HD 22 2 S2 A7-1992 AMD 7 Rubber Insulated Cables of Rated Voltages up to and Including 450 750 V Part 2 Test Methods《修改件7 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、HD 22.2 S2f7 I November 1992 I 1992-11-10 TI.: (+ 32 2) m.e.s.71 - FX: (+ 32 2) 519.69.19 I s sue 1 I RUO de Staesart. 35 - B 1050 Bruxelles Teletex 200 2210097 9 CENCEL - Tx 172210097 Rubber insulated cables of rated voltages up to and including k501750 V Part 2: fest methods Conducteurs et cibles

2、isols au caoutchouc, de tension assignee au einer Isolierung aus Gummi mit plus egale a 4501750 V Nennspannungen bis 4501750 V Deuxime partie: Mthodes dessais Teil 2: Prfverfahren Isolierte Starkstromleitungen mit Related to Directive: 73f23lEEC This amendment consists of the following: - Title Page

3、 - Text prepared by CENELEC Technical Cornittee TC 20 date of ratification : 1992-09-15 date of announcement : 1993-03-01 date of latest publication : 1993-09-01 date of withdrawal : 1993-09-01 LIST OF NATIONAL STANDARDS IS GIVEN OVERLEAF HARMONIZED NATIONAL STANDAROS HO 22.2 52:1992/A7:1992 AT : BE

4、 : CH : DE : OK : ES : SP (UNE 21 027 (19911 FI : FR : Ge : GR : E : IS : IT : LU : NL : NO : PT : SE : NOS No standard SP Standard in preparation NR Standard under revision - - 3404583 0050075 O81 1 t * HARMONIZATION DOCUMENT HD 22.2 S2lA7 Y DOCUMENT DHARMONISATION HARMONISIERUNGSOOKUMENT November

5、1992 UDC 621.315.211.2.027.475.001.4 Descriptors: see HO 22.2 S2:1992 ENGLISH VERSION Rubber insulated cables of rated voltages up to and including 550/750 V Part 2: Test methods Conducteurs et cibles isols Isolierte Starkstromleitungen au caoutchouc, de tension mit einer Isolierung aus Gummi assign

6、ee au plus egale a k50/750 V mit Nennspannungen bis k50/750 V Deuxime partie: Methodes Teil 2: Prfverfahren d essais This amendment modifies the Harmonization Document HO 22.2 S2:1992. It was approved by CENELEC on 1992-09-15. CENELEC members are bound to comply with the CEN/CENELEC Inernal Regulati

7、ons which stipulate the conditions for implementation of this amendment on a national level. Up-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 in three official

8、versions (English, French and German). CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Comm

9、ittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europaisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, 8-1050 Brussels 01992 Copyright reserved to CENELEC members Ref. No. HD 22.2 S2:1992/A7:1992 E FOREWORD Following a de

10、cision taken by CENELEC Technical Committee TC 20 some supplementary common modification to the International Standard IEC 245-2:1980 were submitted to the CENELEC Unique Acceptance Procedure (UAP) in November 1991 for acceptance as an amendment to HD 22.2 S2. The text of the draft was approved by C

11、ENELEC as amendment A7 to HD 22.2 52 on 15 September 1992. The following dates were fixed: - latest date of announcement of the amendment at national level (doa) 1993-03-01 - latest date of publication of a harmonized national standard - latest date of withdrawal of conflicting national standards (d

12、opl 1993-09-01 ( dow ) 19 9 3 -0 9 -0 1 For products which have complied with HD 22.2 S2:1992 and its amendments before 1993-09-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 1994-09-01. - Page 3 HD 22.2 S2 : 1992lA7 : 1

13、992 Add new sub-clause 2.4.1 : 2.4.1 Insulation resistance for cables with maximum conductor temperatures not exceeding 90C This test applies only to cables in Part 9 of this HD. It shall be made on the core samples, 5m long, previously submitted to the test described in sub-clause 2.3 of this Part

14、of HD 22 or, if this is not applicable, to the test described in sub-clause 2.2 of this Part of HD 22. The sample shall be immersed in water previously heated to the specified temperature, a length about 0.25m at each end of the sample being kept above the water. The length of the samples, the tempe

15、rature of the water and the duration of immersion are given in Part 1, Table Ill. A D.C. voltage of between 80V and 500V shall be then applied between the conductor and the water. The insulation resistance shall be measured 1 min after application of the voltage and this value shall be related to 1

16、km. None of the resulting values shall be below the minimum insulation resistance value prescribed in the particular specification (Part 9). The values of the insulation resistance specified in the particular specification (Part 9) are based on a volume resistivity of 1 x 10 0hm.m; they have been ca

17、lculated from the formula: where: R = Insulation resistance, in megohm kilometre D = Nominal outer diameter of the insulation d = Diameter of the circumscribed circle of the conductor. Change existing sub-clause 2.4 to: 2.4.2 Insulation resistance for cables with maximum conductor temperatures exceeding 90C