1、,. GENF1 F= i . Rue dr Staseart. 35 - i0S0 Bruxelleo Tbl.: (+ 32 2) 519.68.71 - FM: (+ 32 2) 519.69.19 Teletex 206 2210097 - CENCEL - TX 172210097 Polyvinyl chloride insulated cables of rated voltages up to and including 4501750V Part 7: Single core non-sheathed cables for internal wiring for a cond
2、uctor temperature of 9OC INFORMATION SHEET HO 21.7 SlIA1 Issue 1 1992-04-03 April 1992 . Conducteurs et cbles isols au polychlorure de vinyle, de tension assignee au plus gale 4501750 V Septime partie: Conducteurs pour une temprature de lme de 9OC, pour filerie interne Polyvinylchlorid-isolierte Lei
3、tungen mit Nennspannungen bis 450J750 V. Teil 7: Einadrige Leitungen ohne Mantel fr die innere Verdrahtung mit einer hchstzulassigen Betriebstemperatur am Leiter von 9oc Related to Directive: 73123lEEC This amendment consists of the following: - Title Page - Text prepared by CENELEC technical commit
4、tee TC 20 date of ratification : 1992-03-24 date of announcement : 1993-01-01 date of withdrawal : 1993-07-01 date of latest publication : 1993-07-01 LIST OF NATIONAL STANDARDS IS GIVEN OVERLBAF HARMONIZED NATIONAL STANDARDS MI 34614583 0037020 L HO 21.7 S1:1990/A1:1992 AT : BE : CH : DE : OK : ES :
5、 FI : FR : GB : GR : IE : IS : IT : LU : Ni. : NO : PT : SE : NOS No standard SP Standard in preparation NR Standard under revision HARMONIZATION DOCUMENT DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT E 3484583 0037023 3 HD 21.7 Sl/Al April 1992 UDC 621.315.3:621.315.616:621.3.027.267.5 Descriptor
6、s: Insulated cable, polyvinyle chloride ENGLISH VERSION POLYVINYL CHLORIDE INSULATED CABLES OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V - PART 7: SINGLE CORE NON-SHEATHED CABLES FOR INTERNAL WIRING FOR A CONDUCTOR TEMPERATURE OF 9OC Conducteurs et cbles isoles Polyvinylchlorid-isolierte au polyc
7、hlorure de vinyle, de Leitungen mit Nennspannungen bis tension assigne au plus gale 4501750 V - Teil 7: Einadrige 4501750 V - Septime partie: Leitungen ohne Mantel fr die Conducteurs pour une temperature innere Verdrahtung mit einer de lme de 9OC, pour filerie hchstzulassigen interne Betriebstempera
8、tur am Leiter von 9oc This amendment modifies the Harmonization Document HO 21.7 S1:1990. It was approved by CENELEC on 1992-03-24. 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
9、-to-date lists and bibliographical references concerning national implementation may be obtained on application to the Central Secretariat or to any CENELEC member. This amendment exists ln three official versions (English, French and German). CENELEC members are the national electrotechnical commit
10、tees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comi t 6 E u rope en d e Nor ma 1 i s.a ti on Electr
11、o t e c h n iq u e Europaisches Komitee fr Elektrotechnische Normun2 Central Secretariat: rue de Stassart 35, 8-1050 Brussels 01992 Copyright reserved to CENELEC members - HD 21.7 S1:1990/A1:1992 E E 3404583 0037022 5 Page 2 HD 21.7 S1:1990/A1:1992 FOREWORD Following a decision taken by CENELEC Tech
12、nical Committee TC 20 at their meeting in Vienna in November 1990, a draft for an amendment to - HD 21.7 S1:1990 was submitted to the CENELEC Unique Acceptance Procedure (UAP) in July 1991. The text of the draft was approved by CENELEC as amendment Al to HD 21.7 S1:1990 on 24 March 1992. The followi
13、ng dates were fixed: - latest date of announcement of the amendment at national level (doa) 1993 -01-01 - latest date of publication of an identical national standard (dop) 1993-07-01 - latest date of withdrawal of conflicting national standards (dow) 1993-07-01 For products which have complied with
14、 HD 21.7 S1:1990 before 1993-07-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 1994-07-01. Amendment Al to HD 21.7 Claus. 1 scope In Line 2, delete of rated voltages Uo/U 300/600V Table 1 Delete 1.6 and 2.6mm2 types for
15、both H06V2-U and H06V2-K Table 2 Renumber reference 1.4 as 1.6, and introduce new line as follows: 1.4 Long term resistance of insulation to d.c. T 21.2 2.6 Clause 3 Add new Clause 3 = 3q04583 0037023 7 3. Page 3 HD 21.7 S1:1990/A1:1992 SINGLE CORE NON-SHEATHED CABLES FOR INTERNAL WIRING FOR A CONDU
16、CTOR TEMPERATURE OF 90C 3.1 CODE DESIGNATION H07V2-U with solid conductor H07V2-K with flexible conductor 3.2 RATED VOLTAGE 460l760V 3.3 CONSTRUCTION 3.3.1 CONDUCTOR Number of conductors: 1 The conductor shall comply with the requirements given in HD 383: Class 1 for solid conductors Class 6 for fle
17、xible conductors 3.3.2 INSULATION The insulation shall be polyvinyl chloride compound of the type TI 3, applied around each conductor. The insulation thickness shall comply with the specified value given in Part 7, Table 111, column 3. The insulation resistance at 9O0C shall not be less than the vel
18、ues given in Part 7, Table 111, column 6. 3.3.3 OVERALL DIAMETER The mean overall diameter shall not exceed the upper limit given in Part 7, Table 111, column 4. 3.4 TESTS Compliance with the requirements of Part 7, Clause 3.3 shall be checked by inspection and by the tests given in Part 7, Table IV
19、. 3.6 INDICATION OF ORIGIN AND TEMPERATURE MARKING In addition to the general requirement of Part 1, Clause 3 a continuous marking indicating temperature shall be applied using symbol V2 (indicating the maximum admissible conductor temperature) by printing, indenting or embossing on the insulation.
20、3.6 GUIDE TO USE See Appendix 1 to Part 1 of this HD. 3404583 0037024 9 Page 4 HD 21.7 S1:1990/A1:1992 TABLE 111 General Data for Types H07V2-U and H07V2-K Type of cable H07V2-K 2 Nominal cross- sectional areas of conductor mm2 1.6 2.6 1.6 2.6 3 Insulation thickness specified value mm O. 7 0.8 0.7 O
21、. 8 4 Mean overall diameter upper limit mm 3.3 3.9 3.6 4.2 6 Minimum insulation resistance at 90C Mohm. km 0.01 1 0.010 0.01 o 0.009 Page 5 HD 21.7 S1:1990/A1:1992 4 1 Ref. No. 1. 1.1 1.2 1.3 1.4 1.6 2. 2.1 2.2 2.3 3. 3.1 3.2 3.3 4. 6. 6.1 6. 7. 8. 6 TABLE IV TESTS FOR TYPE H07V2-U, AND TYPE H07V2-K
22、 Tests ELECTRICAL TESTS Resistance of conductor Voltage test on completed cable at 2600V Insulation resistance at 90C Long term resistance of insulation to d.c. Check absence of faults on insulation PROVISIONS COVERING CONSTRUCTION & DIMENSIONAL CHARACTERISTICS Checking of compliance with constructi
23、onal provisions Measurement of thickness of insulation Measurement of overall diameter MECHANICAL PROPERTIES OF INSULATION Tensile test before ageing Tensile test after ageing Loss of mass test PRESSURE TEST AT HIGH TEMPERATURE TESTS AT LOW TEMPERATURE Bending test on insulation HEAT SHOCK TEST THER
24、MAL STABILITY AT 2OOOC TEST UNDER FIRE CONDITIONS 3 Category T, S T, S T T R T, S T, S T, S T T T T T T T T desi HD 21.2 21.2 21.2 21.2 21.2 21.1 21.2 21.2 606.1.1 606.1.1 606.3.2 606.3.1 606.1.4 606.3.1 606.3.2 406.1 bed in Clause 2.1 2.2 2.4 2.6 2.6 Inspection and manual tests 1.9 1.1 1 9.1 8.1 8.1 8.1 8.1 9.1 9
