MAINT AND REPAIRS TO VCB HT CABLES AND CONNECTED WORKS AT VARIOUS E M INSTALLATIONS UNDER GE NW NAVY NAGAR COLAB MUMBAI 2ND CALL

Amount

Disconnecting and dismantling the existing indoor type, 11 KV horizontal draw out type VCB trolly of rupturing capacity 250/350 MVA, 400/630/800 Amps from location and repair /overhauling and carrying out with the following all as specified and directed by Engineer-in-Charge. Note :- spare parts will be measured & paid seperately (i) Inspecting / overhauling of manual / motorised spring drive mechanism by checking mechanism, motor and gear assembly, big gear assembly, stop bolt assembly, main shaft interlocking assembly, closing spring assembly, small cam with screw,motor cut -off limit switch, butter fly swich assembly and apply multi grease lubricant to function smoothly. (ii) Inspecting / overhauling of tripping assembly,earthfault release assembly, tripping coil, auxiliary switch and checking of electrical wiring system. (iii) Inspecting / overhauling /cleaning and inspecting through insulators, vacuum interuptors by carbon cleaner solution and apply dry graphite conductive sealant for electrical contacts to avoid carbon deposits on contact surfaces. (iv) Assembling all items/components parts to the respective position & testing the breaker with High Voltage(DC) and meggering before and after high voltage test complete.

Material and labour for painting of HT VCB capacity 250/350MVA,11KV, 400/630/800Amps, with one coat of synthetic enamel paint over a coat of red oxide primer after cleaning, scraping, and filling of cavities for out side surface and in side surface of VCB and all as specified and as directed by Engineer-in-Charge.

Overhauling, calibration and secondary injection of over current earth fault relays/release on each multiple setting readjustment by artificial load complete all as specified including testing complete.

Dismantling, overhauling and testing Potential transformer capacity 11 KV / 110 volts AC and replacement of worn out spares such as contacts, bushing, control wiring fibre plates, gaskets , transformer oil and applying multi grease to the mechenical parts & dry graphite conductive sealant to contacts etc & re-assembling the same and commissioning complete all as specified and directed by Engineer-in-Charge. (Note : Spare parts and oil will be measured and paid seperately)

Testing of dielectric strength of transformer oil of indoor type transformer, 11KV/433 volt, filteration of transformer oil by passing through filtration plant to remove moisture, impurities and improving di-electic strength to above 40 KV for 1 minute including new transformer oil for toping up & testing after filtration complete as specified. (Note: Transformer oil will be measured & paid seperately.)

Supply only transformer oil with 50KV di-electric strength for topping up and replacement of old/burnt transformer oil complete all as specified. Make: Power /Asian/Savita/Electric.

Supply and fixing in repair of breather with 500 Grams celica gel of indoor type transformer 300KVA/400/500 KVA, all as specified and directed by Engineer-in-Charge.

Material and labour for Spray Painting of Transformer of following capacity, indoor type with two coats of synthetic enamel paint over a coat of red oxide primer after cleaning, scraping, and filling of cavities and all as specified and as directed.

Transformer 1500/1000KVA ,11KV/440Volt

Transformer 630/800KVA ,11KV/440Volt

Transformer 160KVA ,11KV/440Volt.

Material and labour for disconnecting of LT and HT cable carefully from Transformer and draining out transformer oil, dismantling transformer top cover and dismantling of 4Nos LT bushing and 3Nos of HT bushing including necessary tools and plant for attending leakage problem with replacement of oil seal, all gaskets, thermometer(oil temperature gauge) and reassembling complete all as directed.(Note : New Transformer oil and spare parts will be measured and paid separately excluding oil seal and thermometer i.e oil temperature gauge)

Transformer 1500/1000/800KVA ,11KV/440Volt

Transformer 300 to 650 KVA ,11KV/440Volt

Material and labour in repair of burnt out studs and bushing with nuts of any material by providing new copper alloy stud with nut,washers and bushing with oil seals on HT side all as directed for following capacity transformers:-

Transformer 1500/1000/800KVA ,11KV/440Volt

Transformer 300 to 650 KVA ,11KV/440Volt

Material and labour in repair for burnt out studs and bushing with nuts of any material by providing new copper alloy stud with nut,washers and bushing with oil seals on LT side all as directed for following capacity transformers:-

Transformer 1500/1000/800KVA ,11KV/440Volt

Transformer 300 to 650 KVA,11KV/440Volt

Supply and fix in repair of following spare parts suitable for Siemens/ABB/Schnieder make VCB, 11 KV , 630 amps indoor type complete all as specified and directed by Engineer-in-Charge.

(i) Opening / Closing Push Button Assembly

(ii) Motor Charding mechanism gear box

(iii) Limit Switches

(iv) Closing Coil Assembly

(v) Tripping Coil assembly

(vi) Spring Charging Motor

Auxiliary Switch with link

Spring return latch

Vaccum Interupter assembly

Spout Insulator assembly (3Phase) feeder side

Spout Insulator assembly (3Phase) Bus bar side

Potential Transformer,11KV/110Volt/Rout3,100VA burden Trolly mounted with HRC Fuse

Current Transformers,50-30,5+5Amps, Class1 and 5p10,15VA,18.3kA/3Sec

TNC Switch

PF meters digital type 96x96mm

Indicating Lamps LED type

Supply & fix in repair strip type heater 80watt with control wiring suitable for indoor VCB,11 KV switch gear Panel board complete all as specified and directed by Engr-in-Charge.

Dismantling Air Circuit Breaker 4pole/3pole, 630Amps to 1200Amps, 415 Volts, draw out/fixed type from location and repair /overhauling of spring drive mechanism, coil, auxiliary switch including setting of over load coil, no volt coil, tripping coil & apply multi grease for mechnical parts, cleaning and inspecting male and female contacts and apply dry graphite conductive sealant for contacts, checking of electrical wiring system, testing, and assembling all items/components parts to the respective position and testing complete all as specified and directed by Engineer-in-Charge.(Note : Spare parts will be measured and paid separately)

Material & Labour for repairs/ Overhauling/Servicing to Existing LT electric panels Indoor type of each Transformer by taking shut down from appropiate authority including checking loose connections and tight connection and cleaning inside/out side all connection, replacing all cable glands,thimbles and lugs as per the size of existing cable, applying petrolium jelly on the contactors, providing new insulation tape to bus bars, repair to broken /hanging doors by fixing hinges or welding the door to make it servicable, spray painting (silver colour) / powder coating and testing the entire panel board after the completion of servicing up to the satisfication of Engr-in-charge all as directd and specified. Note :- The tenders quoted rate per unit shall deemed to be inclusive of taking out burnt ACB/ MCB/MCCB/Voltmeter/ Ampiermeter/CT/LED lamps of any type and discription etc and refixing the same, which shall be measured and paid as supply only vide relivent items of this schedule (i) Cleaning inside the panel and all incoming and out going feeders i.e includinging MCCB/SFU/Changeover switches/Contactors/ ACB's thorouly with help of Vaccum Cleaner. (ii) Checking the loose connections of incoming and out going feeders and rectifify the same with help of new GI nut bolts and washers (iii) Replacing the burnt out color coated PVC Sleeve of main and fedders bus bar with appropriated size of New PVC heat shrinkable sleeves -01Job (iv) Replacing Burnt out Voltmeters/Ammeters/Indicating Lamps/Hrc Fuses.(Note: New items will be measured and paid separatly)-01Job (v) Replacing burnt out control wiring of Ammeter/Voltmeter/Indicating lamps and CT'swith 2.5/1.5Sqmm copper single core,1100V grade copper conductor cable- 01Job (vi) Replacing Burnt out Bus Bar of incomming and out going feededs with approprieted size of new bus bar (Copper/Aluminum) -01Job( Note : Bus Bar will measured and paid separately). (vi) Replacing Burnt out Insulators of incomming and out going feeders with approprieted size of new Insulators -01Job( Note : Insulators will measured and paid separately) (vii) Spray Painting of Panel Board with one coat of synthetic enamel paint.

Supply & fix Aluminium Bus Bar strips, of any size, for extention of MCCB terminals for cable terminations, inside the cable alley of LT panel board, duly supported on the FRP / DMC support insulators including necessary drilling / bending to obtain required shape and size complete all as specified and as directed . Note :- (a) Size of the strip shall be determined depending upon the current carrying capacity of the individual outgoing MCCBs. (b) Overall length of the strip shall be measured and paid after necessary conversion into weight. (c) Cost of drilling / bending / Grinding of the strips at site as required shall be included in the unit rate quoted. No extra payment shall be admissible on that account. (d) Rate of Bolts, Nuts etc shall be included in quoted rate.

Supply & fix Copper Bus Bar stips, of any size, for extention of MCCB terminals for cable terminations, inside the cable alley of LT panel board, duly supported on the FRP / DMC support insulators including necessary drilling / bending to obtain required shape and size complete all as specified and as directed . Note :- (a) Size of the strip shall be determined depending upon the current carrying capacity of the individual outgoing MCCBs. (b) Overall length of the strip shall be measured and paid after necessary conversion into weight. (c) Cost of drilling / bending / Grinding of the strips at site as required shall be included in the unit rate quoted. No extra payment shall be admissible on that account. (d) Rate of Bolts, Nuts etc shall be included in quoted rate.

Supply & fix of suitable type and size FRP / DMC bus bar support insulator (Bridge Insulator) for fixing the extended aluminium/copper bars, for cable terminations, duly fixed in the body of the panel board including galvanized steel bolts, nuts, washers etc.and necessary drillings, in the panel body, complete all as specified and as directed.

Material and labour for fault finding on HT cables of any size and any length with fault detective machine by thumbing method and suitable high voltage complete all as specified and as directed by Engineer-in-Charge.

Supply and fix cable jointing kit Straight Through Joint for 11KV grade cable complete with Jointing material (Heat shrinkable) and accessories suitable for 3 core XLPE armoured, alluminum conductor cable of size 90 to 185 sq mm complete all as specified and as directed by Engineer-in-Charge.

Supply and fix cable jointing kit, End Termination Joint indoor for 11KV grade cable complete with Jointing material (Heat shrinkable) and accessories suitable for 3 core XLPE armoured, alluminum conductor cable of size 95 to 185 sq mm complete all as specified and as directed by Engineer-in-Charge.

Supply and lay cable XLPE Insulated screened PVC bedded, galvanized steel strip or wire armored, electric power cables (heavy duty)11000 Volts grade with stranded aluminium conductor of size 185 Sqmm 3 core complete all as specified and as directed by Engineer-in-Charge.

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m depth in hard/dense soil for laying of cable/ GI pipe and getting out complete all as specified and directed.

Returning, filling in including spreading levelling watering well ramming in layers not exceeding 25cm each complete all as specified and directed.

Removing surplus soil to a distance outside MD land and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed.

Material and labour for dry clean river sand for cushioning of cable in trenches for cable protection including spreading, leveling and hand punning complete all as specified in SSR Part-I and as directed. Note :- Only compacted thickness of sand will be measured and paid separately.

Supplying and laying un-reinforced precast concrete cable cover, class HV Type I, flat, size 300 mm x 150 mm x 40 mm. laid in trenches complete all as specified and directed.

NOEL ENGINEERS

Veer High Tech Solution

DHARMESH ENTERPRISES