REPAIR / MAINT OF 66 KV /11 KV AT MRS WITH ALLIED WORKS UNDER GE (AF) JAMNAGAR NO 01

Amount

Preventive / comprehensive maintenance of 66 / 11 KV EHTV switch yard (details as under) by performing following activities 5 MVA Transformer Details 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 system Details 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

(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

(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 immediately Quoted rates shall be deemed to include the following:-

(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.

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

Preventive / comprehensive maintenance of HT Breaker and Transformer Protection Relay control 66 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)

(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)Testing Master 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 ,Gas Note: (i) Any spare Parts if 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.

Supply only Indication lamp

Supply only auxiliary switch

Supply only Tripping coil

Supply only closing coil

Supply only Volt meter

Supply only Indication lamp

Supply only Tap changer motor

Material and labour in replacement for provision of earthing complete with copper earth plate electrode 600 mm x 600 mm 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 the plate not less than 1.5 m deep below normal ground connected to Copper strip 32 x 6 mm by means of bolts, nuts, check nuts and washer of copper, watering pipe of 20 mm bore galvanised iron medium grade and 40 mm bore galvanised iron light grade for earth strip protection including all excavation, earth work in any type of soil, PCC 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), with charcoal, salt, funnel complete all as shown in the electrical plate No 3 of SSR part –I and testing on completion. Note : (i) Earth result after installation completely should be less than 5 Ohm .(ii) Quoted rates shall be deemed to include for earth strip with protection pipe of 7.5 M length.

Supply and laying Copper strip 20 x 3.15mm with saddles and fixing screws etc, complete all as specified and directed .

M&L for Preventive / comprehensive maintenance of HT 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.

(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 Standard voltage on the auxiliary circuit. (g) Checking of with Standard voltage 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 Parts if 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.)

Supply only Indication lamp panels (red/green/white/blue).

Supply only auxiliary switch.

Supply only Tripping coil.

Supply only Closing coil .

Supply only Vaccum bottle.

Supply only Limit switch.

Supply only Spring charging motor.

Supply only End piece.

Supply only Jha contact.

S&F in replacement of CT unit from Schnider make of HT 11 KV VCB panel, 800 Amp capacity and provn of new CT unit as per existing make and capacity Including complete connection & testing on completion, complete all as specified and as directed.

S&F in replacement of CT unit from Crompton make of HT 11 KV VCB panel, 630 Amp capacity and provn of new CT unit as per existing make and capacity Including complete connection & testing on completion, complete all as specified and as directed.

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.

Supply & fixing in replacement of VCB trolley 11 KV , 800 amps capacity ,Rated voltage 12KA System breking capacity 18.4 KA /3 sec 3 phase ,50 Hz, complete including Contact , VI (Vacuum Intrupter) Mechanism , PT s complete all as specified and as directed. Make :- Schnider or recommended by OEM.

Supply & fixing in replacement of VCB trolley 11 KV , 630 amps capacity ,Rated voltage 12KA System breking capacity 20 KA /3 sec 3 phase ,50 Hz, BIL 28/75 complete including Contact , VI (Vacuum Intrupter) Mechanism , complete all as specified and as directed. Make :- CROMPTON or recommended by OEM.

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.

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 & above all as per IS specification. (Note : Transformer oil shall be supplied in sealed barrels with test certificate. )

Supply and fix in repair breather with silica gel for transformer of capacity from 5000 KVA.

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.

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.

Supply and fix in replacement of Battery Power Pack 100 VA input voltage 230 V AC and output voltage 110 DC complete all as specified and directed by Engineer in Charge

Supply and fixing in replacement of Earthfault and Over Current relay with digital display Model no CGI14N for Crompton Make VCB Panel complete all as specified and directed by Engineer in charge

Supply and fixing in replacement of Master trip relay ,Aux voltage 110V ,number of contacts 4 No+1 Model no CGX1 for Crompton Make VCB Panel complete all as specified and directed by Engineer in charge

Supply and fix inreplacement of Earth fault and Over current relay with digital display Un-100/110V,Fn-50/60Hx,In 1/5A Type P3U30-5AA2BCAA REL52004 Make Schnider or Make approved as per OEM.

Supply and fix in replacement of announciator for VCB panel Model No MLD-02 Make -Alan or recommended by OEM.

Supply and spreading 40 mm graded 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.)

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 core including dismantling & taking out old unserviceable jointing kit, complete all as specified and as directed.

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.

Supply and fixing in replacement 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 95sqmm complete all as specified and directed.

Supply and fixing in replacement 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.

M & L for Painting of Complete Yard infra structure including ISA,ISMC and all structural steel 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.

Material and labour for area cleaning/ miant and cutting of grass ,plants,shrubs ,vegitations using grass cutting machine or mannually within the 66/11 KV switch yard and sub station area not more than 1500 Sqm including removal of all debries complete all as specified and directed Note:-(i) The grass,plants,shrubs,vegitation and bushes shall not be allowed to grow more than 15 Cm from hte ground level of any time

Note for above Srl Item No 1 to 44 :- (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 changer If any fault occurs upto the completion of contract should 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.

M/s SK Traders (BID ID -3363820)

SURESH ELECTRICALS (BID ID -3366945)

Sukhi Electricals (BID ID -3360533)