REPAIR MAINT OF VCB TRANSFORMER ISOLATION TRANSFORMER SERVO VOLTAGE STABILIZER UNSV HT JUNCTION BOX CABLE ROUTE INDICATORS GOD AND CONNECTED WORKS AT AF STN BIHTA

M&L for complete preventive/schedule maintenance & overhauling of existing 11 KV, 800 Amps, 26.2 KA or equivalant indoor type single panel HT VCB/RMU Make : Siemens/ Areva/ ABB/ CG Power/ IT Gurgaon/ installed at various locations at Airforce Station Sub Stations by using required T & P including taking down old unserviceale spare parts of any nature and replace with new and making functional upto the satisfaction, working with all functions like OC, UV, EF, instant tripping on fault including testing with required instruments as per secondary injection methode complete all as directed by Engr-in-Charge. The servicing covers the following :- (a) Through cleaning of breaker chamber (b) Lubrication of shutter mechanism/moving parts (c) Checking of shutter movement (d) Checking door interlocks with breaker (e) Checking of breaker interlocks with panel door (f) Checking of breaker rack in/out inside the panel. (g) Coiling of closing and tripping coil (h) Checking of gear box operation. (j) Checking of Test/service Aux. switch operation (k) Checking of tripping mechanism operation. (l) Spring charging limit switches operation. (m) Checking healthiness of three poles. (n) Checking of damping device and setting. (o) Tightness, checking of power connection. (p) Checking of breaker ON/OFF operation manually and electrically. (q) Checking of closing timings.

(r) Checking of tripping timings. (s) Functional checking of all electrical and mechanical operation of breakers. (t) Co-ordination of relay and their testing with required testing equipment according to source incomer VCB and submit report for record. (u) Checking/replacement of non functional strip heaters inside the VCBs and allied works. Note: 1) The breaker shall be repaired through authorised dealer or representative of manufacturer Original Equipment manufacturer representative of Siemens. 2) Contractor is responsible to keep ready requisite spare parts and attend the breakdowns within 24 hours from reciept of complaint fron concern JE/ Engineer in charge. 3) Cost of all unserviceable items are inclusive in quoted rate complete all as specified and directed by Engineer in charge.

S & F Bus bar insulator as per existing size model.suitable for HT 11000 volts. complete all as specified and directed.

Supply, laying, testing and commisioning HT cable XLPE insulated screened PVC bedded, galvanized steel strip or wire armored, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts (Earthed) grade cross sectional area 95 Sqmm 3 core including all electrical connections.Complete all as specified and directed. Note:- Excavation, earth work sand cushioning, cable protection cover/pipe, joint and cable indicator shall be measured and paid for separately under respective item of this schedule of work.

Disconnecting & taking out defective under ground cable from trenches, pole, pipe, floor, wall etc locate the fault, rectify the defect and relaying the XLPE cable under ground PVC insulated and overall sheathed aluminum conductor heavy duty 11000 volts connecting and testing complete all as directed by Engineer-in-Charge (Excavation, earth work, brick protection, sand cushioning and GI pipe etc shall be measured & paid for separately).

Inspection of defective 11 KV HT cable (laid in UG /trench / tunnel/ wall/ surface) to locate the fault using cable fault Locator machine(by surge generators mounted on Van) (fault either by Short/ Moisture/ earth fault or any type) including complete all as directed by Engr-in-charge.

M&L for GOD switch, material and labour for switch Air break gang operated triple pole mechanically operated vertical type 12 insulators and with galvanized frame, operated from ground level including operating rod, handle locking mechanism, current carrying capacity 200 Amps 11000 Volt with nut bolt and washers etc including taking down of old UNSV GOD complete all as specified and as directed.

Supplying, fixing, connecting and testing in repair, single pole zinc oxide (gap less surge type), heavy duty, station class, self supporting outdoor type lightening arresters having rated voltage 09 KV (RMS), discharge current 10 KA insulation level 28/75 KV/KVp (peak) suitable for rated system voltage of 11 KV supply system with maximum continuous operating voltage (MCOV) not less than 7.65 KV (RMS) with highly non linear ceramic resister made of zinc oxide in dermetically sealed container, complete, with metal base, base insulator and suitable terminals for ground connections and pressure relieving arrangement complete all as specified and directed.

M&L Cable jointing kit suitable for 11 KV (Earthed) grade cable outdoor termination, heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 to 120 Sqmm including taking out old u/s one complete all as directed by Engr-in-charge.

M&L Cable jointing kit suitable for 11 KV (Earthed) grade cable indoor termination, heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 70 to 120 Sq mm including taking out old u/s one complete all as specified and directed by Engr-in-charge.