1、CENELEC COVER SHEET ISSUE: First - 1980-07-11 EUROPEAN C0.MMITTEE FOR ELECTROTECHNICAL STANDARDIZATION CENELEC HARMONIZATION DOCUMENT HD 398.4 ? POWER TRANSFORMERS Part 4: .Tappings.ani connections (IEC 76-4, m0difie.d) This Harmonization Document was adoptedby CENELEC on 1979-11-20. The National El
2、ectrotechnical Committees, members of CENELEC, in A B CH 1) DK E. F I IRL . _. L . N NL P 6 . SF UK : Austria : Belgium : Switzerland : Germany : Denmark : Spain .: France : Italy : Ireland . : Luxemburg : Norway . : Netherlands : : Portugal : Sweden - . : Finland .: United Kingdom c Reference of th
3、e relevant National Harmonized Standards overleaf are obliged, in accordance With the CENELEC Internal Regulatione, to implement this Harmonization Document in their respective I country by . ., . .- . - . - Issuing harmonized national NEN 3184 (1970) P : NOS S SEN 27 O1 O1 (1968) SF : NOS NOS SP St
4、andard in preparation NR Standard under revision A dev National deviation due to regulations B dev National deviation due to particular technical requirements No national tandard corresponding to the Harmonization Document . for a transitional period H AR MO NI 2 AT I ON DOC U JE ET DOCUNENT D HARMO
5、NISATION - I u) HD 398.4 NOVEMBER 1379 J HARMONISIERUNGSDOKUMNT Date of approval: 1979-11-20 u) *+I f - Tu O O UDC : 621.314.214.3 : 621.3.062 : 001.4 : 003.62 m Key words Power transformers - tappings - winding connections eo u) f O f m English Version POWER TRANSFORNZRS Part 4: Tappings and connec
6、tions TRANSFORMATEURS DE PUISSANCE Quatrime partie: Prises et connexions TRANSFOR MATORE N Teil 4: Anzapfungen und Schaltungen This document was pre.pared by CENELEC TC 14 and the final draft bore the reference CENELEC/TC 14(SEC)15, . May 1979. C.E NE LE C EUROPEAN COMMITTEE FOR ELECTROTECHNICAL STA
7、NDAEDIZATIOK COI.IITE EUROPEEN DE NORMALISATION ELECTROTECHNIQUE EUROPISCHES KOMITEE, FR .ELEKTROTECHNTSCHE NOHIIUNG GENERAL SECRETARIAT : 2, Rue Brderode, Bolte no5 1 O00 BRUSSELS Copyright reserved to national member rgapizations For ewo r d - W 3404583 0024357 7 W -2- HD 398.4 This Harmonization
8、Document was prepared by CENELEC TC 14, following the decisions taken at a meeting in Frankfurt on 15-16 February 1979 on the results of a CENELEC questionnaire 03 IEC Publication 76-4. The complete text of this IEC standard is endorsed as HD398.4with the exception of the agreed CENELEC modification
9、 to clause 7 “Phase displacement between windings“. The date of implementation for all members of CENELEC is 1981-01-01. Note : No National deviation has been requested. . -3- HD 398.4 CLAUSE 7 HD 398.4 POWER TRAlYSFORNERS PART 4 : TAPPINGS ARD CO“ECTIC!NS The full text of IEC Publication 76-4 (1976
10、) shall apply, except for the following clause, where CENELEC common modifications have been agreed. ANE N Dhl E N T Modify as follows the end of the note after the third paragraph : Note : Appendix B gives details of a numb& of connections that are in general use in different countries (instead of
11、“but it does not purport to be comp 1 e te“) - .I REASON Figure 5a of Appendix B considers 26 connection sym- bols corresponding to 10 clock-hour figures. In several CENELEC countries the number of connection symbols really used is much lower (for instance 12 connec- tion symbols corresponding to4 clock-hour figures). .I
