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Tender For supply of instrument meters devices for basic electric lab bid - rheostat , dc supply , single phase dimmerstat , three phase dimmerstat , digital wattmeter , digital dc ammeter , digital ac ammeter , digital ac voltmeter , digital dc voltmeter , regulated dc supply or rectifier , contactless techometer , basic logic gates , dc motor , induction motor , starter
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 indicating lamp part no me4543 or equivalent , ammeter part no mes4701 or equivalent , voltmeter part no mes4702 or equivalent , ammeter selector switch part no mes4703 or equivalent , voltmeter selector switch part no mes4704 or equivalent , copper busbars main horizontal for field switch part no mdn8789 or equivalent , copper busbars incoming for field switch part no mdn8790 or equivalent , copper busbars outgoing for field switch part no mdn8791 or equivalent , heavy duty epoxy resin cast potential transformer draw out type ratio 6point6 kv 110 v part no med2125 or equivalent , auxiliary switch 8 noplus8 nc part no me4542 or equivalent
Tender For supply of wash point-pump water working pressure 45kg per cm2 , hydraulic ram , tyre removing machine , tyre inflater , co2 extinguisher , air compressor , nylon wire bride hose , gi, b class pipe , sliding jack-hydraulic trolley jack for light and heavy duty vehicles , pneumatic operated greasing machine -50 kg drum capacity , pneumatic operated greasing machine -25 kg drum capacity , battery charger , electric welding , gas welding set , puncture repair machine , grinding machine , bench vices-size 10 inch , digital insulation tester-megger , wheel balancing machine , battery cell tester , hydrometer , tool box trolley , battery operated trolley , vacuum cleaner , foot pump , clamp meter , portable spray or jet hot water washer , installation testing and commissioning charges
Tender For supply of adjustable spanners , combination pliers , long nose pliers , side cutting pliers , wire stripping pliers , insulated flat screw , black tip two in one screw , digital line tester , screw driver kit , socket set 6 point 3mm bracket 1 oblique 4 bracket close , socket set 12 point 7mm bracket 1 oblique 2 bracket close , drift, centre and leather , flat chisel , machinist hammer with handle , cable cutters , organizer comma tool bag for electrician , hand files , round files, smooth taparia , allen key long ball point , hacksaw frame , double ended spanner , masonry drill bits , electrical hand gloves , manual hydraulic cable crimping plier tool kit , digital ac clamp meter with lead , angle grinder , utility knife comma blade
Tender For supply of semi fowler bed with mattress , bed side screen with curtain , bed side attendant bench s.s. , bed side locker with epoxy coating , stretcher trolley s.s. with 6 inch wheel ss , bed side minitor multi 5 channel , bed side food table with height adjustable , patient transfer trolley system , pulse oximeter , infusion pump with stand , foot step epoxy coating , scrub station s.s. , shadowless lamp led floor model , portable shadowless lamp , electric cautery , scissors set , allis forcep set , general anaesthesia set , suture removal , dressing drum , c.t.g. machine , baby incubator servo controlled , rececitation unit neonatal cum trolley , labor table ss with all accessories , air purifier , non invasine billurubin meter , electrolyte analyzer , esr analyzer , digital haemoglino meter , paediatric vein viewer , transport ventilator neonatal , syringe pump , oxygen hood , irradiance meter , breast pump , vaginal speculum , d and c set , cusco speculum all size , dialator set , rectal thermameter , vulluselum forcep set , doyen s retractor set , uterine curette , mangot s hystectomy set , uterus holding forcep , epistomy scissor , uterine sound , hytectomy clamp , waste bin with foot pedal , waste segregation system , multi utility cart on wheel , radiant warmer , heavy storage rack , doctor chair , three seater waiting chair ss , visitor chair , refrigerator , split a.c. 1.5 ton bid number/ & ( * ) : gem/2025/b/5987634 dated/ + : 05-03-2025 bid document/ 2 2 1 / 45