Na Tenders

Protection of Tower Fdns-AP4/0 (Lot-1)

Supply of Cement Solvent for PVC Pipe

INCOMER 1Nos.- 800 Amps four pole air circuit breaker of fault breaking capacity 50 KA EDO, 4 pole 100% Neutral, 415 volt, 3 phase, 50 Hz AC ,designed operational voltage 690 V,Horizontal Draw out type motorized, front operated with microprocessor-based protection release having password protected adjustable over load, short circuit, earth fault protection and neutral protection. The ACB shall have Ics=Icu=Icw for 1 sec. ACBs shall have over-temperature protection feature with 4 NO/NC auxiliary contacts. ACB shall also confirm to latest IEC standards. Protection unit must be with display to see current parameters & fault history with USB port to access stored data of the release. Make of ACBs : Legrand DMX3 (MP4.10 M), ABB Emax (PR123), Siemens 3WA (ETU 600) with suitable Intelligent multifunction digital meter to read V, A, KVA, KWH, PF, Hz etc. having RS 485 port with 3 Nos. resin cast CTs of 2500/5 A class 1.0 accuracy and 15 VA burden. - 2 No. 3 Nos.- Phase indication LED lamps with 2 Amps. back up MCB, breaker ON/OFF/TRIP indicating light with MCB, Over Voltage Relay, Under Voltage Relay, Surge Protection Device Manuual option shall be provided for emergency power supply.

Earthwork

Excavating, supplying and filling of local earth (including royalty)by mechanical transport upto a lead of 5 km also including ramming and watering of the earth in layers not exceeding 20 cm in trenches, plinth, sides of foundation etc. complete.earth lead upto 25m in All kinds of soil

Excavating, supplying and filling oflocal earth (including royalty)by mechanical transport upto a lead of km 1 also including rammingand watering of the earth in layers not exceeding 20 cm in trenches, plinth, sides or foundation etc. complete.