SITC of 11 KV HT VCB Panel including Supplying and laying of 3C x 185 Sqmm HT Power Cable end termination and earthing work at CSIR HRDC Ghaziabad

Amount

Supply, installation, testing, and commissioning of 11kV, 3 Phase, 50 Hz, AC Supply,350 MVA Breaking Capacity indoor High tension (HT) Ring Main Unit (RMU) with 3 nos. of Vacuum Circuit Breaker (VCB) modules (1 Incomer + 2 Outgoing feeders), each rated at 630A, floor-mounted, in IP55 enclosure equipped with short circuit, over current, earth fault protection, master relay and auxiliary realy for transformer protection.

Construction: Non-extensible, fixed-type, SF6 gas-insulated switchgear suitable for indoor use. All live components enclosed in an SF6-filled stainless steel sealed tank (IP67). Internal PVC-insulated copper busbars rated at 630A.

Breaker Modules: Spring-charged energy mechanism (trip-free) Three-position isolator/earthing switch Mechanical indicators: ON, OFF, Earth, Trip, Spring Charged/Discharged Each module to have arc-proof hinged doors with self-interlocking to the earth switch.

Protection & Metering: Self-powered numerical relay with Overcurrent, Short Circuit, and Earth Fault protection (IDMTL + Inst.). Cast resin insulated CTs and PTs, mounted in the cable box, as per IEC 60044-1 (CTs) & IEC 61869-1 (PTs), with suitable ratio, burden, and accuracy class.

Cable and Termination: Suitable for 3C x 185 sqmm XLPE 11kV cable (bottom entry). Termination with heat-shrinkable kits (Note: Cost of end termination is not included in this item).

General Configuration of VCB:

1. Rated Voltage: 11000 Volt

2. Highest System Voltage: 12000 Volt

3. Frequency: 50 Hz

4. Short circuit breaking current : 21 kA

5. Short circuit breaking capacity (Fault Level) : 350 MVA

6. Short time withstand current (3sec) : 21 kA.

7. Making Capacity : As per relevant IS Standards

8. Degree of Protection : IP 55

All live parts, Copper busbars, isolators, VCBs shall be enclosed in sealed for life robotically laser welded single stainless steel tank minimum 3 mm thickness.

The panel shall be complete with respect to the protection systems, Power Pack, indicating instruments, measuring instruments, space heaters, earthing switches, capacitive voltage indicators & fully interlocked and also featured with Mechcanical ON/OFF indicator as required. The RMU-HT Panel shall comply with relevant IS/IEC standards and be supplied as per the manufacturer's specifications, with standard warranty provisions

Supplying and laying of 3 core x 185 sq mm 11 KV XLPE insulated (UE - Unearthed) Armoured Aluminium Conductor HT Power Cable conforming to IS: 7098 (Part-2) with latest amendments up to date , PVC insulated and PVC sheathed / XLPE power cable of 11 KV grade direct in ground including excavation, sand cushioning, protective covering and refilling the trench etc as required.

Supplying and laying of 3 core x 185 sq mm 11 KV XLPE insulated (UE - Unearthed) Armoured Aluminium Conductor HT Power Cable conforming to IS: 7098 (Part-2) with latest amendments upto date, PVC insulated and PVC sheathed / XLPE power cable of 11 KV grade in the existing 100 mm dia GI pipe (medium class) in ground etc complete as required.

Providing, laying & fixing 100 mm dia GI pipe (medium class) in ground complete with GI fittings including trenching (75 cm deep) & refilling etc as required.

Supplying and making indoor cable end termination with heat shrinkable jointing kit complete with all accesseries including lugs suitable for size 3 C x 185 Sqmm, XLPE aluminium conductor cable of 11 KV grade as required.

Supplying and making outdoor cable end termination with heat shrinkable jointing kit complete with all accesseries including lugs suitable for size 3 C x 185 Sqmm, XLPE aluminium conductor cable of 11 KV grade as required.

Supplying and fixing cable route marker with 10cm x 10 cm x 5 mm thicks G.I. plate with incription there on, bolted / welded to 35 mm x 35 mm x 6 mm angle iron, 60 cm long and fixing the same in ground as required.

Earthing with copper earth plate 600 mm X 600 mm X 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 meter long, digging etc. with charcoal/ coke and salt as required.

Providing and fixing 25 mm X 5 mm copper strip in 40 mm dia G.I. pipe from earth electrode including connection with brass nut, bolt, spring, washer excavation and re-filling etc. as required.

Providing and fixing 25 mm X 5 mm copper strip on surface or in recess for connections etc. as required.

Earthing with G.I. earth plate 600 mm X 600 mm X 6 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 meter long, digging etc. with charcoal/ coke and salt as required.

Providing and fixing 25 mm X 5 mm G.I. strip in 40 mm dia G.I. pipe from earth electrode including connection with G.I. nut, bolt, spring, washer excavation and re-filling etc. as required.

Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as required.

Providing and fixing M.V. Danger notice plate of 200 mm x 150 mm, made of mildsteel, at least 2 mm thick, and vitreous enameled white on both sides, and with inscription in single red colour on frontside as required.

Providing and fixing H.T. Danger notice plate of 250 mm x 200 mm, made of mildsteel, at least 2 mm thick, and vitreous enameled white on both sides, and with inscription in single red colour on frontside as required.

Buy back items " As is where is basis":

Salvage value of Existing old 630 Amps VCB / HT Panel 05 nos. "As is where is basis" including dismantling etc. complete as required (Make: Crompton)

H N TRADRS AND ENGINEERS (BID ID -876681)

Electro Tech Systems (BID ID -875718)