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1、BRITISH STANDARD BS EN 50425:2008 Switches for household and similar fixed electrical installations Collateral standard Firemans switches for exterior and interior signs and luminaires ICS 29.120.40 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy
2、Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:03:24 MDTNo reproduction or networking permitted without license from IHS -,-,- BS EN 50425:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008 ISBN 978 0 580
3、 58478 7 National foreword This British Standard is the UK implementation of EN 50425:2008. The UK participation in its preparation was entrusted to Technical Committee PEL/23, Electrical accessories. A list of organizations represented on this committee can be obtained on request to its secretary.
4、This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments Copyright British
5、Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:03:24 MDTNo reproduction or networking permitted without license from IHS -,-,- EUROPEAN STANDARD EN 50425 NORME EUROPENNE EUROPISCHE NORM February 2008 CENELE
6、C European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldw
7、ide for CENELEC members. Ref. No. EN 50425:2008 E ICS 29.120.40 English version Switches for household and similar fixed electrical installations - Collateral standard - Firemans switches for exterior and interior signs and luminaires Interrupteurs pour installations lectriques fixes domestiques et
8、analogues - Norme collatrale - Interrupteurs pompiers pour enseignes lumineuses et luminaires extrieurs et intrieurs Schalter fr Haushalt und hnliche ortsfeste elektrische Installationen - Kollaterale Norm - Feuerwehrschalter fr uere und innere Anzeigen und Leuchten This European Standard was approv
9、ed by CENELEC on 2007-10-01. 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. Up-to-date lists and bibliographical references concerning such nation
10、al 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 translation under the responsibility of a CENELEC member into its own language
11、and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
12、Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08
13、/14/2008 21:03:24 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 50425:2008 2 Foreword This European Standard has been prepared by the Technical Committee CENELEC TC 23BX, D.C. plugs and socket outlets and switches for household and similar fixed electrical installation
14、s. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50425 on 2007-10-01. 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
15、) 2008-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-10-01 This European Standard has to be used in conjunction with EN 60669-1:1999 Switches for household and similar fixed-electrical installations - Part 1: General requirements. It lists
16、the additional changes necessary to convert it into the European Standard Switches for household and similar fixed electrical installations - Collateral standard Firemans switches for exterior and interior signs and luminaries. When this standard states addition, modification or replacement to Part
17、1, the relevant text of EN 60669-1:1999 is to be adapted accordingly. NOTE The subclauses, tables and figures that are numbered starting from 101 are additional to those in EN 60669-1:1999. BS EN 50425:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled
18、 Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:03:24 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 EN 50425:2008 1 Scope This clause of Part 1 applies with the following modifications: Replacement of the first paragraph: This collateral standard appli
19、es to firemans switches used for the breaking of the low voltage circuits for exterior and interior signs and luminaires e.g. neon signs for a.c. only with a rated voltage not exceeding 440 V and a rated current not exceeding 125 A. NOTE 1 The working voltage for the signs and luminous-discharge-tub
20、e installations is higher than 1 kV but lower than 10 kV and these should be in accordance with EN 50107 series. Renumbering of the subsequent notes. Replacement of the 6th paragraph and the new Note 6 by: Firemans switches complying with this standard are suitable for use between 20 C and +70 C. NO
21、TE 6 Firemans switches are designed for overvoltage category III and used in environment of pollution degree 2 according to EN 60664-1. 2 Normative references See Annex ZA. 3 Definitions This clause of Part 1 applies with the following addition: Additional new definition: 3.101 firemans switch switc
22、h for emergency disconnection of lighting installations 4 General requirements This clause of Part 1 applies. 5 General notes on tests This clause of Part 1 applies. 6 Ratings This clause of Part 1 applies with the following modifications: 6.2 Deletion in the first paragraph of the values “6 A“ and
23、“10 A“ Addition of the values “80 A, 100 A and 125 A.” BS EN 50425:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:03:24 MDTNo reproduction or networking permitted without license from
24、 IHS -,-,- EN 50425:2008 4 7 Classification This clause of Part 1 applies except as follows. 7.1.1 Addition at the end: Firemans switches shall be only of pattern number 2, 3 or 03. 7.1.2 This subclause of Part 1 is not applicable. 7.1.4 Replacement: 7.1.4 according to the degree of protection again
25、st harmful effects due to the ingress of water: IPX5: switches protected against water jets; IPX6: switches protected against powerful water jets. NOTE For an explanation of IP codes, see EN 60529. 7.1.5 Replacement: 7.1.5 according to the method of actuating the switch: tumbler. NOTE No other actua
26、ting method is permitted. 7.1.6 Replacement: 7.1.6 according to the method of mounting the switch: surface-type; semi flush-type. NOTE No other method of mounting is permitted. 7.1.9 Replacement: 7.1.9 according to the degree of protection against access to hazardous parts and against harmful effect
27、s due to the ingress of solid foreign objects IP5X: switches protected against access to hazardous parts with a wire and dust-protected; IP6X: switches protected against access to hazardous parts with a wire and dust-tight. 7.2 Replacement in Table 1, first column, last line, of the values “16, 20,
28、25, 32, 40, and 63” by “equal to and above 16”. BS EN 50425:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:03:24 MDTNo reproduction or networking permitted without license from IHS -,
29、-,- 5 EN 50425:2008 8 Marking This clause of Part 1 applies except as follows. 8.1 Replacement of the first dash with: rated current in amperes (A); Addition: symbols IEC 60417-5007 and IEC 60417-5008 respectively for open position (OFF) and closed position (ON), 8.3 Addition: The following informat
30、ion shall be distinctly and durably marked on the firemans switch in a position where it can be clearly seen without opening the enclosure and when the switch is installed: I and O symbols not less than 10 mm high; letters reading NEON in letters not less than 15 mm high. 8.6 Deletion of Note 1. 9 C
31、hecking of dimensions This clause of Part 1 applies. 10 Protection against electric shock This clause of Part 1 applies. 11 Provision for earthing This clause of Part 1 applies. BS EN 50425:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licens
32、ee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:03:24 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 50425:2008 6 12 Terminals This clause of Part 1 applies except as follows: Replacement of Table 2 by the following new table: Table 2 Relationship between rated cu
33、rrents and connectable cross-sectional areas of copper conductors for screw type terminals Ranges of rated currents Rigid conductors (solid or stranded) a A Nominal cross-sectional areas mm2 Diameter of largest conductor mm 16 b Above 16 up to and including 25 Above 25 up to and including 32 Above 3
34、2 up to and including 50 Above 50 up to and including 80 Above 80 up to and including 100 Above 100 up to and including 125 From 1,5 up to 4 inclusive From 2,5 up to 6 inclusive From 4 up to 10 inclusive From 6 up to 16 inclusive From 10 up to 25 inclusive From 16 up to 35 inclusive From 25 up to 50
35、 inclusive 2,72 3,34 4,34 5,46 6,85 7,90 9,10 a The use of flexible conductors is permitted. b Each supply terminal of firemans switches, other than those of pattern numbers 3 and 03, shall allow the connection of two 2,5 mm2 conductors. For firemans switches having a rated voltage not exceeding 250
36、 V a round hole is sufficient for the connection of two 2,5 mm2 conductors. BS EN 50425:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:03:24 MDTNo reproduction or networking permitted
37、 without license from IHS -,-,- 7 EN 50425:2008 12.2.5 Replacement of Table 3 by the following new table: Table 3 Tightening torque for verification of the mechanical strength of screw-type terminals Torque Nm Nominal diameter of thread mm 1 2 3 4 5 Up to and including 1,6 Above 1,6 up to and includ
38、ing 2,0 Above 2,0 up to and including 2,8 Above 2,8 up to and including 3,0 Above 3,0 up to and including 3,2 Above 3,2 up to and including 3,6 Above 3,6 up to and including 4,1 Above 4,1 up to and including 4,7 Above 4,7 up to and including 5,3 Above 5,3 up to and including 6,0 Above 6,0 up to and
39、including 8,0 Above 8,0 up to and including 10,0 Above 10,0 up to and including 12,0 Above 12,0 up to and including 15,0 0,05 0,1 0,2 0,25 0,3 0,4 0,7 0,8 0,8 1,2 2,5 1,2 1,2 1,4 1,8 2,5 3,5 4,0 5,0 0,1 0,2 0,4 0,5 0,6 0,8 1,2 1,8 2,0 2,5 3,5 4,0 0,1 0,2 0,4 0,5 0,6 0,8 1,2 1,8 2,0 3,0 6,0 10,0 1,2
40、1,8 2,0 3,0 4,0 6,0 8,0 10,0 NOTE 1 Column 1 applies to screws without heads if the screw when tightened does not protrude from the hole, and to other screws which cannot be tightened by means of a screwdriver with a blade wider than the diameter of the screw. Column 2 applies to nuts of mantle term
41、inals which are tightened by means of a screwdriver. Column 3 applies to other screws which are tightened by means of a screwdriver. Column 4 applies to nuts of mantle terminals in which the nut is tightened by means other than a screwdriver. Column 5 applies to screws or nuts, other than nuts of ma
42、ntle terminals, which are tightened by means other than a screwdriver. Where a screw has a hexagonal head with a slot for tightening with a screwdriver and the values of columns 3 and 5 are different, the test is made twice, first applying to the hexagonal head the torque specified in column 5 by me
43、ans other than a screwdriver and then applying the torque specified in column 3 by means of a screwdriver. If the values of columns 3 and 5 are the same, only the test with the screwdriver is made. NOTE 2 For mantle terminals the specified nominal diameter is that of the slotted stud. NOTE 3 The sha
44、pe of the blade of the test screwdriver should suit the head of the screw to be tested. NOTE 4 The screws and nuts should not be tightened in jerks. BS EN 50425:2008 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not f
45、or Resale, 08/14/2008 21:03:24 MDTNo reproduction or networking permitted without license from IHS -,-,- EN 50425:2008 8 Replacement of Table 4 by the following new table: Table 4 Test values for flexion and pull-out for copper conductors Conductor cross-sectional area mm2 Diameter of bushing hole a
46、 mm Height H b mm Mass for conductor kg 1,5 6,5 260 0,4 2,5 9,5 280 0,7 4,0 9,5 280 0,9 6,0 9,5 280 1,4 10,0 9,5 280 2,0 16,0 13,0 300 2,9 25,0 13,0 300 4,5 35,0 14,5 320 6,8 50,0 16,0 340 9,5 a If the bushing hole diameter is not large enough to accommodate the conductor without binding, a bushing
47、having the next larger hole size may be used. b Tolerance for height H = 15 mm. 12.2.6 Replacement of Table 5 by the following new table: Table 5 Test values for pull-out test Cross- sectional area of conductors accepted by the terminal mm2 From 1,5 up to 2,5 inclusive From 2,5 up to 4 inclusive From 4 up to 6 inclusive From 6 up to 10 inclusive From 10 up to 16 inclusive From 16 up to 25 inclusive From 25 up to 35 inclusive From 35 up to 50 inclusive Pull N 50 50 60 80 90 100 190 235 12.2.7 Replacement of Table 6 by the fol
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