《BS-6182-2-1982.pdf》由会员分享，可在线阅读，更多相关《BS-6182-2-1982.pdf（10页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS 6182-2: 1982 Incorporating Amendment No. 1 Intrinsically safe power supplies for use in coal mines Part 2: Specification for a.c. power supplies UDC 622.33.005:621.3.031:621.311.4.025 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:41:36 GMT+00:00 2006, Uncontrolled Cop
2、y, (c) BSI BS 6182-2:1982 This British Standard, having been prepared under the direction of the Mining and Quarrying Requisites Standards Committee, was published under the authority of the Board of BSI and comes into effect on 30 September 1982 BSI 07-1999 The following BSI references relate to th
3、e work on this standard: Committee reference MQE/25 Draft for comment 80/72154 DC ISBN 0 580 12417 7 Cooperating organizations The Mining and Quarrying Requisites Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: Associatio
4、n of British Mining Equipment Companies* Association of Mining Electrical and Mechanical Engineers British Electrical and Allied Manufacturers Association (BEAMA)* British Quarrying and Slag Federation Council for Electrical Equipment for Flammable Atmospheres (BEAMA)* Engineering Equipment Users As
5、sociation Health and Safety Executive* Institute of Quarrying Institution of Mechanical Engineers Institution of Mining and Metallurgy Institution of Mining Engineers Mechanical Handling Engineers Association National Coal Board* National Union of Mineworkers* The organizations marked with an asteri
6、sk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: National Association of Colliery Overmen, Deputies and Shotfirers (NACODS) Coopted member Amendments issued since publication Amd. No.Date
7、of issueComments 4784February 1985Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:41:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6182-2:1982 BSI 07-1999i Contents Page Cooperating organizationsInside front cover Forewordii 1Scope1 2Definition1 3De
8、sign and construction1 4Marking2 5Routine tests2 Appendix A Guidance on interconnection with other equipment4 Appendix B Measurement of leakage inductance4 Figure 1 Circuit arrangement for intrinsically safe a.c. power supply3 Table 1 Output characteristics and component specifications2 Table 2 Maxi
9、mum inductance of cables and load for connection to the output of the power supply4 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:41:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6182-2:1982 ii BSI 07-1999 Foreword This British Standard has be
10、en prepared 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 specifi
11、ed to give a power 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 fo
12、llowing voltages: a) an 18 V power supply that may be used, for example, to float charge an intrinsically safe battery with a nominal discharge end-point voltage of 12 V; b) a 12 V power supply for use where battery standby is not required, or to float charge an intrinsically safe battery with a nom
13、inal discharge end-point voltage of 7.5 V; c) a 7.5 V power supply that may be used, for example, with equipment using logic circuits requiring 5 V for operation. Part 2: specifies requirements for power supplies providing a.c. outputs. Two output voltages are specified for the following purposes: a
14、) a 12 V r.m.s. output to supply intrinsically safe apparatus where maximum power availability is the predominant requirement; b) a 15 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
15、range of rechargeable battery units that are to be charged from the power supplies specified in Parts 1 and 2. Certification. Attention is drawn to the Health and Safety at Work etc. Act 1974, the Mines b) a 15 V r.m.s. output to supply intrinsically safe apparatus where a higher operating voltage i
16、s more important than available power. 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 oth
17、er suitable enclosure. Requirements 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
18、 of components forming a power supply circuit mounted on a metal chassis 3 Design and construction 3.1 General. The power supply shall comply with the requirements of either: a) BS 5501-7 for group I category “ia” apparatus; or b) BS 1259 class 1. NOTE 1Since the issue of BS 1259 in 1958, the certif
19、ication authority in the United Kingdom, using its discretionary powers, has established in the interim more detailed requirements. Manufacturers intending to obtain certification to BS 1259 should therefore seek guidance from the certifying authority before commencing manufacture to this standard.
20、The power supply unit shall be designed for 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 gi
21、ve a degree of protection not less than IP20 as defined in BS 5490; 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 uni
22、t. Each type of power supply unit shall comply 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 standar
23、d. The preferred values are 120 V and/or 240 V, or 550 V and/or 1 100 V. 3.4 Working temperature. When enclosed in the manner of 3.1 1) or 3.1 3), the power supply unit shall be capable of operating continuously when the enclosure is subject to ambient temperature in the range of 5 C to + 40 C. NOTE
24、When the power supply unit is intended for enclosure in the manner of 3.1 2), the operating temperature range should be agreed between the purchaser and the manufacturer. The preferred range is 5 C to + 70 C. 3.5 Power supply circuit 3.5.1 General. The power supply circuit shall be as shown in Figur
25、e 1. Circuit components shall be mounted on a metal chassis having facilities for making a connection to earth. Any covers required by 3.1 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 dist
26、ances and clearances to earth. The secondary winding of the 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 BS 5501-7. 3
27、.5.3 Insulation from earth. In addition to the requirements of BS 5501-7, the insulation resistance between all parts of the circuit connected to the secondary side of the transformer and earth shall not be less than 1 M7 when tested at 500 V d.c. 3.6 Circuit components 3.6.1 General. All components
28、 shall meet the relevant requirements specified in BS 5501-7, and also Table 1 of this Part, and shall also comply with the requirements of 3.6.2 and 3.6.3. 3.6.2 Transformer. When tested by the method given in Appendix B, the leakage inductance referred to the output winding shall not exceed 200 4H
29、 for the 12 AC power supply and 300 4H for the 15 AC power supply. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:41:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6182-2:1982 2 BSI 07-1999 Table 1 Output characteristics and component specifications Effective means shall be provided to
30、prevent mains input connections to any adjustable voltage tappings on the transformer being easily changed, for example, soldered connections are acceptable. The primary input connections shall be clearly and unambiguously identified so that incorrect connection is improbable. 3.6.3 Current limiting
31、 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 complies with the value given in Table 1. The inductance of the current limiting resistance shall not exceed 5 4H. The r
32、esistance 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 enclosure. 4 Marking In addition to the marking prescribed in BS 5501-7 or BS 1259, as appropriate, the power supply chas
33、sis shall be marked with: a) power supply type (see Table 1) and the number of this standard, i.e. BS 6182-21); b) manufacturers serial number; c) rated input voltage and frequency on a separate label. In addition, when the power supply unit is intended for enclosure in the manner of 3.1 2), the mar
34、king shall include the maximum ambient temperature as agreed between manufacturer and purchaser (see note to 3.4). If the chassis marking is not visible with the cover fitted then the cover shall also be marked. 5 Routine tests In addition to any tests required by BS 5501-7, the following tests shal
35、l be applied to every power supply unit in an ambient temperature of 20 C: a) measurement of leakage inductance for compliance with 3.6.2; b) measurement of the values of voltage and current for compliance with the figures given in Table 1; c) measurement of the insulation resistance for compliance
36、with 3.5.3. Type of power supply unit Fuse rating, FS1 and FS2 Current limiting resistance R TransformerMinimum power supply output current Resistance (see note 1) Power rating (see note 2) PrimaryOpen circuit output at nominal input 12 AC 15 AC A 2 2 7 16 2 % 34 2 % W 17 13 V See note to 3.3 V r.m.
37、s. 11.7 to 12 14.5 to 15 200 mA at 8 V 125 mA at 10 V NOTE 1This value is calculated under the terms of paragraph 2 of clause 9 of BS 5501-7:1977. NOTE 2The values shown include a two-thirds derating factor as required by BS 5501-7. 1) Marking BS 6182-2 on or in relation to a product is a claim by t
38、he 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 to the availability of third party certification to support such claims should be addressed to t
39、he Director, Quality Assurance Division, BSI, Maylands Avenue, Hemel Hempstead, Herts HP2 4SQ in the case of certification marks administered by BSI or to the appropriate authority for other certification marks. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:41:36 GMT+00:00 2006, Uncontro
40、lled Copy, (c) BSI BS 6182-2:1982 BSI 07-19993 Figure 1 Circuit arrangement for intrinsically safe a.c. power supply Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:41:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6182-2:1982 4 BSI 07-1999 Appendix A Guidance on interconnection with oth
41、er equipment The design of the power supply circuit is such that when the power supply unit is connected to a load there are 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 indu
42、ctance of cables and load for connection to the output of the power supply Appendix B Measurement of leakage inductance The primary 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
43、energize the bridge it shall be established that this does not introduce significant errors. This can be achieved by relating the method to the results obtained in a type test. Power supplyMaximum inductance per ohm Maximum inductance 12 AC 15 AC 4H/7 65 100 mH 0.1 0.6 NOTEThe values are given extra
44、polated from ignition curves in BS 5501-7. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:41:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6182-2:1982 BSI 07-1999 Publications referred to BS 1259, Intrinsically safe electrical apparatus and circuits for use in explosive atmospheres. BS
45、 5490, Specification for degrees of protection provided by enclosures. BS 5501, Electrical apparatus for potentially explosive atmospheres. BS 5501-7, Intrinsic safety “i”. BS 6182, Intrinsically safe power supplies for use in coal mines. BS 6182-1, Specification for d.c. power supplies2). BS 6182-3
46、, Specification for rechargeable battery units2). 2) Referred to in the foreword only. Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 07:41:36 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6182-2: 1982 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the inde
47、pendent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that th
48、ey possess the latest amendments or editions. It is the 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 British Standard would inform the Secretary of the technical committee responsible, the
49、identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. 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 Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been publish