1、BRITISH STANDARDBS EN 60947-5-8:2006Low-voltage switchgear and controlgear Part 5-8: Control circuit devices and switching elements Three-position enabling switchesThe European Standard EN 60947-5-8:2006 has the status of a British StandardICS 29.130.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g
2、56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Wed Apr 11 07:15:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSIBS EN 60947-5-8:2006This British Standard was published
3、under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007ISBN 978 0 580 50048 0National forewordThis British Standard was published by BSI. It is the UK implementation of EN 60947-5-8:2006. It is identical with IEC 60947-5-8:2006.The UK participation in its prepa
4、ration was entrusted by Technical Committee PEL/17, Switchgear, controlgear, and HV-LV co-ordination, to Subcommittee PEL/17/2, Low voltage switchgear and controlgear.A list of organizations represented on PEL/17/2 can be obtained on request to its secretary.This publication does not purport to incl
5、ude 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 issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Wed Apr 11 07:15:38 GMT+00:00 2007,
6、 Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 60947-5-8 NORME EUROPENNE EUROPISCHE NORM December 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassar
7、t 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60947-5-8:2006 E ICS 29.130.20 English version Low-voltage switchgear and controlgear Part 5-8: Control circuit devices and switching elements - Three-po
8、sition enabling switches (IEC 60947-5-8:2006) Appareillage basse tension Partie 5-8: Appareils et lments de commutation pour circuit de commande - Interrupteurs de commande de validation trois positions (CEI 60947-5-8:2006) Niederspannungsschaltgerte Teil 5-8: Steuergerte und Schaltelemente -Drei-St
9、ellungs-Zustimmschalter (IEC 60947-5-8:2006) This European Standard was approved by CENELEC on 2006-11-01. 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 alte
10、ration. 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 t
11、ranslation 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, Cyprus, the Czech Republic, Denmark, Estonia, Finland,
12、 France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: Wang Bin, na, Wed Apr 11 07:15:38 GMT+00:00 2007, Uncontrolled C
13、opy, (c) BSIForeword The text of document 17B/1492/FDIS, future edition 1 of IEC 60947-5-8, prepared by SC 17B, Low-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60947-5-8 on 2006-11-01.
14、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) 2007-08-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-11-01 This part
15、of EN 60947 should be used in conjunction with EN 60947-1:2004 and EN 60947-5-1:2004. The provisions of the general rules, IEC 60947-1, are applicable to this part of EN 60947, where specifically called for. General rules, clauses and subclauses thus applicable, as well as tables, figures and annexe
16、s are identified by a reference to IEC 60947-1, for example 1.2.3 or Annex A of IEC 60947-1. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60947-5-8:2006 was approved by CENELEC as a European Standard without any modification. _ EN 60947-5-8:2006
17、 2 Licensed Copy: Wang Bin, na, Wed Apr 11 07:15:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 EN 60947-5-8:2006 CONTENTS 1 General4 1.1 Scope4 1.2 Normative references 4 2 Terms and definitions .5 3 Classification6 3.1 Contact elements.6 3.2 Three-position enabling switch.6 4 Characteristics .6 4
18、.1 Summary of characteristics6 4.2 Type of three-position enabling switch .6 4.3 Rated and limiting values for switching elements6 4.4 Utilization categories for switching elements 7 4.5 Vacant.7 4.6 Vacant.7 4.7 Vacant.7 4.8 Vacant.7 4.9 Switching overvoltages 7 4.10 Electrically separated contact
19、elements7 5 Product information 7 5.1 Nature of information .7 5.2 Marking .8 5.3 Instructions for installation, operation and maintenance8 5.4 Additional information 8 6 Normal service, mounting and transport conditions8 6.3 Mounting .8 7 Constructional and performance requirements.9 7.1 Constructi
20、onal requirements 9 7.2 Performance requirements.11 8 Tests12 8.1 Kinds of test 12 8.2 Compliance with constructional requirements .13 8.3 Performance13 Annex A (informative) Example of an enabling device incorporating a three-position enabling switch.19 Annex ZA (normative) Normative references to
21、international publications with their corresponding European publications21 Bibliography .20 Figure 1 Operation of three-position enabling switches .10 Figure 2 Operating force, travel and contact status .11 Figure A.1 Enabling device.19 Licensed Copy: Wang Bin, na, Wed Apr 11 07:15:38 GMT+00:00 200
22、7, Uncontrolled Copy, (c) BSIEN 60947-5-8:2006 4 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 5-8: Control circuit devices and switching elements Three-position enabling switches 1 General 1.1 Scope This part of IEC 60947 specifies requirements for three-position enabling switches. These switches are
23、 used as components of enabling devices described in 10.9 of IEC 60204-1 to provide signals that, a) when activated, allow machine operation to be initiated by a separate start control, and b) when de-activated, i) initiate a stop function, and ii) prevent initiation of machine operation. NOTE 1 The
24、 enabling control function is described in 9.2.6.3 of IEC 60204-1. NOTE 2 This standard does not deal with enabling devices. This standard does not apply to: three-position enabling switches for non-electrical control circuits, for example hydraulic, pneumatic; enabling switches without three-positi
25、on mechanism; emergency stop devices (see IEC 60947-5-5). 1.2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (i
26、ncluding any amendments) applies. IEC 60068-2-1:1990, Environmental testing Part 2: Tests Test A: Cold Amendment 1 (1993) Amendment 2 (1994) IEC 60068-2-2:1974, Environmental testing Part 2: Tests Test B: Dry heat Amendment 1 (1993) Amendment 2 (1994) IEC 60068-2-6:1995, Environmental testing Part 2
27、: Tests Test Fc: Vibration (sinusoidal) IEC 60068-2-27:1987, Environmental testing Part 2: Tests Test Ea and guidance: Shock Licensed Copy: Wang Bin, na, Wed Apr 11 07:15:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5 EN 60947-5-8:2006 IEC 60204-1:2005, Safety of machinery Electrical equipment of m
28、achines Part 1: General requirements IEC 60947-1:2004, Low-voltage switchgear and controlgear Part 1: General rules IEC 60947-5-1:2003, Low-voltage switchgear and controlgear Part 5-1: Control circuit devices and switching elements Electromechanical control circuit devices 2 Terms and definitions Fo
29、r the purposes of this document, the relevant definitions given in Clause 2 of IEC 60947-1 and Clause 2 of IEC 60947-5-1 apply, with the following additional definitions. Alphabetical index of definitions Reference A Actuating system (of a three-position enabling switch) . 2.3 Actuator (of a three-p
30、osition enabling switch) 2.4 Auxiliary contact . 2.5 E Enabling device 2.1 T Three-position enabling switch 2.2 2.1 enabling device manually operated control device used in conjunction with a start control and which, when continuously actuated, allows a machine operation 2.2 three-position enabling
31、switch switch having three sequential actuator positions, in which the contacts are closed when the actuator is in the mid position (partly depressed) and are open when the actuator is in the rest (not pressed) position and in the fully depressed position 2.3 actuating system (of a three-position en
32、abling switch) mechanical parts which transmit the actuating force to the contact elements IEV 441-15-21, modified 2.4 actuator (of a three-position enabling switch) part of the actuating system which is actuated by a part of the human body EXAMPLE a button. Licensed Copy: Wang Bin, na, Wed Apr 11 0
33、7:15:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 60947-5-8:2006 6 2.5 auxiliary contact contact of a three-position enabling switch that provides an auxiliary function NOTE Auxiliary contacts may be normally open and/or normally closed. 3 Classification 3.1 Contact elements Subclause 3.1 of IEC
34、60947-5-1 applies. 3.2 Three-position enabling switch Three-position enabling switches may be classified according to the contact element and the nature of the actuating system, e.g. three-position enabling switches, form B. 4 Characteristics 4.1 Summary of characteristics Subclause 4.1 of IEC 60947
35、-5-1 applies. 4.1.1 Operation of a control switch Subclause 4.1.1 of IEC 60947-5-1 applies. 4.1.1.1 Normal conditions of use Subclause 4.1.1.1 of IEC 60947-5-1 applies. 4.1.1.2 Abnormal conditions of use Subclause 4.1.1.2 of IEC 60947-5-1 applies. 4.2 Type of three-position enabling switch 4.2.1 Exa
36、mples of devices incorporating three-position enabling switches push-button enabling devices; grip actuated enabling devices; foot actuated enabling devices; etc. 4.2.2 Number of poles The number of poles shall be stated by the manufacturer. 4.2.3 Kind of current Alternating current or direct curren
37、t. 4.3 Rated and limiting values for switching elements Subclause 4.3 of IEC 60947-5-1 applies. Licensed Copy: Wang Bin, na, Wed Apr 11 07:15:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 7 EN 60947-5-8:2006 4.4 Utilization categories for switching elements Subclause 4.4 of IEC 60947-5-1 applies. 4.
38、5 Vacant 4.6 Vacant 4.7 Vacant 4.8 Vacant 4.9 Switching overvoltages Subclause 4.9 of IEC 60947-1 applies. 4.10 Electrically separated contact elements Subclause 4.10 of IEC 60947-5-1 applies. 5 Product information 5.1 Nature of information The following information shall be given by the manufacture
39、r: Identification a) The manufacturers name or trade mark. b) A type designation or serial number that makes it possible to get the relevant information concerning the switching element (or the entire control switch) from the manufacturer. c) “IEC 60947-5-8” if the manufacturer claims compliance wit
40、h this standard. d) Three-position enabling switches shall be indelibly and legibly marked by the symbol: NOTE If it is not possible to affix the marking to the switch due to size constraints, then the symbol may be put in the instructions for installation, operation and maintenance. Basic rated val
41、ues and utilization e) Actuating forces and operational stroke. f) Rated operational voltages (see 4.3.1.1 of IEC 60947-5-1). g) Utilization category and rated operational currents at the rated operational voltages of the switching element. h) Rated insulation voltage (see 4.3.1.2 of IEC 60947-5-1).
42、 i) Rated impulse withstand voltage Uimpin accordance with 4.3.1.3 of IEC 60947-1. a) j) IP code (see 5.1 and Annex C of IEC 60947-1). k) Pollution degree (see 6.1.3.2 of IEC 60947-5-1). l) Type and maximum ratings of short-circuit protective device (see 8.3.4.3 of IEC 60947-5-1). Licensed Copy: Wan
43、g Bin, na, Wed Apr 11 07:15:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 60947-5-8:2006 8 m) Conditional short-circuit current if less than 1 000 A. n) Indication of contact elements of same polarity. o) Mechanical and/or electrical durability. 5.2 Marking 5.2.1 General Marking of data specified
44、in items a), b), c) and d) of 5.1 is mandatory on the nameplate of the three-position enabling switch in order to permit the complete information to be obtained from the manufacturer. Marking shall be indelible and easily legible, and shall not be placed on screws and easily removable parts. Wheneve
45、r space permits, data under items e) to o) of 5.1 shall be included on the nameplate, or on the three-position enabling switch or otherwise in the manufacturers published literature. 5.2.2 Terminal identification and marking Subclause 7.1.7.4 of IEC 60947-1 applies. 5.2.3 Functional markings To avoi
46、d confusion with emergency stop devices, the actuator of an enabling switch shall not be coloured RED (see also IEC 60204-1). 5.3 Instructions for installation, operation and maintenance Subclause 5.3 of IEC 60947-1 applies. 5.4 Additional information Subclause 5.4 of IEC 60947-5-1 applies. 6 Normal
47、 service, mounting and transport conditions Clause 6 of IEC 60947-1 applies with the following additions. 6.1.3.2 Pollution degree Unless otherwise stated by the manufacturer, a three-position enabling switch is intended for installation under environmental conditions of pollution degree 3. However,
48、 other pollution degrees may apply, depending upon the micro-environment. 6.3 Mounting Means shall be provided to allow the three-position enabling switch to be securely installed in its intended mounting position. Licensed Copy: Wang Bin, na, Wed Apr 11 07:15:38 GMT+00:00 2007, Uncontrolled Copy, (
49、c) BSI 9 EN 60947-5-8:2006 7 Constructional and performance requirements 7.1 Constructional requirements Subclause 7.1 of IEC 60947-1 applies except for 7.1.1, 7.1.2, 7.1.6, 7.1.8 and 7.1.12, and with the following additions. 7.1.1 Materials Subclause 7.1.1 of IEC 60947-5-1 applies. 7.1.2 Current-carrying parts and their connections Subclause 7.1.2 of IEC 60947-5-1 applies. 7.1.3 Clearances and creepage distances Subclause 7.1.3 of IEC 60947-5-1 applies. 7.1.4.3 Actuating f
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