1、BRITISH STANDARD Power transformer and react or fittings Part 4: Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly) The European Standard EN 502164:2002 has the status ofa British Standard ICs 29.180 BS EN 502 1642002 Wk present to the responsible Eu
2、ropean 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 UK. - A list of organizations represented on this committee can be obtained on request to its secretar
3、y. Cr oss-r e fer enc e s 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”, or by using the “Find” facility of the BSI Standa
4、rds 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 immunity from legal obligations. Summary of page
5、s 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. O BSI 12 April 2002 ISBN O 580 39501 4 EUROPEAN STANDARD EN 50216-4 NORME EUROPENNE EUROPIS
6、CHE NORM January 2002 ICs 29.180 English version Power transformer and reactor fittings Part 4: Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly) Accessoires pour transformateurs de puissance et bobines dinductance Partie 4: Accessoires de base (bor
7、ne de terre, orifice de remplissage, vanne de vidange, doigt de gant, galets de roulement) Zubehr fr Transformatoren und Drosselspulen Teil 4: Kleine Zubehrteile (Erd u ngsanschl ussstck, Ablass- und FU I lei nrichtu ngen, Thermometertasche, Rol ien) This European Standard was approved by CENELEC on
8、 2001-07-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations 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
9、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 translation under the responsibility of a CENELEC member into its own language and notified to t
10、he 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, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden,
11、Switzerland and United Kingdom. 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 O 2002 CENELEC - All rights of exploitation in a
12、ny form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50216-4:2002 E EN 5021 6-412002 -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 CENEL
13、EC as EN 5021 6-4 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 - latest date by which the national standards conflicting with the EN have to be withdrawn (dop)
14、2002-08-01 (dow) 2004-08-01 EN 50216-4 is to be read in conjunction with EN 50216-1 -3- Contents EN 5021 6-412002 Page Scope . 4 Normative references 4 Defi ni ti ons 4 Thermometer pockets to be used for liquid immersed transformers 4 4.1 General 4 4.2 Dimensions of thermometer pockets 5 Earth termi
15、nals to be used for liquid immersed and dry-type transformers . 5 5.1 General 5 5.2 Dimensions of different earth terminals . 6 Draining plug to be used for liquid immersed distribution transformers 6 6.1 General 6 6.2 Dimensions of different devices . 7 Filling openings to be used for liquid immers
16、ed distribution transformers 8 7.1 General 8 7.2 Dimensions . 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 . 9 1 2 3 4 5 6 7 8 EN 5021 6-412002 -4- 1 Scope EN 5021 6-4 specifies basic acce
17、ssories 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 for liquid imme
18、rsed distribution transformers, - wheel assembly, choice and distance between centres, to be used for liquid immersed and d ry-type distribution transformers. 2 Normative references Addition to EN 50216-1: EN 60076 Series HD 428 Series HD 464 SI+ 1988 amendments HD 538 Series Power transformers (IEC
19、 60076 Series, mod.) Three-phase oil-immersed distribution transformers 50 Hz, from 50 to 2 500 kVA with highest voltage for equipment not exceeding 36 kV D ry-ty pe transform ers Three-phase dry-type distribution transformers 50 Hz, from 1 O0 to 2 500 kVA, with highest voltage for equipment not exc
20、eeding 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 terminal
21、 placed on the dry-type transformerh-eactor structure or on the transformerh-eactor tanklenclosure, 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 facility for f
22、illing 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- EN 5021
23、 6-412002 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 or oth
24、er suitable medium to ensure transfer of heat. 4.2 The bolt is not specified by this standard. Dimensions of thermometer pockets (dimensions in mm) m P E, c1 _i O m TANK COVOR =, c1 TANK COVOR E c c Figure 1 -Type AI R=l“ Figure 2 - Type A2 R=3/4“ G 5 Earth terminals to be used for liquid immersed a
25、nd dry-type transformers 5.1 General Clause 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 53
26、8 series. The terminal shall ensure continuous 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 5021 6-412002 -6- 5.2 D
27、imensions of different earth terminals =30 t1 d=13-0 I Il +5 35-0 Dimensions in mm Figure 3 - Earth terminals type BI (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 50
28、0 kVA, complying with the EN 60076 and HD 428 series. To obtain a sample 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 OC, at 0,5 x IO5 Pa. The transformer shall be in accordance with the EN 60076 and HD 428 ser
29、ies. Two types are available according to the practice of different countries. -7- EN 5021 6-412002 6.2 Dimensions of different devices Draining I Figure 4 - Draining plug type CI (bolted type) Figure 5 - Detail of Figure 4 46 on flat - d.36.17 “O seal Figure 6 -Detail of Figure 4 EN 5021 6-412002 D
30、n 22 31 -8- Rated power a b d3 d4 d6 5 1 O00 67 6 M24x 1,5 30 46 1 O00 93 10 M33x1,5 40 65 kVA d6 b r I Dimensions in mm I D, is the nominal diameter. I 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
31、 distribution transformers 7.1 General Clause 7 specifies the dimension of the filling holes of liquid immersed transformers, 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 indicato
32、r or a protection device. 7.2 Dimensions The diameter of the hole in the cover shall be 60 mm f 1 mm By agreement between purchaser and manufacturer, other arrangements are admitted, such as filling pipes with preferred inside diameter of 51 mm (2”). -9- Th i c kness mm EN 5021 6-412002 Maximum load
33、 capacity per wheel t 8 Wheel assembly, choice and distance between centres to be used for liquid immersed and dry-type transformers 125 160 200 8.1 General Clause 8 specifies the wheel assembly for liquid immersed transformers with rated power from 50 kVA to 2 500 kVA complying with the EN 60076 an
34、d 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 directions, but the wheel assembly shall be fixed in the selected direction. 40 or 50 235 50 3,6 70 63 8.2 Requirements 1 250 P
35、 5 1 600 1 600 P 5 3 150 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 820 820 or 1 070 Di ameter mm 8.2.2 Distances between wheel centres The distance between the wheel centres shall be in accordance wit
36、h Table 2. Table 2 - Distances between wheel centres Rated power P kVA Distance between wheel centres mm I P 5 250 I 520 I I 250 P 5 1 250 I 670 I I I Figure 8 - Distances between wheel centres BS EN 502 1642002 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national body responsib
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