Providing Power connection to the 6 Nos new Compressors near NCCRD building inside IITM Premises

Amount

DISTRIBUTION TRANSFORMER

Supply, Erection, Testing and Commissioning of 2000kVA , 11kV /0.433kV Distribution type mineral oil filled ONAN type outdoor type transformer with complete fittings and accessories as per the enclosed specifications.

(i) Supply

(ii) Erection

BUS-TRUNKING

Supply, Installation, Testing and Commissioning of 3200A TPN fabricated air insulated bus trunking suitable for 415V 3 phase 4 wire 50HZ AC supply system ( between transformer LT side and up to the incomer of the MV Panel) of Aluminium busbars complete with bends, expansion joints, fire barriers , flexible etc end connections at both ends, earthing with 2 runs of copper earth of size 25 x 5mm strips etc including necessary supports etc as per specifications as required.

CABLES & TERMINATIONS

Supplying and Laying of 3C x 240 Sqmm 11kV (E) HT UG Aluminium armoured XLPE Power cable in trench of 50cm wide and 100cm depth including earth work excavation in all soils and sub soils spreading 12 cm thick river sand on top of the cable to cover it completely inside the trench and brick cover protection top of the river sand/cable using burnt bricks and back filling, consolidated in a regular interval of 25cm thick rammed and complying with standard specification. The rate should be inclusive of Cable route markers at regular interval of 50m.

Supplying and Terminating the ends of 3C x 240Sqmm 11kV (E) HT UG Aluminium armoured XLPE Power cable with suitable lug / Ferrules socket and using necessary jointing materials with RPG make heat Shrinkable Joint Kit.

Supplying and Laying of 3.5C x 400 Sqmm LT UG Aluminium armoured XLPE Power cable in a perforated cable tray with suitable clamps.

Supplying& Laying of 3.5C x 400 Sqmm PVC XLPE insulated alu. Conductor armored LTUG cable in a 50 mm to 100 mm dia HDPE DWC pipe in a trench of 50cm wide and 75cm depth including earth work excavation in all soils and sub soils and back filling, consolidated in a regular interval of 25cm thick rammed and complying with standard specification.

Supplying and making end termination for 3.5C x 400 Sqmm alu. Conductor LT UG cable using suitable compression gland with required copper ferulles / socket and other jointing materials

CABLE TRAY

Supply and Fixing 350 mm x 75 mm 14 SWG Hot Dip Galvanized powder coated perforated cable trays in a suitable support from the ground using necessary Channels .

MV PANELS

Supply , Erection,Testing and commissioning of suitable size extendable floor mounting cubical type following LT Main Panel board suitable for 415V 3ph 4 wire 50Hz AC supply system fabricated in a compartmentalized design from CRCA sheet steel of 2mm thick for frame works and cover with 3mm thick removable gland plate ,cleaning and finishing with 7 tank process for powder coating with siemens grey having extensible type TPN copper alloy busbar of suitable capacity as per the incomer ACB /MCCB/SDF ratings with DMC/SMC busbar suppotrs with short circuit withstand capacity of 31MVA / 1Second , bottom base channel of 100mmX 50mm X 5mm. .The In/Out going Cable entry should be from the rear side of the panel.

BUS BARS

Bus bars will be electrolytic copper , air insulated , R,Y,B, N(Black) PVC sleeved capable of carrying full load current for all the 3 phases and neutral continiously. The current density of copper shall be designed for 1.2A per sqmm. The bus chamber should have proper air ventilators.

EARTHING

2 separate run of 25 x 3 mm copper earth bus painted in green colour should be provided all along the panel and connected to the main grid. Interconnectios should be taken to metering chamber, MCCB's, ACB's, FSU's etc sothat all current carrying components are effectively earthed.

ADDITIONAL SCOPE OF WORK

The scope of work includes minor civil works like breaking of concrete floors ,construction of masonary trench and suitable MS channels for the proposed panel as per the instruction from the Engineer in Charge.Necessary Panel drawings , QAP and GTP have to be approved by the Engineer incharge before fabrication.

PANEL I ( To be installed at Substation)

Incomer

3200 FP ACB 75kA -1No (MDO independent manual spring closing mechanism-1No, microprocessor release for o/c , e/f and short circuit protection-1No, breaker ON/OFF/Trip indication Lamps) .

Outgoing

2000A TP ACB 50kA (MDO independent manual spring closing mechanism-1No, microprocessor release for o/c , e/f and short circuit protection-1no, breaker ON/OFF/Trip indication Lamps with 96sqmm digital Ammeter with required CT's)-1 set

800A TP ACB 50kA (MDO independent manual spring closing mechanism-1no, microprocessor release for o/c , e/f and short circuit protection-1no, breaker ON/OFF/Trip indication Lamps with 96sqmm digital Ammeter with required CT's)-1 set

3200A copper bus bars for R,Y,B and N

The incomer should be provided with 3 phase indication lamps with toggle switch-1set, microprocessor based digital multi function meter with communication port( facility for active and reactive power measurements ) with required CTs and control fuses etc-1set .Necessary Spreaders / extended copper bus bars of suitable rating with required holes should be provided for the cable and bus bar terminations.The handle should be pad lockable type in both ON/OFF positions.The work should be inclusive of removal of existing LT panel including cable and re-install the panel/ re -termination of cables after panel alteration works . Also providing interlocking arrangement with the existing MV panel, bus coupler and the new MV panel by providing 3 locks and 2 keys arrangement.

PANEL -II ( to be installed at the Terrace of Compressor Room- Kiosk Type Panel )

Incomer

2000 TP ACB 50kA -1No (MDO independent manual spring closing mechanism-1No, microprocessor release for o/c , e/f and short circuit protection-1No, breaker ON/OFF/Trip indication Lamps) .

Outgoing

630A TP ACB 50kA (MDO independent manual spring closing mechanism-1No, microprocessor release for o/c , e/f and short circuit protection-1No, breaker ON/OFF/Trip indication Lamps with 96sqmm digital Ammeter with required CT's)-6 Nos

2000A copper bus bars for R,Y,B and N

The incomer should be provided with 3 phase indication lamps with toggle switch-1set, microprocessor based digital multi function meter with communication port( facility for active and reactive power measurements ) with required CTs and control fuses etc-1set .Necessary Spreaders / extended copper bus bars of suitable rating with required holes should be provided for the cable and bus bar terminations.The handle should be pad lockable type in both ON/OFF positions.

EARTHING

Supply, Erection, Testing and Commissioning of Cast iron pipe and copper plate earth as per IS - 3043 - 1987 including excavation of soil and sub soil , back filling with equal layers of salt and charcoal and the excavated soil , ramming, consolidating, Masonry construction, heavy duty cover slab etc. The CI pipe should be 100mm dia and 3mt long bolted with 600 x 600 x 3 mm thick copper plate at the bottom. 2R of 50 x 3 mm copper flats should be taken from the copper plate to the top of the CI pipe and clamping with suitable clamps

Supplying and laying of following size G.I strip at 0.50 metre below ground as strip earth electrode, including connection/ terminating with G.I. nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50mm)

100 x6 mm GI flat

50 x 6 mm GI flat

Supplying and replacement of existing 30/75/5A CT with 100/200/5A Current Transformers with dual ratio and dual core in the existing 11kV HT VCB's with necessary inter connections between panel, relay and CT's as per IS 2705 as per the enclosed Specification.

Shifting of the following substation equipment from existing substation by removal of existing HT /LT UG Cables complete from the soil or subsoil up to end terminations , earth connections etc and reerect the equipment in other substation and reterminating the existing/new HT/LT cables with required terminations, earth connections ( new HT/LT cables will be supplied by IIT if required)with minor trench civil works.The rate should be inclusive of transport, labour/ Machineries and all tools as required.

500kVA 11/0.433kV Distribution Transformer,

Obtaining Safety Lisence for the New Installations of HT/LT equipments by submitting necessary as built drawings to CEA after completion of all works.

Sabari and Leon Electricals Pvt Ltd

Delhi Electrical Construction

ESSENN POWER CONTROLS PVT LTD