HD-21.2-S2-A3-1993.pdf
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1、? CENELEC Mue do Stassart. 35 - B los0 BruxefleS T6L: (+ 32 2) 519.68.71 - Fax: (+ 32 2) 519.69.19 Teletex 206 2210097 - CENCEL - T x 172210097 INFORMATION SHEET Issue 1 1993-02-03 HD 2 1 . 2 S 2 l A 3 February 1993 Polyvinyl chloride insulated cables of rated voltages up to and including 4501750 V
2、Part 2 : Test methods Conducteurs et cibles isols au polychlorure de vinyle, de tension mit Nennopannungen bis 4501750 V assignee au plus egale a 4501750 V Tail 2 : Prfverfahren Deuxime partie: Mthodes d?essais Polyvinylchlorid-isolierte Leitungen Related to Directive: 73123lEEC This amendment consi
3、sts o f the following: - Title Page - Common modifications prepared by CENELEC Technical Committee TC 20 date o f ratification : 1992-12-09 date of announcement : 1993-03-01 date of withdrawal : 1993-09-01 date of latest publication : 1993-09-01 ._ ? _ I ? LIST OF NATIONAL STANDARDS IS GIVEN OVERLEA
4、F HARMONIZED NATIONAL STANDARDS 3904583 0058633 558 m HD 2 1 . 2 S 2 : 1 9 9 0 / A 3 : 1 9 9 2 AT : BE : CH : DE : OK : ES : F I : FR GO GR I : IS : I T : LU : NL : NO PT SE b NOS No standard SP Standard i n preparation NR Standard under revision -,-,- I l I HARHONIZATION DOCUMENT DOCUMENT DHARWONIS
5、ATION W 3404583 0058bL4 494 W HD 21.2 S2lA3 HARHONISIERUNGSDOKUHENT February 1993 UDC 6 2 1 . 3 1 5 . 2 1 1 . 2 + 6 2 1 . 3 1 5 . 3 2 . 0 2 7 . 4 7 5 - 0 3 6 . 7 4 3 . 2 2 - 0 0 1 . 2 . 0 0 1 . 4 Descriptors: See HO 21.2 S2:1990 ENGLISH VERSION Polyvinyl chloride insulated cables of rated voltages u
6、p to and including b501150 V Part 2: Test methods Conducteurs et cibles isoles au polychlorure de vinyle, de tension assigne au plus gale i 450/750 v Deuxieme partie: Hethodes dessais Polyvinylchlorid-isolierte Leitungen mit Nennspannungen bis 4501750 V Teil 2: Prfverfahren This amendment A3 modifie
7、s the Harmonization Document HD 21.2 S2:1990. It was approved by CENELEC on 1992-12-09. CENELEC members are bound to comply with the CEN/CENELEC Inernal Regulations which stipulate the conditions for implementation of this amendment on a national level. Up-to-date lists and bibliographical reference
8、s concerning national implementation may be obtained on application to the Central Secretariat or to any CENELEC member. This amendment exists in three official versions (English, French and German). CENELEC members are the national electrotechnical committees of Austria, Belgium. Denmark, Finland,
9、France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europaisches Komitee fr Elektrotechnische Normun
10、g Central Secretariat: rue de Stassart 35, 8-1050 Brussels 0 1 993 Copyright reserved to CENELEC members Ref. No. HO 21.2 S2:1990/A3:1993 E -,-,- m 3404583 D058bL5 320 m Page 2 HD 21.2 S2:1990/A3:1993 b r I L At the request of the CENELEC Technical Committee TC 20, Electric cables, a draft for an am
11、endment to HD 21.2 S2:1990 was submitted to the CENELEC Unique Acceptance Procedure (UAP) in January 1992. The text of the draft was approved by CENELEC as amendment A3 to HD 21.2 S2 on 9 December 1992. The following dates were fixed: - latest date of announcement of the HD at national level (doa) 1
12、993-03-01 - latest date of publication of a harmonized national standard (dopl 1993-09-01 - latest date of withdrawal of conflicting national standards (daw) 1993-09-01 For products which have complied with HD 21.2 S2:1990 and its amendments before 1993-09-01, as shown by the manufacturer or by a ce
13、rtification body, this previous standard may continue to apply for production until 1994-09-01. -,-,- m 3404583 0058bLb 267 m Page 3 HD 21.2 S2:1990/A3:1993 Insert the following new clauses. 3.5 Extension tests for extensible leads 3.5.1 Extension test before ageing. The requirements are given in Pa
14、rt 1 , sub-clause 5.6.3.5 Take a 30 coil length or whole assembly if it contains less than 30 coils in total. Calculate the t o t a l length of the cord in the coiled section as : L = n * ( D - d ) L = Total length of cord n = number of turns D = Outer diameter of coil d = Diameter of cord Suspend t
15、he coil vertically by means of a hook from the f i r s t turn. The sample coiled section s h a l l then be extended t o 60% of length “L“ (as calculated above) five times within 15 2 2 s. The test shall be carried out at a temperature of 20 -+ 5OC, after the sample has been maintained at that temper
16、ature for 24 hours. 3.5.2 Extension test after ageing. The requirements are given in Part 1, sub-clause 5.6.3.5. An oven with natural air flow s h a l l be used, complying with the requirements in Sub-clause 8.1.2 of HD 505.1.2. A 30 coil length or whole assembly if it contains less than 30 coils in
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- HD 21.2 S2 A3 1993
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