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Tender For corrigendum : tender for supply of single phase preventer , piston oil seal , seal oil piston , bearing , seal oil , seal , seal , o ring , bolt connecting , o ring , spiral spring , seal oil dowty bonded seal , blocking valve assembly , blocking valve , needle roller bearing , flexible hose lp , o ring , rubber segments , ferodo lining , bulb sealing ring sealing ring fwd , mechanical seal , magnetic filter , socket head screw , seal , key , key , oil seal , bounded seal , bonded seal , segment , thermometer , bounded seal , seal bonded , bonded seal , rod , magnetic filter , seal oil , cooper split roller bearings , pla relay 24v , hrc fuses 2amp , o ring , limit switch , rudder seal , o ring , o ring , o ring , o ring , o ring , o ring , o ring , o ring , o ring
Tender For supply of pick up magnetic , vacume indicator , v belt 0178567 , seal thermostat , b check kit, k6 , element, lub oil filter , kit fuel filter and ring , gasket, governor housing , gasket, fuel pump , disc valve , elbow male union , elbow male adapter , bushing reducing pipe s967 , rectifier service kit hc 4 by 5 rsk5001
Tender For supply of glasswares and plasticwares in physics laboratory - measuring cylinder 5 ml , measuring cylinder 10 ml , measuring cylinder 25 ml , measuring cylinder 1000 ml , conical flask with screw cap 1000 ml , conical flask with screw cap 250 ml , beaker 2000 ml , beaker 500 ml , beaker 250 ml , beaker 100 ml , beaker 50 ml , reagent bottles 500 ml , reagent bottles 1000 ml , filter flask with socket and buchner funnel with sintered disk flask cap 500ml and buchner funnel 200ml , micro-centrifuge tubes 2 ml , amber color culture tubes with screw cap 50 ml , petri dish 60mm , petri dish 100 mm , petri dish 150 mm , micropipette 0.2-2.0 ul , micropipette 2-20 ul , micropipette 20-200 micro liter , micropipette 100-1000 ul , mortar and pestle 100-200 ml , droppers 10 ml , tissue paper high quality , filter paper a grade , alumina crucible 1400 c 50 ml , silica crucibles 50 ml , quickpip multichannel pipette 5 to 50 ul , micropipette stand having capacity 6 , tray polypropylene 375 x350 x 130 mm , tray polypropylene 540x 435x 130 mm , tray polypropylene 220 x 150x 70 mm , petri dish disposable, polypropylene free size , aspirator bottles, polypropylene 10 , aspirator bottles, polypropylene 20 , magnetic beads 15x8 , magnetic beads 25 x8 , haemocytometer complete set , test tube stand 24 holes , corning multiwell plates, plate lids and sealing mats 04 set bid number/ & ( * ) : gem/2025/b/6024142 dated/ + : 05-03-2025 bid document/ 2 2 1 / 38
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