1、BRITISH STANDARD Power transformer and react or fittings Part 1 : General The European Standard EN 50216-1:2002 has the status ofa British Standard ICs 29.180 BS EN 502 16-1 12002 Wk present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep
2、the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. Cr oss-r e fer enc e s The British Standards which implement international or Europea
3、n publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessa
4、ry provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages
5、 2 to 7 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 12 April 2002 ISBN O 580 39498 O EUROPEAN STANDARD EN 50216-1 NORME EUROPENNE EUROPISCHE NORM January 2002 ICs 29.180 English version Power transformer and reactor fittings
6、Part 1 : General Accessoires pour transformateurs de puissance et bobines dinductance Partie 1 : Gnralits Zubehr fr Transformatoren und Drosselspulen Teil 1 : Allgemeines This European Standard was approved by CENELEC on 2001-07-01. CENELEC members are bound to comply with the CENKENELEC Internal Re
7、gulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.
8、This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC mem
9、bers are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical
10、Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35. B - 1050 Brussels O 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 502
11、16-1:2002 E EN 5021 6-1 :2002 -2- Foreword This European Standard was prepared by the Technical Committee CENELEC TC 14, Power transformers . The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 5021 6-1 on 2001 -07-01. The following dates were fixed: - latest dat
12、e by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement - latest date by which the national standards conflicting with the EN have to be withdrawn (dop) 2002-08-01 (dow) 2004-08-01 -3- EN 5021 6-1 :2002 Contents Introduction 4 1 Sc
13、ope . 4 2 Normative references 4 3 Service conditions 5 3.1 Environmental conditions 5 3.2 Degree of protection 5 3.3 Corrosion . 5 3.4 Insulating liquid characteristics 6 4 Dielectric strength of contacts (according to EN 60255-5) 6 5 Seismic withstand . 6 6 Tests . 6 6.1 Routine test . 6 6.2 Type
14、test 7 EN 5021 6-1 :2002 -4- Introduction EN 50216 is divided into several parts, the first covering general features while the remaining parts cover different accessories. This EN will consist of the following parts, under the general title “Power transformer and reactor fittings”: Part 1 : General
15、 Part 2: Gas and oil actuated relay for liquid immersed transformers and reactors with Part 3: Protective relay for hermetically sealed liquid-immersed transformers and reactors Part 4: Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, Part 5: Liquid level, pressur
16、e devices and flow indicators Part 6: Cooling equipment - Removable radiators for oil-immersed transformers Part 7: Electric pumps for transformer oil co nse rva to r without gaseous cushion wheel assembly) 1 Scope This European Standard covers the general conditions concerning accessories for oil i
17、mmersed and dry-type transformers and reactors. Part 1 describes in particular - general conditions of service, - electrical characteristics of contacts, - dynamic characteristics, - mechan ical construction . They are used for stationary, non-weather protected locations. 2 Normative references This
18、 European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these public
19、ations apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies (including amendments). EN 60068-3-3 1993 Environmental testing - Part 3: Guidance - Seismic test methods for equipments (IE
20、C 60068-3-3:1991) EN 60076-1 1997 Power transformers - Part 1 : General (IEC 60076-1 :I 993, mod.) EN 60255-5 2001 Electrical relays - Part 5: Insulation coordination for measuring relays and protection equipment - Requirements and tests (I EC 60255-5:2000) -5- EN 5021 6-1 :2002 K EN 60529 + corr. M
21、ay 1993 (IEC 60529: 1989) 1991 Degrees of protection provided by enclosures (IP Code) CI i matic cond i tions 142“ EN 60721 -3-4 1995 Classification of environmental conditions - Part 3: Classification of groups of environmental parameters and their severities - Section 4: Stationary use at non-weat
22、her protected locations (IEC 60721-3-4:1995) B C IEC 60296 1982 Specification for unused mineral insulating oils for transformers and switchgear B iolog ical cond i tions 4B1 Chemically active substances 4C2 3 Service conditions S M 3.1 Environmental conditions Mechanically active substances 4s3 Mec
23、hanical conditions 4M4 The severities of the environmental conditions are as classified in EN 60721 -3-4. The classes which are appropriate for the accessories are as defined in Table I. By agreement between manufacturer and purchaser, other classes may be given in the relevant accessory specificati
24、on. Table 1 - Environmental classes IZ I Special climatic conditions 1422+424+427 I Except the minimum ambient temperature which is -25 “C. I: Accessories may be fitted with elastic suspension to meet this requirement. 3.2 Degree of protection The degree of protection of the connecting box for outdo
25、or installation shall be at least IP 44 (or IP 54 if requested) according to EN 60529. 3.3 Corrosion The materials used for the construction of the transformer accessories or the surface treatment shall be oil resistant and suitable to withstand the environmental conditions given in 3.1. EN 5021 6-1
26、 :2002 I Between circuits and earth -6- Short duration Lightning impulse power frequency withstand voltage kV (r.m.s.) kV (peak) 2 4 withstand voltage 1 min 3.4 Insulating liquid characteristics This subclause concerns only the accessories which are in contact with the insulating liquid. If the insu
27、lating liquid and its maximum temperature are not specified, mineral oil according to IEC 60296 class I or class II shall be considered as the insulating liquid, with a maximum temperature of 11 5 “C. The accessories shall operate with the kinematic viscosity of the insulating liquid equal to or bel
28、ow 1 100 mm2/s. 4 Dielectric strength of contacts (according to EN 60255-5) The minimum dielectric withstand strength is given in Table 2 Table 2 - Dielectric strength of contacts I Between contacts in open position I 1 I 3 By agreement between manufacturer and purchaser, other values may be given i
29、n the relevant accessory specification. 5 Seismic withstand When the accessory is specified with a seismic withstand without specified acceleration values, the performance level shall be chosen in accordance with EN 60068-3-3 as follows: - classification O (4.3); - level II (7.1). 6 Tests The defini
30、tions concerning testing are given in E, be compatible with that used in the transformer (see 3.4). 076-1. The liquid used for the tests shall 6.1 Routine test The rated short duration power frequency withstand test shall be carried out according to Table 2. -7- EN 5021 6-1 :2002 6.2 Type test Where
31、 type tests are required, the manufacturer and the purchaser shall specify which of the following tests shall be performed: - checking of the switching capacity of contacts. Values shall be given in the relevant accessory specification; impulse withstand test of electrical circuits according to Tabl
32、e 2 (wave shape ,2/50 ps); verification of no malfunctioning of contacts (opening or closing) under mechanical shock waves, 0 seismic conditions. - - The tests shall be carried out for longitudinal and vertical directions separately. BS EN 502 16-1 12002 BSI 389 Chiswick High Road Lon don w4 4AL BSI
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