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State Government

CTN :39565718

10 Mar, 2025 1.51 Lacs

Udhampur - Jammu And Kashmir

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

State Government

CTN :39319675

17 Mar, 2025 NA

Nawabganj - Uttar Pradesh

Tender For corrigendum : supply of tools and spares for track maintenance - insulated level cum gauge -pie brand export quality insulated level cum gauge , versine measuring kit model vk-2 25mm , versine cord nylon cord 1 mm dia , light weight mono rail cum road trolley - wheel barrow rdso spec. no.tm sm 16 dt.31.03.1992 revision 02 of 2022 , mechanical jack 15 ton capacity with handle - non infringing type , wire claw - 8 prongs , pan iron morter 400 mm dia with blended ends 6.4 mm dia wire all around , crow bar steel of length 60 inch dia. 25.4 mm flat ended confirming to is 704-1984 , clearance gauge model c-1 -pie sleigh or clearance gauge model c1 precisely made of hardened stainless steel in metric units , double hexa deep socket black 3 by 4 inch drive 41 mm size. , extension bar 3 by 4 inch square drive 2753 , rake ballast 4 prongs as per specification no. is 3991 drag. no. y-31 , electronic track gauge model al-6e pies electronic track and turnout gauge for standard gauge 1435 mm display system and supplied in a padded carrying bag. , portable bolt tightening machine capacity 1700 nm , portable genset petrol 3 kv petrol run ultra silent , torque wrench with ratched mechanics 135 nm to 675 nm , glass filled nylon 99 gfn liners. drawing no. rdso t-3706 , half moon metallic shim 5mm thickness ctype for 41 mm dia. bolt , half moon metallic shim 3mm thickness c- type for 41 mm dia. bolt , half moon metallic shim 2mm thickness c- type for 41 mm dia. bolt , check rail shim-2 mm thickness for 36 mm dia. bolt material-gi , check rail shim-3 mm thickness for 36 mm dia. bolt material-gi , check rail shim-5 mm thickness for 36 mm dia. bolt material-gi

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