1、BRITISH STANDARD BS EN 50216-4:2002 Power transformer and reactor fittings Part 4: Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly) The European Standard EN 50216-4:2002 has the status of a British Standard ICS 29.180 NO COPYING WITHOUT BSI PERMISS
2、ION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 50216-4:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 April 2002 BSI 12 April 2002
3、 ISBN 0 580 39501 4 National foreword This British Standard is the official English language version of EN 50216-4:2002. The UK participation in its preparation was entrusted to Technical Committee PEL/14, Power transformers, which has the responsibility to: A list of organizations represented on th
4、is committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”,
5、or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer
6、 immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the U
7、K. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDA
8、RD EN 50216-4 NORME EUROPENNE EUROPISCHE NORM January 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC - All ri
9、ghts of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50216-4:2002 E ICS 29.180 English version Power transformer and reactor fittings Part 4: Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly) Accessoi
10、res pour transformateurs de puissance et bobines dinductance Partie 4: Accessoires de base (borne de terre, orifice de remplissage, vanne de vidange, doigt de gant, galets de roulement) Zubehr fr Transformatoren und Drosselspulen Teil 4: Kleine Zubehrteile (Erdungsanschlussstck, Ablass- und Flleinri
11、chtungen, Thermometertasche, Rollen) This European Standard was approved by CENELEC on 2001-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
12、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. This European Standard exists in three official versions (English, French, German). A version in any other language made by translati
13、on 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 members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Ice
14、land, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN 50216-4:2002 - 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 vot
15、e and was approved by CENELEC as EN 50216-4 on 2001-07-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2002-08-01 - latest date by which the national standards conflicti
16、ng with the EN have to be withdrawn (dow) 2004-08-01 EN 50216-4 is to be read in conjunction with EN 50216-1. _- 3 - EN 50216-4:2002 Contents Page 1 Scope . 4 2 Normative references 4 3 Definitions 4 4 Thermometer pockets to be used for liquid immersed transformers 4 4.1 General 4 4.2 Dimensions of
17、thermometer pockets 5 5 Earth terminals to be used for liquid immersed and dry-type transformers . 5 5.1 General 5 5.2 Dimensions of different earth terminals . 6 6 Draining plug to be used for liquid immersed distribution transformers 6 6.1 General 6 6.2 Dimensions of different devices. 7 7 Filling
18、 openings to be used for liquid immersed distribution transformers 8 7.1 General 8 7.2 Dimensions . 8 8 Wheel assembly, choice and distance between centres to be used for liquid immersed and dry-type distribution transformers 9 8.1 General 9 8.2 Requirements. 9EN 50216-4:2002 - 4 - 1 Scope EN 50216-
19、4 specifies basic accessories of transformers, such as thermometer pockets, to be used for liquid immersed transformers, earth terminals; to be used for liquid immersed and dry-type transformers, draining plugs, to be used for liquid immersed distribution transformers, filling openings, to be used f
20、or liquid immersed distribution transformers, wheel assembly, choice and distance between centres, to be used for liquid immersed and dry-type distribution transformers. 2 Normative references Addition to EN 50216-1: EN 60076 Series Power transformers (IEC 60076 Series, mod.) HD 428 Series Three-pha
21、se oil-immersed distribution transformers 50 Hz, from 50 to 2 500 kVA with highest voltage for equipment not exceeding 36 kV HD 464 S1+ amendments 1988 Dry-type transformers HD 538 Series Three-phase dry-type distribution transformers 50 Hz, from 100 to 2 500 kVA, with highest voltage for equipment
22、not exceeding 36 kV 3 Definitions For the purpose of this standard, the following definitions apply: 3.1 thermometer pocket a device, generally mounted on the transformer or reactor cover, intended to house a thermometer to measure the insulating liquid temperature (marking A) 3.2 earth terminal a t
23、erminal placed on the dry-type transformer/reactor structure or on the transformer/reactor tank/enclosure, for connection to an earthing system (marking B) 3.3 draining plug a device intended to sample or remove the insulating liquid from a transformer tank (marking C) 3.4 filling openings a facilit
24、y for filling a transformer tank with insulating liquid (marking D) 4 Thermometer pockets to be used for liquid immersed transformers 4.1 General Clause 4 specifies the thermometer pockets for oil immersed transformers in order to ensure the interchangeability of the accessories to this pocket.- 5 -
25、 EN 50216-4:2002 The location and the method of fitting on the cover are not specified by this standard. The transformer shall be in accordance with the EN 60076 and HD 428 series. The opening shall be protected against the ingress of moisture and foreign bodies. The pocket has to be filled with oil
26、 or other suitable medium to ensure transfer of heat. 4.2 Dimensions of thermometer pockets (dimensions in mm) The bolt is not specified by this standard. Figure 1 - Type A1 R=1“ Figure 2 - Type A2 R=3/4“ G 5 Earth terminals to be used for liquid immersed and dry-type transformers 5.1 General Clause
27、 5 specifies the shape and dimensions of earth terminals for liquid immersed transformers, complying with the EN 60076 and HD 428 series and dry-type transformers with rated power up to 10 MVA, complying with HD 464 and, as far as applicable, with the HD 538 series. The terminal shall ensure continu
28、ous electrical conductivity and shall be capable of withstanding 20 kA for 1 s. Two types are available, according to the practice of different countries. The transformer shall be in accordance with the EN 60076 and HD 428 series.EN 50216-4:2002 - 6 - 5.2 Dimensions of different earth terminals Dime
29、nsions in mm Figure 3 Earth terminals type B1 (above) and B2 (below) 6.1 General Clause 6 specifies the dimensions and shape of the draining plug with sampler for liquid immersed transformers with rated power from 50 kVA to 2 500 kVA, complying with the EN 60076 and HD 428 series. To obtain a sample
30、 of liquid, the plug is turned and liquid escapes by the small groove in the boss. These devices shall be leak-proof for hot oil at 115 C, at 0,5 x 10 5Pa. The transformer shall be in accordance with the EN 60076 and HD 428 series. Two types are available according to the practice of different count
31、ries. +5 - 0 25 min.- 7 - EN 50216-4:2002 6.2 Dimensions of different devices Figure 4 Draining plug type C1 (bolted type) Figure 5 Detail of Figure 4 Figure 6 Detail of Figure 4EN 50216-4:2002 - 8 - Dimensions in mm D n Rated power kVA a b d3 d4 d6 22 1 000 67 6 M24 x 1,5 30 46 31 1 000 93 10 M33 x
32、 1,5 40 65 D n is the nominal diameter. NOTE For draining, this device can be used with a special connector. Figure 7 Typical draining plug type C2 7 Filling openings for liquid immersed distribution transformers 7.1 General Clause 7 specifies the dimension of the filling holes of liquid immersed tr
33、ansformers, with rated power from 50 kVA to 2 500 kVA, complying with the EN 60076 and HD 428 series. In addition, the filling hole provides for the installation of an oil level indicator or a protection device. 7.2 Dimensions The diameter of the hole in the cover shall be 60 mm 1 mm. By agreement b
34、etween purchaser and manufacturer, other arrangements are admitted, such as filling pipes with preferred inside diameter of 51 mm (2 ).- 9 - EN 50216-4:2002 8 Wheel assembly, choice and distance between centres to be used for liquid immersed and dry-type transformers 8.1 General Clause 8 specifies t
35、he wheel assembly for liquid immersed transformers with rated power from 50 kVA to 2 500 kVA complying with the EN 60076 and HD 428 series, and for dry-type transformers from 100 kVA to 3 150 kVA, complying with HD 464 and the HD 538 series. The transformer shall be suitable for movement in two dire
36、ctions, but the wheel assembly shall be fixed in the selected direction. 8.2 Requirements 8.2.1 Choice of the wheels The diameter and the thickness of the wheel assembly shall be in accordance with Table 1. Table 1 Choice of wheels Diameter mm Thickness mm Maximum load capacity per wheel t 125 40 or
37、 50 2,5 160 50 3,6 200 70 6,3 8.2.2 Distances between wheel centres The distance between the wheel centres shall be in accordance with Table 2. Table 2 Distances between wheel centres Rated power P kVA Distance between wheel centres mm P 250 520 250 P 1 250 670 1 250 P 1 600 820 1 600 P 3 150 820 or
38、 1 070 Figure 8 Distances between wheel centresBS EN 50216-4:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level
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