REPAIRS MAINTENANCE OF VOLTAGE STABILIZERS AIR COMPRESSORS OF DIFFERENT CAPACITIES AND ALLIED ITEMS AT AF STN NALIYA

Amount

Dehydration / Filtration of stabilizer oil of existing voltage stabilizers of 30 kVA to 300 kVA installed at various locations, with portable plant to improve the dielectric strength 40 to 60 kV during filling of oil after filtration, testing of dielectric strength after dehydration at site complete all as specified and as directed. Note: Contractor shall produce the oil tests showing oil test results before and after filtration

Supply & filling of oil in voltage stabilizer / transformer at site for topping up the level of oil having dielectric strength 40-60 kV after filtration complete all as specified and as directed.

S&F in repair electronic control circuit board for servo voltage stabilizer (PCBs) suitable for stabilizer of capacity up to 200 KVA complete all as specified and as directed.

S&F in repair servo motor for servo operation of capacity 3 to 10 Kg torque as per site requirement suitable for voltage stabilizer of capacity up to 300 kVA complete all as specified and as directed.

S&F in repairs drive assembly suitable for servo motors of voltage stabilizer upto 200KVA complete all as specified and as directed.

S&F in repair Trigger/Control transformer of suitable capacity for servo voltage stabilizer complete all as specified and as directed.

S&F in repair dimmer of suitable capacity for servo voltage stabilizer of capacity up to 200KVA complete all as specified and as directed.

S&F in repairs / replacement of LED indicator lamps of suitable capacity complete all as specified and as directed.

Transporting unserviceable voltage stabliser / air compressor / UPS control panel of any capacity by disconnecting electrical connections to local workshop for repair / rewinding and bringing back to work site after completion of repair. Note : (i) The cost of transporting veh, loading / unloading of plant is deemed to be inclusive in quoted rate. (ii) The cost of winding shall be measured and paid separately under relevant item.

Labour for opening of servo voltage stabilizer of any capacity at workshop or at sub station after disconnecting electric and earth connection, drain out oil and kept in closed container for reuse, removing of top cover of stabilizer, cleaning of spare parts and washed down with the help of spray of clean oil and reassembling the stabilizer after replacement of unserviceable parts refilling of oil after checking dielectric strength and connecting electric connections and testing complete all as specified and as directed. Note:- If oil of stabilizer found less than required quantity the same shall be filled with new oil and shall be measured and paid separately under relevant items.

M&L for rewinding old / burnt out coils by super enameled copper winding wire of appropriate size of superior quality (as per existing material & size of voltage stabilizer coils and reciprocating motor) including, insulating, varnishing, heating, and reassembling coils in position, etc for 315 KVA voltage stabilizer or motor complete all as specified and as directed.

Supply & fix top cover gasket made up of 5 mm thick cork sheet complete all as specified and as directed.

S&F in repairs drain gun metal gate valve 25mm dia as suitable for drain out oil from voltage stabilizer complete all as specified and as directed.

M&L for preparing old painted surface of voltage stabilizer outer surface / LT Panel board / Air compressor of any size and capacity by thoroughly cleaning the surfaces to remove dirt, dust, rust flakes and paint flakes, using wire brush or sand papers, damp cloth or as directed, priming the surface with anti corrosive primers using suitable sprayers,applying automotive paint using sprayers till glossy finish is obtained complete all as specified and as directed.

M&L for servicing air compressor by cleaning all external parts, disconnecting electric connection greasing all moving parts checking electric connection checking serviceability and reconnecting cable connection complete all as specified and as directed.

S&F in replacement DOL starter 7 to 10 HP as suitable at site complete all as speicified and as directed

M&L for repair / replacement of air pressure gauge as per existing pattern complete all as specified and as directed.

S&F in replacement of control circuit board suitable for 30KVA on line UPS as per site requirement complete all as specified and as directed.

Labour charges for inspecting of Voltage stablizer / UPS control panel / Air compressor by authorised person of OEM for maintenance and thoroughly checking all internal circuit wiring, If any minor part costing upto Rs 500/- shall be changed by contractor and major part/spares shall be measured and paid separately. Note: Any part costing beyond Rs 500/- required for repair shall be measured and paid separately under relevent item.

S&F in repairs lead Acid maintenance free batteries suitable for 30KVA UPS of 65Ah, 12 volt with connection etc. complete all as specified and as directed.

Shifting of Voltage stabilizer / LT Panel from one place to another place by disconnecting all electrical connections transporting though their own vehical and loading unloading etc complete all as specified and as directed. Note- The cost of the transporting vehical and crane is deemed to be included in unit rate quoted.

S&F in replacement of capacitor 25 KVAR box capacitor with inbuilt MCB and LED indication for APFC Panel including connecting in position complete all as specified and as directed. Make: L&T cat Part No. LTBCM325B2 / Legrend / Havells/ABB

S&F in replacement of power factor controller 8 steps / 8Relay output, 415volt, 3 CT, 5A with LED display including connection in APFC panel complete all as specified and as directed

M&L for welding work for weld the hinges of panel door, MS sheet 3mm thick inclding 02 Nos hinges and piece of 3mm thick sheet not more that 0.25 Sqm area of sheet complete all as specified and as directed.

Supply install and commissioning Automatic Power Factor Correction (APFC) Panel out door type for 3 Phase, 415 V & 50 Hz system of capacity 160 KVAR USR with incoming MCCBs including internal wiring and connections complete all as specified and directed

Supply, jointing and testing indoor type cable termination (heat shrinkable) suitable for 3 core, 11 KV / underground electric cable, XLPE cable of size 95 sqmm, extra terminal length as required on ground complete all as specified and as directed.

Supply, jointing and testing outdoor type cable termination (heat shrinkable) suitable for 3 core, 11 KV /underground electric cable, XLPE cable of size 95 sqmm, extra terminal length as required on ground complete all as specified and as directed.

Supply, jointing and testing of cable joint kit of 11 KV grade cable for straight through heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armored Aluminum conductor of size 95 sqmm, complete all as specified.

M&L earthing complete with copper earth plate electrode 600mmx600mmx3.15mm thick, thick buried directly in ground vertically to a depth not less than 2.25 mtr deep below GL with top edge of the plate not less than 1.50 mtr below normal GL and connected to earth plate, earth plate surrounded by 15 cm thick packed layers of charcoal dust and common salt all around the earth plate and connected to earth lead of copper strip 20x3 mm by means of bolts, nuts, check nuts and washers of GI or steel and thimbles and other end of the earth wire connected to DB and protected by 50mm dia galvanized iron or steel pipe light grade and 20mm dia water pipe GI medium grade with funnel and wire mesh, including all necessary excavation and earth work PCC chamber in cement concrete 1:3:6 type C-2 and RCC cover 40mm thick in 1:2:4 type B1 with 6mm rods for reinforcement @ 150mm c/c both ways and all as shown in electrical plate No 3 of MES schedule Pt I of 2009 and also including making test point for testing of earthing made out of gun metal or phosphorous bronze size 75x75x25 mm complete for DB and Industrial socket. Note : 1. Charcoal dust and common salt shall be filled in layers of 15cm all around the earth plate. 2. Copper strip shall be laid connected to test point through plinth protection necessary cost of repair to plinth protection and brazing and welding deemed to be included in the item. On completion the earth resistance test to be carried out. If desired value of resistance not obtained, the earthing will be re-done at no extra cost.

NILESH SUBHASH KARALE

NAVIN K LAKHANI