REPAIR/MAINTENANCE OF 66 KVA SUBSTATION AND HT CABLES AND CONNECTED WORKS AT AF STATION JAMNAGAR

Amount

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 50 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

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 gel for transformer of capacity from 5000 KVA

Cutting, trimming and prunning of trees/tree branches/creepers/climbers of all around existing 66/11KV Sub Stn area up to fencing/boundary 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 will be maintained once in a month as directed by JE/AGE as per requirement.

Supply and spreading 40 mm graded stone aggregate on ground of sub station, average spreading leveling 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 complete accessories suitable for XLPE armoured aluminum 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 complete accessories suitable for XLPE armoured aluminum 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 straight through type suitable for 11 KV, along with complete accessories suitable for XLPE armoured aluminum 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 galvanized steel strip or wire, heavy duty, HT underground cable ISI marked with aluminum 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

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 and and any necessary arrangements required contractor should be provided Note: If HT cable fault not detected payment not to be paid by contractor.

Taking out HT underground cable from trenches / pole etc, aluminum conductor of size 95 sqmm 3 core all as specified and directed.

Laying only old taking down HT underground cable from trenches / pole etc, aluminum conductor of size 95 sqmm 3 core all as specified and directed.

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 all as specified.

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/interlocking tiles soil all as specified.

Returning filling in including spreading leveling, watering and well ramming in layers not exc 25 cm thick using excavated soil all as directed

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 all as specified and directed.

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

Supply and laying in repair GI tubing 100 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 and directed.

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 and as directed. 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, 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) Spring Charging Limit Switch Operation.

(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 vacuum Bottle integrity. (k) Relay testing. (l) Checking of the resistance of the main circumstances. (m) Verification of wiring. Note: (i) Any spare PartS if found unserviceable will be measured & paid separately as supply & fix in repair.

S& F in repair CT (75 to 150) ± 5 as per required existing size of vcb and directed by Engineer-in-Charge.

S& F in repair CT (150 to 300) ± 5 as per required existing size of vcb and directed by Engineer-in-Charge.

S& F in repair Indication lamp for VCB panels(red/green/white/blue) as per existing and directed by Engineer-in-Charge.

S& F in repair auxiliary switch for VCB as per existing and directed by Engineer-in-Charge.

S& F in repair Tripping coil for VCB as per existing and directed by Engineer-in-Charge.

S& F in repair Closing coil for VCB as per existing and directed by Engineer-in-Charge.

S& F in repair Vaccum bottle as per existing and directed by Engineer-in-Charge.

S& F in repair Limit switch as per existing and directed by Engineer-in-Charge.

S& F in repair Spring charging motor as per existing and directed by Engineer-in-Charge.

S& F in repair Jha contact as per existing and directed by Engineer-in-Charge.

S& F in repair Terminal protector silcab (Raychem) as per existing and directed by Engineer-in-Charge.

S& F in repair Stem-RMU as per existing and directed by Engineer-in-Charge.

S& F in repair Contract shell for coupling RMU as per existing and directed by Engineer-in-Charge.

S& F in repair End piece as per existing and directed by Engineer-in-Charge.

S& F in repair SS Hex nut (M-12) as per existing and directed by Engineer-in-Charge.

S& F in repair T Shround (new) for 11 KV as per existing and directed by Engineer-in-Charge.

S& F in repair S series bushing as per existing and directed by Engineer-in-Charge.

S& F in repair O ring for S series bushing as per existing and directed by Engineer-in-Charge.

S& F in repair Capacitor Unit VPIS 9-15 KV w. Cord as per existing and directed by Engineer-in-Charge.

S& F in repair VPIS Cable ||Toff L1-1.36L2-1.25L3-1.15 as per existing and directed by Engineer-in-Charge.

S& F in repair 3.75KG SF6 gas cylinder as per existing and directed by Engineer-in-Charge.

S& F in repair SF6 Gas cylinder (9KGs/Cyl) as per existing and directed by Engineer-in-Charge.

S& F in repair Shaft for operating handle as per existing and directed by Engineer-in-Charge.

S& F in repair Clam pin g plate_A as per existing and directed by Engineer-in-Charge.

S& F in repair Clamping Nut M8x21 as per existing and directed by Engineer-in-Charge.

S& F in repair Distance piece as per existing and directed by Engineer-in-Charge.

S& F in repair Wave washer M12 as per existing and directed by Engineer-in-Charge.

S& F in repair KP9-1104 ILL.Push button as per existing and directed by Engineer-in-Charge.

S& F in repair KP9-1106 ILL.Pushbutton as per existing and directed by Engineer-in-Charge.

Note: Item no 1 to 52 (i) Work shall be executed by the authorized service mechanic/Electrician of manufacturer,After satisfactorily completion of servicing of HT Transformer/VCB If any fault occurs upto the completion of contract should be attended by contractor within stipulated 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 locate 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 contractor without any extra cost.

SURESH ELECTRICALS

ASCENT ELECTRIFICATION ENGINEERS