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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 corrigendum : annual purchase of drinking water supplies, motor and other supplies for all the villages under kanchiganal gram panchayath channagiri taluk - bearing set//wat//, lock//wat//, cpvc bush 2 1/2 inch //wat//, cpvc bush 2 inch//wat//, cpvc bush 1 1/4 inch //wat//, cpvc bush 1 inch //wat//, cpvc union mta,fta 1 inch//wat//, cpvc elbow 1 inch//wat//, cpvc t 1 inch //wat//, cpvc colar 1 inch//wat//, cpvc bend 1 inch//wat//, cpvc pipe 1 inch//wat//, h d pipe 2 1/2 inch //wat//, h d pipe 2 inch //wat//, gi planel box 2x2 //wat//, ams/volt meter//wat//, relay//wat//, axle blade//wat//, gum//wat//, motor 1 hp//wat//, copper cable 10 mm//wat//, copper cable 6.0 mm //wat//, copper cable 4.0 mm //wat//, coppercable 2.2 mm //wat//, gi pipe tata 2 1/2 inch//wat//, plaunge 2 inch //wat//, gi pipe tata 2 inch//wat//, gi nrv bush 2 inch //wat//, bore well cap//wat//, gi nipple 3 inch //wat//, gi nipple 2 1/2 inch//wat//, gi nipple 2 inch//wat//, nalli set 3/4 inch //wat//, nalli set 1/2 inch//wat//, pvc pipe 4g 2 1/2 inch //wat//, r r coplar 3 inch //wat//, r r coplar 2 1/2 inch//wat// , r r coplar 2 inch //wat//, pvc pipe 6g 3 inch//wat//, pvc pipe 6g 2 1/2 inch//wat//, pvc pipe 6g 2 inch //wat//, silvis valve 3 inch//wat//, silvis valve 2 1/2 inch //wat//, silvis valve 2 inch//wat//, starter 1 t l l k 32 a//wat//, starter board set l t l k//wat//, starter board set h t p//wat//, meter a/v wire 16/300 mm//wat//, meter a/v wire 12/305 mm//wat//, meter a/v wire 10/305 mm//wat//, meter a/v wire 10/90 mm//wat//, pump stage 18//wat//, pump stage 16//wat//, pump stage 14//wat//, pump stage 12//wat//, pump stage 10//wat//, motor pump set kmp 6+10//wat//, motor pump set kmp 10+16//wat//, motor pump set kmp 7.5+14 //wat//, motor pump set kmp 7.5+10//wat//, motor stage set 5/10//wat//, ball valve 2 1/2 inch //wat//, ball valve 2 inch //wat//, ball valve 1 1/2 inch //wat//, ball valve 1 inch //wat//, ball valve 3/4 inch//wat//, ball valve 1/2 inch //wat//, brass valve 2 1/2 inch //wat//, brass valve 2 inch //wat//, router//wat//, fuse 63a//wat//, dp switch 100a //wat//, dp switch 63a //wat//, fuse link //wat//, amps meter //wat//, auto starter//wat//, preventor//wat//, nrv 3 inch //wat//, nrv 2 1/2 inch //wat//, nrv 2 inch //wat//, clamp 2 1/2 inch //wat//, clamp 2 inch//wat//, clamp 1 1/2 inch //wat//, pvc bend 1/2 inch//wat//, pvc bend 3 inch //wat//, pvc bend 2 1/2 inch //wat//, pvc bend 2 inch//wat//, gi bend 2 1/2 inch //wat//, gi bend 2 inch //wat//, gi valve 1 1/2 inch //wat//, gi valve 1 inch //wat//, gi valve 3/4 inch //wat//, gi valve 1/2 inch //wat//, pvc valve 3 inch//wat//, pvc valve 2 1/2 inch //wat//, pvc valve 2 inch //wat//, pvc valve 1 inch//wat//, pvc valve 3/4 inch //wat//, pvc valve 1/2 inch //wat//, gi nipple 2 1/2 - 3 inch //wat//, gi nipple 2 - 2 1/2 inch //wat//, gi nipple 1 1/2 - 2 inch //wat//, gi nipple 1 - 1 1/2 inch //wat//, gi nipple 3/4 - 1 inch //wat//, gi nipple 1/2 - 3/4 inch//wat// , gi reducer 3 - 2 1/2 inch//wat// , gi reducer 2 1/2 - 2 inch//wat// , gi elbow 2 1/2 inch//wat//, gi elbow 2 inch//wat//, gi elbow 1 inch //wat//, gi elbow 3/4 inch //wat//, gi elbow 1/2 inch //wat//, pvc reducer 3- 2 1/2 inch//wat// , pvc reducer 2 1/2 - 2 inch //wat//, pvc elbow 2 1/2 inch//wat//, pvc elbow 2 inch //wat//, pvc elbow 3/4 inch//wat//, pvc elbow 1/2 inch//wat//, saddle 3 inch //wat//, saddle 2 1/2 inch //wat//, saddle 2 inch //wat//, gi t 2 1/2 inch //wat//, gi t 2 inch//wat//, gi t 1 1/2 inch //wat//, gi t 1 inch//wat//, gi t 3/4 inch //wat//, gi t 1/2 inch //wat//, pvc t 2 1/2 inch //wat//, pvc t 2 inch //wat//, pvc t 1 1/2 inch //wat//, pvc t 1 inch //wat//, pvc t 3/4 inch//wat//, pvc t 1/2 inch //wat//, gi collar 2 1/2 inch //wat//, gi collar 2 inch//wat//, gi collar 1 1/2 inch//wat//, gi collar 1 inch //wat//, gi collar 3/4 inch //wat//, gi collar 1/2 inch //wat//, pvc collar 2 1/2 inch //wat//, pvc collar 2 inch//wat//, pvc collar 1 inch //wat//, pvc collar 3/4 inch //wat//, pvc collar 1/2 inch //wat//, a
Tender For corrigendum : supply of main switchboard msb-1 with control section distributionsection and complete power management system pms facility as per tsp section ii para 1.1 2.1 , main switchboard msb-2 with control section distribution section and complete power management system pms facility as per tsp section ii para 1.1 2.1 3.1 , switchboard for emergency diesel alternator 135kw consisting of control section and feeder section as per tsp section ii para 1.1 2.1 3.1 , power distribution boards pdbs 415vac mccb type 3 ph in 3 ph out 12 output with auto changeover facility as per tsp section ii para 2.3 3.3 , power distribution boards pdbs 415vac mccb type 3 ph in 3 ph out 4 output as per tsp section ii para 2.3 3.3 , power distribution boards pdbs 415vac mccb type 3 ph in 3 ph out 10 output as per tsp section ii para 2.3 3.3 , power distribution boards pdbs 415vac mccb type 3 ph in 3 ph out 8 output as per tsp section ii para 2.3 3.3 , power distribution boards pdbs 230vac mcb type 3 ph in 3 ph out 8 output with manual changeover switch as per tsp section ii para 2.3 3.3 , power distribution boards pdbs 230vac mcb type 3 ph in 1 ph out 12 output as per tsp section ii para 2.3 3.3 , power distribution boards pdbs 24vdc mcb type 8 output as per tsp section ii para 2.3 3.3 , power distribution boards pdbs 24vdc mcb type 8 output with interlock circuit as per tsp section ii para 2.3 3.3 , lighting distribution boards ldbs 230vac mcb type 1 ph in 1 ph out 8 output as per tsp section ii para 2.3 3.3 , shore supply connection box sscb as per tsp para 2.4 3.4 , external supply panel of 800a as per tsp para 2.5 3.5 , rectifier cum battery chargers with batteries 60a 1.5kw24vdc as per tsp para 2.6 3.6 , rectifier cum battery chargers with batteries 130a 3kw24vdc as per tsp para 2.6 3.6 , on board spares separate list for msb, esb pdbs esp scb , documentation separate list for msb esb pdbs esp scb , installation material as per tsp separate list for msb esb pdbs esp scb , services of engineers installation and stw , services of engineers for hats , services of engineers for sats , training , monthlywarranty extension charges for 12 months beyond december 2026 , represervation of charges 06 months for msbesb apms rectifier cum battery charger if required , extra man-days for 1st year , extra man- days for 2nd year