BS 6182-2-1982 Intrinsically safe power supplies for use in coal mines - Specification for a c power supplies《煤矿用固有安全电源 第2部分 交流电源规范》.pdf

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1、BRITISH STANDARD BS6182-2: 1982 Incorporating Amendment No.1 Intrinsically safe power supplies for use in coal mines Part 2: Specification for a.c. power supplies UDC 622.33.005:621.3.031:621.311.4.025BS 6182-2:1982 This British Standard, having been prepared under the directionof the Mining and Qua

2、rrying Requisites StandardsCommittee, was published under the authority ofthe Board of BSI and comes intoeffect on 30 September1982 BSI07-1999 The following BSI references relate to the work on this standard: Committee reference MQE/25 Draft for comment80/72154 DC ISBN 0 580 12417 7 Cooperating orga

3、nizations The Mining and Quarrying Requisites Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: Association of British Mining Equipment Companies* Association of Mining Electrical and Mechanical Engineers British Electrical

4、 and Allied Manufacturers Association (BEAMA)* British Quarrying and Slag Federation Council for Electrical Equipment for Flammable Atmospheres (BEAMA)* Engineering Equipment Users Association Health and Safety Executive* Institute of Quarrying Institution of Mechanical Engineers Institution of Mini

5、ng and Metallurgy Institution of Mining Engineers Mechanical Handling Engineers Association National Coal Board* National Union of Mineworkers* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Technical Committee entrusted wit

6、h the preparation of this British Standard: National Association of Colliery Overmen, Deputies and Shotfirers (NACODS) Coopted member Amendments issued since publication Amd. No. Date of issue Comments 4784 February 1985 Indicated by a sideline in the marginBS6182-2:1982 BSI 07-1999 i Contents Page

7、Cooperating organizations Inside front cover Foreword ii 1 Scope 1 2 Definition 1 3 Design and construction 1 4 Marking 2 5 Routine tests 2 Appendix A Guidance on interconnection with other equipment 4 Appendix B Measurement of leakage inductance 4 Figure 1 Circuit arrangement for intrinsically safe

8、 a.c. power supply 3 Table 1 Output characteristics and component specifications 2 Table 2 Maximum inductance of cables and load for connection to the output of the power supply 4 Publications referred to Inside back coverBS6182-2:1982 ii BSI 07-1999 Foreword This British Standard has been prepared

9、under the direction of the Mining and Quarrying Requisites Standards Committee and specifies requirements for mains fed power supplies that provide intrinsically safe outputs suitable for use in coal mines. A range of d.c.and a.c.power supplies and rechargeable battery units is specified to give a p

10、ower output ensuring both a minimum acceptable performance with connected apparatus and a maximum power output dictated by the requirements of intrinsic safety. This standard is published in three Parts. Part 1: specifies requirements for power supplies providing d.c.outputs of the following voltage

11、s: a) an18V power supply that may be used, for example, to float charge an intrinsically safe battery with a nominal discharge end-point voltage of12 V; b) a12V power supply for use where battery standby is not required, or to float charge an intrinsically safe battery with a nominal discharge end-p

12、oint voltage of7.5V; c) a7.5V power supply that may be used, for example, with equipment using logic circuits requiring5V for operation. Part 2: specifies requirements for power supplies providing a.c.outputs. Two output voltages are specified for the following purposes: a) a12 V r.m.s.output to sup

13、ply intrinsically safe apparatus where maximum power availability is the predominant requirement; b) a15 V r.m.s.output to supply intrinsically safe apparatus where a higher operating voltage is more important than available power. Part 3: specifies requirements for a range of rechargeable battery u

14、nits that are to be charged from the power supplies specified in Parts1 and2. Certification. Attention is drawn to the Health and Safety at Work etc. Act1974, the Mines b) a15 V r.m.s.output to supply intrinsically safe apparatus where a higher operating voltage is more important than available powe

15、r. It is intended that the components forming the power supply circuit be assembled on to a chassis that may be incorporated within either a flameproof enclosure or, where the power supply unit is located outside a potentially explosive atmosphere, within some other suitable enclosure. Requirements

16、for these enclosures are not given in this standard. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Definition For the purposes of this standard the following definition applies. power supply unit an assembly of components forming a power suppl

17、y circuit mounted on a metal chassis 3 Design and construction 3.1 General. The power supply shall comply with the requirements of either: a) BS5501-7 for group I category “ia” apparatus; or b) BS1259 class1. NOTE 1Since the issue of BS1259 in1958, the certification authority in the United Kingdom,

18、using its discretionary powers, has established in the interim more detailed requirements. Manufacturers intending to obtain certification to BS1259 should therefore seek guidance from the certifying authority before commencing manufacture to this standard. The power supply unit shall be designed fo

19、r incorporation within one of the following: 1) a purpose designed flameproof enclosure housing only a power supply unit(s); or 2) a flameproof enclosure of other mains supplied apparatus, in which case the power supply unit shall be fitted with covers to give a degree of protection not less than IP

20、20 as defined in BS5490; or 3) a non-flameproof enclosure where the power supply unit is located outside a potentially explosive atmosphere. NOTE 2It is intended in each case that power supply units will be separately certified. 3.2 Type of power supply unit. Each type of power supply unit shall com

21、ply with the appropriate values given in Table 1. 3.3 Mains input voltage. Each power supply unit shall be designed to operate from single-phase a.c.voltages at mains frequency. NOTEThe value of the voltage is not specified as a requirement of this standard. The preferred values are120 V and/or240 V

22、, or550 V and/or1100 V. 3.4 Working temperature. When enclosed in the manner of3.1 1) or3.1 3), the power supply unit shall be capable of operating continuously when the enclosure is subject to ambient temperature in the range of5 C to+ 40 C. NOTEWhen the power supply unit is intended for enclosure

23、in the manner of3.1 2), the operating temperature range should be agreed between the purchaser and the manufacturer. The preferred range is5 C to+70 C. 3.5 Power supply circuit 3.5.1 General. The power supply circuit shall be as shown inFigure 1. Circuit components shall be mounted on a metal chassi

24、s having facilities for making a connection to earth. Any covers required by3.1 2) shall be fixed in a manner to prevent unauthorized interference and if made of metal shall be electrically connected to the metal chassis. 3.5.2 Creepage distances and clearances to earth. The secondary winding of the

25、 transformer and the current limiting resistance shall be mounted so that any conducting part of the circuit shall be infallibly separated from earthed metal parts by the appropriate creepage and clearance distances specified in BS5501-7. 3.5.3 Insulation from earth. In addition to the requirements

26、of BS5501-7, the insulation resistance between all parts of the circuit connected to the secondary side of the transformer and earth shall not be less than1 M7 when tested at500 V d.c. 3.6 Circuit components 3.6.1 General. All components shall meet the relevant requirements specified in BS5501-7, an

27、d also Table 1 of this Part, and shall also comply with the requirements of3.6.2 and3.6.3. 3.6.2 Transformer. When tested by the method given in Appendix B, the leakage inductance referred to the output winding shall not exceed2004H for the12 AC power supply and3004H for the15 AC power supply.BS 618

28、2-2:1982 2 BSI 07-1999 Table 1 Output characteristics and component specifications Effective means shall be provided to prevent mains input connections to any adjustable voltage tappings on the transformer being easily changed, for example, soldered connections are acceptable. The primary input conn

29、ections shall be clearly and unambiguously identified so that incorrect connection is improbable. 3.6.3 Current limiting resistance. The current limiting resistance R shall be of the value given in Table 1. NOTEThe resistance may be made up from more than one resistor providing that the combination

30、complies with the value given in Table 1. The inductance of the current limiting resistance shall not exceed54H. The resistance shall be capable of dissipating the power given in Table 1 without exceeding the manufacturers maximum rated hotspot temperature when the power supply is mounted in its enc

31、losure. 4 Marking In addition to the marking prescribed in BS5501-7 or BS1259, as appropriate, the power supply chassis shall be marked with: a) power supply type (seeTable 1) and the number of this standard, i.e.BS6182-2 1) ; b) manufacturers serial number; c) rated input voltage and frequency on a

32、 separate label. In addition, when the power supply unit is intended for enclosure in the manner of3.1 2), the marking shall include the maximum ambient temperature as agreed between manufacturer and purchaser (seenote to3.4). If the chassis marking is not visible with the cover fitted then the cove

33、r shall also be marked. 5 Routine tests In addition to any tests required by BS5501-7, the following tests shall be applied to every power supply unit in an ambient temperature of20 C: a) measurement of leakage inductance for compliance with3.6.2; b) measurement of the values of voltage and current

34、for compliance with the figures given in Table 1; c) measurement of the insulation resistance for compliance with3.5.3. Type of power supply unit Fuse rating, FS1 and FS2 Current limiting resistance R Transformer Minimum power supply output current Resistance (seenote1) Power rating (seenote2) Prima

35、ry Open circuit output at nominal input 12 AC 15 AC A 2 2 7 16 2 % 34 2 % W 17 13 V Seenote to3.3 V r.m.s. 11.7 to12 14.5 to15 200 mA at8 V 125 mA at10 V NOTE 1This value is calculated under the terms of paragraph2 of clause9 of BS5501-7:1977. NOTE 2The values shown include a two-thirds derating fac

36、tor as required by BS5501-7. 1) Marking BS6182-2 on or in relation to a product is a claim by the manufacturer that the product has been manufactured in accordance with the requirements of the standard. The accuracy of such a claim is therefore solely the manufacturers responsibility. Enquiries as t

37、o the availability of third party certification to support such claims should be addressed to the Director, Quality Assurance Division, BSI, Maylands Avenue, Hemel Hempstead, Herts HP24SQ in the case of certification marks administered by BSI or to the appropriate authority for other certification m

38、arks.BS6182-2:1982 BSI 07-1999 3 Figure 1 Circuit arrangement for intrinsically safe a.c.power supplyBS 6182-2:1982 4 BSI 07-1999 Appendix A Guidance on interconnection with other equipment The design of the power supply circuit is such that when the power supply unit is connected to a load there ar

39、e limiting electrical parameters that dictate the arrangement permitted by the certifying authority. Table 2 provides guidance on this subject for the user. Table 2 Maximum inductance of cables andload for connection to the output ofthepower supply Appendix B Measurement of leakage inductance The pr

40、imary winding shall be short-circuited and the inductance of the secondary winding measured by a suitable bridge method. If a frequency other than mains frequency is used to energize the bridge it shall be established that this does not introduce significant errors. This can be achieved by relating

41、the method to the results obtained in a type test. Power supply Maximum inductance per ohm Maximum inductance 12 AC 15 AC 4H/7 65 100 mH 0.1 0.6 NOTEThe values are given extrapolated from ignition curves in BS5501-7.BS6182-2:1982 BSI 07-1999 Publications referred to BS1259, Intrinsically safe electr

42、ical apparatus and circuits for use in explosive atmospheres. BS5490, Specification for degrees of protection provided by enclosures. BS5501, Electrical apparatus for potentially explosive atmospheres. BS5501-7, Intrinsic safety “i”. BS6182, Intrinsically safe power supplies for use in coal mines. B

43、S6182-1, Specification for d.c.power supplies 2) . BS6182-3, Specification for rechargeable battery units 2) . 2) Referred to in the foreword only.BS6182-2: 1982 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing Bri

44、tishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is th

45、e constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cove

46、r. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Custo

47、mer Services. Tel:02089969001. Fax:02089967001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides a wide range of information on

48、 national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subsc

49、ribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitte

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