HD 22 2 S2 A10-1995 Rubber Insulated Cables of Rated Voltages up to and Including 450 750 V Part 2 Test Methods《额定电压450 750 V及以下的橡胶绝缘电缆 第2部分 试验方法》.pdf

1、HARMONIZATION DOCUMENT HD 22.2 S2/A1O DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT June 1995 UDC 621.315.21 1.2.027.475.001.4 ICs 29.060.20 Descriptors: See HD 22.2 C2:1992 English version Rubber insulated cables of rated voltages up to and including 450/750 V Part 2: Test methods Conducteurs et

2、cbles isols au caoutchouc, de tension assigne au plus gale 450/750 V Partie 2: Mthodes dessais Isolierte Starkstromleitungen mit einer Isolierung aus Gummi mit Nennspannungen bis 450/750 V Teil 2: Prfverfahren This amendment A10 modifies the Harmonization Document HD 22.2 S2:1992; it was approved by

3、 CENELEC on 1995-05-1 5. CENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for implementation of this amendment on a national level. Up-to-date lists and bibliographical references concerning such national implementation may be obtained on a

4、pplication to the Central Secretariat or to any CENELEC member. This amendment exists in three official versions (English, French, German). CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg

5、 Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels

6、1995 Copyright reserved to CENELEC members Ref. No. HD 22.2 S2:1992/A10:1995 E Page 2 HD 22.2 S2:1992/A10:1995 Foreword This amendment was prepared by the Technical Committee CENELEC TC 20, Electric cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CE

7、NELEC as amendment A10 to HD 22.2 S2:1992 on 1995-05-1 5. The following dates were fixed: - latest date by which the existence of the amendment has to be announced at national level (doa) 1996-01-01 - latest date by which the amendment has to be implemented at national level by publication of a harm

8、onized national standard or by endorsement (dopl 1996-07-01 - latest date by which the national standards conflicting with the amendment have to be withdrawn (daw) 1996-07-01 i For products which have complied with HD 22.2 S2:1992 and its amendments A5: 1992, A6:1992, A7:1992, A8:1993 and A9:1993 be

9、fore 1996-07-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 1997-07-01. . Page 3 HD 22.2 S2:1992/A10:1995 Insert new sub-clauses 3.4 and 3.5 3.4 Three Dullev flexino test 3.4.1 Test method The test shall be carried out i

10、n accordance with sub-clause 3.1 except for the following modifications to the apparatus described therein. (i) Carrier The apparatus described in sub-clause 3.1.2 shall have a modified carrier C, as shown in Figure 3a. (i) Pullev wheels The three pulley wheels of modified carrier C shall be of equa

11、l diameter to each other in accordance with the table C. Table C Diameter of Dullev wheels Cable type (number and nominal cross sectional area of conductors) 2 x 0.75mm2 2 x lmmz 3 x 0.75mmz 2 x 1 .5mm2 3x1 mm2 3 x 1 .5mm2 Diameter of pulley wheels (mm) 40 40 40 45 45 50 (i) SDeed of carrier The con

12、stant speed of the modified carrier C shall be approximately O. 1 m/s. (iv) Weight The applied weight to stress the conductor as described in sub-clause 3.1.3 of shall be calculated on the basis of 28N/mmz of conductor cross section. 3.4.2 Reauirements During the test with 1000 cycles, ie 2000 singl

13、e movements, neither interruption of the current, short circuit between the conductors nor short circuit between the cable and the pulleys (the flexing apparatus) shall occur. After the required number of cycles the sheath of the cable, if any, shall be removed. The cores shall then withstand the vo

14、ltage test carried out in accordance with sub-clause 2.3, but with a test voltage not exceeding 2,OOOV. CENELEC HD*22=2 S2/ALO 95 m 3V04.583 015449L 476 m Page 4 HD 22.2 S2:1992/A10:1995 I AI Fiaure 3a : Modified carrier “C“ a CENELEC HDx22.2 S2/ALO 95 M 3404583 0154492 302 M Page 5 HD 22.2 S2: 1992

15、/A1 O: 1995 3.5 Kink test 3.5.1 3.5.2 3.5.3 3.5.4 3.5.5 AoDlicability The test is applicable to 2 and 3 core sheathed cords, with conductor cross- sectional areas up to and including 1 .5mm2. ADDaratUS The test shall be carried out by means of a tensile strength testing machine or equivalent apparat

16、us. There shall be two clamps for fixing the cord. The upper clamp shall be capable of upwards and downwards movement. The lower clamp shall allow free movement in the vertical direction, but shall be prevented from twisting about its vertical axis so that no change to the torsion in the cord is int

17、roduced during the test. The arrangement is shown in Figure 3b. SamDle The test cord sample shall have a length of approximately one metre. The cord shall be twisted three times, as shown in Position 1 (starting position only) of Figure 3b, and then fixed in the upper and lower clamps such that the

18、starting distance between the clamps is 200mm. The total extended length of cord between the two clamps is approximately 800mm, as shown in position 2 (extended position) of Figure 3b. Four samples shall be prepared for testing, two with the twists applied in a clockwise direction and two in an anti

19、clockwise direction. Test orocedure The lower clamp shall be loaded with a weight, sufficient to exert the tensile force given in Table D. Each conductor of the cord shall be loaded with a current, as specified in Table E. The current may be at a low voltage. The moveable upper clamp shall make upwa

20、rds and downwards movements at the rate of nine complete cycles per minute (one complete cycle equals one upwards and downwards movement). The distance of travel for each movement (up or down) shall be 650mm. When the upper clamp is fully raised the weight attached to the bottom clamp shall have bee

21、n raised by about 50mm (see Figure 3b, position 2). A total of 3000 cycles shall be made on each sample. Reauirernents During the test neither interruption of the current, nor short circuit between the conductors shall occur. Page 6 HD 22.2 S2:1992/A10:1995 Nominal cross-sectional area of conductor

22、tmm2 0.75 1 .o 1.5 Also there shall be no damage (cracking or tearing) to the sheath or any outer covering (textile braid). Textile braids shall have no gap bigger than 2mm. Test current (amps) 6 10 16 At the conclusion of the test the sheath and any outer covering shall be removed, and the cores sh

23、all be subjected to the voltage test at 2000V in accordance with sub-clause 2.3. TABLE D Tensile force exerted bv the weiaht Tensile force (NI exerted by the weight for cords having: 2 cores 3 cores Nominal cross-sectional area of conductor immz) 0.75 1 .o 1.5 30 50 70 50 70 1 O0 TABLE E Test currenB I Page 7 HD 22.2 S2:1992/A10:1995 I upanddown movements t 3x twisted Il u fixing clamp4 an ti- t orsion guidance /fixing clamp to C - C U - 1 U L O U C position I (starting point) position 2 kWltul Fioure 3b : Kink test aooaratus