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, visual indication 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 12 core single mode armoured optical fibre cable , 24 port fully loaded liu , sm duplex fiber patch cord 2 metre , plb hdpe pipe 40 mm , 12 port ofc cable joint encloser , 24 port layer 2 poe switch with 4 sfp port , 08 port layer 2 poe switch with 2 sfp port , cat6 outdoor utp cable , cat6 utp patch cord 2 mtr , rj45 connector , 3 core power cable 1.5 sq mm , gi pipe 50 mm , pvc conduit 25 mm , rfid smart route marker , rfid electronic marker locator , physical frangible route marker , workstation for softwares , 43 inches led display , laying of cat utp and power cable , laying of 12 core sm ofc cable , laying of hdpe pipe and gi conduit through soft soil digging , hdpe pipe and gi conduit concrete wall , hdpe pipe and gi conduit , hdpe pipe through road cutting , concrete chamber with frp cover , ofc splicing , otdr testing and report submission , installation integration of entire setup , post warranty camc for 1st year , post warranty camc for 2nd year , post warranty camc for 3rd year
Tender For bid to ras supply of compressor block with head and valve , piston and ring of air compressor , connecting rod with bearing , air filter , motor pully , oil seal , starter for three hp motor l andt , power supply board zero four eight seven six three one to eight eighty esab model no tig twenty two hundred i , micro switch for washing unit , protective lens for laser engraving machine f theta lens , protective lens for laser cleaning machine protective window or lens , cutoff switch sixty three amp of sixty three kva generator , copper lug twenty five mm , copper lug sixteen mm , insulation tape sixteen mm twenty five mtr , change over switch hundred amp , contactor aux point two no plus two nc coil voltage two twenty v seventy amp , amp meter zero to hundred ampt with ct , volt meter zero to five hundred volt , electronic timer zero to sixty sec , over load relay zero to forty amp
Tender For bid to ras supply of led batten (q2) , call bell (q3) , piano type non modular domestic fan regulator as per is 11037 (q3) , non - modular piano type domestic electrical switches as per is 3854 (q3) , piano type non modular electrical switch socket combination as per is 3854 and is 1293 (q3) , led recess mounting fitting 2 feet x 2 feet 36w , led bulb 12 watts , mcb sp 10 amp 230 volts 10 ka , mcb sp 06 amp 230 volts 10 ka , capacitor 2 point 5 mfd , socket 16a multi purpose , mcb sp 20 amp 230 volts 10 ka , mcb spn 20 amp 230 volts 10 ka , mcb spn 40 amp 230 volts 10 ka , mcb spn 32 amp 230 volts 10 ka , wire copper pvc 4 sqmm multi stranded single core , wire copper pvc 1 point 5 sqmm multi stranded single core , tape pvc adhesive 25mm x 25 mtr , pvc flexible cable 1 point 5 sqm three core , led street light fittings 90 w , led flood light fitting 180 w , led flood light fitting 50 w , led street light fittings 60 oblique 70 w , mccb 125a 4p 16 ka , mccb 100a 4p 16 ka , mccb 160 a 4p 25 ka , mccb 400a 4p 36 ka 415 volt , mccb 63a 4p 16 ka , mccb 315 oblique 320a 4p 36 ka 415 volt , thermostat for geyser 25 ltr , mcb sp 16 amp 230 volt 10 ka , mcb db spn double door 4 way , led bulk head fitting 10 w , holder batten pvc oblique bkl , mcb sp 32 amp 230 volts 10 ka , ventilation fan 400mm sweep wall mounting fan , p obliquet switch 5 or 6 amp 2 way , mcb tpn 63a , bell push 5 amps , plug top 5 amps 3 pin , regulator electronic for ceiling fan modular type , modular switch 5 amps , modular switch 15 amps , modular socket 5 amps , modular socket 15 amps , sheet metal enclosure with plug top and mcb sp 20a , modular socket with mcb sp 25a