Repair and maintenance of incomer VCB panel-II 800 Amp, 6.6 KV, (25 kA ), 250 MVA installed at Tawi Pump house.

Amount

Repairs to incomer VCB panel-II 800 Amp, 6.6 KV , 250 MVA (25 KA) panel of installed at Tawi Pump House Jammu .Job involves complete checking of VCB panel . Cleaning of chamber from inside using Blower to remove dust and vacuum circuit breaker using cotton rag, all contact point, terminals using cleaning chemical to remove carbon deposits after racking out Breaker from Housing. Replacement of damaged Shunt Trip coil, VTC Closing Coil, Auxiliary Switch and Spring charging Mechanism, bearing housing assembly along with bearing of breaker. Replacement of bottom terminal with jaw contact -01 No. Inserting vacuum interrupter in the compartment. Replacement of capacitor rectifier unit diode 10A 600 PIV,350V 950 MFD, 110 V AC/DC with new one, p/f new indicator LED Bulbs, HRC fuses. Applying Lubricants to mechanical linkages for smooth operation, resetting/ adjustment of vacuum interrupter for proper gap between fixed and moving contacts, checking continuity of all the phases also checking IR value between fixed and moving contact of all the phases, across phases and between phase and earth using megger. Tightening all the terminals properly, checking all control wiring and replacing if any wire seems worn out/ electrical stressed. Replacing damaged job includes cost of material, fitting and testing charges.

PERFECT ELECTRICAL WORKS (BID ID -2326969)

N B Engineering and Electric Works (BID ID -2327606)