REPAIRS REPLACEMENT OF SPARES TO 11 KV SWITCH YARDS TRANSFORMER OVERHEAD LINES AND IMPROVEMENT OF HT UG CABLES AT RCI HYDEABAD

Amount

Supplying, laying, jointing, testing and commissioning 1100 volts grade, LT XLPE insulated of size 3.5 core 185 Sqmm, PVC sheathed as per IS-7098 (Part-I), 1988 with latest amendments, galvanized steel strip or wire armoured, heavy duty, electric cables, with multistranded aluminium conductor laid in trenches/ passing through pipe/duct/road crossing or fixed on poles, walls with suitable size clamps made out of mild steel flat iron including jointing material such as crimping type lugs, brass cable glands, heavy duty double compression type etc., including disconnecting and taking down unserviceable cable complete all as specified and as directed.

Supplying, laying, jointing, testing and commissioning 1100 volts grade, LT XLPE insulated of size 3.5 core 150 Sqmm, PVC sheathed as per IS-7098 (Part-I), 1988 with latest amendments, galvanized steel strip or wire armoured, heavy duty, electric cables, with multistranded aluminium conductor laid in trenches/ passing through pipe/duct/road crossing or fixed on poles, walls with suitable size clamps made out of mild steel flat iron including jointing material such as crimping type lugs, brass cable glands, heavy duty double compression type etc., including disconnecting and taking down unserviceable cable complete all as specified and as directed.

Supplying, laying, jointing, testing and commissioning 1100 volts grade, LT XLPE insulated of size 3.5 core 50 Sqmm, PVC sheathed as per IS-7098 (Part-I), 1988 with latest amendments, galvanized steel strip or wire armoured, heavy duty, electric cables, with multistranded aluminium conductor laid in trenches/ passing through pipe/duct/road crossing or fixed on poles, walls with suitable size clamps made out of mild steel flat iron including jointing material such as crimping type lugs, brass cable glands, heavy duty double compression type etc., including disconnecting and taking down unserviceable cable complete all as specified and as directed.

Supplying, laying, jointing, testing and commissioning 11000 volts grade, Earthed, HT XLPE insulated of size 3 core 120 Sqmm,, insulation screened with extruded semi-conducting compound in combination with copper tape (0.3 KA for one second), cores laid up, PVC inner sheath with fillers, galvanized steel flat strip armoured, heavy duty, electric cables, with multistranded aluminium conductor, conductor screen with extruded semi conducting compound and overall PVC sheathed cable as per IS-7098 (Part-2) 1988 with latest amendments, laid in trenches/ passing through pipe/duct/road crossing or fixed on poles, walls with suitable size clamps made out of mild steel flat iron including jointing material such as crimping type lugs, brass cable glands, heavy duty double compression type etc., including disconnecting and taking down unserviceable cable complete all as specified and as directed.

Supplying, laying, jointing, testing and commissioning 11000 volts grade, Earthed, HT XLPE insulated of size 3 core 95 Sqmm,, insulation screened with extruded semi-conducting compound in combination with copper tape (0.3 KA for one second), cores laid up, PVC inner sheath with fillers, galvanized steel flat strip armoured, heavy duty, electric cables, with multistranded aluminium conductor, conductor screen with extruded semi conducting compound and overall PVC sheathed cable as per IS-7098 (Part-2) 1988 with latest amendments, laid in trenches/ passing through pipe/duct/road crossing or fixed on poles, walls with suitable size clamps made out of mild steel flat iron including jointing material such as crimping type lugs, brass cable glands, heavy duty double compression type etc., including disconnecting and taking down unserviceable cable complete all as specified and as directed.

NOTE FOR ITEM Nos. 1 TO 5: Earthwork Excavation, sand cushioning, GI pipe for cable protection and cable covers will be measured and paid separately under relevant items of this BOQ.

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m depth and getting out in soft/loose soil complete all as specified and as directed.

Supply and spread M crushed sand free from clay clay filled in trenches for cable cushioning covering both top and bottom of cable and punned down complete all as specified and as directed. NOTE: Punned thickness will only be measured for the purpose of payment.

Supply and lay unreinforced pre-cast concrete cable cover class HV, type-I, flat size 300X180mmX40mm complete all as specified and as directed.

Supply and lay unreinforced pre-cast concrete cable cover class LV, type-I, flat size 250X180mmX40mm complete all as specified and as directed.

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

Removal of excavated soil to a distance not exceeding 50 mtrs and deposited where directed at a level not exceeding 1.5mtrs above the starting point complete all as specified and as directed.

Cutting of existing bituminious/PCC road or flooring/plinth protection, for laying of GI pipe in road intersection for passing of LT XLPE cable including excavation in any type of soil, returning and filling in and making good top 30cm of the trench by providing PCC 1:2:4 type B1 (using 20mm graded stone aggregate) to flush with existing road surface complete all as specified and as directed.

Supply and lay 150mm dia GI pipe light grade, laid in trenches, road crossing or fixed to walls/poles etc., for protection of underground cable/earth strip including sealing ends with hessian cloth impregnated with bituminous compound in ground and with teak wood bushes for ends fixed on walls/poles complete all as specified and as directed.

M&L for HT cable end joint, outdoor type (Heat shrinkable), 11 KV grade suitable for XLPE cables of size 3 core 120 Sqmm and testing after disconnecting and cutting down existing unserviceable /burnt out HT cable end joint complete all as specified and as directed. Make: RAYCHEM/ M-SEAL/ DENSON

M&L for HT cable end joint, indoor type (Heat shrinkable), 11 KV grade suitable for XLPE cables of size 3 core 120 Sqmm and testing after disconnecting and cutting down existing unserviceable /burnt out HT cable end joint complete all as specified and as directed. Make: RAYCHEM/ M-SEAL/ DENSON

M&L for HT cable end joint, outdoor type (Heat shrinkable), 11 KV grade suitable for XLPE cables of size 3 core 95 Sqmm and testing after disconnecting and cutting down existing unserviceable /burnt out HT cable end joints complete all as specified and as directed. Make: RAYCHEM/ M-SEAL/ DENSON

M&L for HT cable end joint, indoor type (Heat shrinkable), 11 KV grade suitable for XLPE cables of size 3 core 95 Sqmm and testing after disconnecting and cutting down existing unserviceable /burnt out HT cable end joints complete all as specified and as directed. Make: RAYCHEM/ M-SEAL/ DENSON

M&L for HT cable straight through joint (Heat shrinkable), 11 KV grade suitable for XLPE cables of size 3 core 120 Sqmm and testing after disconnecting and cutting down existing unserviceable /burnt out HT joint complete all as specified and as directed. Make: RAYCHEM/ M-SEAL/ DENSON

M&L for HT cable straight through joint (Heat shrinkable), 11 KV grade suitable for XLPE cables of size 3 core 95 Sqmm and testing after disconnecting and cutting down existing unserviceable /burnt out HT joint complete all as specified and as directed. Make: RAYCHEM/ M-SEAL/ DENSON

M&L for locating fault in 11 KV HT underground cable of any size with the help of fault locator vehicle organized from TSSPDCL/TSTRANSCO by injecting necessary high voltage to the faulty cable within 12 hours of time from time of reporting of fault complete all as specified and directed. NOTE: Quoted rate is deemed to include for necessary charges towards liaisoning for arranging fault locating vehicle, transportation of trained technicians and charges payable to Electricity Department.

Disconnecting and taking out LT ACB, draw out type of 630/800/1000 Amps capacity of make ABB/Merlin Gerinn/CROMPTON GREAVES/SIEMENS/L&T/GE/ C&S from the existing LT panel boards, overhauling the ACBs including cleaning of contacts, removing carbon deposits, conditioning of spring charge mechanism, taking down all defective acessories, repair/ replacement of earth fault release, over current release, trip coil, under voltage coil etc., repair/overhauling of draw out mechanism, greasing and lubricating all moving and fixed parts, removing dusts in the ACBs by means of air blowers including refixing and reconnecting the ACBs in the panel board and testing of ACBs for smooth functioning complete all as specified and as directed. NOTES: (i) Replacement of unserviceable spare parts will be measured and paid separately under relevant items of this BOQ as SUPPLY ONLY. (ii) Any other spare parts which are not covered in the relevant items but are required to make the ACB fully functional condition are deemed to be included in the unit rate quoted by the contractor.

Disconnecting and taking out LT ACB, draw out type of 1250/1600/2000/2500 Amps capacity of make ABB/Merlin Gerinn/CROMPTON GREAVES/SIEMENS/L&T/GE/ C&S from the existing LT panel boards, overhauling the ACBs including cleaning of contacts, removing carbon deposits, conditioning of spring charge mechanism, taking down all defective acessories, repair/ replacement of earth fault release, over current release, trip coil, under voltage coil etc., repair/overhauling of draw out mechanism, greasing and lubricating all moving and fixed parts, removing dusts in the ACBs by means of air blowers including refixing and reconnecting the ACBs in the panel board and testing of ACBs for smooth functioning complete all as specified and as directed. NOTES: (i) Replacement of unserviceable spare parts will be measured and paid separately under relevant items of this BOQ as SUPPLY ONLY. (ii) Any other spare parts which are not covered in the relevant items but are required to make the ACB fully functional condition are deemed to be included in the unit rate quoted by the contractor.

Supply only Shunt trip coil of any of the ratings 24-30 V DC / 110 V AC/DC / 240 V AC/DC / 415 V AC suitable for ACBs of capacities 630 Amps to 2500 Amps.

Supply only Closing coil of any of the ratings 24-30 V DC / 110 V AC/DC / 240 V AC/DC / 415 V AC suitable for ACBs of capacities 630 Amps to 2500 Amps.

Supply only Under Voltage trip device with time relay (0-1-3-5 sec) of any of the ratings 24-30 V DC / 110 V AC / 240V AC / 415 V AC suitable for ACBs of capacities 630 Amps to 2500 Amps.

Supply only ON/OFF buttons for ACBs of make ABB/Merlin Gerinn/CROMPTON GREAVES/ SIEMENS/ L&T/GE/ C&S of rating 630 Amps to 2500 Amps.

Supply only Spring charge induction switch for ACBs of make ABB/Merlin Gerinn/CROMPTON GREAVES/ SIEMENS/ L&T/GE/ C&S of rating 630 Amps to 2500 Amps all as directed.

Supply only Trip Induction switch in ACBs of make ABB/Merlin Gerinn/CROMPTON GREAVES/ SIEMENS/ L&T/GE/ C&S of rating 630 Amps to 2500 Amps all as directed.

Supply only Position Induction switch in ACBs of make ABB/Merlin Gerinn/ CROMPTON GREAVES/ SIEMENS/ L&T/GE/ C&S of capacities 630 Amps to 2500 Amps all as directed.

Supply only Draw out position lock in ACBs of make ABB/Merlin Gerinn/ CROMPTON GREAVES/ SIEMENS/ L&T/GE/ C&S of capacities 1000 Amps to 2000 Amps all as directed.

Supply only Charging Motors 110 Volt AC/DC or 220 Volt AC/DC suitable for 630 to 2500 Amp ACBs of make ABB/Merlin Gerinn/CROMPTON GREAVES/ SIEMENS/ L&T/GE/ C&S including connecting and testing complete all as directed.

Supply only six way Secondary Isolating contacts suitable for ACBs of capacity 630- 2500 amp of make ABB/Merlin Gerinn/CROMPTON GREAVES/ SIEMENS/ L&T/ GE/ C&S all as directed.

Supply only Moving arcing contacts suitable for ACBs of capacity 630- 2500 Amp of make ABB/Merlin Gerinn/CROMPTON GREAVES/ SIEMENS/ L&T/ GE/ C&S all as directed.

Supply only Auxilliary contacts (4 NO + 4 NC) suitable for ACBs of capacity 630- 2500 Amp of make ABB/Merlin Gerinn/CROMPTON GREAVES/ SIEMENS/ L&T/ GE/ C&S all as directed.

Supply only Safety shutter assembly suitable for ACBs of make ABB/Merlin Gerinn/CROMPTON GREAVES/ SIEMENS/ L&T/ GE/ C&S of capacities 630 Amp to 2500 Amp all as directed.

Supply only making LT/HT coil with insulated copper wire of required gauge craft paper cotton tape HT/LT insulation as per specification of old transformer complete all as specified and directed.

Disconnecting the electric supply, removing HT and LT cable connections and taking out the transformer of capacity 750 KVA from the platform, lifting the transformer with suitable crane, loading into the goods carrier and shifting the transformer to an approved factory (workshop) for carrying out repairs and transporting back after repairs, placing and installation in its original location including connecting of HT and LT cable complete all as specified and directed. NOTE: Repairs to tranformer and testing will be measured and paid for separately.

M&L for draining out transfomer oil ,removing the inspection cover , lifting the core with suitable crane and removing winding from the core replacing unserviceable insulation of LV coil, HV coil and rewinding the unserviceable HV, LV coil turns with new electrolytic copper conductor, drying of core and winding in oven upto required IR values, assembling the core with new insulation, replacing the unserviceable LT, HT bushing washers, oil seal gaskets of inspection cover with new ones, conducting all tests and commissioning completely all as directed by Engineer-in-Charge. NOTE: HT/LT bush, transformer oil, LV, HV coils, inspection cover gasket and testing of transformer will be measured and paid separately under relevant items of this BOQ as SUPPLY ONLY.

M&L for silica gel in breathers of transformers including removal of unserviceable silica gel complete all as specified and as directed.

Supply only inspection cover gasket, radiator gasket, HT Cable box gasket and LT Cable box gasket (all gaskets of grade SRC RC 70C) for Transformer of capacity 750KVA complete all as specified and as directed.

M&L for Conducting the following tests after carrying out repairs of transformer of 750 KVA including submitting the test report complete all as specified and as directed. (i) I.R values of HV to LV, HV to Earth and LV to Earth. (ii) Winding resistance. (iii) Ratio test (iv) No-load test (v) Short circuit test (vi) Di-electric strength of oil (vii) Transfomer tap switch positions NOTE: Contractor shall arrange all measuring instuments/equipment for testing of transformer.

M&L Glow sign board (Bakelite) showing details of sub station/AC plant equipment with letters of size 100mm on flexy (1500mmx1500mm) with vinyl digital cutting and pasting with suitable tube light fitting including chokes and electrical connections complete all as specified and as directed.

Supply and spreading 20mm graded stone aggregate in layers inside the substation switching yard including leveling and ramming complete all as specified and as directed.

Complete removal of existing paint from HT 4 pole structure and all connected MS structures and painting with two coats of aluminium paint over one coat of red oxide primer including marking the pole in white capital letters, painting the pole with black bituminous paint from ground level to a height of 1.5 mtr and making two Nos alternate colour yellow strip 300 mm high on black painted portion of the pole with yellow colour synthetic enamel paint at a height of 0.3 mtr and 0.9 mtr from ground level complete all as specified and directed. Make of paint : Asian/Berger/Nerolac/Shalimar

All as per Sl item No. 45 above, but painting to HT 2 pole structure

Complete removal of existing paint from HT MS electric pole and connected cross arms, pipe etc. and painting with two coats of aluminium paint over one coat of red oxide primer including marking the pole in white capital letters, painting the pole with black bituminous paint from ground level to a height of 1.5 mtr and making two Nos alternate yellow strip of 100 mm high on black painted portion of the pole with yellow colour synthetic enamel paint at a height of 1.2 mtr and 1.4 mtr from ground level complete all as specified and directed. Make of paint : Asian/Berger/Nerolac/Shalimar

Cutting and trimming of tree branches/ creepers to clear the HT over head lines at a clearance of 2 Mtr from both sides of conductors to clear the arc of HT over head line feeders including repairing and jointing of ACSR conductor if damaged during cutting of trees and removal of trimmed branches of trees complete all as specified and as directed.

Labour only for straightening of HT over head line (3 conductors) of ACSR conductor of any size and any span by disconnecting and removing from insulators including providing necessary binding wire and jumpering after proper stringing complete all as directed.

S&F Disc type insulator, porcelain, vitreous, 145 mm high and 255 mm dia ball and socket type, white, brown or green, single disc assembly for tension with tension clamps for conductors, working pressure 11000 volts grade including removal of old unserviceable one complete all as specified and directed. Make: OBLUM/JAIPURIA BROTHERS/JSI/LAMCO

S&F Pin type insulator, porcelain, vitreous, white, brown or green, including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height, 150 mm dia , working pressure 11000 volts grade complete all as specified and directed. Make: OBLUM/JAIPURIA BROTHERS/JSI/LAMCO

Disconnecting the electric supply and taking down the broken/ unserviceable post top insulator and S&F new post top porcelain/polymeric, vitreous brown insulator with GI clamps, nuts, bolts etc suitable for 11000 volts grade working pressure complete all as specified and directed. Make: OBLUM/JSI/JAIPURIA BROTHERS

M&L for Disconnection of conductor/ cable, unscrewing of bolts, nuts etc, taking out defective 11 KV Air break switch assembly from HT 2 pole/ 4 pole structures, scrubbing and cleaning dust/ carbon deposits from all GI/copper moving and fixed parts, cleaning the same with sand papers/clothes, greasing/lubricating the moving/ fixed linkage, necessary welding to MS structure/ GI tubings, refixing the same in position after supply and replacement of unserviceable bolts, nuts, washers of suitable size, replacement of defective moving and fixed contacts for proper operation of GOD and connecting back complete including testing and commissioning etc., complete all as specified and directed. Notes: (a) Spares to be replaced viz., fixed and movable contacts, aluminium jumpers etc., will be measured and paid separately as "SUPPLY ONLY" under relevant items of this BOQ. (b) The unit rate quoted is deemed to be inclusive of labour element for taking down and fixing of spares. (c) Replacement of all other items which are not covered in Note (a) above but are required to make the GOD in serviceable condition is deemed to be included in the quoted rate.

Supply only fixing (female) contact suitable for 11 KV, 200 Amps, horizontally operated gang operated device.

Supply and fixing moving (male) contact suitable for 11 KV, 200 Amps horizontally operated gang operated device.

Testing and calibration of 132KV EHV SF6 Circuit breaker panel protection relays of over current/ earth fault, tripping and closing circuits by primary and secondary injection method for their optimal tripping and closing performance including resetting of time wherever required including submission of test report by authroised agency approved by Electrical Inspectorate of Telangana State Electricity Board in duplicate complete all as directed. NOTE: Calibration and Measuring instruments required for calibration and testing has to be supplied by the contractor.

M&L for Disconnection of conductor/ cable, unscrewing of bolts, nuts etc., taking out defective 132 KV, 1600 Amps Air break switch isolator (Horizontal type) triple pole with earth (Two brake per pole) assembly from EHT pole structures, scrubbing dust/ carbon from all GI/copper moving and fixed parts, cleaning the same with sand papers/clothes, greasing/lubricating the moving/ fixed linkage, necessary welding to MS structure/ Alloy Aluminium tubings, refixing the same in position including supply and replacement of unserviceable bolts, nuts, washers of suitable size, replacement of defective moving and fixed contacts for proper operation of Air break Switch isolator including testing and commissioning etc. complete all as specified and as directed. NOTE: (i) Cost of Petroleum jelly, grease, CTC , nuts and bolts required are deemed to be included in the unit rate quoted.

M&L for overhauling of 1600 Amps SF6 circuit breaker (of make ABB/CG) of rated voltage 145 KV, rated short circuit current at 40 KA, 50 Hz, 3 Pole outdoor type spring operated mechanism complete all as specified and directed. NOTES: (i) Overhauling should be carried out through Authorised service center and should submit service report to department after completion of job without which no payment will be made. (ii) Any consumables and minor spares required for overhauling is deemed to be included in quoted rate.

Disconnecting electrical supply to 132/11 KV, 8 MVA transformer, conducting TAN delta and capacitance test EHV Bush by the authorised agency approved by Electrical Inspectorate of Telangana State Electricity Board and submitting the report in triplicate all as specified and directed. NOTE: Only after submission of reports duly verified by Engineer in charge, payment will be made.

Disconnecting electrical supply to 132/11 KV, 8 MVA current transformer, conducting TAN delta and capacitance test EHV Bush by the authorised agency approved by Electrical Inspectorate of Telangana State Electricity Board and submitting the report in triplicate all as specified and directed. NOTE: Only after submission of reports duly verified by Engineer in charge, payment will be made.

Supply and topping up transformer oil conforming to IS: 335(1993), dielectric strength not less than 60 KV at 2.5 mm gap in various capacities distribution transformers installed at various indoor and outdoor sub stations complete all as specified and directed. MAKE: POWER OIL/ SERVO/ CASTROL/ SHELL

Dehydration of transformer oil of various capacities of power and distribution transformers installed at various indoor and outdoor substations with ultra high vacuum filtration machine to obtain the dielectric strength of 60 KV at 2.5 mm gap including submitting necessary test report complete all as specified and directed.

Taking out the sample of transformer oil from 132/11 KV 8 MVA power transformer and conducting the DGA (Dissolved Gas Analysis), sludge and Aciditty test from power grid lab and submit the report complete all as specified and directed. NOTE: Only after submission of reports duly verified by Engineer in charge, payment will be made.

Material, labour and testing for overhauling of 132 KV SF6 1600 Amps Gas circuit breaker including replacement of unserviceable accessories completes all as specified and directed. The list of replacement of accessories as follows:-

(A) Spares for mechanism overhauling of 132 KV 3 Pole SF-6 Gas circuit breaker 120SFM 32B: (a) Motor 230V AC/DC(Type C-22) -01 No (b) Limit Switch(1NO+1NC) – 01 No (c) Motor Contactor 110 V/220 DC with Add on block -01 No (d) Closing Holding Latch – 01 No (e) Ratchet wheel assembly with black bolt, stop roller, bearing and bar pin – 01 No (f) Closing trigger with bearing – 01 No (g) Tripping trigger with bearing – 01 No (h) Small pawl with bearing – 01 No (i) Large pawl with bearing – 01 No (j) Eccentric shaft bearing (4906) front – 01 No (k) Eccentric shaft bearing (4904) rear – 01 No (l) Thrust bearing 4060 for black bolt – 02 No (m) Thrust washer for black bolt – 02 No (n) Bearing for closing spring rod – 01 No (o) Bush for closing spring rod – 01 No (p) Brass washer for black bolt – 01 No

(q) O-ring P12 – 6No (r) Berutox grease (Packet of 100 Grams) -01 Packet (s) Locktite (Tube of 20 ml) -01 Tube (t) Catch Spring – 01 No (u) Torsion spring (Right & Lift) -1Set (v) Muslin cloth – 06 M (w) 3 Bond compound – 01 Packet (x) Circlip, Grub screw, split pins – 01 set (y) Chemistic -02 Ltr (z) Emery Pad – 30 Nos (aa) Space heater 240 V /AC250 W -01 No (bb) Gas pressure Gauge – 1 No (B) Spares for Pole of 132 KV3 poles(40 KA) of SF-6 Gas circuit breaker type-120SFM 32 B: (a) ETNA seal set – 03 Set (b) O-ring P-105 -12 Nos (c) O-Ring G-240 -06 Nos (d) Absorbent – 03 Kg (e) Micro carbon Grease (Packet of 50 Grams) – 01 Packet (f) Anabond 680/silastic 1080 (Tube of 100 Grams each ) – 8 Tubes (g) Jointal-Z- 01 Pkt (1 Pkt=10grms) MAKE OF BREAKER: CROMPTON GREAVES

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