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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, 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 work of 1) erection, commissioning of equipments, control wiring etc. of 220/66kv 160 mva transformer no.-2 bay for ehv class substation augmentation and 132kv busbar protection panel commissioning at 220kv vallabhipur ss 2)11 kv capacitor bank shifting & power cable shifting at 66kv bunder road ss and 66 kv sardarnagar ss 3) erection of new h-frame dp structure between loc. no. 35(t) to 36(t) for height raising of 66kv vartej-navagam line 4) erection of new h-frame dp structure between loc. no. 80(s) to 81(s) for height raising of 66kv mamsa-bhadi line under tr. division vartej of tr. circle amreli, getco
Tender For corrigendum : supply of mf capacitor, 80 mfd/500vrms, type- fp-60-700-008, terminal - 5h, 700 kvar, 1400 amp, k/en, make - a , power supply (smps) , 24v i/p, model-mps 10 3 x 400/24, with 3 o/earth, i/p: 230v ac 50hz, 0.42amp. o/ , capacitor water cooled 804 kvar medium frequency capacity 20 mfd+ /- 10% , voltage 800 volt, single ph
Tender For supply of 1 kvar metalized (aluminum body) polypropylene gas filled, waycut three phase self-healing typecapacitor rated at 480 v 50 hz. the can diameter of the capacitor should not be more than 50 mm. ca pacitor shouldhave discharge resistor and over pressure discharge disconnection as per rdso modification sheet no.rdso/pe/ms/ac/0054-2011(rev-0) and conforming to is:13340 with isi mark and properties as de fined in table-1of rdso modification sheet no. rdso/pe/ms/ac/0054-2011 (rev-0) suitable for capacitor ba nk of lhb ac coachesand lhb power cars (as per rcf spec no. edml-130, rev-1, corr-5 or latest) similar t o m/s epcos phicap cat.no.b25671r4012a080 or equivalent model of m/s.vishay.(rdso approved makes) [ warranty period: 30 months after the date of delivery ]
Tender For corrigendum : comprehensive operation and maintenance of the project mainly water treatment plant, different class, type and diameter pipes, pump houses, sumps, rcc esr, h.g.l.r, sluice valves, flow meters, non-return valve, pump, motor, capacitor, l.t. panels, l.t. cables and transformer installed at headwork and sub headwork. work includes replacement of spares for all equipment and maintenance of all civil structures and all electro-mechanical installation etc. complete. including submission of periodic mis reports on software. supply of potable water in accordance, maintaining residual chlorine, bleaching powder, pac and all consumables. all type operations, preventive maintenance, overhauls and repair/ break down maintenance for civil / mechanical & electrical works. providing prescribed nos. of qualified and experienced staff for overall management of o&m work as per detailed specification & obligatory requirement for 24 months. excluding electric power, raw water cost, chlorine supply undersurendranagar integrated water supply scheme phase-2, part-a & b project, tal.-wadhwan, muli, sayla, chotila&thangadh dist.- surendranagar as per tender.
Tender For comprehensive operation and maintenance of the project mainly water treatment plant, differentclass, type and diameter pipes, pump houses, sumps, rcc esr, h.g.l.r, sluice valves, flow meters, non-return valve, pump, motor, capacitor, l.t. panels, l.t. cables and transformer installed at headwork and sub headwork including all materials and work includes replacement of spares for all equipment and maintenance of all civil structures and all electro-mechanical installation etc. complete. including submission of periodic mis reports on software. supply of potable water in accordance, maintaining residual chlorine, and all consumables. all type operations, preventive maintenance, overhauls and repair/ break down maintenance for civil / mechanical & electrical works. providing prescribed nos. of qualified and experienced staff for overall management of o&m work as per detailed specification & obligatory requirement for 03 months. excluding electric power, raw water cost and excluding chlorine gas, pac and bleaching powder under szbt-2 regional water supply schemes oftal. - ankleshwar/hansot, dist.- bharuch as per tender