REPAIR, REPLACEMENT AND MAINTENANCE OF 11 KV UG CABLES, VCB, RMU PANELS, OCBs, 03 POLE / 04 POLE / HT STRUCTURE, MAINTENANCE OF TRANSFORMERS AND CONNECTED WORKS UNDER GE CHILKA

Amount

Excavation in trenches not exc 1.50 m wide and not exc. 1.5 m deep and getting out in soft / loose soil for taking out / laying cable pole & stay etc, and including taking out old precast concrete cover complete all as specified and directed

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

Removal excavated surplus soil to a distance not exc. 50 m and depositing where directed at a level not exc. 1.5 m above the starting point complete all as specified and directed.

M&L sand cushioning with clean and dry sand in trenches for protection of UG cable and including punning down complete all as specified and directed. Note:- Punned thickness shall only be measured and paid.

M&L un reinforced precast concrete cover class HV type 1, flat size 300 mm x 180 mm x 40 mm laid in trenches for cable protection complete all as specified and directed

All as per Sl. Item No. 5 above but laying only of any size. NOTE: Serviceable quantity obtained from Sl. Item No. 1 shall be reused under this item.

S&F 80 mm bore galvanised steel tubing, light grade with necessary fittings, fixed along electric pole etc, for cable protection complete all as specified and directed.

Taking down existing defective HT cable 3 core 185 sqmm from trenches / poles / drains/ under road including cable covers / GI protection pipe and necessary electric connections complete all as specified and directed

Laying only HT UG 11 KV XLPE cable of size 3 core 185 sqmm complete all as specified and directed NOTE: Serviceable quantity obtained from Sl. Item No. 8 shall be reused under this item

M&L in replacement of XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts earthed, grade cross sectional area 3 core 185 Sqmm complete all as specified and directed. Note:- Earth work, sand cushioning and precast concrete cover etc, shall be measured and paid separately under relevant items of BOQ.

M&L in replacement of cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed

M&L in replacement of cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed

M&L in replacement of pin type polymer insulator on HT 2 / 3 / 4 pole structures and including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height, 150 mm dia for 11000 volts grade complete all as specified and directed

M&L in replacement of disc type polymer insulator on HT 2 / 3 / 4 pole structures and including ball and socket type single disc assembly, 145 mm height and 255 mm dia for 11000 volts grade with necessary nuts, bolts, washers etc, complete all as specified and directed

Taking out trolley of vacuum circuit breaker 630 / 800 Amps, 11 KV from the cabinet and including opening top cover, de-carbonizing moving and fixed contacts if required, lubricating, inspecting the wiring of micro processor EF / OC relay, tripping coil electrical and checking for manual / auto tripping system and placing back the breaker trolley in its original position and checking of VCB panel HT cable connection, busbar connecton, replacement of worn out nut and bolts, checking / repairing internal wiring system complete all as specified and directed. Note:- Supply only spares will be measured and paid separately for replacement of unserviceable items except copper wire, nuts and bolts, CRC spray, grease and other cleaning materials which are covered under this item, but the labour element for fixing is included in the quoted rate. .

Supply only fixed / moving contact block copper suitable for 630 / 800 Amps, 11 KV HT VCBs complete all as specified and directed

Supply only mechanical castle interlock assembly with key suitable for HT 11 KV VCB of rating 630 Amps complete all as specified and directed

Supply only operating rod suitable for HT 11 KV VCB of rating 630 Amps complete all as specified and directed

Supply only VCB triping and closing coil assembly 230 volts AC / 24 volts DC complete all as specified and directed

Supply only spout bushing 11 KV for VCB complete all as specified and directed

Supply only HT 11 KV PT HRC Fuse complete all as specified and directed

Callibration of microproccessor E/F and O/C relay of VCB complete and calibrating with portable relay test kit to set time and fault level and adjustment of setting with according to load & time with main grid for proper functioning complete, all as specified and directed

Supply only Vaccum interruptor type WL-33379 (4 inch dia) suitable for HT VCB 630/800 Amps complete, all as specified and directed.

Supply only trip push button suitable for HT 11 KV OCB / VCB complete all as specified and directed

Supply only indicator lamp LED with holder (R/Y/B in colour) for HT VCB 11KV complete all as specified and directed

Supply only CT operated digital Amp meter 0 to 200 Amps flush pattern, square type suitable to mounted on existing HT panel complete all as specified and directed.

Supply only shunt trip coil 30 volts DC for HT VCB complete all as specified and directed.

Supply only charging gear assembly 110 Volts AC / 24V DC UMG-14 type complete all as specified and directed. Make : BIECCO LAWRIE / SEIMENS / ABB / L&T

S&F in replacment of power pack with battery backup 110V AC / 30V DC & connected to HT PT secondary circuit and including testing for triping complete all as specified and directed.

S&F in replacment of voltage transformer (PT) 3 phase, 3 limb indoor type primary voltage 11 KV and secondary voltage 110 volts, type VA class for HT VCB complete all as specified and directed

Supply only digital protective 3 phase over current and earth fault relay for HT 11 KV VCB / OCB panel with high set and RS-485 MC61C and including connection and testing on full load, complete all as specified and directed.

Supply only master trip relay suitable for working voltage 30 Volt DC and connecting the circuit with existing over current and earth fault relay complete all as specified and directed.

Supply only volt meter 0-15 KV PT operated anlog type of size 150 mm x 150 mm meter suitable to mount on existing HT panel. complete all as specified and directed.

Supply only maintenance free fully charged nickle cadmium battery 60 Ah, 2 volts complete, all as specified and directed

Supply only pinion of big size and including bearing as per existing suitable for 630 / 800 Amps complete all as specified and directed.

Supply only pinion of small size and including bearing as per existing suitable for 630 / 800 Amps complete all as specified and directed

Supply only 24 pin auxilary plug and socket assembly connector block suitable for 630 / 800 Amp VCB complete all as specified and directed

Supply only tulip contact assembly with complete housing and including 4 springs and tulip contacts of 36 Nos. suitable for 630 / 800 Amp VCB complete all as specified and directed.

Supply only thermostate for 11 KV VCB heating element with temparature range from 0-100 degree centigrade, 15A 240 / 250 V AC supply suitable for 630 / 800 Amp VCB complete all as specified and directed

Supply only heating element, 100 watts, 15A, 240/250 V, AC supply suitable for 630/800 Amp VCB / RMU panel complete, all as specified and directed

S&F in replacement of current transformer (CT) 3 phase, 3 limb indoor type suitable for 11 KV HT VCB and including necessary connecting materials complete all as specified and directed.

Supply only CT housing for connecting to current transformer (CT) to VCB panel 3 phase, 3 limb indoor type and including necessary connecting materials i.e. busbar, nuts, bolts etc, complete all as specified and directed

Opening the front and rear cabinet of the RMU panel 3 way / 4 way / 5 way 630 / 800 Amps 11 KV de-carbonizing moving and fixed contacts if required and including lubricating, checking the pressure of SF-6 gas, inspecting the wiring of micro processor EF / OC relay, tripping coil electrical and checking for manual / auto tripping system, checking cable in and out position, replacing unserviceable nuts , bolts, cleaning the entire panel and placing the SF-6 VCB and isolating unit in its original position complete all as specified and directed. Notes:- (i) Spares will be measured and paid seperately. (ii) The quoted rate is deemed to be included for copper wire, nuts and bolts, CRC spray, grease and other cleaning materials.

Supply only plug in type voltage presence indicator system (VPIS) type WIM for 11 KV RMU complete all as specified and directed

Supply only SF-6 ring main unit fuse 11 KV by opening fuse canisters of RMU positioned behind interlocking cover complete all as specified and as directed

Supply only terminal contact piece with silicone coupling for SF-6 ring main unit 11 KV by opening the terminal cover complete all as specified and directed

Supply only trifurcation boot 11 KV capacity for cable termination joint of RMU incoming and outgoing terminals complete all as specified and directed

Supply only HT bushing with gaskit for SF-6 Ring main unit 11 KV complete all as specified and directed

M&L callibration of microproccessor E/F and O/C relay of RMU complete and including calibrating with portable relay test kit to set time and fault level and adjustment of setting with according to load & time with main tech area power house and including replacement of relay battery for proper functioning complete all as specified and directed.

S&F in replacement of earth fault protection and indicator relay for ring main unit and including callibrating the relay with existing load and tripping timming complete all as specified and directed

S&F in replacement of voltage transformer (PT) 3 phase, 3 limb indoor type primary voltage 11 KV and secondary voltage 110 volts type VA class complete all as specified and directed

S&F in replacement of PT bush housing for connecting to voltage transformer (PT) to RMU panel 3 phase, 3 limb indoor type and including necessary connecting materials i.e. bus bar, nuts and bolts etc, complete all as specified and directed.

Disconnecting HT / LT sides of defective transformer indoor / outdoor installed on 2 / 4 pole structure / PCC foundation of any capacity up to 400 KVA and including draining of transformer oil, opening of top cover and removal of all HT / LT winding connections from bushing and then lifting of core by means of tripod and chain pulley carefully and inspection and ascertain it’s serviceability state after keeping it aside. Removal of all sludge and unwanted material from tank and core, lowering of core assembly after carrying out required repairs to the winding and core complete all as specified and directed. Notes:- The following items will be measured and paid separately under relevant items of the BOQ:- (i) If the repairs which are not possible at site then the transformer has to be taken to the work shop. (ii) Rewinding of HT / LT coils / dehydration / filtration / transformer oil toping up / replacement of any spares / parts required for making transformer serviceable.

M&L in replacement of worn out HT copper coils (limb) made out of super enameled insulated copper wire all as per existing size and shape and including all insulating, requisite insulating paper / material in each layer of binding, varnishing and baking in vacuum furnace complete all as specified and directed

M&L in replacement of worn out LT copper coils made out of super enameled insulated copper strip all as per existing size and shape and including all insulating, binding, varnishing and baking in vacuum furnace complete all as specified and directed

M&L in replacement of worn out bushing rod made out of copper / brass with heavy duty double nuts and one washer at both ends suitable for HT side all as exiting size, shape and length suitable for transformers of capacity up to 400 KVA complete all as specified and directed.

M&L in replacement of worn out bushing rod made out of copper / brass with heavy duty double nuts and one washer at both ends suitable for LT side all as exiting size, shape and length suitable for transformers of capacity up to 400 KVA complete all as specified and directed

Disconnecting HT / LT sides of defective transformer indoor / outdoor installed PCC foundation of any capacity up to 400 KVA and including drainage of transformer oil upto bushing opening of top cover and find out leakage / sepage of transformer oil from body / fins and carrying out required repairs such as replacement of top gasket, HT / LT bushing, bushing gaskets / tap changer and refillig the transformer oil after repair complete all as specified and directed. Note :- Cost of bushing, top cover gasket and tap changer will be measured and paid separately under relevant items of BOQ.

M&L in replacement of worn out rubberized cork sheet 4 mm thick for transformer top cover suitable for transformers of capacity up to 400 KVA complete all as specified and directed.

Dehydration / filtration of transformer oil by means centrifuging machine electrically operated to remove moisture and chemical contains of oil at site of installation of transformer in running condition and including testing of transformer oil before and after filtration by means of oil testing machine, keeping the electrodes at 2.5 mm gap and to achieve die electric strength of filtered oil 55 KV and above complete all as specified and directed.

Transportation of transformer of capacity up to 400 KVA to workshop (as approved by GE) from site of installation for repairs and including loading and unloading of transformer, and reinstalled the transformer at site from where it was taken for repairs including connecting all HT/LT connections complete all as specified and directed

Supply and topping up / replaced of transformer oil conforming to IS : 335 and with stand dielectric strength of 60 KV (when tested with 2.5 Gap electrode) in transformer complete all as specified and directed

M&L preparation of old exposed surfaces of transformer of capacity 100 to 400 KVA including fins / radiators and removal of all rust / oil / grease and unwanted material and including applying painting with synthetic enamel paint using spray gun and writing letters of SM No. & capaity of transformer complete all as specified and directed

M&L in replacement of breather with silica gel all as per existing suitable for transformers of capacity 100 to 400 KVA. complete all as specified and directed

M&L in replacement of load tap changer set and connecting with existing windig to match the ratio of tap position as per existing suitable for transformers of capacity 100 to 400 KVA complete all as specified and directed

M&L in replacement of oil temperature gauge suitable for any type of transformers as per existing complete all as specified and directed

S&F in replacement of tripple pole mechanically operated mounted on insulators and steel frame with operating mechanism worked from ground level, switch air break gang operated for current rating 200 Amps 11 KV suitable for vertical / horizontal operation complete all as specified and directed

S&F in replacement drop out fuse assembly mounted on insulators and steel frame, horizontal / vertical type HT 11 KV lines and including connections etc, complete all as specified and directed

M&L earthing complete with galvanized iron earth plate electrode of size 600 x 600 x 6 mm thick buried directly in ground earth pit not less than 2.25 m deep below normal ground level, with top edge of earth plate not less than 1.5 m below normal ground level, connected to galvanised earth lead wire 4.0 mm dia by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point complete all as specified and directed. Note:- The unit rate shall also include for earth work in any type of soil, PCC 1:3:6 type C1 chamber, RCC 1:1.5:3, type A1 cover slab, 50 mm thick reinforced with 8 mm dia TMT bar @ 140 mm C/C both ways, 10 mm dia plain bar lifting handle embedded in cover slab, 20 mm bore medium grade GI watering pipe, 40 mm bore GI light grade earth lead protection pipe, funnel, wire mesh, copper lugs, charcoal and common salt in alternate layer etc.

S&F in replacement for cross arms, bracings, supports, clamp and black plates of any sizes with drilled hole (hot and cold etc,) in position MS work and including necessary MS nuts, bolts, washers and applying two coats of aluminium paint over a coat of red oxide primer complete all as specified and directed

S&F in replacement anti-climbing devices comprising 2.24 mm dia galvanised steel 2-strand barbed wire with 2.00 mm dia barbs wrapped spirally round poles to a length of 0.5 to 1.0 m clamped and properly secured or as ordered complete all as specified and directed.

Taking down all electric connection to insulator, PG clamp ,jumpers (means tighed in nuts and bolts each accessories for smooth fuctions of HT supply) in 2 / 3 / 4 / 6 pole HT 11 KV structures, overhauling of GOB switch and DO fuse assembly on 2 / 3 / 4 pole HT 11 KV structures and including replacing fuse wire, binding wire, greasing after applying CRC, replacing worn out nuts / bolts, burnout jumbers, PG clamps and reconnecting all accessoris in existing position and greasing after applying CRC for smooth operation complete all as specified and directed.

Lopping / prooning of tree branches upto the extend to obtain clearance all around the substation 2 / 3 / 4 / 6 pole structure and transformer / RMU Panel upto 3 m from furthest on pole and including removing of cut branches and cleaning of site complete all as specified and directed. Note :- (a). The trees branches etc, will be left as it is and will not be carried away by the contractor (b). Prooning of all tree branches in one tree shall be measured as one Job. (c). Contractor will employ sufficient labour to complete the job with in time . (d). Contractor will be responsible for any type of mis-happening / accident while prooning the trees and shall provide necesary tools and safety devices to all workers.. (e). Contractor supervisor will take proper shut down from MES installation before starting the work and clear it before resuming power supply .

M/S SRI VENKATA BHAVANI CONSTRUCTIONS