REPAIR/MAINTENANCE OF TRANSFORMERS AND MAFI INSTALLATION AND CONNECTED WORKS AT AF STATION JAMNAGAR NO. 1.

Amount

Overhauling of up to 100 KVA capacity transformer/Isolation TR, 11 KV / 433 V, by disconnecting LT / HT connections, cleaning complete for making it carbon free, checking for any loose bushings & making it rectified if found & reconnecting with LT / HT connections, testing and commissioning on load complete all as specified & directed by Engr-in-Charge for the following transformers.

Note:- (i) Filtration of transformer oil if required will be measured & paid separately. (ii) Topping up with new transformer oil if required will be measured & paid separately (iii) Any spare Part & rewinding if found unserviceable will be measured & paid separately as supply & fix in repair.

All as per item No 1 above but 160 to 250 KVA capacity transformer 11 KV / 433 V.

All as per item No 1 above but 315 to 400 KVA capacity transformer 11 KV / 433 V.

All as per item No 1 above but 500 KVA capacity transformer 11 KV / 433 V.

All as per item No 1 above but 750 KVA capacity transformer 11 KV / 433 V.

S&F in repair 11 KV HT terminal comprising stud, insulator, nut, bolt, washer etc (for three phase) suitable for out door type transformer of capacity up to 250 KVA complete all as specified & directed by Engr-in-Charge

S&F in repair 11 KV HT terminal comprising stud, insulator, nut, bolt, washer etc (for three phase) suitable for out door type transformer of capacity 315 to 400 KVA complete all as specified & directed by Engr-in-Charge

S&F in repair 11 KV HT terminal comprising stud, insulator, nut, bolt, washer etc (for three phase) suitable for out door type transformer of capacity 500 to 750 KVA complete all as specified & directed by Engr-in-Charge

S&F in repair 0.433 KV LT terminal comprising stud, insulator, nut, bolt, washer etc (for three phase & neutral) suitable for transformer of capacity up to 250 KVA complete all as specified & directed by Engr-in-Charge

S&F in repair 0.433 KV LT terminal comprising stud, insulator, nut, bolt, washer etc (for three phase & neutral) suitable for transformer of capacity 315 to 400 KVA complete all as specified & directed by Engr-in-Charge

S&F in repair 0.433 KV LT terminal comprising stud, insulator, nut, bolt, washer etc (for three phase) suitable for out door type transformer of capacity 500 to 750 KVA complete all as specified & directed by Engr-in-Charge

Supply & topping up of transformer oil up to required level for transformer / / PT's / stabilizers / HT switches etc of dielectric strength 50 KV & above all as per IS specification.

Supply and fix in repair breather with silica jel for transformer of capacity from 63 KVA to 750 KVA complete all as specified & directed by Engr-in-Charge.

Supply and fix in repair oil level gauge for transformer of capacity from 63 KVA to 750 KVA complete all as specified & directed by Engr-in-Charge.

M & L for preparation of old painted surface of transformer of capacity 63 to 100 KVA, including connected accessories complete by cleaning / scraping oil, grease dirt and rust with steel wire brush and emery paper to obtain clean and smooth surface, and applying two coat of synthetic enamel paint as per MES colour code, including rewriting of MES No complete all as specified & directed by Engr-in-Charge.

All as per item No 15 above but transformer of capacity 160 to 250 KVA.

All as per item No 15 above but transformer of capacity 315 to 500 KVA.

Dehydration / filtration of transformer oil of transformers, OCBs, PT's, oil switches, Ring main Tee unit , Stabilizers etc 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 40 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

M & L for rewinding of HV / LV limb of transformer / Stabilizer of any capacity by dismantling and removing the burnt out copper winding cleaning of limb thoroughly and rewinding the same with supper enameled copper winding wire of the same gauge and turn with proper class of insulation impregnated & baking, assembling and testing complete all as specified & directed by Engineer-in-Charge. (dry type/oil type) Note: Transpotation to & fro to local/company workshop is deemed to be above quoted rates.

Cutting, trimming and prunning of trees/tree branches/creepers/climbers of all around existing Sub Stn area up to fencing/boundry wall including cleaning the disturbed area beneath and removing the tree branches and debris from site and depositing all as specified and directed by Engineer-in-Charge. Note:- (i) Each sub stn wilol be maintained once ina month for 6 months

Supply and spreading 40 mm size graded stone aggregate on ground of sub station, average spreading levelling complete, all as specified and directed by Engg-in-Charge. Note: Measurement shall be carried out for net finished area of work executed.

M&L for heat shrinkable jointing kit indoor type suitable for 11 KV, along with complette accessories suitabhle for XLPE armoured aluminium cable of 95/120 Sq mm 3 core complete all as specified and directed by Engineer-in-Charge.

M&L for heat shrinkable jointing kit outdoor type suitable for 11 KV, along with complette accessories suitabhle for XLPE armoured aluminium cable of 95/120 Sq mm 3 core complete all as specified and directed by Engineer-in-Charge.

M&L for heat shrinkable jointing kit stright through type suitable for 11 KV, along with complette accessories suitabhle for XLPE armoured aluminium cable of 95/120 Sq mm 3 core complete all as specified and directed by Engineer-in-Charge.

Supply & lay XLPE insulated, PVC inner sheathed, armoured with galvanised steel strip or wire, heavy duty, HT underground cable ISI marked with aluminium multistranded conductor 11000 volt grade of size 95 Sqmm 3 core laid in trenches / duct passing through pipe / duct or fixed on pole and connecting and testing complete all as specified & directed by Engr-in-Charge.

Supply & lay XLPE insulated, PVC inner sheathed, armoured with galvanised steel strip or wire, heavy duty, HT underground cable ISI marked with aluminium multistranded conductor 11000 volt grade of size 120 Sqmm 3 core laid in trenches / duct passing through pipe / duct or fixed on pole and connecting and testing complete all as specified & directed by Engr-in-Charge.

Deployment of manpower and cable fault locator machine duly mounted on vehicle for detection of HT UG cable fault of any size & make by pplying upto 15 KV supply to locate the fault and any necessary arrangements required contractor should be provided Note: Payment is only applicable if req of contractor is able to traceout fault.

Taking out HT underground cable from trenches / pole etc, aluminium conductor of size 95 sqmm 3 core complete all as specified & directed by Engr-in-Charge.

Taking out HT underground cable from trenches / pole etc, aluminium conductor of size 120 sqmm 3 core complete all as specified & directed by Engr-in-Charge.

Laying only old taking down HT underground cable from trenches / pole etc, aluminium conductor of size 95 sqmm 3 core complete all as specified & directed by Engr-in-Charge.

Laying only old taking down HT underground cable from trenches / pole etc, aluminium conductor of size 120 sqmm 3 core complete all as specified & directed by Engr-in-Charge.

Excavation in trenches not exc 1.5 m wide and n.exc 1.5 m in depth for foundation / fixing of pole / laying of cable and pipe line etc or for man hole etc not exc 10 sqm on plan and getting out in soft / loose soil complete all as specified & directed by Engr-in-Charge.

Excavation in trenches not exc 1.5 m wide and n.exc 1.5 m in depth for foundation / fixing of pole / laying of cable and pipe line etc or for man hole etc not exc 10 sqm on plan and getting out in Hard/Rock/Rcc/Pcc soil complete all as specified & directed by Engr-in-Charge.

Returning filling in including spreading levelling, watering and well ramming in layers not exc 25 cm thick using excavated soil complete all as specified & directed by Engr-in-Charge.

Removing excavated soil to a distance n.exc 50 m and depositing where directed at a level n.exc 1.5m above the starting point.

M&L for providing dry river sand as in sand cushioning below and above cable thickness as specified in SSR to under ground cable including punning down of sand in layer all as specified and directed by Engg-in-Charge. Note: for measurement purpose any punned thickness of sand will be considered.

Taking out old PCC cable cover of any type / any size from trenches complete all as specified & directed by Engr-in-Charge.

Laying only PCC cable cover for HT / LT UG cable, of any description retrieved from item No 21, complete all as specified & directed by Engr-in-Charge.

Supply & laying ISI marked & conforming to IS - 5820 - 1970 unreinforced precast concrete cable cover Class HV , flat of size 300 mm X 180 mm X 40 mm in trenches as protection to HT UG cable complete all as specified & directed by Engr-in-Charge.

Supply and laying in repair GI tubing 80 mm dia bore light grade laid in trenches / floor / fixing on pole / wall for cable protection with necessary fittings etc. & taking down old tubing complete all as specified & directed by Engr-in-Charge.

M&L for Boring under roads / pavement / hard standing without disturbing the top surface by trench less technology using ultra sound technique and necessary machine including supply & inserting HDPE pipe of 150 mm dia suitable for 0.4 mpa working pressure for passing through the cables complete all as specified & directed by Engr-in-Charge.

Note : Necessary infrastructure required for boring shall be arranged by the Contractor at his own cost.

M&L for Repair/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 moving -parts and carrying out following checks for smooth functioning complete all as specified & directed by Engr-in-Charge.

(a) Visual Inspection

(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.l

(e) Spring Charging Limit Switch Operation.

(f) Checking with stand voltage on the auxiliary circumestances.

(g) Checking of with stand voltage at 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 circumstances.

S& F in repair CT 75 to 150 +5-5 as per required existing size of vcb

S& F in repair CT 150 to 300 +5-5 as per required existing size of vcb

S& F in repair Indication lamp for VCB panels(red/green/white/blue)

S& F in repair auxiliary switch for VCB

S& F in repair Tripping coil for VCB

S& F in repair Closing coil for VCB

S& F in repair Vaccum bottle

S& F in repair Limit switch

S& F in repair Spring charging motor

S&F in repair Jha contact Note : (i) Work shall be executed by the authorised service mechanic/Electrician of manufacturer. After satisfactory completion of servicing of HT Transformer/VCB. If any fault occurs upto completion of contract period should be attended by concerned rep within stripulated time frame without any delay, quoted rates is deemed to be included all such charge (ii) item No. 1 to 52 if any breakdown in above HT Equipment and connected items, Contractor shall appoint his staff to locate the problem / fault at site within 12 hours on intimation by JE/Engineer-in-Charge and ensure that the fault are 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.)

Supply & fix ACB 4 Pole, 415 V, Manual Drawout type with microprocessor release of capacity 630 Amps complete all as directed by engieer-in-Charge.

Supply & laying PCC HT line route indicator of size 450 mm x 230mm x 50 mm above the ground and 250 mm in depth complete with red colour all as directed by Engineer-in-Charge.

Supplying & fixing in repair Danger notice plate of 1.6 mm thick mild steel sheet, vireous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M/S. clamps, bolts and nuts of approved size, for HT, 25x20cm size.

S & F in repairs lighting arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp suitable for 11 KV.

Note :- (i) Item No.1 to 56 work shall be executed by the authorised service mechanic/Electrician of manufacturer or as per directed by Engg-in-Charge. After satisfactory completion of servicing of HT Transformer/VCB if any fault occurs upto completion of concerned period should be attended by concerned rep within stripulated time frame without any delay, quoted rates is deemed to be included all such charges.

(ii) Item No.1 to 52 if any breakdown in above HT Equipment and connected items, Contractor shall appoint his staff to locate the problem/fault at site within 12 hours on intimation by JE/Engg-in-Charge and ensure that the fault are rectified within 48 hours, failing which an amount of Rs.200/- per hour will be recovered as penal recovery from any payment due to contractor after expiry of 48 hours.

K K Construction Co

Sukhi Electricals

vijay infraprojects pvt ltd

Parth Infrastructure Pvt. Ltd.

SURESH ELECTRICALS

Electricals India