Provision of 2000kVA, 11kV/433V transformer to the newly installed 3PF Super Computers and 300kVA UPS and shifting and re-installation of HT/LT panels to new location in Data Centre at IITM premises

Amount

HT Panel & DISTRIBUTION TRANSFORMER

Supply ,Erection,Testing and Commissioning of 11kV cubicle board comprising of 11kV Draw out type VCB Panel complete with CTs, Numerical type protection relays with serial communication port as per the enclosed Technical Specification.

Single Panel 12kV 800A HT VCB with required copper busbars for interconnections for the attachment with the existing HT Panels with 400/200/5A CT's. ( Preferable: CG make)

(i) Supply

(ii) Erection

Supply, Erection, Testing and Commissioning of 2000kVA , 11kV/433V mineral oil filled ONAN & OCTC outdoor type Distribution transformer with complete fittings and accessories as per the enclosed Technical Specification and IS 1180 (Part-I):2014, Amendment No:4 , LEVEL-1 .

(i) Supply

(ii) Erection

Supply, Installation, Testing and Commissioning of TPN,4W, 3200A Isc 50kA for 1sec Aluminium sand wich design busduct with suitable IP66 canopy for out side portion for 415V 3 phase 4 wire 50HZ AC supply system Class F insulation ( between transformer LT side and up to the incomer of the MV Panel) of Aluminium busbars complete with required bends, expansion joints, fire barriers , copper flexible etc end connections at both ends, earthing with 2 runs of aluminium earth of size 50x 6mm strips etc including necessary supports from ground level and ceiling level as recommended by Engineer in Charge etc as per specifications as required. The charges shall be inclusive of outdoor mounting pole of height 5.2 metres made up of C Channel with RCC foundation between SS and transformer location.

Supply, Installation, Testing and Commissioning of TPN, 4W, 2500A Isc 50kA for 1sec Aluminium sand wich design busduct with suitable IP66 canopy for 415V 3 phase 4 wire 50HZ AC supply system Class F insulation of Aluminium busbars complete with bends, expansion joints, fire barriers , copper flexible etc end connections at both ends, earthing with 2 runs of aluminium earth of size 50x 6mm strips etc including necessary supports from Ground and ceiling level or suitable brackets from wall if required as recommended by Engineer in charge etc as per specifications as required. The charges shall be inclusive of outdoor mounting pole of height 5.2 metre made up of surface C channel with RCC foundation between SS building and transformer location.

Supply, Installation, Testing and Commissioning of TPN, 4W, 2000A Isc 50kA for 1sec Aluminium sand wich design busduct with suitable IP66 canopy for 415V 3 phase 4 wire 50HZ AC supply system Class F insulation of Aluminium busbars complete with bends, expansion joints, fire barriers , copper flexible etc end connections at both ends, earthing with 2 runs of aluminium earth of size 50x 6mm strips etc including necessary supports from Ground and ceiling level or suitable brackets from wall if required as recommended by Engineer in charge etc as per specifications as required. Protective covering using RCC trough of approved design.

CABLES AND TERMINATIONS

Supply & Laying of following sizes 11kV (E) HT UG Aluminium armoured XLPE Power cable in a 150 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 240 sqmm

Supplying and making indoor/ outdoor end termination for 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 240 sqmm

Supplying& Laying of following sizes PVC XLPE insulated alu/cu 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 including cable route markers in every 50m span.

3.5c X 400 sq.mm ( Alu)

3.5c X 240 sqmm ( Alu)

3.5c X 150 sqmm ( Alu)

3.5c X 70 sqmm ( Alu)

3.5c X 35 sqmm ( Alu)

4C x2.5 Sqmm (Cu)

10C x 2.5 Sqmm ( Cu)

Supplying and making end termination for following sizes alu/cu 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)

3.5c X 70 sqmm ( Alu)

3.5c X 35 sqmm ( Alu)

4C x2.5 Sqmm (Cu)

10C x2.5 sqmm ( Cu)

Supplying and making straight thro cable joint for following sizes aluminium or copper Conductor LT UG cable using RPG Heat Shrinkable /cast resin materials with required copper ferulles / socket and other jointing materials.

3.5 core 400 sq.mm ( Heat Shrinkable)

3.5 core 240 sq.mm ( Heat Shrinkable)

3.5 core 150 sq.mm ( Heat Shrinkable)

3.5 core 70 sq.mm ( cast resin)

3.5 core 35 sq.mm ( cast resin)

CABLE TRAY

Supply,Installation, testing and commissioning of powder coated Perforated Cable Tray of 2 mm thick with perforation not more than 17.5% with bend TEE extra and suspended from ceiling or grounting on wall with suitable angle iron supports with GI Angle/Hitech suitable threaded rods with Anchor fasteners, Clamps, bolts,nuts including all the necessary fastener etc., to suit site conditions as required.

450mm x 62.5mm x 2mm

600mm x 62.5mm x 2mm

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.

100 x 10 mm GI Flat

50 x 6 mm GI Flat

25 x 6mm 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 Aluminium 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 Aluminium , air insulated , R,Y,B, N(Black) PVC sleeved capable of carrying full load current for all the 3 phases and neutral . The current density of aluminium shall be designed for 0.8A per sqmm. The bus chamber should have proper air ventilators. EARTHING - 2 separate run of 25 x 5 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.

PANEL-1 ( In BSB Substation) - Incomer - 3200A 4P ACB 75kA -2 nos (MDO independent manual spring closing mechanism, microprocessor release for o/c , e/f and short circuit protection-1no, breaker ON/OFF/Trip indication Lamps) - BUS COUPLER - 3200A 4P ACB 75kA - 2 Nos (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) - Outgoings - 2500A TP ACB 60kA - 3 Nos (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) - 800A TP ACB 50kA -2 Nos (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 - 630A TPN MCCB 36kA with micro processor based trip units ,front operated rotary handle and with ON/OFF/TRIP indications- 6 Nos - 400A TPN MCCB 36kA with micro processor based trip units ,front operated rotary handle and with ON/OFF/TRIP indications- 4 Nos - 3200A Aluminium bus bars 100% for all 3 phases and 50% for neutral

The new MV Panel to be attached with the existing MV Panel with necessary extended aluminium bus bars of suitable rating . Three phase indication lamps with toggle switch-1set, 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 should be provided for each incomers, BC and outgoing ACB up to 800A rating.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 between incomers and BC.Necessary drawing approval ( With QAP and GTP) should be obtaied from the Engineer incharge before fabrication.

PANEL-2 - EB Incomer 1,2 &3 - 2500A 4P ACB 60kA -3nos (EDO independent manual spring closing mechanism, microprocessor release for o/c , e/f and short circuit protection-1no, breaker ON/OFF/Trip indication Lamps) for each incomers - 2500A 4P ACB 60kA -3nos (EDO independent manual spring closing mechanism, microprocessor release for o/c , e/f and short circuit protection-1no, breaker ON/OFF/Trip indication Lamps) for each incomers - DG Incomer 1,2 &3 - 2000A 4P ACB 50kA -3nos (EDO independent manual spring closing mechanism, microprocessor release for o/c , e/f and short circuit protection-1no, breaker ON/OFF/Trip indication Lamps) for each incomers - BUS Coupler - 2000A 4P ACB 50kA - 5Nos (EDO 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 BUS COUPLER ( between two transformer incomers and 3 DG incomers) - Outgoings - 2000A TP ACB 50kA - 2 Nos (EDO independent manual spring closing mechanism-1no, microprocessor release for o/c , e/f and short circuit protection-1no, breaker ON/OFF/Trip indication Lamps) - 1000A TP ACB 50kA - 2 Nos (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) - 800A TP ACB 50 kA- 2 Nos (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) - 630A TPN MCCB 36kA with micro processor based trip units ,front operated rotary handle and with ON/OFF/TRIP indications- 4 Nos - 2500A Aluminium bus bars 100% for 3 phases and 50% for 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 , BC and outgoing ACB up to 800A rating.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 electrical as well as mechanical interlocking arrangement between all DG and all EB incomers.Necessary drawing approval ( With QAP and GTP) should be obtaied from the Engineer incharge before fabrication.

Supplying and replacement of existing 30/75/5A CT with 400/200/5A 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.

Supply, Erection, Testing and Commissioning of110V DC maintenance free Valve Regulated Lead Acid batteries in a polypropylene copolymer container 3phase float cum boost charger and DC board complete with all accessories. (as per specifications enclosed)

Supply

Erection

Shifting of the following substation equipments from existing substation and to be installed in a new location 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.

Removing and Re erection of 1000kVA 11kV/0.433kV Distribution Transformer including relavent MV panel and all accessories in other Substation

Removing & reistallation of 800A HT VCB Panel including Supply of MS Channels including required size & length of the bus bar to attach with the new HT Panel

Removing and Reerection of 4000A MV Panel ( maximum one incomer/ 8 out goings and one buscoupler ) including required size & length of the bus bar to attach with the new HT panel.

Excavation of existing cable trenches to remove the existing LT/HT cables in soft soil depth up to 1.2 metre including getting out the excavated soil, refilling with sand and or good soil after laying the cable or removed cable etc., in layers of 20 cm, ramming, watering and disposal of surplus excavated soil within a lead of 50 metres

Removing the HT/LT UG cable of size up to 400 sq.mm. from the existing trench and relaying the same cable to other trench using removed brick protection/extra protective cover and river sand as required. The earth excavation charges will be paid separately.

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

DCP type fire extinguisher and cylinders fully charged.

Safety instruction chart in word duly framed with 5mm glass as required

2 Nos 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 and water

First aid box kit ( 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

Insulation rubber mats to withstand 15 kVdielectric strength as per IS 15652

11kV withstand hand gloves

Safety License for the New/ shifted installations for HT/LT equipments ( for 3 substations) by submitting necessary as built drawings and documents to CEA after completion of all works.

shiv electric (BID ID -784059)

vk sam engineering (BID ID -778138)

SHANTI ENTERPRISES ELECTRICALS PRIVATE LIMITED (BID ID -784844)

M/s. CHANDRA REDDY ELECTRICALS (BID ID -785495)

S.L. ELECTROMECH PVT. LTD. (BID ID -785152)

THIRUMALAYA ENTERPRISES (BID ID -785679)

Konstelec Engineers Limited (BID ID -785523)