1、BSI Standards PublicationBS EN 50216-4:2015Power transformer and reactorfittingsPart 4: Basic accessories (earthing terminal,drain and filling devices, thermometerpocket, wheel assembly)BS EN 50216-4:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50216-4:2
2、015. It supersedes BS EN 50216-4:2002, which will be withdrawn on 15 December 2017.The UK participation in its preparation was entrusted to Technical Committee PEL/14, Power transformers.A list of organizations represented on this committee can be obtained on request to its secretary.This publicatio
3、n does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 90927 6 ICS 29.180 Compliance with a British Standard cannot confer immunity from
4、legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2015.Amendments/corrigneda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 50216-4 January 2015 ICS 29.180 Superse
5、des EN 50216-4:2002 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 bobinesdinductance - Partie 4: Accessoires de base (borne de terr
6、e, orifice de remplissage, vanne de vidange, doigt de gant, galets de roulement) Zubehr fr Transformatoren und Drosselspulen - Teil 4:Grundzubehr (Erdungsklemme, Ablass- undFlleinrichtungen, Thermometertasche, Radbaugruppe) This European Standard was approved by CENELEC on 2014-12-15. CENELEC member
7、s 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 anyalteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained on application t
8、o the CEN-CENELEC Management Centre 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 the CEN-CENELEC Man
9、agement Centre has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ir
10、eland, Italy, Latvia,Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation ElectrotechniqueEuropisches Kom
11、itee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50216-4:2015 E BS EN 50216-4:2015Contents Page Foreword 3 1 Scope .4 2 Normative
12、 references .4 3 Terms and definitions .4 4 Thermometer pockets to be used for liquid immersed transformers .5 4.1 General 5 4.2 Dimensions of thermometer pockets .5 5 Earth terminals to be used for liquid immersed and dry-type transformers 6 5.1 General 6 5.2 Dimensions of different earth terminals
13、 .6 6 Draining plug with sampler (preferred solution for distribution transformers).8 6.1 General 8 6.2 Dimensions of different devices .8 7 Filling openings for liquid immersed distribution transformers .9 7.1 General 9 7.2 Dimensions 9 8 Rollers, choice, dimensions and distance 10 8.1 General 10 8
14、.2 Requirements 10 8.2.1 Choice of the roller .10 8.2.2 Distance between centres .12 Bibliography .15 EN 50216-4:2015BS EN 50216-4:2015Foreword This document (EN 50216-4:2015) has been prepared by CLC/TC 14, “Power transformers“. The following dates are fixed: latest date by which this document has
15、to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-12-15 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2017-12-15 This document supersedes EN 50216-4:2002. The main technical change
16、s compared to the first edition are the following: Earth terminal Type B3 added; Figure 7 updated; Clause 8 completely new. EN 50216-4 is to be read in conjunction with EN 50216-1. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. C
17、ENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. EN 50216-4:2015BS EN 50216-4:20151 Scope EN 50216-4 specifies basic accessories of transformers / reactors, such as Thermometer pockets, to be used for liquid immersed transformers, Earth terminals; to be
18、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 immersed distribution transformers, Rollers, choice and distance to be used for liquid immersed and dry-type transformers. After agree
19、ment between purchaser and manufacturer, this part of EN 50216 Series may still be applicable either as a whole or in part to large power transformers or special transformers. 2 Normative references Addition to EN 50216-1: EN 50464 Series Three-phase oil-immersed distribution transformers 50 Hz, fro
20、m 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kV EN 50522 Earthing of power installations exceeding 1 kV a.c. EN 50541 Series Three-phase dry-type distribution transformers 50 Hz, from 100 kVA to 3 150 kVA, with highest voltage for equipment not exceeding 36 kV EN 60076 S
21、eries Power transformers (IEC 60076 Series) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply: 3.1 thermometer pocket a device, generally mounted (may be welded) on the transformer or reactor cover, intended to house a thermometer to measure the ins
22、ulating liquid temperature (marking A) 3.2 earth terminal a terminal placed on the dry-type transformer structure or on the liquid immersed transformer/reactor tank, for connection to an earthing system (marking B) 3.3 draining plug a device intended to sample or remove the insulating liquid from a
23、transformer tank (marking C) EN 50216-4:2015BS EN 50216-4:20153.4 filling openings a facility for filling a transformer tank with insulating liquid 3.5 roller the device equipped with wheels to be fixed at the bottom of the transformer for the positioning on final installation place (marking W) 3.6
24、wheel assembly the set of rollers used for scrolling the transformer on the beam (U) or rail track of the final installation place 4 Thermometer pockets to be used for liquid immersed transformers 4.1 General Clause 4 specifies the thermometer pockets for liquid immersed transformers in order to ens
25、ure the interchangeability of the accessories to this pocket. 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 series and EN 50464-1 for liquid immersed transformer. The opening shall be protected against
26、 the ingress of moisture and foreign bodies. The pocket has to be filled with oil or other suitable medium to ensure transfer of heat. 4.2 Dimensions of thermometer pockets The closure (like a bolt / gasket / cap to avoid get in dust and water) and the method of manufacturing is not specified by thi
27、s standard. EN 50216-4:2015BS EN 50216-4:2015Dimensions in millimetre Figure 1 - Type A1 R=1“ Figure 2 - Type A2 G=3/4“ 5 Earth terminals to be used for liquid immersed and dry-type transformers 5.1 General Clause 5 specifies the shape and dimensions of earth terminals for liquid immersed transforme
28、rs, complying with the EN 60076 series and EN 50464 series for liquid immersed transformers and EN 50541 series for dry-type transformers. The terminal shall ensure continuous electrical continuity and shall be capable of carrying a current calculated to EN 50522. Earth terminals with larger contact
29、 surface for higher fault current or duration of the fault can be designed according to EN 50522. Three types are available with different current rating, according to the practice of different countries. 5.2 Dimensions of different earth terminals Material for all earth terminals should be Stainles
30、s steel or normal steel with tin- or zinc plated at the contact surface to protect against corrosion. EN 50216-4:2015BS EN 50216-4:2015Dimensions in millimetre Type B1 Type B2 Type B3 (length min 40mm / circular welding seam min 4mm in height) Figure 3 Typical earth terminals used for transformers t
31、ype B1, B2 and B3 Table 1 Typical fault current for type B1, B2 and B3 (preferred solution for distribution transformers) Type Material Initial Temp. (C) Final Temp. (C) Cross section (mm2) Duration of the fault current (s) Calculated fault current (RMS value) (kA) B1 steel 40 300 570 1 38 B2 steel
32、40 300 150 1 10 B3 steel 40 300 76 1 5 NOTE Type B3 was successful tested with a fault current of 6kA 1second. EN 50216-4:2015BS EN 50216-4:20156 Draining plug with sampler (preferred solution for distribution transformers) 6.1 General Clause 6 specifies the dimensions and shape of the draining plug
33、 with sampler for liquid immersed transformers in accordance with EN 60076 series and EN 50464-1. 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 mineral oil at 115 C, at 1,2 x 105Pa. If other liquid is us
34、ed with higher temperature limit the manufacturer have to demonstrate the leak-proof. Two types are available according to the practice of different countries. 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 4 EN
35、50216-4:2015BS EN 50216-4:2015Figure 7 Draining plug type C2 Table 2 Typical draining plug type C2 DN Rated power Sr (KVA) a (mm) b (mm) d3 d4 (mm) d6 (mm) d7 (mm) 22 800 67 6 M24 x 1,5 30 46 18,5 31 800 3150 115 10 M42 x 1,5 52 80 33,8 DN is the nominal diameter NOTE For draining, this device can b
36、e used with a special connector. 7 Filling openings for liquid immersed distribution transformers 7.1 General Clause 7 specifies the dimension of the filling holes for liquid immersed transformers, in accordance with EN 60076 series and EN 50464-1. In addition, the filling hole provides for the inst
37、allation of a liquid 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 between purchaser and manufacturer, other arrangements are admitted, such as filling pipes with preferred inside diameter of 51 mm (2). EN 50216-4:2015B
38、S EN 50216-4:20158 Rollers, choice, dimensions and distance 8.1 General Clause 8 specifies the wheel assembly for transformers, in accordance with EN 60076 series, EN 50464-1 for liquid immersed transformers and EN 50541 for dry-type transformers. The transformer shall be suitable for movement in tw
39、o directions, but the wheel assembly shall be fixed in the selected direction. 8.2 Requirements 8.2.1 Choice of the roller The roller is composed by the following parts: a wheel plate in order to fix the roller to the bottom of the transformer; one or two wheels; a trolley in case of a double wheel
40、roller. The rollers shall comply with one of the following types, represented in Figure 8: W1: flat wheel; (preferred solution for distribution transformers); W2: flanged wheel; (preferred solution for medium power transformers); W3: flanged double wheel with trolley; (preferred solution for large p
41、ower transformers). EN 50216-4:2015BS EN 50216-4:2015Type W1 Type W2 Type W3 Figure 8 Types of rollers The dimensions of the rollers shall be in accordance with Table 3. EN 50216-4:2015BS EN 50216-4:2015Table 3Choice of rollers Type Max load per roller (metric ton) Wheel thickness (mm) Flange thickn
42、ess (mm) Wheel diameter (mm) Height (mm) Wheelcentre interaxis (mm) T 2 F 1 D 1 H 2 E 2 W1 2,5 40 or 50 - 125 152 - W1 3,6 50 - 160 195 - W1 6,3 70 - 200 230 - W2 10 115 12 200 240 - W2 25 115 12 200 240 - W2 35 130 15 250 300 - W2 40 145 27,5 380 525 - W2 50 130 15 300 350 - W3 50 115 12 200 285 25
43、0 W3 70 130 15 250 350 310 W3 80 145 27,5 380 525 600 W3 100 130 15 300 420 390 8.2.2 Distance between centres The distance between the rollers may be defined either as the pitch between the wheels middle axis or as the rail gauge, the difference being given by the rail width, see Figure 9. Figure 9
44、 Rollers distance The rollers with flange defined in this standard are suitable for use with the rail type 60E1 according to EN 13674-1, that has a width of 72 mm; in case of use with a different rail the compatibility of the roller shall be verified. The rail track of the substations bay may have a
45、 single track or a double track, see Figure 10 and Figure 11. In a single rail track a wheel assembly composed of four rollers shall be used; in a double rail track a wheel assembly composed of eight rollers shall be used. NOTE 1 In some cases the rollers will be used for the positioning of the tran
46、sformer on the service bay. After positioning of the transformer the rollers will be removed. EN 50216-4:2015BS EN 50216-4:2015NOTE 2 If the customer specify no rollers the transformer will be delivered without rollers and fixing device for rollers. Figure 10 Pitch (roller centres) for single track
47、Figure 11 Pitch (roller centres) for double track EN 50216-4:2015BS EN 50216-4:2015Table 4 Typical distance (pitch) Rated power Sr(kVA) Longitudinal pitch single track (mm) Lateral pitch (mm) Longitudinal pitch double track (mm) L1 C L2 Sr 250 520 2 520 2 - 250 3150 3010 5 1505 2 - 3010 5 b1505 2 15
48、05 2 amedium power transformers with Um 72,5 kV and Sr 10 MVA (other dimensions on request). bin conjunction with double track. EN 50216-4:2015BS EN 50216-4:2015Bibliography 1 EN 13674-1, Railway applications - Track - Rail - Part 1: Vignole railway rails 46 kg/m and above EN 50216-4:2015This page d
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