Float Rectifier Scrap Tenders

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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

Central Government/Public Sector

CTN :38656693

17 Mar, 2025 NA

Visakhapatnam - Andhra Pradesh

Tender For corrigendum : supply of 70 amp diode bridge rectifier

CTN :39530109

11 Mar, 2025 2.01 Lacs

Chatra - Jharkhand

Tender For providing and fixing bridge rectifier, module single diode, speed monitor and ceramic porcelain busbar support with related spares at different location under chp-cpp/ppr.

Central Government/Public Sector

CTN :39498684

10 Mar, 2025 11.73 Lacs

Sidhi - Madhya Pradesh

Tender For supply of spare parts of auto transformer starter - vaccum contactor 400amp, 6.6kv grade , isolator630a, 6.6kv on-off earth , contactor tp.12 amps ac3duty fitted wit , metal oxide vrstr mov 510, 20 fvcum cntc , diode by255 for vacuum contactor ,vacuum contactor rectifier bridge , vacuumcontactor closing coil 110v dc , vacuumcontactor holding coil 110v dc , p.t 50va ,pri 0 to110v, sec 0 to 8 to 12v , resin cast p.t 200va, voltage6.6kv,110v, 3 ph , earth leakage relay30ma,3a,withtime delay , ammeter selector switch , voltmeter selector wsitch , push button withelement for start, sto , lamp holder with lamp on,off, trip , timer electronics 3sec to 3min, on delay ,relay overvoltage and undervoltage , auxiliaryswitch for vacuum contactor 2n , auxiliarycontactor 3no , plus 1nc, 110v , epoxy mouldd 2core ct ratio 125, 200, 5plus5 , ct oprted , ct sec 5a,motor prtectn relay , ammeter, 96 sq mm ,voltmeter 96 sqmm , local rmte slctr swtch 1pole2way wo off , toggle switch f led lamp and spaceheater

Central Government / Public Sector

CTN :39296649

13 Mar, 2025 NA

Guntakal - Andhra Pradesh

Tender For supply 01 number of full wave three phase silicon diode bridge power rectifier for detc 8-wheeler tower wagon ]

CTN :39320631

05 Mar, 2025 NA

Leh - Jammu And Kashmir

Tender For supply of pcb modules - irfp 9140 , lm 2902 , capicitor 4.7 uf 50v , cap 1000 uf 50v , cap 1000 uf 330 uf 450v , teflon cable , heat sleeves , lm 4755 , pin diode ma4p 197-287 , fuze 7a , fuze 1a , pin diode ma4p 7006e , lm 158 , 7 n 30 , bridge rectifier gsib 1560 , ixfk 120 n 20 , ixfk 96n 15p , thermal conduction silicon pad , du 2820s , lm 741 , connector 4s

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