Repair replacement of HT panels cables joints kits along with transformer oil filtration at AF Stn Suryalanka

Amount

SCHEDULE 'A'

M&L for Servicing/ Health Check for 11 KV SF6/ Vacuum Circuit Breaker, Ring Main Unit, Load Break Switches etc. as Physical Operation check with Interlocks, Provide Lubrication as required, Check Tightness of contacts and etc. problem rectification complete including minor parts like nuts, bolts and washers, wiring as required complete all as specified and directed. Make of HT RMU panel is ABB (Minimum - 2 To Maximum - 4 Feeders per Panel)

M&L for overhauling, checking of wiring system, replacement of minor defective spare parts, setting of tripping plugs according to the load, carrying out Complete checking like Insulation Resistance Test, Calibration with Secondary Current Injection Test, Setting, Relay and Control Circuit Test, CT Ratio check, for 3 Phase, 11 kV, 50 Hz, VCB based Panel for each way /circuit and submitting test report, tripping of system as per setting, complete all as specified and as directed.

S&F in replacement of 90 degree lug boot for HT terminals on each phase for protection of the HT terminals from moisture/dust etc complete all as specified and as directed.

M&L for replacement of Self powered numeric relay for accurate tripping system and closing any opening of panel with necessary sheet and fixing, setting the relay for desired valves and testing on completion complete all as specified and directed.

M&L for replacement of tripping coil in exisitng 11 kV, HT VCB based RMU Panel with new tripping coil of same specifications and testing complete all as sepecified and as directed.

M&L in replacement of induction type CT over HT Cable of rating 40/1 Amps, Class 1, SP10, with burden 15kA as per existing model in ABB HT RMU Panel complete all as specified and as directed.

M& L for Dehydration/ Filtration of transformer of capacity 63 kVA to 250 kVA installed at site with portable plant to improve the dielectric strength 50 to 60 kV during filling of oil, after intial filtraction, including testing of dielectric strength after dehydration at site. Note: i)contractor shall produce the transformer oil tests showing oil test results before and after filteration consisting of transformer details all as directed. ii) Test Report to be produced for payment. iii) The quoted rate is inclusive of arranging supply to portable plant, DG set, cable of suitable size etc required for operation of filtration equipments.

Supply & filling of transformer oil in transformer / voltage stabilizer in situ/ at site for topping up the level of oil having dielectric strength 40-60 kV during filling after initial filtraction conforming to IS-335 complete all as specified and directed. Note: transformer oil shall be supplied in sealed container.

M&L for shifting of transformer from MES substation to Workshop (located at vijayawada) exc 90 km and n.exc 120 km by hiring separate vehicle for repairs and shfiting of transformer back to MES Substation, along with hiring of crane for loading and unloading of transformer, removing of electrical connection of HT/LT complete all as specified and as directed.

M&L in replacment of burnt HT and LT winding coils in one phase with copper coils of same guage as existing, along with complete insulation over HT and LT coils as per standard specifications and refixing the same in transformer complete all as specified and as directed.

M&L for preparation of old painted surface of transformer of any make and capacity upto 250 kVA by cleaning, rubbing and scrapping the rusted surface to remove oil and dust etc and applying two coat of synthetic enamel paint of exisiting colour by spray paint machine by covering orginal name plate and other marking plates, complete all as sepecified and as directed.

M&L for breather container with silica Gel of suitable size for 11 kV / 433V distribution transformer of capacity upto 250 kVA of size 500 grms complete all as speicifed and as directed.

M&L for silica Gel Crystal type suitable size for 11 kV/433V distribution transformer complete all as speicifed and as directed.

Supply and fixing of aluminium conductor of size 50 sqmm with insulated coloured sleeve and aluminium lugs on both sides of length 1.5 mtr connected to GOD / Drop out fuse on each phase on two pole structure complete all as specified and 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 reqired on ground 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 reqired on ground complete all as specified and directed. .

S&L XLPE insulated, 11 kV, 95 Sqmm,3 Core screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with aluminium conductor complete all as specified and as directed.

S&F in replacement air break, Gang Operated Device, 11 kV, 200 Amps rated, Triple pole, mechanically operated, mounted on 'C' Channel frame, made up of proceline insulators 06 fixed and 03 movable, with operating mechanism working from ground level with pipe and handle along with locking provision complete all as specified and as directed.

S&F of lightning arrester high tension of 11000 V grade expulsion type complete with all fittings, transmission class, discharge capacity 65KA including taking down of old and provn / connecting GI earth wire of 4 mm dia to exiting earth pit complete all as specified and directed.

M&L Expulsion fuse single pole 11000 volts up to 100 Amps along with fuse wire complete all as specified and directed including taking out U/S one complete all as specified and directed.

M&L for carrying out periodical maintenance two pole structure of 11 KV distribution system including replacing of damaged / rusted bolt, nuts, greasing to all moving parts of GOD/ AB switch, tightening of all loose bolts, applying petroleum gelly to AB switch contact. Checking and tightening of earth connections, tightening of bracket, clamps, etc complete all as specified and directed.

Supply and fixing of Seven step Tap Changer including taking down of burnt out tap changer for transformer of rating 100 kVA to 250 kVA complete all as specified and directed.

M&L for Overhauling of Tap Changer and replacement of necessary spare parts and making the tap switch functional complete all as specified and directed.

M&L for cleaning of substation/ compliant cell area including Bush cutting, by using machines/ manual method and removal of bushes from site to a distance n.exc 50 mtr complete all as specified and as directed.

M&L for removal of aggregate / hardcore upto a depth of 15 cm ground level without distrubing any concrete foundations/footings and relaying the same aggregate in equal level complete all as specified and as directed.

S&F HT Barrel Fuse of 16 Amps rated, Striker Pin of 80 N (Medium) of length not less than 50 cm male type complete all as specified and as directed. Note: New Fuse unit is as per old exisiting fuse unit at site.

S & F in repair IC Based Electronic circuit board for servo voltage stabilizer (PCB) of capacity up to 150 KVA

S & F in repair servo motor for servo operation of capacity 3 Kg torque. Make as per exisiting up to 150 kVA

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 Micro switch as per exisiting make and model for servo voltage stabilizer

S&F in repiar RC Filter for Voltage stabilizer complete all as specified and as directed.

S&F in repair Ammeter / Voltmeter analog type for a stabilizer of rating upto 150 kVA and for LT Panels complete all as specified and as directed.

M&L for servicing of servo voltage stabilizer by tightning of all connections, etc and incl spare parts required in additonal to mentioned below for health operation of servo voltage stabilizer like nuts, bolts, washers, screws, joint material etc of capacity upto 150 kVA complete all as specified and as directed.

M&L for finding HT Cable fault by using fault locator for repair/ replacement of fault piece of cable complete all as specified and directed.

Supply, jointing and testing Straight through type cable joint (heat shrinkable) suitable for 3 core, 11 KV /underground electric cable, XLPE cable of size 95 sqmm, complete all as specified and directed.

Excavation in trenches,in soft/loose soil not exceeding 1.5 m deep and not exceeding 1.5 m in wide for laying of cable,RCC Poles/stays and struts etc and getting out including trimming sides and forming bottom surface all as specified and as directed.

Returning, filling-in, including spreading, watering and well ramming in layers not exceeding 25 cm thick each, in soft /loose soil complete all as specified.

Removing excavated material n exc. 50m and depositing where directed at a level n exc. 1.5 m above the starting point soft soil complete all as specified and as directed.

M & L for sand cushioning to underground cable including punning down of sand in layer complete all as specified and directed. Note :- Punned down thickness shall be measured for payment

M&L for laying common burnt bricks, sub class 'B', of size 230 x 115 x 75 mm in trenches for cable protection complete all as specified and as directed.

Total of Schedule 'A'

Aavani BUILDERS AND CONTRACTORS