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| 1 | Preventive / comprehensivemaintenance of 66 / 11 KV EHTV switch yard (details as under) by performing following activities 5 MVA TransformerDetails of equipments installed in switch yard:-(i) 5 MVA Power Transformer – 02 Nos(ii) 66 KV Line No 1(c)HV 66/11 KV Panel with IDMT & Differential & other relays - 01 NO.(iii)HV 66/11 KV Panel with IDMT & Differential & other relays - 01 NO.(iv)RMU with Bus Coupler -01 No. (v)Line Panel -01 Nos (vi)Current Transformer (vii)Circuit Breaker(viii)Potential Transformer (ix)Isolator (x)Surge Arrestors(xi) Protection systemDetails of Activity to be carried out for yearly maintenance (A) Transformer(i) IR & PI Value(ii) BDV, PPM and oil routine test of transformer as per IS : 1866(iv) Tan delta and capacitance measurement of bushing and main windings(v) Measure of winding resistance at all tap positions(vi) All low voltage routine tests |
| 2 | (B) Current Transformer(i) Insulation resistance measurement – Primary to earth (By 5 KV Megger)(ii) Capacitance and tan delta measurement(iii) Checking of star point earthing(C) Circuit Breaker(i) Measurement of static contact resistance(ii) Checking of close / trip Coil current(iii) Measurement of Breaker timings(iv) High voltage test in Case VCB (VI testing)(v) Insulation resistance test |
| 3 | (D) Potential Transformer(i) Measurement of secondary voltage(ii) Checking of star point earthing(iii) Insulation resistance measurement – Primary to earth(iv) Capacitance and tan delta measurement(E) Isolator(i) Main contact resistance measurement(ii) Earth Switch contact resistance measurement(F) Surge Arrestors(i) Insulation resistance measurement(ii) Measurement of leakage current(iii) Checking of structure earthing(G) Batteries / Battery Charger(i) Measurement of specific gravity and voltage of pilot cell and solution level check(ii) Battery impedance testing(iii) Discharge test of battery sets (run down test)(iv) Discharge Cycle check(H) Protection system(i) Testing of all relay with logic checks(I) Thermal Imaging of sub-station.(J) DC Leakage monitoring daily & if any to be attended immediatelyQuoted rates shall be deemed to include the following:- |
| 4 | (a) minor consumable items, ie Nuts bolts, Control wires , PVC tapes, Welding Job, cotton waste & cleaning clothes, petroleum jelly, grease , lubricating oil, emery paper , T & P items etc.(b)Following testing kit for carrying out different tests (as per PGVCL / GETCO norms)(i) Tan-delta testing kit.(ii) Contact resistance kit.(iii) DCRM(Dynamic contact Resistance) kit.(iv) Breaker time testing Kit.(v) Oil (BDV & PPM, DGA) test at Approved Lab.(vi) Earth resistance tester.(vii) Relay testing kit.(viii) Vacuum Interrupter Tester.(ix) Turn Ratio Kit.(x) Winding resistance Kit.(xi) Transformer testing kit. |
| 5 | Note:- (i) Yearly maintenance shall be carried out through Approved Agency by GETCO / PGVCL and contractor shall submit documentry evidence to Engineer-in-Charge for their approval.(ii) Yearly maintenance shall be carried out as per GETCO / PGVCL norms.(iii) Necessary Shutdown from GETCO shall be obtain by the contractor under his own arrangement after approval of Engineer-in-Charge in writing.(iv) Contractor shall submit test result of all equipments after completion of maintenance dully signed by the GETCO / PGVCL approved agency.(v) Contractor shall submit health certificate of complete 66 / 11 KV switchyard after completion of maintenance dully signed by the GETCO / PGVCL approved agency before claiming payment of testing.(vi) Contractor shall be submitted three copy of health certificate after each preventive maintenance and testing result report duly signed by Engr-in-charge shall be kept in record.(v) Preventive maintenance of one yard shall be counted as one job |
| 6 | Preventive / comprehensive maintenance of HT Breaker and Transformer Protection Relay control66 KV by cleaning the Breaker by using air blower, tightening of connection/controls, checking of all fuses, sealing of Breaker at bottom, repairing of Tap changer at bottom, repairing of mechanical parts, oiling/greasing of all moving -parts and carrying out following checks for smooth functioning complete all as specified and directed at site.(a)Visual Inspection Checking.(b)Checking of functional locks, interlocks, signaling devices and auxiliary devices.(c)Checking of suitability and correct operations of protections, control instruments and electrical connection of the circuit breaker operating mechanism.(d)Checking of Tripping Mechanism operation.(e)Calibration of meters of 66 kv(f) Checking with stand voltage on the auxiliary circumstances.(g)Checking of with stand voltage at power frequency.(h)Checking of Breaker ON/OFF operation manually and electrically.(j) Testing of the breaker (k)Cheking of the Master trip relay(Protection relay) |
| 7 | (l) Checking of the AC and DC supervision relay(m)Verification of wiring. (n)Cheking of the Breaker control switch (o) Cheking of the Voltemeter switch (p)Cheking of multifunction meter(q) Testing of the MW meter(r)Testing of Annonciator (s) Testing of Breaker and Transformer protection Relay(t)TestingMaster Trip Relay (u) Testing of IDMT O/C & E/F Relay (v)Testing of Differential Relay(w)Testing of Auxrelay Relay(alarm) (x)Testing of Buch Relay, Oil Temp Relay, WDG Temp Relay, Gas pressure low Alaram ,GasNote: (i) Major Spare Partsif found unserviceable will be measured & paid separately as supply only as below Items other than mentioned here in after will be demed to included in quoted rates of this item. (ii) Unserviceable parts shall be property of contractor as per credit schedule.(iii) Make approved as per OEM shall be used only after approval of GE. |
| 8 | Supply only Indication lamp |
| 9 | Supply only auxiliary switch |
| 10 | Supply only Tripping coil |
| 11 | Supply only closing coil |
| 12 | Supply only Volt meter |
| 13 | Preventive / comprehensive maintenance of HT Tap changer66 KV by cleaning the Tap changer by using air blower, tightening of connection/controls, checking of all fuses, sealing of Tapped at bottom, repairing of Tap changer at bottom, repairing of mechanical parts, oiling/greasing of all moving -parts and carrying out following checks for smooth functioning complete all as specified and directed at site.(a)Visual Inspection Checking.(b)Checking of functional locks, interlocks, signaling devices and auxiliary devices.(c)Checking of suitability and correct operations of protections, control instruments and electrical connection of the circuit breaker operating mechanism. (d)Checking of TAP position indicator. (e)Calibration of meters of 66 kv (f) Checking of the Lower and Raise the Tap Changer. (g)Checking of the Control selector seitch/Auto/Manujal .(h)Checking of the Heater switch . (j) Testing of the Automatic voltage Regulator Relay (k)Relay testing.Note: (i) Any spare Partsif found unserviceable will be measured & paid separately as supply only as below. (ii) Unserviceable parts shall be property of contractor as per credit schedule.(iii) Make approved as per OEM shall be used only after approval of GE. |
| 14 | Supply only Indication lamp |
| 15 | Supply only Controll wiring kit |
| 16 | Supply only Tap changer motor |
| 17 | Material and labour for installation, testing and commissioning of earthing using following material including necessary T&P required to complete job for earthing, excavation etc.Make:- Powertrac Model No-PT-803 or equivalent of make PRAGATI/ McML\"s Earthing Solution (MES)/ Ashlock(a) \"CHEMO\" M.F. Earthing Electrode (conforming to IS 3043:1987) of copper, 3.00 metre long, 80 mm outer dia, copper inner strip of size 50 x 6 mm thick, pipe filled with SRIP compound (50 kg per earthing electrode)(b) FRP based earthing display board with support stand FRP coated width-254 mm, length-380mm, height-610 mm, thickness-2mm(c) PCC earthing protection chamber of internal size 300x300x300mm with 120mm thick wall thickness for each earthing pit in PCC 1:2:4 type B-1 and RCC 1:2:4, type B1 for precast chamber cover 50 mm thick, reinforced with welded steel wire fabric or XPM Jali (weight not less than 4.00 kg/sqm)Note:-(i) Earthwork in any type of soil, installation of complete earthing system will be carried out in presence of company\"s authorised tradesmen/ representative. |
| 18 | (ii) Item rate quoted by contractor shall include for 250 mm dia bore upto 5 metre deep and pouring, mixing of SRIP compound with soil.(iii) Drawing for single bore earthing is enclosed.(d) The earthing result will be obtained for each electrode must be less than 1Ω.Otherwise contractor is liable to do chemical earthing to meet the result without extra cost if the results are above 1Ω.(e) Contractor must visit the site before quoting the tender to understand the difficulty and cost for carrying out the job in the station. It is important that contactor ascertain the quantum of work.(f) Contractor must produce the certificate from the manufacturer that chemicalearthing has been carried out by manufacturer. The manufacturer must also mention the warranty for chemical earthing.(g) Extension strip from electrode strip upto 0.15 m height from GL to be deemed included in quoted rate including brazing(h) The contractor has to give in writing for 3 years minimum warranty for constant result of earth below 1Ω. |
| 19 | M&L for Preventive / comprehensive maintenance ofHT VCB 11 KV by cleaning the VCB by using air blower, tightening of connection/controls, checking of all fuses, sealing of VCB at bottom, repairing of VCB at bottom, reparing of mechanical parts, oiling/greasing of all mooving -parts and carrying out following checks for smooth functioning complete all as specified and directed at site. |
| 20 | (a)Visual Inspection Checking.(b)Checking of funtional locks, interlocks, signaling devices and auxiliary devices.(c)Checking of suitablility and correct operations of protections, control instruments and electrical connection of the circuit breaker operating mechanism.(d)Checking of Tripping Mechanism operation.(e)Checking Spring Charging Limit Switch Operation.(f) Checking with Standardvoltage on the auxiliary circuit.(g)Checking of with Standardvoltage at potential transformer and power frequency.(h)Checking of Breaker ON/OFF operation manually and electrically.(j) Testing of vacuum Bottle integrity.(k)Relay testing.(l) Checking of the resistance of the main circuit.(m)Verification of wiring.Note:(i) Any spare Partsif found unserviceable will be measured & paid separately as supply only as below. (ii) Unserviceable parts shall be property of contractor as per credit schedule.(iii) Make approved as per OEM shall be used only after approval of GE. |
| 21 | Supply only Indication lamp panels (red/green/white/blue). |
| 22 | Supply onlyauxiliary switch. |
| 23 | Supply onlyTripping coil. |
| 24 | Supply onlyClosing coil . |
| 25 | Supply onlyVaccum bottle. |
| 26 | Supply only Limit switch. |
| 27 | Supply onlySpring charging motor. |
| 28 | Supply onlyTerminal protector silcab (Raychem). |
| 29 | Supply onlyEnd piece. |
| 30 | Supply onlyJha contact. |
| 31 | S&F in replacement ofCT unit from crompton make of HT 11 KV VCB panel, 300 Amp capacity and provn of new CT unit as per existing CG Make 11 KV HT VCB Panel trolley mounted having 2 core protection & ratio 300/1+1+1 Amps 2 core CT 1st core for metering, 2nd core for protection, Including complete connection & testing on completion, complete all as specified and as directed. |
| 32 | S&F in replacement of MS chequered plate 5 mm thick as per cover for cable duct duly painted both side with two coats of synthetic enamelled paint over a coat of red oxide & with provn of lifting handle on both side in each piece of size 1 mtr x 0.8 mtr complete all as specified and as directed. |
| 33 | Supply and fixing in repalcement of 60 kV Lightening Arrester, breaking capacity 10 KA, Class 3, Lightening Arrester on its erected structure including fixing with clamps, connectors, corona rings, surge counter and other accessories complete as per Existing used in Switchyard, complete all as specified and as directed. |
| 34 | Supply and fix Closing Coil for existing 66 KV Breaker as per Existing used in Switchyard, complete all as specified and as directed. |
| 35 | Supply and fix Tripping Coil for existing 66 KV Breaker as per Existing used in Switchyard complete all as specified and as directed. |
| 36 | Supply & fixingVCB trolley 11 KV , 800 amps capacity , 25 KA /3 sec floor mounted 3 phase ,50 Hz, complete including Contact , VI (Vacuum Intrupter) Mechanism as per VCB Panel for interchangeable, complete all as specified and as directed. Make :- Same make as supply & Fix against Item Sl No 13 |
| 37 | Supply and fix 66KV line side earth blade switch for center break isolator 630A, 25 KA DB isolator motorized consisting of 3 base channels including interconnected piping with operation mechanism and accessories with final adjustment for simultaneous operating & closing complete. (Earth blade switch sample has already installed at MES side 66 KV yard, sample has to be approved by GE before procurement) |
| 38 | Dehydration / filtration of transformer oil of transformers/ Voltage Stabilizer of various capacities installed at different locations by disconnecting plants electrically for recirculation existing transformer oil with trolley mounted filtration plant till dielectric strength not less than 60 KV.Note- Quoted rates shall be deemed to include for following :- (i) Oil shall be tested after filtration and test result will be recorded before & after filtration of oil.(ii) Contractor should make his own arrangement for oil filtration plant including transportation complete.(iii) New Transformer oil for topping up will be measured and paid in relevant item as required(iv) All necessary T&P / testing equipment shall be provided by the contractor at his own cost. No extra payment shall be made to the contractor. |
| 39 | Supply & topping up of transformer oil up to required level for transformer/Voltage stabilizers of duly filtered with filtration plant to obtain high dielectric strength 60 KV &aboveall as per IS specification. (Note : Transformer oil shall be supplied in sealed barrels with test certificate. ) |
| 40 | Supply and fix in repair breather with silica gel for transformer of capacity from 5000 KVA. |
| 41 | Supply, installing, testing and commissioning of 66KV oil filled out door type current transformer, CT ratio 60/1 A complete all as specified and as directed. |
| 42 | Supply, installing, testing and commissioning of 66KV oil filled out door type Voltage transformer, PT ratio 66/√3, 110V/√3,complete all as specified and as directed. |
| 43 | Supply and spreading 40 mmgraded stone aggregate on ground of sub station, average spreading levelling complete all as specified and directed . (Note: Measurement shall be carried out for nit finished area of work executed.) |
| 44 | Taking out HT underground cable from duct from existing / pole etc, aluminium conductor of size240 sqmm 3 core complete all as specified and as directed. |
| 45 | Taking out HT underground cable from duct from existing / pole etc, aluminium conductor of size95 to 120 sqmm 3 core complete all as specified and as directed. |
| 46 | Supply, laying, jointing and testing XLPE insulated, PVC inner sheathed, armoured with galvanised steelstrip, heavy duty, HT underground cable ISI marked with aluminium multistranded conductor 11000 volt (UE) grade of size 240 Sqmm 3 core laid in duct passing through pipe / duct or fixed on pole and connectingcomplete all as specified and as directed. |
| 47 | Supply, laying, jointing and testing XLPE insulated, PVC inner sheathed, armoured with galvanised steelstrip, heavy duty, HT underground cable ISI marked with aluminium multistranded conductor 11000 volt (UE) grade of size 95 Sqmm 3 core laid in duct passing through pipe / duct or fixed on pole and connectingcomplete all as specified and as directed. |
| 48 | Supply, laying, jointing and testing XLPE insulated, PVC inner sheathed, armoured with galvanised steelstrip, heavy duty, HT underground cable ISI marked with aluminium multistranded conductor 11000 volt (UE) grade of size 120 Sqmm 3 core laid in duct passing through pipe / duct or fixed on pole and connectingcomplete all as specified and as directed.Note for Item No 39, 40 & 41 :-(i) Sand cushioning, cable protection, GI protection pipe, clamps, jointing kits and excavation & earth work shall be measured & paid for separately.(ii) Road cutting/floor cutting /cutting holes etc in walls required for laying/fixing of cable etc shall be made good as per existing. Nothing extra shall be admissible on this account. Quoted rates shall be inclusive of the above provisions.) |
| 49 | Supply and fixing in replacement for heat shrinkable jointing kit indoor termination type suitable for 11 KV, along with complette accessories suitable for XLPE armoured aluminium cable of 240 sqmm to 300 sqmm 3 coreincluding dismantling & taking out old unserviceable jointing kit, complete all as specified and as directed. |
| 50 | Supply and fixing in replacement for heat shrinkable jointing kit outdoor termination type suitable for 11 KV, along with complette accessories suitabhle for XLPE armoured aluminium cable of 240 to 300 sqmm 3 core complete all as specified and as directed. |
| 51 | Supply and fixing 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 95 sqmm complete all as specified and directed. |
| 52 | Supply and fixing 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 to 185 Sqmm complete all as specified and directed. |
| 53 | Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm complete all as specified and directed. |
| 54 | Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sqmm complete all as specified and directed. |
| 55 | Supply and laying in repair GI tubing 100 mm dia bore light grade fixing on pole / wall for cable protection with necessary fittings etc including taking down old tubing complete all as specified and directed. |
| 56 | Excavation in trenches in soft/loose soil not exceeding 1.5 metre wide and not exceeding 1.5 metre deep for laying/taking out of cables and foundation of poles etc. and getting out, complete all as specified and directed. |
| 57 | Returning, filling in trenches (soil), including spreading, leveling and well ramming in layers not exceeding 25 cm thick, complete all as specified and directed. |
| 58 | Removal of surplus excavated soil to a distance not exceeding50metre and depositing where directed at a level not exceeding1.5metre above the starting point,complete all as specified and directed. |
| 59 | Material and labour, sand cushioning with a layer of dry river sand, 80mm thick before laying of cable and 150mm thick (punned down to 100mm thick) after laying of cables, in trenches/ducts, complete all as specified and directed. (Note : Punned down thickness (overall 18cm), shall be considered for measurement and payment.) |
| 60 | Supplying and laying un-reinforced precast concrete cable cover, class HV, Type 1, flat, size 300mmx 180mm x 40mm complete all as specified and directed by Engineer in charge |
| 61 | M & L for Painting of Complete Yard infra structure of 66 kva removing the old paint after two coats of synthetic enemaled paint and necessary welding required made by the contractor and all as specified and as directed. |
| 62 | Deployment of manpower and cable fault locator machine duly mounted on vehicle for detection of HT UG cable fault of any size & make by applying upto 15 KV supply to locate the fault. Necessary arrangements requiredshould be provided by the contractor. (Note:Payment under this item shall be measured and made only if any fault is detected) |
| 63 | Note for above SrlItem No 1 to 55 :- (i) Work shall be executed by the authorised service mechanic/Electrician of manufacturer,After satisfactorily completion of servicing of HT Transformer/VCB/HT Breaker/HT Tap changerIf any fault occurs upto the completion of contractshould be attended by concerned rep within stripulated time frame without fail , quoted rates is deemed to be included all such charges. (ii)If any above HT Equipment and connected items become breakdown, the contractor shall loacate the problem/fault at site within 12 hours on intimation by JE/Engineer-In-Charge and ensure that the fault to be rectified within 48 Hours , failing which an amount of Rs 200 /- per hour will be recovered as a penal recovery from any payment due to contractor after expiry of 48 hours.) (iii) Minor consumable items, ie Nuts bolts, Control wires , PVC tapes, Welding Job, cotton waste & cleaning clothes, petroleum jelly, grease , lubricating oil, emery paper , T & P items etc, is to be arranged by contracttor without any extra cost. |
