REPAIR/ MAINTENANCE OF DISTRIBUTION OF TRANSFORMER, HT 11 KV RMUs, LBS, 4 POLE STRUCTURE, CERTAIN DIVERSION OF UNDERGROUND CABLE AND OTHER CONNECTED WORKS AT INA EZHIMALA

S&F in repair self power protection relay, 220 V having 400 A current capacity, 4 poles suitable for fixing in RMU and CSS having digital type screen complete all as specified and as directed.

S&F in replacement 3 phase digital Multi function meter 440 V with energy standard : IEC62053-22 CLASS 0.5 s FOR ACTIVE ENERGY AND IEC 62053-23 CLASS 1.0 for reactive energy suitable for fixing in RMU/CSS with complete wiring system all as specified and as directed.

S&F in replacement of 12V battery, 12 AH, 10.5 V and boost charging voltage 14.0 V per bloc @25 degree C suitable for charging the RMU including necessary wiring as required and as directed.

S&F in replacement battery charger suitable for existing RMU for 12V battery including all wiring connection for smooth functioning of RMU complete all as specified and as directed.

Supplying, installation, commissioning and testing in replacement of 11 KV Current Transformer (CT's), Indoor type, resin cast epoxy type, of 13.1 KA/Sec having ratio 200/1-1 Amps, Core 1: Class 5P10, 10VA for protection, Core 2: Class 0.5, 10VA for metering including associated wiring complete all as specified and as directed.

Supplying, installation, commissioning and testing in replacement of 11 KV Potential Transformer (PT's), Indoor type, resin cast epoxy type, of 13.1 KA/Sec 11Kv/110v having Core1: Class 5P10, 10VA for protection, Core2: Class 0.5, 10VA for metering including associated wiring complete all as specified and as directed.

S&F in replacement, drive link assembly with Adjustor as per existing size, type and suitable for 11 KV RMU all as specified and as directed.

S&F in repair Auxiliary Switch (7NO+7NC) as per existing size, type and suitable for 11 KV RMU including taking down old item all as specified and as directed.

S&F in repair Closing Coil Assembly as per existing size, type and suitable for 11 KV RMU including taking down old item all as specified and as directed.

S&F in repair Tripping Coil Assembly as per existing size, type and suitable for 11 KV RMU including taking down old item all as specified and as directed.

S&F in repair Spout Bushing with current carrying parts (Contract Plug) Upper/ lower 400 to 630 A as per existing size, type and suitale for 11 KV RMU including taking down old item all as specified and as directed.

S&F in repair Spring Charging Handle as per existing size, type and suitable for 11 KV VCB including taking down old item all as specified and as directed.

S&F in repair Space heater as per existing size, type and suitable for 11 KV VCB including taking down old item all as specified and as directed.

S&F in repair HT/LT cable route marker 900 mm long stand with top of oval/ square shaped, two sides engraved with letters HT/LT cable letter painted with approved paints, embedded in ground including necessary PCC, excavation and earthwork complete all as specified and as directed.

De-hydration/ filteration of transformer oil by employing on line filtration plant to achieve di-electric strength not less than 45 KV including following work services and all as directed :- (a) Removal of all suspended particles such as dust, rust, scales, collided Carbone oxidation sludge, etc upto < 1 microne (b) De-hydration of transformer oil under vacuum (c) Circulation of heated oil and filling of treated oil in transformer tank (d) Top up the transformer oil of same grade upto the level required complete all as specifed and as directed. Note : (i) Contractor shall be used the vehicle mounted filtration plant with suitable size heavy duty hose pipe (ii) The transformer oil required for replacing/ top up shall be measured and paid separately. (iii) Contractor shall conduct field testing of di-electric strengh of the transformer oil before and after filtration (iv) Checking the megger/earth resistance values with battery operated megger of 5 KV.

Tracing out fault in 11 KV underground cable of any size with the help of fault tracing machine and rectifying the same with jointing kits as specified and directed to restore the supply complete all as directed. Note : (i) Jointing kit, Earth work, cable protection cover, GI Pipe, HT cable. etc if any needed shall be measured and paid separetely. however, width of trenches shall be allowed for payment as per authorized width given in SSR for each size of cable. (ii) All other encessary arrangements suitable for locating the faults deemed to be included in the unit rate quoted. (iii) T&P required for the entire job shall be provided by the contractor at his own end and nothing extra shall be admissible on this account. (iv) Fault & location thereof shall be traced within 12 hours of tele intimation by the Engineer-in-Charge/JE E&M and shall be rectified within given time frame (v) After 12 Hrs a penality of Rs. 2000.00 per 3 hr shall be imposed upto 24 hrs then after a penalty of Rs. 6000.00 shall be imposed per day.

M&L for servicing, rectifying and arresting the oil leakage of oil cooled transformer, 11000 Volt / 433 V step down/Step up, indoor/out door type of capacity upto 100 KVA comprising following work services all as directed :- (a) Disconnection of cable termination of HT & LT ends. (b) Opening of top cover by removing nuts, bolts and all mounting accessories and conservator tanks. (c) checking of HT/LT insulators including any oil leakage and internal inspection for any leakage, draining out of oil up to the bottom level of transformer, opening of HV and LV bushings of transformer, replacing the all mounting gaskets of the transformer body and conservator to arrest the oil leakage and replacement of gasket HT/LT terminal bushing gasket/ bushing and rectifying oil leakage (d) Replacement of corroded nuts/bolts with double washers, burned lugs, etc by new one (e) Servicing of tap changing gears by cleaning and polishing tapping contact points. (f) Removing, cleaning, polishing of bushings and studs of both HT/LT side by using soft cotton cloth including checking for cracking and refixing the same. (g) Refixing all cable terminals HV & LV sides and transformer top cover, conservator tank and other fitments in position..

All as per item No. 18 here in above but of capacity above 100KVA upto 250 KVA all as directed.

All as per item No. 18 here in above but of capacity above 250KVA upto 500 KVA all as directed.

All as per item No. 18 here in above but of capacity above 500KVA upto 1000 KVA all as directed.

All as per item No. 18 here in above but of capacity above 1000KVA upto 1600 KVA all as directed.

Supply only Transformer oil having die electric strength not less than 45KV.

Supply only silica gel of superior quality for air breather of transformer.

Supply only breathing assy for Transformer with new silica gel 250 gm as per existing make and type complete as specified and as directed by Engineer-in-charge.

Supply only breathing assy of Transformer with new silica gel 500 gm as per existing make and type as specified and as directed by Engineer-in-charge.

Supply only breathing assy of Transformer with new silica gel 1000 gm as per existing make and type as specified and as directed by Engineer-in-charge.

Supply only brass terminal stud with nuts, check nut, oil seal and washer for HT side of transformer of any make as per sample up to 400 KVA transformer as specified and as directed by Engineer-in-charge.

Supply only brass terminal stud with nuts, check nut, oil seal and washer for HT side of transformer as per sample from 500 KVA to 1000 KVA transformer as specified and as directed by Engineer-in-charge.

Supply only brass terminal stud with nuts, check nut, oil seal and washer for LT side of transformer of any make as per sample up to 400 KVA transformer as specified and as directed by Engineer-in-charge.

Supply only brass terminal stud with nuts, check nut, oil seal and washer for LT side of transformer of any make as per sample from 500 KVA to 1000 KVA transformer as specified and as directed by Engineer-in-charge.

Supply only bushing of HT side as per existing size/Model of the capacity up to 400 KVA transformer as specified and as directed by Engineer-in-charge.

Supply only bushing of HT side as per existing size/Model of the capacity 500 KVA to 1000 KVA transformer as specified and as directed by Engineer-in-charge.

Supply only bushing of LT side as per existing size/Model of the capacity up to 400 KVA transformer as specified and as directed by Engineer-in-charge.

Supply only bushing of LT side as per existing size/Model of the capacity 500 KVA to 1000 KVA transformer as specified and as directed by Engineer-in-charge.

Supply and fixing transformer oil temperature gauge, range shall be 0 to 120 degree Celcious as per existing type and model including taking down old one all complete as specified and as directed by Engineer-in-charge.

Excavation in trenches not exc.1.5 Mtr in width and not exc. 1.5 Mtr in depth for laying of cables and getting out in hard/dense soil etc complete all as specified and directed.

Excavation in trenches not exceeding 1.5 m in width and depth exc 1.5m but n exc 3m and getting out in hard and dense soil complete all as specified and as directed by Engineer-in-Charge. Note for item 37 & 38 :- a) Prior approval of station HQ is to be obtained to avoid damages of other co-existing utility services b) The excavation shall be done manually.

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

Removing excavated materials to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above the starting point complete all as specified and as directed.

Supplying and spreading, compacting riddled earth for cushioning and covering of the UG cable in trenches complete all as specified and as directed by Engineer-in-Charge.

Supply and laying Precast unreinforced Concrete cable covers Class HV, type 1 flat of size 300 mm x 180 mm x 40 mm for HT cable all as specefied and as directed by Engineer-in -Charge.

Supply, laying and testing XLPE insulated, armoured 11000 Volts grade, aluminium conductor cable, Cross sectional area 95 sq mm, 3 core, as per IS-7098 (Part-II), in trenches or fixed to wall /passing through pipe / pole complete all as specified and as directed by Engineer-in -Charge.

All as per item No. 44.00 here in before but cable of cross sectional area 300 sqmm, 3 core complete all as specified and as directed by Engineer-in-Charge. Note for item No 44 & 45 :- (i) Excavation and earth work, Concrete cover protectioin and sand cushining shall be measured and paid for separately.

M&L cable jointing kit 11 KV, earthed, straight through joint heat, shrinkable type complete with jointing materials and accessories suitable for 3 core, 95 sq mm, XLPE 11 KV armourd aluminium contucotor complete all as specified and directed.

All as per item No. 46.00 here in before but for cable of cross sectional area 120 sqmm to 185 sq mm, 3 core complete all as specified and as directed by Engineer-in-Charge.

All as per item No. 46.00 here in before but for cable of cross sectional area 240 sqmm to 400 sq mm , 3 core complete all as specified and as directed by Engineer-in-Charge.

M&L End termination joint (Indoor type) heat shrinkable HT 11000 volts grade (Earthed) of cable Cross sectional area 95 Sqmm, 3 core complete all as specified and as directed by Engineer-in-Charge.

All as per item No. 49.00 here in before but for cable of cross sectional area 120 to 185 sqmm, 3 core complete all as specified and as directed by Engineer-in-Charge.

All as per item No. 49.00 here in before but for cable of cross sectional area 240 to 400 sqmm, 3 core complete all as specified and as directed by Engineer-in-Charge.

M&L End termination joint (Outdoor type) heat shrinkable HT 11000 volts grade (Earthed) of cable Cross sectional area 95 Sqmm, 3 core complete all as specified and as directed by Engineer-in-Charge.

All as per item No. 52.00 here in before but for cable of cross sectional area 120 to 185 sqmm, 3 core complete all as specified and as directed by Engineer-in-Charge.

All as per item No. 52.00 here in before but for cable of cross sectional area 240 to 400 sqmm, 3 core complete all as specified and as directed by Engineer-in-Charge. Note for item 46 to 54 : 1. Excavation & earthwork, Cable cover protection if needed shall be measured and paid for separately

S&F in repairs GI tubing light grade 80 mm bore for cable protection complete all as specified and directed.

All as per item No. 55.00 here in before but 100 mm bore pipe complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing Gun metal stop cock 15 mm dia, ISI Marked suitable for oil inlet/outlet valves of transformer including taking down unserviceable valve complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing Gunmetal stop cock 20 mm dia, ISI Marked suitable for oil inlet/outlet valves of transformer including taking down unserviceable valve complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing GM stop cock 25 mm dia, ISI Marked suitable for oil inlet/outlet valves of transformer including taking down unserviceable valve complete all as specified and as directed by Engineer-in-Charge.

Supplying and laying synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 Kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) IEC/BS EN 61111: 2009 BIS/ERDA/CPRI approved suitable for electrical shock safety of sizes 2m x 1m complete all as specified and as directed by Engineer-in-Charge.

Attending complaints of HT cable / HT switchgear system comprising 11 KV / 440V HT cable network, RMU, VCB panels, Two Pole and Four Pole structures, associated protection system and allied accessories including interruption/failure of power supply, voltage fluctuation, tripping of RMU/VCB due to overload/earth fault/short circuit and restoration of supply by carrying out necessary repairs, tightening of connections, replacement of blown HRC fuses/control fuses, servicing of terminals, dressing of cable ends, and refixing after replacing the unserviceable parts complete all as specified and as directed.

(ii) If the contractor fails to attend the complaint within 02 hours from receipt of complaint, penalty at the rate of Rs. 3000.00 per hour shall be imposed up to 12 hours and there after Rs. 4000.00 per hour shall be imposed till restoration/attendance of complaint. GE’s decision in this regard shall be final and binding.

iii) Contractor shall maintain complaint register/slips indicating nature of fault, time of receipt, rectification carried out and restoration time, and obtain signature of concerned JE E/M on daily basis after rectification.

(iv) Contractor shall provide all necessary safety equipment such as discharge rods, rubber mats, hand gloves, safety belts, danger boards, earth chains, line testers and other PPEs and shall be fully responsible for safety of men and material during execution of work. (v) Contractor shall visit the site and familiarize himself with complete HT distribution system before quoting the tender.

(vi) Contractor shall arrange all necessary T&P including megger, tong tester, HV tester, cable fault locator, crimping tools, hydraulic tools and other testing equipment required for proper execution of work.

Supply and spread granite trap or basalt coarse aggregate size of 40mm graded for the outdoor substation/ structures/ RMU after levelling the existing surface complete all as specified and as directed by Engineer-in-Charge.

Supplying and spreading, compacting M-sand for the out door substation/RMU after levelling the existing ground complete all as specified and as directed by Engineer-in-Charge.

Material and labour for applying two coats of synthetic enamel paint by spray paint after preparation of the entire body of transformer by removing rust deposited completely, of transformer capacity up to 250 KVA and marking SM/MES No installed in substations complete all as specified and as directed by Engineer-in-Charge.

All as per item No.65 here in before but of capacity 315KVA to 750 KVA complete all as specified and as directed by Engineer-in-Charge.

All as per item No.65 here in before but of capacity 1000KVA to 1600 KVA complete all as specified and as directed by Engineerr-in-Charge.

M&L for cleaning of inside and surrounding area of substation premises including removal of dust, dirt, rubbish, vegetation, weeds, cobwebs and other foreign materials from floor, cable trenches, panels surroundings, fencing area and allied locations, sweeping and cleaning complete, maintaining hygienic and safe condition of substation premises, including disposal of unserviceable materials/debris outside the premises to authorized dumping complete all as specified and as directed by Engineer-in-Charge.

Material and labour for cleaning around the two pole/ four pole up to 5 m in all sides by clearing all the grass/ creepers and clearing off all the unserviceable material to a location as specified and as directed by Engineer-in-Charge.

Supply, installation, testing and commissioning in repair of Numerical Directional Over Current and Earth Fault Relay, MLFB No. SIPROTEC 7SR5111 complete with 9 Binary Inputs and 8 Binary Outputs, suitable for HT protection system, having inbuilt protection functions comprising Directional Over Current Protection (67), Directional Earth Fault Protection (67N), Instantaneous/IDMT Over Current Protection (50/51), Instantaneous/IDMT Earth Fault Protection (50N/51N), Under/Over Voltage Protection (27/59), Residual Over Voltage Protection (59N), Under/Over Frequency Protection (81U/O), Negative Phase Sequence Protection (46), Thermal Overload Protection (49), Directional Power Protection (32), Reverse Power Protection (32R), Under Current Protection (37), Trip Circuit Supervision (74) and inbuilt Fault Locator feature, complete with IEC 61850 communication protocol, PRP redundancy, RJ45 Ethernet communication port and cyber security enabled features, including necessary mounting accessories, wiring, ferrules, hardware, testing, programming, configuration, commissioning and integration with existing protection system, complete all as specified and as directed.

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