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IRS S 86-2000 | Battery Charger | Rectifier

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IRS: S 86-2000 with Amd 3 GOVERNMENT OF INDIA MINISTRY OF RAILWAYS (Railway Board) INDIAN RAILWAY STANDARD SPECIFICATION FOR BATTERY CHARGERS FOR RAILWAY S&T INSTALLATIONS Serial No. 86-2000 0. FOREWORD 0.1 This specification is issued under the fixed serial No.S-86 followed by the year of adoption as standard or in the case of revision, the year of latest revision. ADOPTED - 92 REVISED - 2000 0.2 This specification requires reference to the following specifications: IRS: S 76-89 IRS:S 23 IS: 6
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  IRS: S 86-2000 with Amd 3 GOVERNMENT OF INDIAMINISTRY OF RAILWAYS(Railway Board)INDIAN RAILWAYSTANDARD SPECIFICATIONFORBATTERY CHARGERS FOR RAILWAY S&T INSTALLATIONSSerial No. 86-20000.FOREWORD 0.1This specification is issued under the fixed serial No.S-86 followed by theyear of adoption as standard or in the case of revision, the year of latestrevision. ADOPTED - 92REVISED - 2000 0.2This specification requires reference to the following specifications:IRS: S 76-89Specification for PVC insulated cables and wires for Indoor Railway Signalling.IRS:S 23Electrical Signalling & Interlocking Equipment.IS: 694PVC insulated cables for working voltage upto andIncluding 1100V.IS: 1248Direct Acting Analogue Indicating Electrical MeasuringInstruments and their accessories.IS: 2026Power TransformersIS: 2208HRC Cartridge fuse links upto 650VIS: 2419Dimensions for panel mounted indicating and recordingElectrical Instruments.IS: 2628Rotary Wafer SwitchesIS: 2736Ceramic Dielectric Capacitors, type 2IS: 2959Contactors for voltage not exceeding 1000V A.C or 1200V D.C.IS: 4064Air break switches, air-break disconnectors, air-breakSwitch-disconnectors and fuse combination units for Voltages not exceeding 1000V ac or 1200V dcIS: 5786Fixed resistors general purpose low power  Self regulating Battery ChargerPage 1 of 21April,2000 October, 0810/17/0810/17/08  IRS: S 86-2000 with Amd 3 IS 6297Transformers and inductors (power audio pulse and(pt. I & II)switching) for electric equipment.IS: 8083Ceramic Dielectric Capacitors of the plate type.IS: 8823Miniature air-break circuit breaker for A.C circuits for Voltage not exceeding 1000V.IS: 2147-1962Degrees of protection provided by enclosure for lowVoltage switch gear and control gear.IS: 8909Fixed resistors, general purpose power IS: 9000Basic environmental testing procedures for electronicsand Electric items.IS: 9224Low Voltage fuses.IS: 9633Fixed polyester film-dielectric capacitors for directcurrent.IS: 10249Voltage dependent resistors (variators)RDSO/SPN/121/91 – Specification for printed circuit boards to be used in RailwaySignalling and Telecom applications.0.3Whenever in this specification, any of the above mentioned specifications isreferred by number only, without mentioning the year of issue, the latestissue of that specification is implied, otherwise the particular issue referredto is meant.0.4This specification is intended chiefly to cover the technical provisions anddoes not include all the necessary provisions of a contract. 1.SCOPE 1.1This specification lays down the requirements and tests for battery chargersfor use in Railway S&T installations.1.2The battery chargers covered in this specification are self-regulating typeand are suitable for charging of lead acid stationary secondary batteries. Inauto mode of working the charger will automatically change over from autofloat to auto boost mode of working if the batteries are discharged and willswitch back to auto float mode after the batteries get charged. A provisionis also made to switch over to manual mode in case failure of auto mode.However, chargers with manual mode alone are not covered by thisspecification.1.3The battery charger covered under this specification shall work satisfactorilymeeting all the prescribed parameters as long as the AC input voltage iswithin 160V-270V range. In case the AC input voltage goes below ‘160V’ or goes above ‘270V’ use of a separate AC voltage stabilizer in conjunctionwith the charger is recommended.1.4The nominal output voltage and the rated output current of the charger arerequired to be specified by the purchaser. Self regulating Battery ChargerPage 2 of 21April,2000 October, 0810/17/0810/17/08  IRS: S 86-2000 with Amd 3 Note 1) : The nominal voltage of a lead acid secondary cell will be taken as 2.0 volts andnominal output voltage of the charger will be calculated accordingly. Theoutput current rating of the battery charger may be calculated by adding thetotal equipment load to be supplied by the charger and one tenth of the AHcapacity of the batteries which are to be kept on float charge by the batterycharger.Recommended capacity of chargers for some of the standard capacity secondarycells in use on Railways are given below: S.NoCell Cap(Amps. Hrs)C/10 RateRecommendedcurrent ratingcharger (Amps)Max. permissibleload (Amps). 1.4041062.80820123.1201230184.200205030Note –2: The current ratings of 5,10,15,20,30,50,75,100 and nominal voltage ratings of 12, 24,36,48,60,110 & 120 volts are recommended for adoption by Railways.This will help in standardising the equipment and ultimately in testing &maintenance.Note – 3: In case, the charger is required for input voltages other than standard 230V AC,the same shall be specified by the purchaser. Special requirements, if any,shall be specified by the purchaser.1.5The charger of 12, 24, 60 & 110 volts output shall have a provision for chargingnumber of cells as mentioned below: OutputVoltageProvision for charging No. of cells 126,7,82412,13,146030,31,3211055, 56, 57LED Indication shall be provided for indication of number of cell selected.1.6One set of spare control card shall be supplied along with each battery charger and shall be kept inside the charger at conspicuous position to avoid any kind of damage. 2.TERMINOLOGY For the purpose of this specification, the terminology given in IRS:S 23 shall apply. 3.CONSTRUCTION 3.1The chargers shall conform to drawings, dimensions and layout, if any, specifiedby the purchaser.3.1.2All cable entry holes should be provided with rubber grommets. Self regulating Battery ChargerPage 3 of 21April,2000 October, 0810/17/0810/17/08  IRS: S 86-2000 with Amd 3 3.2The chargers shall be of natural air cooled type and shall be suitable for indoor use in the cabins where the maximum ambient temperature may reach 55º C. Thechargers shall be of shelf or floor mounting type as specified by the purchaser.3.3The charger shall be of robust construction they shall be housed in shelf supporting cubicles made of cold rolled closed annealed mild steel sheet of thickness not less than 1.6 mm. The cubicles shall be adequately ventilated.Ventilating openings shall be less than 3mm size for protection against entry of lizards etc. The cubical shall confirm to IP-31 type of protection as specified intable 1 of Specification no IS: 2147-1962.3.4The charger cubicles shall be treated with zinc; chromate primer followed byelectrostatic epoxy powder coating paint finish; passivation shall be done throughseven stage process. Small metal parts such as nuts, bolts and washers shall beeither galvanized or chrome plated. All other metal parts of the charger shall beplated for protection against corrosion.3.5The layout of the components and wiring shall be such that all parts are easilyaccessible for inspection, repairs and replacement.3.6The AC input portion shall be clearly isolated and protected to prevent accidentalcontact.3.7All cables and wires used for wiring shall conform to Specification No. IRS:S 76-89/IS 694 (1100V grade) and shall be procured from RDSO approved sources.The cables and wires used shall be neatly secured in position by bunching andstrapping. Aluminium wires shall not be used. The gauge of wiring shall be suchthat the current density does not exceed 3 amps/mm 2 . The colour scheme used for wiring shall conform to normal conventions and shall be shown in the instructionmanual.3.8All connections shall be made through crimped eyelet and shall be numbered withPVC cable marker rings corresponding to the numbers/letters shown in theschematic wiring diagrams. Soldering shall be used only where use of crimpedeyelets is not possible.3.9The schematic-wiring diagram referred in clause 3.8 shall show all wiring used for interconnecting the main components of the charger. This diagram shall be drawnon an anodised aluminium plate of thickness not less than 1 mm and size not lessthan 150 mm x 100 mm and shall be firmly fixed on the inside of the cover of thecharger.3.10The following components shall be provided on the panel as shown in FigureSDO/CH/009 (enclosed):1.ON/OFF-ON/OFF rotary switch as per Cl. 4.5.12.Voltage selector switch as per Cl. 4.5.33.LED Indications and fuses as per Cl. 1.5, 4.6.1, 4.6.2, 4.6.3, 4.6.4 & 4.6.5,4.6.10, 5.1.1.4.Meters as per Cl.4.43.11All non-current carrying metal parts shall be bonded together and earthed. Anearth terminal suitable for taking minimum 4 mm dia wire and with suitable Self regulating Battery ChargerPage 4 of 21April,2000 October, 0810/17/0810/17/08
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