Turnkey contract for Design, Supply, Installation and Commissioning of 66/11KV Substation Renovation and Modernization-Pkg1

NEW POWER TRANSFORMER & TRANSFORMER BAY

POWER TRANSFORMER : 66/11 KV; 10 MVA; 3- phase Star/delta with onload tap changer oil filled transformer with automatic maintenance-free type dehydrating breather, accessories for protection and indication, first filling of oil complete with neutral C.T. and all standard devices and fittings

POWER TRANSFORMER : 66/11 KV; 7.5 MVA; 3- phase Star/delta with onload tap changer oil filled transformer with automatic maintenance-free type dehydrating breather, accessories for protection and indication, first filling of oil complete with neutral C.T. and all standard devices and fittings

CIRCUIT BREAKER : SF6, outdoor type, 72.5 KV, 800 A , 13.1 KA rated short circuit complete with operating mechanism and first filling of SF6 gas with GI supporting structure

CURRENT TRANSFORMER: 72.5 KV, 13.1 kA, outdoor type, single Phase, 3 core current transformer having ratio 400-300-200/1 - 1-1 and of accuracy class and burden of 30 VA with first tilling of oil and complete with terminal connectors

ISOLATOR with Earthing Blades : 72.5 kV, 800 amps rated current 12.5 kA short time rating, triple pole, gang operated outdoor type with motor operated mechanism, terminal connectors, earthing connector with earthing blades / switch

ISOLATOR with out Earthing Blades : 72.5 kV, 800 amps rated current 12.5 kA short time rating, triple pole, gang operated outdoor type with motor operated mechanism, terminal connectors, earthing connector without earthing blades / switch

LIGHTNING ARRESTOR: 60 kV Lightning arrestor, station type, complete with insulating base and surge monitors & connector terminals connection.

CONTROL & RELAY PANEL : 66 kV simplex type control and relay panel for Transformer with static 3 O/C + E/F; trip circuit supervision, master trip relays, digital recording and indicating instruments, alarm; TTB, AC/DC failure indication; mimic, panel illumination etc. with solid state duo bias transformer differential relay and energy metering , SCADA compatible

CONTROL CABLES: 1.1 kV grade heavy duty PVC insulated sheathed copper conductor armoured cable of size:

12 x 1.5 sq. mm

2 x 2.5 sq. mm

4 x 1.5 sq. mm

8 x 1.5 sq.mm

POWER CABLE: 11 KV , Aluminium conductor, XLPE insulsted, Insulation semiconductering and copper tape screened, PVC sheathed (ST-2 pvc), galvanised steel strip armoured, PVC outer sheathed (ST-2 PVC) conferming to IS:7098, 3x 400 sqmm

Heat shrinkable outdoor termination kit for 11 kV, XLPE/Al, screneed, armoured cable ; 3x 400 sqmm

Heat shrinkable indoor termination kit for 11 kV, XLPE/Al, screneed, armoured cable ; 3x 400 sqmm

Transformer bay Switchyard Support Structures (MS Lattice Structures with B&N) complete with ACSR Wolf Conductor busbars, 66 kV Disc Insulator 70 KN with hardware fittings and Tension Clamps for Wolf , 66 KV Post Insulators with accessories and UPG Clamps for wolf and Painting Matarials for structures (Red oxide & Aluminium Paint), complete as per approved layout drawing

Transformer bay earthing system including Earth Mat as per approved design complying with IS : 3043

Lighting system for transformer bay including LED floodlighting 35W 6000K with waterproof fixture incl all accessories (08 Nos), 8 m Street Lighting G.I Poles, 2x6 sqmm 1000 V grade PVC/PVC copper cables, termination lungs, GI Conduits 20 mm and LT AC Panel for switchyard Lighting with light sensor / solenoid switch

GI Support Structures for Circuit Breaker, Current Transformers (set), Lighting Arrestors (Set) and Isolators at Transformer Bay

REVAMPING OF EXISTING 66/11 kV POWER TRANSFORMER (Capacity Upto 10 MVA)

Transformer Oil 50KV grade Conforming to IS: 335/93

Automatic maintenance-free type dehydrating breather including moisture sensor, heating element, controller and all accessories with with silica gel

Main oil tank and other gaskets , leak repair sealants, cleaning materials and necessary replacement devices including pressure relief valve, mercury switch and accessories for revamping power transformer

11 kV SWITCHGEAR AND CABLES

11 KV Switchgear Panel comprising 800 Amp indoor RT-DAS / SCADA compatible communication enabled VCB Panels with Vaccum Circuit Breaker (horizontal isolation and horizontal draw out type), motorized with spring charging operating mechanism, complete with CTs & PTs, protective relays, trip closing coils, NO+NC auxiliary contacts, anti pumping devices, mechanical counters and mechanical position indicator, control wiring, digital multifunction power meter, analog voltage and current measurement , indication lamps, class 0.5s Digital Energy Meter and all accessories for :

Incomer Feeder Panel

Bus Coupler Panels

Outgoing Feeder Panel

11 KV (E) Stranded compact circular aluminium conductor screened with extruded semiconductering compound, XLPE insulsted, Insulation screened with extruded semiconductering compound in combination with copper tape, cores laid up, PVC sheathed (ST-2 pvc), galvanised steel strip armoured, and overall PVC sheathed (ST-2 PVC) BLACK CABLE conferming to IS:7098 latest amendments;

3 x 300 sqmm

3 x 240 sqmm

3 x 185 sqmm

Heat shrinkable Indoor type end termination kit for 11 KV (E) 3 Core XLPE cable including screen and armour earth kits, lugs and all accessories for cable size;

3 x 300 sqmm

3 x 240 sqmm

3 x 185 sqmm

Heat shrinkable outdoor type end termination kit for 11 KV (E) 3 Core XLPE cable including screen and armour earth kits, lugs and all accessories for cable size;

3 x 300 sqmm

3 x 240 sqmm

3 x 185 sqmm

11kV Tee-Off system (Feeder Termination Structues)

9 m Long Steel Lattice Structure fabricated with 50 x 50 x 6 mm M.S. angles and 10 mm dia MS rods including bolts, nuts and washers as per specifications and drawing complete.

G.I .channel 75X40X 4.8 mm X2.2 m long

Back clamps of 50x50x6 mm x 300 mm length G.I Angle for holding channel

G.I nuts & bolts of 16mm dia.X 40mm length.

11 KV, 3 Pole 400 A, Gang Operated Air Break Switch Unit, tilting type, three insulator per phase, complete with operating handle, all fittings confirming to IS:9920 & IS: 9921

11 KV, 3 Pole, 400 A Drop Out Fuse Cutout Unit with fuse links rated as applicable complete with all accessories confirming to IS: 9385

9 KV, 10 KA Single pole unit Metal Oxide Gapless Surge Arrestor with earth lead disconnector for 11 KV, 50 c/s solidly earthed neutral system confirming to IS:3070 (Part III) R

11 KV Polymeric Tension Insulator, 45 KN with Clamps, Nuts & Bolts and Tension Hardware

11 KV Pin Insulator (Polymer) with G.I Pin & fittings as required

Earthing: 25 x 3 mm G.I. Flat x 10 m with perforated G.I. pipe of 19mm dia x 95 cm. and 38 mm dia x 250 cm combination with Reducer, Funnel and Cover Arrangement and Salt (80 Kgs) & Charcoal (3 bags) Combination for earth pit

Guy Assembly complete with 7/10 SWG Stay Wire, 140x85 mm H.T Guy Insulator, 18mm diameter Stay Rod 1.8 mtrs Long with bow thimble, turn buckle & 300x300x6mm anchor plate

110 mm dia HDPE pipe, PE-100 material grade, PN 10, SDR 17, wall thickness 6.6 mm for cable riser on terminal structure

GI Clamps for fixing 11 kV Cables / HDPE Pipe on Channels with GI bolts and nuts

G.I. Barbed Wire for anti climbing device @ 2 kgs/pole

11 kV Caution Board

Red oxide paint @ 1.5 ltr/ pole (9 mtr)

Aluminium paint @ 1.0 ltr / pole (9 mtr)

SUB-STATION AUXILIARIES AND SITE WORKS

Battery Bank : Dry type (VRLA) maint free battery packs of capacity 200 AH 55 nos x 2 volt with terminal voltage of 110 volt complete with all accessories as required.

Battery charger set having facility for both trickle and boost charging complete with necessary protection and other instruments 110V

Fire fighting Equipments: PORTABLE FIRE EXTINGUISHERS conforming to IS 2190: 1992

4.5 Kg DCP Type

4.5 Kg CO2 Type

22.5 Kg CO2 type

12 Fire buckets with stand

ACDB: 415V ACDB totally enclosed metal clad type complete with copper bus bar, cable socket, 400A MCCB for incoming and required MCB of 32A DP, 64A FP for outgoing to 66KV & 11KV CR panels in control room.

DCDB: 110V DCDB totally enclosed metal clad type complete with copper bus bar, cable socket, 200A MCCB for incoming and required MCB of 32A DP, 64A FP for outgoing to 66KV & 11KV CR panel in control

Sub-Station Earthing materials including earth rods, strips, connectors, couplings for Inspection, testing and restoring exisitng earthing system for Incomer, Outgoing feeders bays , existing power transformers bays including all earthing connections to existing earthmat

Description of Work / Item(s)

Amount

NEW POWER TRANSFORMER & TRANSFORMER BAY

POWER TRANSFORMER : 66/11 KV; 10 MVA; 3- phase Star/delta with onload tap changer oil filled transformer with automatic maintenance-free type dehydrating breather, accessories for protection and indication, first filling of oil complete with neutral C.T. and all standard devices and fittings

POWER TRANSFORMER : 66/11 KV; 7.5 MVA; 3- phase Star/delta with onload tap changer oil filled transformer with automatic maintenance-free type dehydrating breather, accessories for protection and indication, first filling of oil complete with neutral C.T. and all standard devices and fittings

CIRCUIT BREAKER : SF6, outdoor type, 72.5 KV, 800 A , 13.1 KA rated short circuit complete with operating mechanism and first filling of SF6 gas with GI supporting structure

CURRENT TRANSFORMER: 72.5 KV, 13.1 kA, outdoor type, single Phase, 3 core current transformer having ratio 400-300-200/1 - 1-1 and of accuracy class and burden of 30 VA with first tilling of oil and complete with terminal connectors

ISOLATOR with Earthing Blades : 72.5 kV, 800 amps rated current 12.5 kA short time rating, triple pole, gang operated outdoor type with motor operated mechanism, terminal connectors, earthing connector with earthing blades / switch

ISOLATOR with out Earthing Blades : 72.5 kV, 800 amps rated current 12.5 kA short time rating, triple pole, gang operated outdoor type with motor operated mechanism, terminal connectors, earthing connector without earthing blades / switch

LIGHTNING ARRESTOR: 60 kV Lightning arrestor, station type, complete with insulating base and surge monitors & connector terminals connection.

CONTROL & RELAY PANEL : 66 kV simplex type control and relay panel for Transformer with static 3 O/C + E/F; trip circuit supervision, master trip relays, digital recording and indicating instruments, alarm; TTB, AC/DC failure indication; mimic, panel illumination etc. with solid state duo bias transformer differential relay and energy metering , SCADA compatible

CONTROL CABLES: 1.1 kV grade heavy duty PVC insulated sheathed copper conductor armoured cable of size:

12 x 1.5 sq. mm

2 x 2.5 sq. mm

4 x 1.5 sq. mm

8 x 1.5 sq.mm

POWER CABLE: 11 KV , Aluminium conductor, XLPE insulsted, Insulation semiconductering and copper tape screened, PVC sheathed (ST-2 pvc), galvanised steel strip armoured, PVC outer sheathed (ST-2 PVC) conferming to IS:7098, 3x 400 sqmm

Heat shrinkable outdoor termination kit for 11 kV, XLPE/Al, screneed, armoured cable ; 3x 400 sqmm

Heat shrinkable indoor termination kit for 11 kV, XLPE/Al, screneed, armoured cable ; 3x 400 sqmm

Transformer bay Switchyard Support Structures (MS Lattice Structures with B&N) complete with ACSR Wolf Conductor busbars, 66 kV Disc Insulator 70 KN with hardware fittings and Tension Clamps for Wolf , 66 KV Post Insulators with accessories and UPG Clamps for wolf and Painting Matarials for structures (Red oxide & Aluminium Paint), complete as per approved layout drawing

Transformer bay earthing system including Earth Mat as per approved design complying with IS : 3043

Lighting system for transformer bay including LED floodlighting 35W 6000K with waterproof fixture incl all accessories (08 Nos), 8 m Street Lighting G.I Poles, 2x6 sqmm 1000 V grade PVC/PVC copper cables, termination lungs, GI Conduits 20 mm and LT AC Panel for switchyard Lighting with light sensor / solenoid switch

GI Support Structures for Circuit Breaker, Current Transformers (set), Lighting Arrestors (Set) and Isolators at Transformer Bay

REVAMPING OF EXISTING 66/11 kV POWER TRANSFORMER (Capacity Upto 10 MVA)

Transformer Oil 50KV grade Conforming to IS: 335/93

Automatic maintenance-free type dehydrating breather including moisture sensor, heating element, controller and all accessories with with silica gel

Main oil tank and other gaskets , leak repair sealants, cleaning materials and necessary replacement devices including pressure relief valve, mercury switch and accessories for revamping power transformer

11 kV SWITCHGEAR AND CABLES

11 KV Switchgear Panel comprising 800 Amp indoor RT-DAS / SCADA compatible communication enabled VCB Panels with Vaccum Circuit Breaker (horizontal isolation and horizontal draw out type), motorized with spring charging operating mechanism, complete with CTs & PTs, protective relays, trip closing coils, NO+NC auxiliary contacts, anti pumping devices, mechanical counters and mechanical position indicator, control wiring, digital multifunction power meter, analog voltage and current measurement , indication lamps, class 0.5s Digital Energy Meter and all accessories for :

Incomer Feeder Panel

Bus Coupler Panels

Outgoing Feeder Panel

11 KV (E) Stranded compact circular aluminium conductor screened with extruded semiconductering compound, XLPE insulsted, Insulation screened with extruded semiconductering compound in combination with copper tape, cores laid up, PVC sheathed (ST-2 pvc), galvanised steel strip armoured, and overall PVC sheathed (ST-2 PVC) BLACK CABLE conferming to IS:7098 latest amendments;

3 x 300 sqmm

3 x 240 sqmm

3 x 185 sqmm

Heat shrinkable Indoor type end termination kit for 11 KV (E) 3 Core XLPE cable including screen and armour earth kits, lugs and all accessories for cable size;

3 x 300 sqmm

3 x 240 sqmm

3 x 185 sqmm

Heat shrinkable outdoor type end termination kit for 11 KV (E) 3 Core XLPE cable including screen and armour earth kits, lugs and all accessories for cable size;

3 x 300 sqmm

3 x 240 sqmm

3 x 185 sqmm

11kV Tee-Off system (Feeder Termination Structues)

9 m Long Steel Lattice Structure fabricated with 50 x 50 x 6 mm M.S. angles and 10 mm dia MS rods including bolts, nuts and washers as per specifications and drawing complete.

G.I .channel 75X40X 4.8 mm X2.2 m long

Back clamps of 50x50x6 mm x 300 mm length G.I Angle for holding channel

G.I nuts & bolts of 16mm dia.X 40mm length.

11 KV, 3 Pole 400 A, Gang Operated Air Break Switch Unit, tilting type, three insulator per phase, complete with operating handle, all fittings confirming to IS:9920 & IS: 9921

11 KV, 3 Pole, 400 A Drop Out Fuse Cutout Unit with fuse links rated as applicable complete with all accessories confirming to IS: 9385

9 KV, 10 KA Single pole unit Metal Oxide Gapless Surge Arrestor with earth lead disconnector for 11 KV, 50 c/s solidly earthed neutral system confirming to IS:3070 (Part III) R

11 KV Polymeric Tension Insulator, 45 KN with Clamps, Nuts & Bolts and Tension Hardware

11 KV Pin Insulator (Polymer) with G.I Pin & fittings as required

Earthing: 25 x 3 mm G.I. Flat x 10 m with perforated G.I. pipe of 19mm dia x 95 cm. and 38 mm dia x 250 cm combination with Reducer, Funnel and Cover Arrangement and Salt (80 Kgs) & Charcoal (3 bags) Combination for earth pit

Guy Assembly complete with 7/10 SWG Stay Wire, 140x85 mm H.T Guy Insulator, 18mm diameter Stay Rod 1.8 mtrs Long with bow thimble, turn buckle & 300x300x6mm anchor plate

110 mm dia HDPE pipe, PE-100 material grade, PN 10, SDR 17, wall thickness 6.6 mm for cable riser on terminal structure

GI Clamps for fixing 11 kV Cables / HDPE Pipe on Channels with GI bolts and nuts

G.I. Barbed Wire for anti climbing device @ 2 kgs/pole

11 kV Caution Board

Red oxide paint @ 1.5 ltr/ pole (9 mtr)

Aluminium paint @ 1.0 ltr / pole (9 mtr)

SUB-STATION AUXILIARIES AND SITE WORKS

Battery Bank : Dry type (VRLA) maint free battery packs of capacity 200 AH 55 nos x 2 volt with terminal voltage of 110 volt complete with all accessories as required.

Battery charger set having facility for both trickle and boost charging complete with necessary protection and other instruments 110V

Fire fighting Equipments: PORTABLE FIRE EXTINGUISHERS conforming to IS 2190: 1992

4.5 Kg DCP Type

4.5 Kg CO2 Type

22.5 Kg CO2 type

12 Fire buckets with stand

ACDB: 415V ACDB totally enclosed metal clad type complete with copper bus bar, cable socket, 400A MCCB for incoming and required MCB of 32A DP, 64A FP for outgoing to 66KV & 11KV CR panels in control room.

DCDB: 110V DCDB totally enclosed metal clad type complete with copper bus bar, cable socket, 200A MCCB for incoming and required MCB of 32A DP, 64A FP for outgoing to 66KV & 11KV CR panel in control

Sub-Station Earthing materials including earth rods, strips, connectors, couplings for Inspection, testing and restoring exisitng earthing system for Incomer, Outgoing feeders bays , existing power transformers bays including all earthing connections to existing earthmat

Description of Work / Item(s)

Amount

R&M of Sub-Station

Survey and preparation of foundation and layout designs for new transformer bays at existing substations including layout drawings and schedules for approval of PDS.

Description of Work / Item(s)

Amount

CIVIL WORKS

NEW POWER TRANSFORMER & TRANSFORMER BAY

Site Levelling for Tr Bay

Porous PCC ( 1:4:8 Mix) and Gravelling for TR bay Switchyard (Area : 150 Sqm )

RCC Foundation for 66/11 KV; 10 MVA Power Transformer

RCC Foundation for 66/11 KV; 7.5 MVA Power Transformer Foundation

RCC Equipment Foundations for Circuit Breaker, Current Transformers, Isolators, Ligntning Arresters and Switchyard lattice structures in Tr. Bay

PCC / Brick Work Cable trench 900 mmm x 600 mm for control and power cables with cable tray / ladder and trench cover of 6mm GI chequered plate installed with M.S angle supports of 50 mmx 50mmx 6 mm, complete

11 kV SWITCHGEAR AND CABLES

11kV Tee-Off system (Feeder Termination Structues)

Concreting of 9 m Lattice Structure in 1:4:8 cc in 0.9x0.9x1.75 mtrs Pit, Construction of parapet 0.61 x 0.61x0.153 mtrs. In 1:3:6 cc i/c 12mm cement plaster of parapet in 1:4 Mix.

Concreting of H.T Guy Assembly in 1:4:8 cc in 0.40x0.40x1.05mtrs P

Provisional Sum: Civil works for modifications / extensions of existing 66/11 kV sub-station buildings and facilities as per Power Department, Sikkim appoved rates (Payments based on actuals). Bidder to Enter value"0" in Coloumn M.

SUB-STATION AUXILIARIES AND SITE WORKS

Porous PCC ( 1:4:8 Mix) and Gravelling for Switchyard (Area : 600 Sqm )

ERECTION, TESTING AND COMMISIONING

NEW POWER TRANSFORMER & TRANSFORMER BAY

66/11 KV; 10 MVA Power Transformer with OLTC Complete

66/11 KV; 7.5 MVA Power Transformer with OLTC Complete

60 kV Lighting Arrester with all accessories, structures, earthing, terminal connectors complete.

72.5 kV, 800 A Isolators with motor operated system, all accessories, DC Supply, structures, control cabling, earthinhg, terminal connectors, complete.

72.5 KV current transformers 400-300-200/1 -1-1 with all accessories, structures, control cabling, earthing and terminal connectors complete.

72.5 KV, 800 A outdoor circuit breaker with all accessories, DC supply, control cabling, structures, earthing, terminal connectors complete.

66 KV Control and Relay Panel with all accessories, DC supply, protections, control cabling, earthing, complete.

Tr. Bay Switchyard : Erection of Lattice Structions with painting, fitting and fixing and stringing of 66kV busbar with fitting of disc/post insulators, all types of hardwares, all types of clamps complete.

Transformer bay earthing system including Earth Mat, complete

Switchyard lighting system including all fittings, poles / structures, cables & conduits, LT AC Panel, complete.

REVAMPING OF EXISTING 66/11 kV POWER TRANSFORMER (Capacity Upto 10MVA)

Replacement of main oil tank and other gaskets

Replacment of existing breather and instllation of automatic maintenance-free type dehydrating breather with silica jel and all devices, supply, wiring and controller, complete

Cleaning of conservator tank and sealing transformer oil leaks through pinholes, welding defects, radiator cooling fin corrosion or rust.

Operation testing of Bucholz Protector along with replacement of mercury switch,inspection of explosion vent,testing & cliberation of temperature indictors at marshalling box,checking of IR values of condenser bushing, replacement of Pressure Relief Valve (if required).

Replacment of transformer oil and oil filtration until relative humidity < 5 ppm over two consecutive cycles

11 kV SWITCHGEAR AND CABLES

11kV indoor switchgear panels for incoming & outgoing feeders and bus coupler , including all controls, protection, aux supply, accesosories, cable terminations, earthing and all works, complete

Installation of 11 kV Cables underground or in trenches including indoor and outdoor terminations

3 x 300 sqmm

3 x 240 sqmm

3 x 185 sqmm

11 kV Tee Off : Outgoing feeder termination structure including erection and painting of lattice structures, installation of all accessories including channel cross arms, insulators, Gang Operated Air Break Switch, Dropout Fuse Cutouts and Links, earthing, clamps, anti climbing device, HDPE pipes, cable riser and terminations

SUB-STATION AUXILIARIES AND SITE WORKS

Installation of battery bank 110 V, 200 Ah, battery charger, ACDB and DCDB including all cabling and controls

Installation of Portable Fire Extingushers and other fire fighting equipment

Substation Earthing

Removal / dismantling of required existing switchgear / accessories /cables etc. for replacement for augmentation / renovation of the substation and handing over removed equipment to PDS at site

Description of Work / Item(s)

Amount

Total Price CIP in EUR (Schedule 1)

Total Price CIP in USD (Schedule 1)

Total Price CIP in JPY (Schedule 1)

Total Price of Taxes & Duties in INR (Schedule 1)

Total Price EXW in INR (Schedule-2)

Total Price of Design Services in INR ( Schedule-3)

Total Price of Incidental Expenses in INR( Schedule-4A)

NORDEN DORJEE SANGDERPA (BID ID -2861)

NORDEN DORJEE SANGDERPA (BID ID -2861)

NORDEN DORJEE SANGDERPA (BID ID -2861)

NORDEN DORJEE SANGDERPA (BID ID -2861)

NORDEN DORJEE SANGDERPA (BID ID -2861)

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