MID/AN/08

Reconditioning / Strengthening of the charging system, breaker engaging system and releasing system of the 800 amp. 6.6 KV Vacuum Circuit Breaker at L.I.S Rajal by way of replacement of the charging system, gear box assembly, cradle tension springs 02 Nos. , closing coil 01 No., tripping coil 01 No. with proper alignment of the replaced parts. Job includes oiling of all moving parts and greasing of trolley wheels with locks for smooth movement of trolley during the time of engaging and disengaging of the breaker. The job includes cost of material, labour charges for dismantling, re-assembling and servicing including testing at site.

Fabrication, Providing and fitting of new lower arm/male contact along with its mating contact (as per the samples provided by the department) made up of copper to M.E.I make, G.U.D type 800 amps. H.T V.C.B. at site. The job includes cost of copper material, nuts &bolts and labour charges for skilled & semi skilled workers with hire charges for deployment of tools & tackles.

Fabrication, Providing and fitting of pair of copper shunts (as per sample provided by the deptt.) along with nuts and bolts. The job includes cost of material and labour charges for skilled & semi skilled workers with hire charges for deployment of tools & tackles/electrical instruments including charges for testing & commissioning at site.

Reconditioning & strengthening of Oil Circuit Breaker (O.C.B) Unit No.-04 installed in the H.T control Panel of 800 Amps at L.I.S Rajal. by way of repairing the charging system, breaker engaging system and releasing system of M.E.I make, G.U.D type 800 amps. H.T oil circuit breakerunit no. 03installed in control panel at LI.S. Rajal by way of replacement/rebuilding of damaged/worn-out parts/links of mechanism assembly, ball and socket assembly, worn out bushes with setting up of proper tension of closing and releasing springs after proper alignment of the replaced parts then oiling of bushes and bearings also to moving parts, repairing /proper greasing to trolley wheels for smooth movement of trolley during the time of installation with providing new locks to wheels, applying Vaseline on contact points for smooth functioning of tripping and releasing system. The job includes cost of material ,skilled & semi skilled labour charges for dismantling, reassembling and servicing also hire charges for deployment of tools & tack esincluding installation, testing at site.

Reconditioning / Strengthening of base assemblies of 800 amps. 6.6 kV, M.E.I make, G.U.D type, H.T oil circuit breaker by way of extraction of all damaged / worn out Top & Bottom finger contacts& fitting of new finger contact at their respective places. Repairing of 03 No. rupturing chambers by way of filling superior quality epoxy compound at worn-out portion turning finishing to attain proper size of hole of rupturing chamber along with straightening/alignment after complete cleaning & then silver coating of 02 No. moving contact assembly with soldering, re-filling at worn-out portions and machining to attain proper size. Providing silver coating on the contact plates, replacement of oil from repture chamber. The job includes cost of material, labour charges, assembling charges of breaker, charges for installation, testing & commissioning at site.

Fabrication/Providing & fitting of new upper arm /male contact assembly made up of copper with silver coated to M.E.I make, G.U.D type 800 amps. H.T Breaker (as per the sample provided by the department). The job includes cost of material and labour charges for skilled &semi skilled workers with hire charges for deployment of tools & tackles also electrical instruments at site also charges for testing & commissioning.

Transportation charges for shifting of damaged Vacuum Circuit Breaker & Oil Circuit Breaker (O.C.B) installed in the H.T control Panel of 800 Amps at L.I.S Rajal to workshop and back shifting to site of installation after reconditioning involving manual loading, mechanical transportation and handling charges.

R K Electrical and Engineering Works

Chargotra Trading Co.