NIT NO. 09 (M-6)ITEM NO. 9

Repairing/Renovation of Aditya Make battery charger by following works :- BCP 30 VDC/20Amp 1~ Aditya make FCBC 1 PHASE 230V # 10%,, supply input -50HZ 35%,, output voltage variation -#0 .05V/cell at rectifier O/P, Nominal output current-20A [10A Battery + 10A Load], Repairing of charging method- Auto Boost &Float, DC O/P voltage settings Nominal-30v (15 cells of 2V/100AH SMF VRLA battery), Float @ 27*C [2.25V/Cell #5%] -33.0V [Adjustable], Boost @27*C [2.35V/Cell #5%]- 34.5V[Adjustable], Ripple-<5% RMS, Noise level - <65 DB, Operational ambient temperature range- 0* C-55* C,Boost charging Automatically and manually- Both modes Rectifier Block Type-Thyristor-Diode full bridge half controlled. DC filter type- LC, Earthing-from body, Protection degree-IP -30, Cooling method- Natural & by fan. Structure steel- CRC, Steel thickness – 16 SWG as per IS., Structure paint – powder coating, AC volt meter type/size/range/Accuracy class- Analog/96x96mm/0-50 A/1.5. , O/P voltmeter type/size /range/Accuracy class- Analog/96x96 mm/0-50 A/1.5., O/P Ammeter Type/Size/Range/Accuracy class- Analog/96x96 mm/0-50 A/1.5. Battery Charge/Discharge/size/range/Accuracy class- Analog/96x96 mm/0-50 A/1.5, I/P breaker- 16A DP MCB, Battery breaker-25A DP MCB,Load breaker-40A DP, MCB, outgoing feeders-16A DP MCB (3Nos), overload protection-Electronic, Short circuit protection-Electronic & MC O/P over voltage protection-Electronic,Rotary switch-3-way 2 pole, Rectifier transformer VA RATING-1200 VA, WINDING-class F copper wire, limits of temperature rise over ambient of 50*C-not more than 90*C, filter choke rating-20A, WINDING-class F copper wire, limits of temperature rise over ambient of 50*C- not more than 90*C,control& Electronics wiring -0.5 sq. mm, AC Power wiring-1.5 sq.mm DC power wiring-6.0 Sq, mm, Blocking Diode-Provided. Standards Applicable-Relevant IS & IEC, Indications-MAINS ON, MAINS FAIL, CHARGER FAIL, RECTIFIRE FUSE FAIL, FILTER FUSE FAIL ,DC OVER LOAD EARTH FAULT

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