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| 1 | SITC of 11KV, 630 A, VCB HT Panel & associated works. |
| 2 | Supplying, installation, testing & commissioning of indoor type floor mounted metal clad, 630A, 11 KV, VCB panel with 3 No. VCBs, totally enclosed & fully interlocked, horizontal drawout, horizontal/ vertical isolation type breaker as per IS 13118, as amended up to date and additional specifications, having capacities as mentioned below, single break, trip free mechanism, manually charged and auto/manually closing breaker suitable for use on 11 KV, 3 Phase, 50 Hz A.C. supply with short circuit fault level of 350 MVA, complete with self contained, fully interlocked, rack in and rack out mechanism, air insulatedencapsulated Copper bus bars of 630Amps capacity, breaker featured with mechanical ON/OFF indicator with hand trip device, spring release coil, shunt trip coil and auxiliary switch of 4NO+4NC and equipped with following switchgears and accessories i/c provision for 3core, 240sq. mm. XLPE 11 KV cable entry from bottom side Note :-Refer detailed specifications for High Voltage Panel. (a) Incoming – 1No 630 Amp Vaccum Circuit Breaker drawout type having following accessories i.e 220V Spring charging motor 24volts DC closing coil 24volts DC shunt trip coil Auxillary contacts 4NO+NC operating counter, ON/OFF push buttons, Indicators for ON/OFF, Spring charged/discharged, Manual spring charging device & Non lockable type TNC switch.(b)3 No. – 11 KV / 110 Volts PT Class 0.5 accuracy and 100 VA burden with 1 No. Voltmeter (0-15KV), analog/digital type, selector switch for voltmeter and protection fuses/MCB for HT metering upto 12 KV on incomer.(c) 1No– (0-300 A) dual scale Ammeter, analog/digital type, selector switches for ammeters.(d) 1 No. – Microprocessor based numerical relay with O/L, E/F and S/C protection, Mastder trip relay,& PLA relay with base for anti pumping.(e) 3No. –Dual core dual ratioCTs 300/150/5/5 A of 15 VA burden and accuracy Class – 0.5 for metering and class 5P10 for protection.(f) Outgoing –2 Nos.630Amps Vaccum Circuit Breaker drawout type having following accessories i.e 220v Spring charging motor 24volts DC closing coil 24volts DC shunt trip coil Auxillary contacts 4NO+NC operating counter, ON/OFF push buttons, Indicators for ON/OFF, Spring charged/discharged, Manual spring charging device & Non lockable type TNC switch.(g) 2Nos. – (0-100 A) Ammeters, dual scale analog/digital type & selector switches for Ammeters.(h) 2Nos. – Microprocessor based numerical relay with O/L, E/F and S/C protection, Master trip relay, Auxillary relay 3 element for transformer protection & PLA relay with base for anti pumping (i) 6Nos. – Dual core dual ratio CTs 100/ 50/5/5 A of 15 VA burden and accuracy Class-1.0 for metering and class 5P10 for protection.(j) 630Amps busbar shall be of electrolytic grade Copper with heat shrinkable HT sleeves and supported on Non Hygroscopic Non carbonising corrosion resistance epoxy resin cast insulators (k) Earth bus shall be provided through out the panel length with 2earth terminals for effectively earthing the metallic portion of the panel (l) Power pack :- Input voltage 110V AC, Output voltage 24V DC (m) Space heater with thermostat(n) DP MCB for DC supply & DP MCB for AC supply |
| 3 | REARRANGEMENT OF 3 core 11KV 240 SQ.MM UG CABLES (A) Switching off the 11kv HT Panel, disconnecting & removing the of 1no outgoing UG cable from HT Panel to nearest transformer by cutting the cable joint kit, taking out from the cable duct etc complete as reqd. (Approximately 12mtr long cable) (B) Disconnecting of 1no incoming 11kv BESCOM HT supply cable from exisitng old HT Panel, cutting the joint kit for taking out the cable, rerouting the cable to the nearest Transformer, termination of cable, restoration of 11kv HT supply to the building. checking the load etc complete as reqd. (Approximately 12mtr long cable)Note :-Liasioning & arranging shutdown from BESCOM. |
| 4 | Dismantling of life expired 11kv 3 wayHT Panel by disconnecting outgoing cable to transformer, arranging manpower & necessary T & P for shifitng the 11kv HT Panel to other location manually inside the substation room etc complete as reqd. |
| 5 | Supplying and making indoor cable end termination with heat shrinkable jointing kit complete with all accessories including lugs suitable for3core240 Sqmm XLPE aluminium conductor cable of 11 KV grade as required |
| 6 | Supplying and laying of 3 core 95Sq.mm one number PVC insulated and PVC sheathed / XLPE power cable of 11 KV grade of following size in the existing RCC/ HUME/ METAL pipe/ exsitng trench as required |
| 7 | Supplying and making indoor cable end termination with heat shrinkable jointing kit complete with all accessories including lugs suitable for following size of 3 core 95Sq.mm, XLPE aluminium conductor cable of 11 KV grade as required |
| 8 | Cuttting and modifying the the CC Plinth cutting machinefor HT cable entry to new 11kv HT panel incoming and outgoing cables i/c prdg necessary Cement concrete and brick work etc complete as reqd. a)Cuttting and modifying the the CC Plinth with cutting machine, removing all the debris and disposing off etc |
| 9 | Excavation of earth for CC plinth |
| 10 | Providing and laying in position reinforced cement concrete 1:2:4 (1 cement : 2coarse sand : 4 graded stone aggregate 20 mm nominal size) in foundation for new HT Panel |
| 11 | Providing brick work (in width 225 mm or more) with F.P.S. bricks of class designation 7.5 in cement mortar 1:4 (1 cement : 4 coarse sand) at all levels |
| 12 | Providing 15mm thick cement plaster of mix 1:4 (1 cement : 4 fine sand) at all levels. |
| 13 | Supplying andFixing suitable MSiron frame work for 11kv HT panelmade out of solid channel /angle /flat i/c cutting, welding, drilling, grouting painting with suitable colour etc., as reqd. |
| 14 | Supplying & Fixing of 5mm thick chequred plate in the frame, with 25mm x 25mmx 5mm thick MS angle i/c cutting, welding & painting etc complete etc as reqd. |
| 15 | Providing and fixing 25 mm X 5 mm Copper strip on surface or in recess for connections etc. as required. |
