Providing HT/LT Equipment and allied cable works for the newly constructed substation near G1 type Quarters inside IITM Premises

Amount

DISTRIBUTION TRANSFORMER

Supply, Erection, Testing and Commissioning of 1000kVA 11kV /433V mineral oil filled ONAN type outdoor type Distribution Transformer with complete fittings and accessories as per the enclosed Technical Specification.

Supply

Erection

BUS BAR TRUNKING

Supplying, installing by suspension on ceiling, testing and commissioning of 2000A 50kA SC for 1 Sec capacity Sandwich Type Bus Bar Trunking for use on 3 phase 4 wire 415 volts, 50Hz A.C. supply with metal clad enclosure having IP-65 rating after fixing all accessories, made of 1.6mm thick steel sheet duly powder coated in convenient sections complete with 4 Nos aluminium bus bars having current density of 130 A/ sq cm at nominal current rating, necessary joints, elbow joints & expansion joints and bends, fire barrier at each floor, provision of tapping at every metre, adopter box and copper flexible for joints, continuous earthing with 2 Nos aluminium strip of suitable size (one on each side) including, G.I. clamping brackets, suspenders, angle iron bracket, steel fasteners.

CABLES AND TERMINATIONS

Supplying and Laying of following sizes 11kV (E) HT UG Aluminium armoured XLPE Power cable in a 100 mm dia HDPE DWC pipe in a trench of 50cm wide and 100cm 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.The rate should be inclusive of cable route markers at every 50m interval as decided by the Engineer Incharge

3C X 120 sqmm

3C X 240 sqmm

Supplying and making Straight Through Joints for the following sizes of 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.

3C x 240 Sqmm

Supplying and Terminating the ends of the following 11kV (E) HT UG Aluminium armoured XLPE Power cable with suitable lug / Ferrules sockets and necessary jointing materials with Rhychem heat Shrinkable Joint Kit.

3C X 120 sqmm

3C X 240 sqmm

Supplying& Laying of following sizes 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.

3.5c X 400 sq.mm ( Alu)

3.5c X 240 sqmm ( Alu)

3.5c X 150 sqmm ( Alu)

2R x 4C x2.5 Sqmm (Cu)

Supplying and making end termination for following sizes alu. Conductor LT UG cable using suitable compression gland with required copper ferulles / socket and other jointing materials

3.5c X 400 sq.mm( Alu)

3.5c X 240 sqmm ( Alu)

3.5c X 150 sqmm( Alu)

2R x 4C x2.5 Sqmm (Cu)

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

Earthing the installation with the following sizes of earth wires. The rate shall be inclusive of spacer clamp for main earth flat suitable clamping with the MS flats for earth wires including crimping of socket etc.or laying below 0.5m from ground level including earth work excavation and refilling the excavated soil.

50 x 10 mm GI Flat

50 x 5 mm GI Flat

25 x 5mm GI flat

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 , 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 + 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 removal of existing industrial/cubical type panel after disconnection of cable and reconnecting them to the new panel by excavation of earth out side the building ,minor civil works like breaking of concrete floors ,construction of masonary trench and suitable MS 'П' type channels for the proposed panel as per the instruction from the Engineer in Charge.Necessary Panel drawings , QAPand GTP to be got approved from the Engineer incharge before fabrication.

PANEL-1

Incomer

1600A TP ACB- 1nos (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) as two incomers from two different sources.

Bus Coupler

1600A 4P ACB-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/CT's 3 nos and a micro processor based multifunction meter- 1no with suitable wiring for measuring the active and reactive components) as bus coupler and inter locking with 3 locks with two key arrangement.

Outgoings

800A TP ACB -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/CT's 3 nos and a micro processor based multifunction meter- 1no with suitable wiring for measuring the active and reactive components)

630A TPN 35kA MCCB microprocessor release with rotary front operated handle & ON/OFF/TRIP indications - 4 Nos

400A TPN 35kA MCCB microprocessor release with rotary front operated handle & ON/OFF/TRIP indications - 6 Nos

1600A copper bus bars for 3 phases and neutral

3 phase indication lamps with toggle switch-1NO, microprocessor based digital multi function meter with communication port and the facility for active and reactive power measurements -1set with required CTs and control fuses etc for each incomers and BC.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 providing mechanical interlocking arrangement by providing 3 locks and 2 keys arrangement.

Supply

Erection

Shifting of the following substation equipments 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 them in other substation and reterminating the existing/new HT/LT cables with required terminations ( 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 including all accessories

4 Panel 800A HT VCB- 1 Set including MS Channels

440V MV Panel comprising Incomer Feeder 1 & Out going feeder -max 8 Nos.

110V DC Battery and Battery Charger- 1 Set including MS Channels

SAFETY EQUIPMENTS

Supplying & fixing of following Safety equipments as per the instruction of the Engineer Incharge.

2mm thick danger plates made of mild steel with skull and bone mentioning 11kV and 440V - 5 nos each

DCP type fire extinguisher and cylinders fully charged.-2 nos

Safety instruction chart in word duly framed with 5mm glass as required. -1no

GI bucket painted in post office red colour with prior coat of red oxide paint and written with white paint 'FIRE' and mounted on MS angle iron frame with bracket of appro.size & filling of sand etc.-3nos

First aid box kit -1no( with minimum size of 380mm x 380mm)

Shock treat chart duly mounted on a wooden frame( one in English and one in Tamil) with 5mm thick glass required.- 1 set

12mm and 6mm thick rubber mats( each 2 Nos) to withstand 15 kV and 3.3 kV dielectric strength as per IS 15652 - 4 nos

11kV withstand hand gloves- 1 set

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

PRIYA ENTERPRISES ELECTRICALS

Saravanan Control Systems

ROYAL ELECTRICAL WORKS

ESSENN POWER CONTROLS PVT LTD

Delhi Electrical Construction

SS Enterprises Electricals

KEVIN ELECTRICALS PVT LTD

Arkensolutions Pvt Ltd.,