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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 supply of podcast - chair as per sample , central table as per sample , size table with golden finish , wall unit as per sample , wooden wall hanging , desk-mounted broadcast microphone isi , podmic dynamic podcasting microphone isi , cables , traditional musk , bookshall with books , artificial flower with base , acoustic carpet , wall panelling with ply,laminate , painting of wall with all materials , wire make- kei, richa, havells,polycab , lamp shade , cocept frame as per sample , wall hanging as per sample , flower pot as per sample , 6a 3 pin plug top isi marke make- anchor, havells , 6a 1 way switch make-anchor, havells , 16a socket make- anchor, havells,
Tender For supplying street light materials for annual maintenance in needamangalam town panchayat from 2025-2026 - 15w cfl lamp, 15w cfl lamp with fitting, 18 w cfl lamp, 18w cfl lamp with fitting, 20 w cfl lamp, 20 w cfl lamp with fitting, 35 w cfl lamp, 35w cfl lamp with fitting, 36 w cfl lamp, 36w cfl lamp with fitting, 45 w cfl lamp, 45w cfl lamp with fitting, 60 w cfl lamp, 60w cfl lamp with fitting, 65 w cfl lamp, 65w cfl lamp with fitting, 65w cfl holder, 7/20 pvc.copper wire, 3/20 pvc.copper wire, 1/18 pvc.copper wire, 32a/2401 v main, 16a/2401 v main, 32a fuse unit, plastic wire, 65w cfl fitting, 60w gls, pertent holder, plastic wire copper, 1/18 wire copper, 3/20 wire copper, 7/20 wire copper, 7/20 wire aluminium, 7/16 wire aluminium, 15 a carier, 32 a carier, 63 a carier, 100 a carier, 110 a carier, p.v.c tap roll, street light fitting aluminium, street light fitting ms, 15 a main, 32 a main, 32 a 3 phase main, 7/16 pvc.copper wire, mineral oil, 12 w led light, 18 w led light, 23 w led light, 30 w led light, 40 w led light, shade aluminium, 200a carrier, 85 w cfl, 2.5 sqmm summer cable, 4 sqmm summer cable, 1 hp shatter, 5 hp shatter, 10 hp shatter, 15 hp shatter, 6.0 sq mm 4 core multi copper, 1.0 sq mm 4 core multi copper, 1.5 sq mm 3 core multi copper, 2.0 sq mm 3 core multi copper, 2.5 sq mm 3 core multi copper, 4.0 sq mm 3 core multi copper, 6.0 sq mm 3 core multi copper, 1.0 sq mm 3 core multi copper, 8.0 sq mm 4 core multi copper, 16 mm 4 core aluminium u.g cable, 25 mm 4 core aluminium u.g cable, 1.0 hp single phase motor, 1.5 hp single phase motor, 2.0 hp single phase motor, 5.0 hp three phase motor, 7.5 hp three phase motor, 10 hp three phase motor, 12.5 hp three phase motor, 15 hp three phase motor, 240 v to 350v l&t 3 pole no,nc ac condector, 240v n.c no, clock timer, 20 amp m.c.b, 32 amp m.c.b, 40 amp m.c.b, 63 amp m.c.b, 100 amp m.c.b, 40 amp isolator, 63 amp isolator, 100 amp isolator, water proof tape, 40 amp 3 way connector, 32 amps single phase main, 32 amps three phase main, 63a amp three phase main, 100 amp three phase main, 16 amps fuse unit, 32 amps fuse unit, 63 amps fuse unit, 100 amps fuse unit, 3/4 block screw 6mm, 1" block screw 6mm, 1 1/2 " block screw 6mm, 2 1/2" block screw 6mm, 3" block screw 6mm, 12" x 16" street light main box with wooden board, single phase motor and mcb board box, 2 x 3/8 bolt-nut set, 6 x 3/8 bolt-nut set, 12 no copper wire non sleeve, 14 no copper wire non sleeve, 18 no copper wire100gram, sleeve stay wire 1 kg, 3/4" double clamp set, 1" double clamp set, 1 1/4" double clamp set, 100 amps neutral link, 100 amps earth link, 1/2"chinna clay, 1" chinna clay, 40a rccb 30ma(dp), 4 pole 40a rccb 30ma 40amp, 63 amp 4 pole 63ma rccb, 100 amp 4 pole 100ma rccb, 3/4" wiring pipe, 1" wiring pipe, 3/4 "t" wiring, 3/4 "l" wiring, 3/4 bend wiring, 1 "t" wiring, 1 "l" wiring, 1 bend wiring, 3/4" wiring clamp, 1" wiring clamp, 3/4" and 1"pvc nail clamp
Tender For supply of white & silver fabric shade club floor lamp fitting with metal base, 12w led bul b. make: philips/ havells/crompton. [ warranty period: 30 months after the date of delivery ]