1、BRITISH STANDARD BS 6182-3: 1982 Incorporating Amendment Nos. 1, 2 and 3 Intrinsically safe power supplies for use in coal mines Part 3: Specification for rechargeable battery units UDC 622.33.005:621.3.031:621.311.4:621.352BS6182-3:1982 This British Standard, having been prepared under the directio
2、nof the Mining and Quarrying Requisites StandardsCommittee, was published under the authority ofthe Board of BSI and comes intoeffect on 30 September1982 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference MQE/25 Draft for comment 80/72154 DC ISBN 0 580
3、12416 9 Cooperating organizations 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 Engi
4、neers British Electrical 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 Engin
5、eers 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 asterisk in the above list, together with the following, were directly represented on the Technical
6、 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 of issue Comments 4726 November 1984 6236 November 1990 6351 June 1991 Indicated by a sideli
7、ne in the marginBS6182-3:1982 BSI 07-1999 i Contents Page 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 Figure 1 Functional diagram of rechargea
8、ble battery unit 3 Table 1 Battery unit characteristics 1 Table 2 Component specifications 2 Table 3 Maximum inductance of cables and load for connection to the output of the power supply 4 Publications referred to Inside back coverBS6182-3:1982 ii BSI 07-1999 Foreword This British Standard has been
9、 prepared under the direction of the Mining and Quarrying Requisites Standards Committee and specifies requirements for mains fed power supplies which 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 specifie
10、d 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 fol
11、lowing voltages: a) an 18V power supply that may be used, for example, to float charge an intrinsically safe battery with a nominal discharge end-point voltage of12V; b) a 12V power supply for use where battery standby is not required, or to float charge an intrinsically safe battery with a nominal
12、discharge end-point voltage of7.5V; c) a 7.5V 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) a 12Vr.m
13、.s. output to supply intrinsically safe apparatus where maximum power availability is the predominant requirement. b) a 15Vr.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 recha
14、rgeable battery units that are to be charged from the power supplies specified in Parts1 and2. The address of the recognized certification authority in the UnitedKingdom for intrinsic safety aspects is given on the inside back cover of this standard. A British Standard does not purport to include al
15、l the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andi
16、i, pages1 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS6182-3:1982 BSI 07-1999 1 1 Scope This Part of this standard specifies require
17、ments for the construction and testing of a range of nickel cadmium rechargeable battery units intended to be certified intrinsically safe for use in coal mines and which provide an intrinsically safe output. These battery units are rechargeable from the power supplies specified in Parts1 and 2 of t
18、his 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. rechargeable battery unit an assembly of cells and related components mounted within an enclosure 3 Desi
19、gn and construction 3.1 General. The rechargeable battery unit shall comply with the requirements of BS5501-7 for groupI category “ia” apparatus. Each rechargeable battery unit shall consist of sealed nickel-cadmium cells, together with a charging and regulating circuit and an enclosure, and be suit
20、able for use in any attitude. NOTERequirements for enclosures are not given in this standard. 3.2 Type of rechargeable battery unit. Each type of rechargeable battery unit shall comply with the appropriate values given in Table 1. 3.3 Charging and regulating circuit 3.3.1 Each rechargeable battery u
21、nit shall incorporate a charging and regulating circuit such that: a) the configuration of components is as shown in Figure 1; b) there shall be no interruption of the battery supply to the load when the charging supply is disconnected; c) the battery is protected from damage due to overcharging; d)
22、 an externally visible green indicator light is continuously illuminated when the externally connected power supply is energized; e) an externally available connection allows battery charging not limited by the charging and regulating circuit; f) the facilities provided in items d) and e) shall be c
23、learly identified together with the input and output connections; g) the normal shelf life of the battery cells is not degraded; h) the intrinsic safety at the output terminals of the battery unit is not adversely affected by the charging source. 3.3.2 Each rechargeable battery unit designed to be c
24、harged from a12DC or18DC power supply shall comply with the following requirements. a) The battery charging and regulating circuit shall be such that, according to the load requirement, the battery either supplies current additional to that available from the incoming power supply or is charged from
25、 the residue of the incoming power supply. b) Irrespective of the state of charge of the battery, at least50% of the current derived from the incoming power supply shall be available to the external load. c) The current required by the regulating circuit shall not exceed10mA. Table 1 Battery unit ch
26、aracteristics 1 2 3 4 5 6 Battery unit type Nominal output voltage Minimum nominal capacity of battery a Number of cells Maximum output voltage (see 3.4.3) Type of power supply unit source suitable for recharging 8/NC/10 V 8 Ah 10 6 V 8.4 12 DC 14/NC/7 14 7 11 15.4 18 DC 14/NC/2 14 2 11 15.4 18 DC 1
27、4/NC/2/AC 14 2 11 15.4 15 AC a It is important to understand that the minimum nominal capacity of the batteries may not be realised in practice when charged from the designated power supplies.BS6182-3:1982 2 BSI 07-1999 3.3.3 The assembly of cells and the associated charging and regulating circuit s
28、hall be infallibly separated from earthed parts and any outer metallic enclosure by the appropriate creepage and clearance distances specified in BS5501-7. 3.3.4 In addition to the requirements of BS5501-7, the insulation resistance between all parts of the circuit and any outer metal enclosure or e
29、arth as appropriate, shall not be less than1M7 when tested at500Vd.c. 3.4 Output circuit 3.4.1 The value of the current limiting resistance shall be as given in Table 2. NOTEThe resistance may be made up from more than one resistor provided that the combination complies with value given in Table 2.
30、The resistance shall be capable of dissipating the power given in Table 2 without exceeding the manufacturers rated hot spot temperature when the battery is mounted in its enclosure. 3.4.2 The fuse shall have the value given in Table 2 and shall be connected in series with the resistance so as to li
31、mit power dissipation. 3.4.3 When the unit is on charge the voltage at the output terminals, with any two faults applied, as defined in BS5501-7, shall not exceed the value as given in column5 of Table 1. 3.5 Working temperature. Each rechargeable battery unit shall be designed for continuous operat
32、ion in an ambient temperature range of5 C to+40 C. 3.6 Cable connections. Cable connection arrangements shall be either: a) a terminal box or boxes with provision for armoured cable glands fitted for incoming and outgoing cables, with incoming and outgoing circuits adequately segregated; or b) plug
33、and socket connectors fitted subject to a suitable type being agreed between purchaser and manufacturer. Table 2 Component specifications NOTE 1This value is calculated under the terms of paragraph2 of clause9 of BS 5501-7:1977. NOTE 2The values shown include a derating factor of two-thirds as requi
34、red by BS 5501-7. 4 Marking In addition to the marking prescribed in BS5501-7, each rechargeable battery unit shall be marked with: a) rechargeable battery type (see Table 1) and the number of this standard, i.e.BS6182-3 1) ; b) manufacturers serial number. 5 Routine tests The rechargeable battery u
35、nit supplier shall subject each battery unit to charge/discharge cycles in an ambient temperature of20 C until the rated capacity in Table 1 is confirmed. Battery nominal voltage Current limiting resistance Rated current of fuse Resistance Power rating a V 8 14 7 1.81% 4.75% W 64 22 A No fuse 1.0 a
36、The values shown include a derating factor of two-thirds as required by BS5501-7. 1) Marking BS6182-3 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 so
37、lely the manufacturers responsibility. Enquiries as to the availability of third party certification to support such claims should be addressed to the Director, Quality Assurance Division, BSI, Maylands Avenue, Hemel Hempstead HP24SQ in the case of certification marks administered by BSI or to the a
38、ppropriate authority for other certification marks.BS 6182-3:1982 BSI 07-1999 3 Figure 1 Functional diagram of rechargeable battery unitBS6182-3:1982 4 BSI 07-1999 Appendix A Guidance on interconnection with other equipment The design of the battery unit is such that when it is connected to a load t
39、here are limiting electrical parameters that dictate the arrangement permitted by the certifying authority. Table 3 provides guidance on this subject for the user. Table 3 Maximum inductance of cables and load for connection to the output of the powersupply a) Values extrapolated from ignition curve
40、s in BS5501-7 b) Values calculated with reference to ignition curves in IEC79-11 Power supply Maximum inductance per ohm Maximum inductance Power supply Maximum inductance per ohm Maximum inductance 8/NC/10 14/NC/7 14/NC/2 14/NC/2/AC 4H/7 44 31 mH 0.02 0.037 8/NC/10 14/NC/7 14/NC/2 14/NC/2/AC 4H/7 7
41、8 44 mH 0.041 0.056 BS6182-3:1982 BSI 07-1999 Publications referred to BS5501, Electrical apparatus for potentially explosive atmospheres. BS5501-7, Intrinsic safety “i”. BS6182, Intrinsically safe power supplies for use in coal mines. BS6182-1, Specification for d.c. power supplies 2) . BS6182-2, S
42、pecification for a.c. power supplies. IEC79-11, Electrical apparatus for explosive gas atmospheres Part 11 Construction and test of intrinsically safe and associated apparatus. 2) Referred to in the foreword only.BS6182-3: 1982 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution
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