACR 25, PAD 25 shall allow anchoring of all service bundled cables. 1.6.2 Anchoring clamp for underground to overhead services One single device PAS shall allow anchoring of all service underground cables in underground to overhead joint. 2

Type tests

2.1

Definition

Tests made before supplying, on a general commercial basis, a type of accessory covered by this standard, in order to demonstrate satisfactory performance characteristics to meet the intended application. These tests are of such a nature that, once successfully completed, they need not be repeated, unless changes are made in the materials or design or manufacturing process which might change the performance characteristics. 2.2

General test conditions

2.2.1

Identification of equipments to be tested

Devices to be tested shall be identified using marking as specified in clause 3. The installation instructions with reference and date shall be provided. 2.2.2

Preparation of cores before tests

New cores shall be used.They shall comply with HD 626-4 E or 6E as applicable.

NF C 33-042 –1998

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Cores shall be conditioned beforehand. The purpose of this treatment is to ensure the dimensional stabilization of the insulating sheath. It consists of keeping the core sections in an enclosure at (120 ± 2)°C for 1 h approximately and letting them cool down to ambient temperature by opening the enclosure door. 2.2.3

Spare

2.2.4

Number of test samples

For each of the specified tests, the number of samples and the test sequences are given in annex A. 2.2.5

Ambient temperature and humidity conditions

Unless otherwise specified, tests shall be carried out at an ambient temperature between 15°C and 35°C in a room whose relative humidity ranges between 25 % and 75 %, in accordance with subclause 5.3 of EN 60068-1. 2.2.6

Frequency and waveform of a.c. test voltages

The frequency of the a.c. test voltages shall be in the range 49 Hz to 61 Hz. The waveform shall be substantially sinusoidal. The values quoted are r.m.s. values. 2.2.7

Cable failure during the tests

If a cable fails beyond any part of anchoring devices, the test result shall be declared void without discrediting the anchoring device. Tests are repeated using a new anchoring device and a new cable. 2.2.8

Set up for climatic ageing test and corrosion test

An anchoring device for overhead services shall be installed at each end of an approximately 0,5 m long overhead bundle with a cross-section of 2 x 16 mm². The system shall allow free rotation of the anchoring devices. A stress of 1 500 N shall be applied to the tested device for 10 min. An anchoring device for underground to overhead services shall be installed at both ends of an approximately 0,5 m long underground cable with a cross-section of 3 x 16 mm² + 16 mm². The system shall allow free rotation of the anchoring devices. A stress of 500 N shall be applied to the tested device for 10 min. 2.2.9

Requirements

The number of samples to be tested is specified for each test. The device is type test approved if the test results are satisfactory for all samples. If not, the device is declared non conforming and consequently not approved. A retest is allowed only if the failure of a sample results from a wrong installation or a cable failure as indicated in sub-clause 2.2.7 2.3

Mechanical tests

For all mechanical tests : - the strength increase shall be carried out smoothly with the tensile machine ; - the rate of the strength increase shall be between 500 N/min and 1 000 N/min. 2.3.1

Procedure

2.3.1.1

Tests on clamps PA 25, PAR 25, PAC 25, PACR 25 and PAD 25

An anchoring device shall be installed at 50 cm from the end of a 2 m long minimum overhead bundle with a 2 x 16 mm² cross-section. It shall be fitted the same way as it is done on the support ; the same test shall be carried out on a 4 x 25 mm² overhead bundle. An appropriate tensile machine shall be installed at the other end.

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NF C 33-042 –1998

An increasing strength Tn is applied to the assembly up to 1 500 N, within ± 5 %. The strength shall be maintained at this value for 10 min then gradually increased to the nominal value T r = 2 000 N for PA, PAR, PAC, PACR and PAD clamps and then released. For PAR, PACR and PAD clamps and depending on the mode of adjustment, the test may be carried out in different positions. 2.3.1.2

Test on PAS 35 clamp

An anchoring device shall be installed at 50 cm from the end of a 2 m long minimum underground cable with a 3 x 16 mm² + 1 x 16 mm² cross-section. It shall be fitted the same way as it is done on the support. An appropriate tensile machine shall be installed at the other end. An increasing strength is applied to the assembly up to T n = 500 N, within ± 5 %. The strength shall be maintained at this value for 10 min then gradually increased to the nominal value, i.e. T r = 700 N. 2.3.2

Requirements

After the strength has been applied at value T n for 1 min, no permanent slippage nor breakdown of any part of the clamp shall be observed. When the strength is increased from Tn to Tr, there shall occur: - no breakdown of any part of the clamp, - no misadjustment of the adjustment system, if any, - no permanent slippage with respect to the clamp, - no slippage of the cores or of the cable with respect to the clamp parts when in contact with. 2.4

Voltage test

The voltage generator shall trip for a leakage current of (10,0 ± 0,5) mA. 2.4.1

Procedure

2.4.1.1

Test on PA 25, PAR 25, PAC 25, PACR 25 and PAD 25 clamps

The test is carried out with conductive rods whose protruding ends are insulated and that are fitted into every places for the cores of the bundle.The length of the rods is such that they protrude by 2 cm at each end of the tightening pieces of the clamp. The diameter of the rods"d" is determined by the average position of the different parts of the clamp, while a 600 N strength is applied to the bundle of the minimum cross-section and then to the bundle of the maximum cross-section. The conductive part of the anchoring clamp, or if no conductive part, its fixation, is earthed. An a.c. voltage of 6 kV is applied between the connected together rods and the conductive part of the clamp, at a rate of approximately 1 kV/s. This voltage is maintened for 1 min. 2.4.1.2

Test on PAS 35 clamp

The test is carried out with a conductive rod fitted in the anchoring clamp. Its length is such that it protrudes by 2 cm at both ends of the tightening pieces. Its diameter "d" is determined by the average position of the different parts of the clamp, while a 300 N strength is applied to the underground insulated cable of the minimum cross-section and then to the underground insulated cable of the maximum cross-section.

NF C 33-042 –1998

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The conductive part of the clamp, or if no conductive part, its fixation, is earthed. An a.c. voltage of 6 kV is applied between the rod and the conductive part of the clamp, at a rate of approximately 1 kV/s. This voltage is maintained for 1 min. 2.4.2

Requirement

No breakdown nor flashover shall occur (tripping of voltage generator). 2.5

Dynamic test at low temperature

2.5.1

Principle

In order to avoid any breakdown while operating under cold weather conditions, the device is submitted to a dynamic test at low temperature. 2.5.2

Tested products

This test is carried out on two types of assemblies : (a) one PA 25 or PAR 25 or PAC 25 or PACR 25 or PAD 25 anchoring clamp fitted on a length of service bundle of 2 x 16 mm² cross-section. (b) one PAS 35 anchoring clamp.fitted on a length of insulated underground service cable of 3 x 16 mm² + 1 x 16 mm² cross-section. In both cases, the cable length is 2 m and the anchoring clamp is fitted at ambient temperature at 50 cm from one end. 2.5.3

Procedure

The clamp is fixed to a device similar to the one used on normal installation. At the opposite insulated end of the bundle or of the cable, an appropriate tensile machine is fitted. The clamp is included in a traction bench having an enclosure kept at (-10

1 )°C. 3

The test arrangement is given in annex D. For type (a) assembly, the clamp is submitted to a gradually applied 700 N strength. This strength is maintained at this value for 1 min. It is then increased within 2 s up to 1 000 N, then released. For type (b) assembly, the clamp is submitted to a gradually applied 250 N strength. This strength is maintained at this value for 1 min. It is then increased within 2 s up to 350 N, then released. 2.5.4

Requirements

Neither breakdown of any part of the clamp nor permanent slippage of the cores or of the cable shall occur. No misadjustement of the adjustable system, if any, shall occur.

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NF C 33-042 –1998

Climatic ageing test Procedure

The samples fitted according to 2.2.8 are submitted to the climatic test according to HD 626-2, sub-clause 2.5.1, with the following details : - 6 weekly cycles are required at the enclosure temperature of (70 ± 2)°C for phases A and C ; - the sample longitudinal opening faces the light source. 2.6.2

Spare

2.6.3

Requirement

At the end of the climatic ageing cycles and after a recovery period of at least 24 h but not exceeding 72 h at the laboratory atmosphere, the assemblies shall be submitted successively to the tests of subclauses 2.6.3.1 and 2.6.3.2. Anchoring clamps for overhead services are fitted to metallic anchoring point. At the beginning of these tests, the assemblies may be re-installed, if sliding or moving have occurred during the climatic ageing test, till the values indicated in 2.2.8. 2.6.3.1 Voltage test The voltage generator shall trip for a leakage current of (10,0 ± 0,5)mA. The end of the bundle or of the cable on which the anchoring clamp is fitted is capped in order to avoid any flashover and the conductive part of the clamp, if any, or the metallic anchoring point is earthed. An increasing a.c. voltage is applied up to 10 kV between the earth and the conductors of the bundle or of the cable. The increase of voltage is applied at a rate of approximately 1 kV/s. This voltage is maintained for 30 min. No breakdownof the cores or of the cable sheath shall occur. 2.6.3.2 Mechanical strength test It is reminded that at the beginning of this test, the assemblies may be re-installed, if sliding or moving has occurred during the climatic ageing test, till the values indicated in 2.2.8. At the end of the voltage test, the mechanical strength test defined in 2.3 allowing the clamp rotation is applied to the tested device. No continuous slippage of the service cores or of the cable in the clamp, nor clamp breakdown, shall occur before : - 1 600 N for PA 25, PAR 25, PAC 25, PACR 25 and PAD 25 clamps - 600 N for PAS 35 clamps. 2.6.4

Common test requirement : visual inspection

The marking allowing identification of the samples shall be legible when examined with normal or corrected vision, without magnification. 2.7

Corrosion test

This test does not apply to full synthetic material devices.

NF C 33-042 –1998

2.7.1

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Procedure

The tested device, fitted according to 2.2.8, is installed horizontally; the longitudinal opening of the anchoring clamp is placed downwards . This assembly is submitted to the corrosion test according to experimental C 33-003 standard. There are 4 cycles of 14 days. 2.7.2

Requirement

At the end of the corrosion cycles and after a recovery period of at least 24 h but not exceeding 72 h at the laboratory atmosphere, the assembly shall be rinsed with demineralized water and then submitted to the tests defined in sub-clauses 2.6.3 and 2.6.4. When the anchoring devices have covered or uncovered steel parts, no trace of rust shall be observed. 2.8

Spare

2.9

Endurance test under mechanical and thermal stresses

This test applies only to PA 25 or PAR 25 or PAC 25 or PACR 25 or PAD 25 clamp for aerial insulated service bundles. This test is carried out with a 2 x 16 mm² cross-section bundle. Room temperature shall be between 15°C and 25°C. 2.9.1

Principle

The test arrangement is given in annex B. The test consists of imposing a strength on the anchoring clamp and on the cores. A heat cycle, obtained by an intermittent a.c. current flowing in the conductors, is combined with the mechanical stresses. The mechanical overload is always applied in cold period. The number of cycles is 500. 2.9.2

Procedure

An anchoring device is fitted at both ends of a service bundle the cross-section of which is 2 x 16 mm². The distance between clamps is at least 5 m and there is at least 1 m coming outside of each anchoring clamp. The duration of the basic cycle is 90 min and it consists of applying mechanical and thermal stresses. Marks are done on the cores at the beginning of the first cycle in order to measure their slippage, if any, with respect to the tightening devices (clavets, linings, wedges, etc...). The conductors are raised up to 25°C by a flowing current, and maintained at (25 ± 3)°C. The mechanical load is then increased up to 1 500 N, within ± 2 % in about 1 min. It is then maintained at this value for 10 min using a manual or automatic continuous control. At the end of the tenth minute, the slippages g 0 and g'0 of the two cores with respect to the parts ensuring their position at both ends are recorded.The assembly is allowed to stabilize mechanically for 24 h while maintaining temperature control at (25 ± 3)°C on the conductors. The temperature is measured underneath the insulation. Throughout this period, values of the residual stress versus time are recorded. After stabilization, the cores are submitted to heating cycles.

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NF C 33-042 –1998

The duration of the heating period is 45 min.The temperature rise is achieved by an a.c. flowing current. The increase temperature speed is chosen to maintain the stabilized state at (70 ± 3)°C for the last 30 minutes of the heating period. For the second period, the conductor is left naturally cooled down to (25 ± 3)°C, and the temperature is then maintained at this value until the end of the cycle. The mechanical stress is increased up to 800 N at the end of the first cycle in case it would be lower than this value. Then, at least once every 24 h, the strength is adjusted to 800 N. At the end of the test, the slippages g 500 and g'500 of the two cores sheaths with respect to the part ensuring their position at both ends are recorded. The test diagram is given in annex C. 2.9.3

Requirements

2.9.3.1

Slippage and adjusting system withstand

The slippages of the cores with respect to the tightening parts shall comply with the following conditions : - g0 + g'0  10 mm - g500 + g'500  10 mm No misadjustment of the adjustment system, if any, shall occur. 2.9.3.2

Voltage test

The service cores are immersed in water with their anchoring clamp. It is permitted to cut the cores at both sides of the clamps before immersion. The resistivity of the water shall be less than 200 .m and its temperature is recorded for information. The voltage generator shall trip for a leakage current of (10,0 ± 0,5) mA. After 30 min under the water, the voltage test is applied to the sample with a 10 kV a.c. voltage for 1 min. The a.c. voltage is applied at a rate of approximately 1 kV/s. No breakdown shall occur (tripping of voltage generator). 3

Marking

3.1

Contents of marking

Each device unit, clamps and brackets, shall permanently bear : - the trade mark or the logo of the manufacturer, the batch reference and the code of the manufacturing plant, - the designation as per this standard and the commercial reference, if any.

NF C 33-042 –1998

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Each conditioning unit shall bear : - the designation as per this standard and the commercial reference, if any, - the trade mark or the logo of the manufacturer and the batch reference, - the number of device units. 3.2

Check for permanent marking

3.2.1

Procedure

The marking shall be rubbed by hand for 15 s with a piece of cloth soaked with water and again for 15 s with a piece of cloth soaked with petroleum spirit. Note : Petroleum spirit is defined as the aliphatic solvent hexane with a content of aromatics of maximum 0,1 % by volume, a kauri-butanol value of 29, initial boiling point of 65°C, a dry point of 69°C and a specific gravity of 0,68 g/cm 3. 3.2.2

Requirement

After the test, the marking shall allow the device identification. 4

Compliance of products with this standard

4.1

General

Any approved product shall comply with the whole set of relevant tests defined in this standard. The manufacturer shall provide the results of the tests specified in annex A. 4.2

Checking compliance of the supply

4.2.1

With a quality assurance system

Within this system, the quality plan specific to the product shall specify the procedure of the tests to be carried out and their frequency. This plan shall be made by the manufacturer and given to the customer as part of the contractual relationships involving the Quality Assurance. The standard model of Quality Assurance to be adopted by the manufacturer is described in EN ISO 9001 or EN ISO 9002. 4.2.2

Without quality assurance system

Compliance of supply is established by presenting the results of the tests listed in annex E. These tests are carried out on randomly sampled elements from each supplied batch according to a procedure agreed by the manufacturer and the purchaser.

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NF C 33-042 –1998

ANNEX A (Normative) Number of samples to be tested 2.3 2.4 2.5 2.6 2.6.3.1 2.6.3.2 2.6.4 2.7 2.6.3.1 2.6.3.2 2.6.4 2.9 2.9.3.1 2.9.3.2

Essais Mechanical tests Voltage test Dynamic test at low temperature Climatic ageing test Voltage test Mechanical strength test Visual inspection Corrosion test Voltage test Mechanical strength test Visual inspection Endurance test under mechanical thermal stresses Slippage control Voltage test Total number of samples

and

PA 25 A1(4) B1(4) C1(2) D1(2) D2(2) D3(2) D4(2) E1(2) E2(2) E3(2) E4(2) F1(2)

PAR 25 A1(4) B1(4) C1(2) D1(2) D2(2) D3(2) D4(2) E1(2) E2(2) E3(2) E4(2) F1(2)

PAC 25 A1(4) B1(4) C1(2) D1(2) D2(2) D3(2) D4(2) E1(2) E2(2) E3(2) E4(2) F1(2)

PACR 25 A1(4) B1(4) C1(2) D1(2) D2(2) D3(2) D4(2) E1(2) E2(2) E3(2) E4(2) F1(2)

PAD 25 A1(4) B1(4) C1(2) D1(2) D2(2) D3(2) D4(2) E1(2) E2(2) E3(2) E4(2) F1(2)

PAS 35 A1(4) B1(4) C1(2) D1(2) D2(2) D3(2) D4(2) E1(2) E2(2) E3(2) E4(2) F1(2)

F2(2) F3(2) 16

F2(2) F3(2) 16

F2(2) F3(2) 16

F2(2) F3(2) 16

F2(2) F3(2) 16

F2(2) F3(2) 16

Ai(n), Bi(n), Ci(n) ... Every Yi(n) designates a production batch Y of a given reference in which a sampling of n samples has been carried out.Tests are carried out in the sequential order i on these samples.

NF C 33-042 –1998

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ANNEX B (Normative) Endurance test under mechanical and thermal stresses for anchoring clamps Illustrative set-up of the testing equipment

Tested anchoring device

Mechanical load measurement equipment

2 x 16 mm² bundled conductors

L = 5 m to 10 m

Tested anchoring clamp Mechanical junction allowing rotation Adjusting mechanical tightener Current source connection

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NF C 33-042 –1998

ANNEX C (Normative) Endurance test under mechanical and thermal stresses for anchoring clamps Diagram of heat cycles and mechanical stresses applied to service cores and anchoring devices

Temperature in °C : Selected value of temperature

Mechanical load in N

: Selected value of mechanical load

1500N-

70°C-

800N-

25°C-

0

0 1

Time in min 10

24h

45

45 Basic cycle 90 min

45

45

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NF C 33-042 –1998

ANNEX D (Normative) Illustrative set-up of the fitting for mechanical test at low temperature

Bundled cores

Mechanical load measurement equipment Cold enclosure Jack

Anchoring clamp tested Mechanical junction allowing rotation Adjusting mechanical tightener

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NF C 33-042 –1998

ANNEX E (Normative) Tests for checking the compliance of the supply

E.1

List of tests Table E.1 - Summary table of routine tests

Designation of tests Checks : - visual - dimensional - materials Voltage tests Mechanical tests E.2

Tested device

Every type of supply

Visual and dimensional checks and check of material identification

The following checks are carried out by comparing devices to approved devices : - marking - dimensions - materials - construction of assemblies E.3

Voltage test on anchoring clamps

To be carried out as per the procedure of sub-clause 2.4. E.4

Mechanical tests

To be carried out as per the procedure of sub-clause 2.3. E.5

Interpretation of results

Results shall be analyzed as per indications of NF X 06-022, NF X 06-023 and NF X 06-032 statistical sampling .

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NF C 33-042 –1998

ANNEX F (Informative) Bibliography

HD 603 S1 (1994) + Amendment 1 (1997) Distribution cables of rated voltage 0,6/1 kV The French standard NF C 33-210 consists of part 5F of this document.

HD 626 S1 (1996) + Amendment 1 (1997) Overhead distribution cables of rated voltage Uo/U(Um) : 0,6/1 (1,2) kV The French standard NF C 33-209 consists of parts 4E and 6E of this document. The French standard NF C 20-540 consists of part 2 sub-clause 2.5.1 of this document