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Tender For providing and fitting of essential items and allied material for snow clearance operation at nathatop sanasar road - supply, testing and commissioning of 48v smps float cum boost automotive battery charger with moveable trolley stand for snow operation at nathatop - sanasar roadgeneral technical requirements for battery charger suitable for 48v vrla type battery1.) type -float & float cum boost charger for vrla type, full wave, full controlled type. 2. ) ratings- 15 a float cum boost for 48v, 150 ah vrla type battery 3. ) ac input- i) voltage 415 vac 10%ii) frequency 50hz 5% iii) phase 3 - phase 4.) d.c.output voltage settings -nominal float fc 48/54.5v (adj. by + 20%, - 5% bc 48/66.5v (adj. by + 2%, - 5%) 5.) output current limit 15a 15a 6. ) power conversion ac to dc by means of three phase full wave, half controlled bridge rectifier consisting of thyristors and diodes. 7.) voltage regulation at bridge output. + 1% of set value for + 10% input voltage variations, 0-100% load variation. 8. ripple voltage less than 3% rms without battery connected. 9. efficiency more than 80% at full load 10. protections (a) input side ac input mccb & elbs with input on/off switch and fuses, contactor (b) output side dc output mccb with output on/off switch and fuses. (c) protection current limit protection, soft start feature, surge suppressor. fast semiconductor fuses for rectifier bridge. (d) control circuit fuses (e) capacitor circuit rectifier hrc fuses. (f) over-voltage cut-back (g) charger over load / short circuit (h) blocking diode 11. controls and switches followings controls and switches are provided in the system 1 ac input source mccbs with interlocking 2 dc output mccb 3 auto/manual float/boost mode selector switch. 4 float and boost voltage variable potentiometers. 5 manual voltage adjustment potentiometer 6 test push button 7 reset push button 8 battery current adjustment potentiometers 9 heater s power supply switch 12. features the following features are provided in the systems: 10 soft start on dc side 11 class-f insulation for all magnetic 12 automatic voltage regulation. 13 automatic changeover from float to boost and vice versa based on current, drawn by battery. 14 filter circuit to eliminate ripple. 15 charger current limit 16 separate battery path current limit. 17 built-in auto phase reversal of operation. 13. meters f.c. b.c. (i)input voltmeter (i) common (ii) input ammeter (ii) input ammeter (iii) output voltmeter (iii) output voltmeter (iv) output ammeter (iv) output ammeter. battery volt meter battery ammeter earth leakage ammeter 14. indications phase on lamps (ii) output on lamp a)phase on lamps (ii) output on lamp. (iii) charger on float led (iv)charger on boost led. 15. annunciation with audiovisual alarms. (i) ac input mains failure (ii) input phase failure (iii) ac under voltage iv) input phase failure v) rectifier fuse failure vi) output fuse failure vii) filter fuse failure viii) dc under voltage ix) dc over voltage x) charger trip xi) capacitor fuse fail xii) output mccb tripped xiii) charger over load xiv) earth leakage xv) dc earth fault xvi) alarm supply fuse failure xvii)battery low condition. v) rectifier fuse failure vi) output fuse failure vii) filter fuse failure viii) dc under voltage ix) dc over voltage x) charger trip xi) capacitor fuse fail xii) output mccb tripped. note : all the alarms shall be provided through electronic display cards. audio alarm through buzzer, visualindication through 10 mm leds & alarm ackn. / reset and led provision is through push buttons. 16. operating ambient temperature surrounding the panel 00 to 500 c 17. surrounding the panel relative humidity. 0-95% non-condensing 18. panel (i) protective grade (ii) cooling (iii)paint ip 42 natural air-cooled smoke grey of iss-692 shade a) average winding temperature rise over ambient temperature b) insulation class c) insulation breakdown voltage. as per relevant iss. f 3 kv for 1 min withstand. 19. cables 1100 v
Tender For supply of visualindication of tm current along with push button switch as per rdso modification sheet no. elrs/ms/0339, rev-1. dated 04.04.2014. as per annexure. [ warranty period: 30 months after the da te of delivery ]
Tender For supply of visualindication of tm current with pus [visualindication of tm current with push button/toggle switch for wap-4 & wag-7 locomotives having gear ratio 23:58 (qty 36nos) & 16:65 (qty 60 nos) respectively as per rdso modification sheet el/ms/ 0339 rev 1 dated 04.04.2014]
Tender For supply of canvas covers - canvas cover for starter of davit winch , canvas cover for mooring capstan , canvas cover for hatch h6 on main deck , canvas cover for accommodation ladder winch 2 deck , canvas cover for master controller of mooring capstan 2 deck , canvas cover for anchor capstan , canvas cover for master controller of anchor capstan 1 deck port and stbd , canvas cover for flag lockers , canvas cover for pyrotechnic locker , canvas cover for ammunition box , canvas cover for lmg , canvas cover for rib and davit winch 1 deck port and stbd , canvas cover for pr boat davit winch 1 deck port and stbd , canvas cover for accommodation ladder control panel and motor , canvas cover for obm 30 hp , canvas cover for crn 91 gun mount , canvas cover for sop , canvas cover for srcg , canvas cover for shore connection box 1 on 01 w dk , canvas cover for shore connection box 2 on qtr dk fr 58 60 port , canvas cover for ss stowage box for auto telephone system qtr deck , canvas cover for weather proof shore connection on qtr deck port and stbd , canvas cover for weather proof shore connection on helo deck , canvas cover for stainless steel stowage box for autotephone system on foxle deck , canvas cover for weather proof shore connections on foxle deck , canvas cover for ss stowage box for autotephone system on bridge wing port and stbd , canvas cover for weather proof shore connection on w h top , canvas cover for explosion proof operator panel 5 zone bh with alarm on qtr deck , canvas cover for explosion proof re entrant horn type speaker 15w on qtr deck , canvas cover for stowage box weather proof cabinet with operator panel 5 zone bh 4 on foxle deck , canvas cover for re entrant horn type speaker 15w with junction box on foxle deck , canvas cover for loudhailer speaker 50w on foxle deck , canvas cover for stowage box weather proof cabinet with operator panel 5 zone bh on bridge wing port , canvas cover for re entrant horn type speaker 15w with junction box on bridge wing port , canvas cover for stowage box weather proof cabinet with operator panel 5 zone bh on bridge wing stbd , canvas cover for re entrant horn type speaker 15w with junction box on bridge wing stbd , canvas cover for stowage box weather proof cabinet with operator panel 5 zone bh on w h top , canvas cover for re entrant horn type speaker 15w with junction box on w h top , canvas cover for explosion proof communication system for internal communication system on qtr deck , canvas cover for external explosion proof audio visualindication ip 56 system on qtr deck , canvas cover for stowage box for headset with 7 pin plug and ptt switch for internal communication system on qtr deck , canvas cover for bhd mounting communication system on foxle deck , canvas cover for external audio visualindication ip 56 with junction box on foxle deck , canvas cover for stowage box for headset with 7 pin plug and ptt switch for internal communication system on foxle deck , canvas cover for bhd mounting communication system ip 56 for internal communication system on w h top , canvas cover for external audio visualindication ip 56 with junction box for internal communication system on w h top , canvas cover for stowage box for headset with 7 pin plug and ptt switch for internal communication system on w h top , canvas cover for stainless steel enclosure ip 44 fitted with bhd mounting intercom station on foxle deck , canvas cover for 15w horn loudspeaker with jb for navigation circuit of intercom talkback system on foxle deck , canvas cover for flasher with footer for navigation circuit of intercom talkback system on foxle deck , canvas cover for stainless steel enclosure on bridge wing port and stbd , canvas cover for 15w horn loudspeaker with jb for navigation circuit of intercom on bridge wing port and stbd , canvas cover for flasher with footer for navigation circuit of intercom talkback system on bridge wing p and s , canvas cover for stainless steel enclosure ip 44 fitted with
Tender For supply, installation and commissioning of audio visualindication in banker loco in case of b p dropping as per the scope of work enclosed. to be procured from past proven sources of indian railway. [ warranty period: 30 months after the date of delivery ]