WBPWD/SEWEC /BRED /NIQ-02/2020-21

Amount

Supply & Delivery of 3 Panel Metal Clad, Indoor-type, single tier fully compartmentalized, free standing, Floor role type , Fault MVA 500 MVA (26.3 kA for 3 sec) Internal Arc Classification IAC for minimum 18.4 kA for 0.1 sec, horizontal draw-out type 12kV 630A Vacuuam Circuit breaker having following specifications. (a) Circuit breakers: Type: Air insulated VCB, Autoreclosing, System voltage : 11kV ± 5%, 50 Hz ± 5%, 3 Phase Rated voltage : 12kV, Rated Current : 630A @ 40 °C ambient; Short time rating for 3 sec. : 26.3 kA Short circuit, Insulation level (PF rms /impulse Peak) : 28kV/ 75kVp System ground : Solidly Earthed; Duty cycle : O – 0.3sec – CO– 3min – CO. Break/ Make time : Not more than 4/ 5 Cycle. Range of auxiliary voltage for Closing/ Tripping/ Spring Charging : 85-110%/ 70-110%/ 85-110%. Circuit Breaker should withstand 10000 mechanical operation at full load & 100 no Electrical operation at Full Short Circuit Current. Vacuum Interrupter, VCB and HT panel should be manufactured from OEM. (Make : ABB/Siemens /Biecco/Crompton) Incoming - 1 No., Outgoing - 2 Nos

(b) Bus Bar: Rated Current : 630A @ 40°C ambient. Material : Silver Plated/Tineed, High conductivity electrolytic Copper Bus Bar sleeve: Heat shrinkabale PVC Sleeve with joints having full voltage soft PVC shroude Short time rating for 3 sec. :26.3 kA ........... 1 Set

(c) C.T.: Voltage class : As specified in Circuit Breakers; Type: Cast resin type, Dual Core, Dual Ratio, Barden : 15VA; Class of insulation : Class 'E' or better. Protection core : 5P10, Metering : 0.5, Short time rating for 1 sec. : 26.3 kA Ratio : 100/1+1 (for incoming Breakers), 50/1-1A (for outgoing Breakers) (Make : As per manufacturer's standard)

(d) P.T.: [1 no. Line PT] Rated Voltage : Primary - 11000/√3, Sec. - 110/√3; Type : Cast resin, draw out type, 3-phase, 3-limb complete with HV fuses. Barden : 100VA per phase; Class of insulation : Class 'E' or better, Accuracy Class : 0.5; Rated voltage factor : 1.2 continuous, 1.5 for 30 Secs. PT should be drawout type and service continuty shall be independent of Breaker trolley position. (Make : As per manufacturer's standard) ......1 Set

(e) Relays for protection and control: Incomer: Flush mounted, Drawout, Numerical and multifunctional (With 3 O/C , 1 E/F & 3 VT I/P) with self & remote monitoring features Communication port : RS232 for local pc and RS485 for remote operation Comm. Protocol : MODBUS Memory : Inbuilt memory capable of registering relay fault and disturbance (at least 25 fault records and 75 events records each with 1 mSec accuracy) with waveform during fault. RTC : in-built.

Display : Alphanumeric LCD display with keypad for navigation and setting. Other features: 2 Setting groups, multshot reclosure, undervoltage & overvoltage, CB maintenance & Trip circuit supervision, at least 4 programmable LEDs (Make :ABB/Siemens/Schneider/Crompton ......1 Set Outgoings: Flush mounted, Numerical and multifunctional (With 3 O/C , 1 E/F with self & remote monitoring features Communication port : RS232 for local pc and RS485 for remote operation Comm. Protocol : MODBUS, Display : Alphanumeric LCD display with keypad for navigation and setting. Other features: Trip circuit supervision, at least 4 programmable LEDs (Make : ABB/Siemens/Schneider/Crompton) ......2 Sets

High Speed Master Trip relay (VAJH – 13), 3 Sets for Incoming/Outgoing. 8 Window Annunciation Facia.with ACCEPT, REST & TEST Push Button- 3 Sets for Incoming/Outgoing. Auxillary relay for Transformer faults - VAA33 - 2 sets for Outgoing.

(f) Metering: For Incomer - Digital Ammeter, Digital Voltmeter. For Outgoing - Digital Ammeter. Multifunctional Meter Type : Flush mounted, sealed dustproof construction (Front - IP5X, Rear - IP 4X), multifunctional. Display : Alphanumeric LCD display having capability to display 3 parameters simultaneously with autoscaling scaling capabilities for Kilo, Mega, Giga Display Parameters : Voltage, Current, PF/ Frequency and all energy & power parameters with autoscrolling. Accuracy Class : 0.5S Keypad : Front Panel keypad with auto keypad lock and password protection for setup parameters. Communication port : RS485. Communication Protocol : MODBUS. Memory : Inbuilt memory for keeping back-up of Integrated. Data Other features: Programmable CT/PT Ratio, Built-in Phase analyzer, 2DI/2DO, minimum 256kB memory (Make :ABB/Siemens/ Schneider/ Crompton) ......3 Sets for Incoming/Outgoing.

Other accessories: Power pack of suitable size for 3 panel switchboard, Space heaters, LT panel illumination lamp, Socket, TNC switch, L/R switch, terminals etc for reliable operation of the HT VCB board.

The panel and Breakers must be interlocked so that 1) A closed locked breaker can not be inserted into a panel in the SERVICE positon or can not be taken out from a panel when in SERVICE position 2) A breaker can not be operated in between TEST & SERVICE positon. 3) A breaker can not be inserted into a panel in the SERVICE positon or can not be taken out from a panel when in SERVICE position without connecting the control circuit. 4 If earth is provided it shall be mechanically interlocked with the breaker so that both the bdevice can not be ON simultaneously

Installation of 3 panel, cubical type H.T. switch gear with -PT incl. carriage within a lead of 30 mtr. by placing in position, assembling, lining up, levelling and fixing on floor, fitting & checking all instruments, relays correctly set according to requirement.

Supply, Installation, Testing & Commissioning of 1 MVA, 50 Hz, 11KV/433V voltage ratio, Delta/Star Dyn11 connection, ONAN cooled, Electrolytic Copper Wound, Core type oil type (as per IS 1180 LEVEL 2) Indoor type transformer. [Note; Design should be such that both the transformer can be operated in parrallel, if required] (Price should be inclusive of carriage to the Sub-station building, placing in position and fixing after levelling, fitting all components including S &F of base channels etc.) (Make: Crompton Greaves/ ABB/ VOLTAMP-(Varoda)/ Raychem RPG)

01] Rating of Trafo. : 1000 KVA 02] No Load Voltage Ratio : 11/0.433 KV 03] Quantity : 01 No. 04] Vector Group : Dyn11 05] Tapping Range : +5% to -15% @ 1.25% 06] Tap – Changer : OLTC + RTCC + AVR 07] Steps : 16 Steps / 17 Positions 08] Temp. Rise (Oil/Wdg.) : 40/45°C 09] Total Losses at 50% Load. : 2.79 KW (Max) 10] Total Losses at 100% Load. : 7.7 KW (Max) 11] Impedance at 75 º C : 5% (IS Tol) 12] Insulation Level : HV (KVp/KVrms) : 75/28 LV (KVp/KVrms) : --/03 13] Weights (Approx.) in Kg. : (Approx) Core & Winding : During Details engg Tank & Fittings : Oil (Kg/Ltrs) : Total Weight : 14] Dimensions (Approx.) in mm. : (Sub. To ± 10 % TOL) Length X Breadth X Height : During details engg

15] Termination : H.V side /L.V side /Orientation : Cable Box / Cable Box /180° 16] Fittings & accessories : Oil Temp. Indicator (OTI), Winding Temp. Indicator (WTI),Conservator, Buchholz Relay, Marshaling Box, Breather, silica gel breather, earthing Terminal, R&D plate, rollers, valves. 17] Painting : Epoxy

Supply & laying of 11 KV grade 3 core 240 sq.mm. XLPE (E) HT cable with Al. conductor from consumer's gear to transformer to be laid through masonery trench as per G.S. as per direction of EIC. (Make Polycab/Havells/ Gloster/Nicco) (From HT gear to 2nos Tr, SEDCL Gear to Consumer HT Gear)

Making termination of the 3 core 240 sq.mm. HT cable incl.supply of necy. jointing materials & compound (Heat shrink cable jointing kit of approved make) at switch gear & transformer terminations on H.T. sides incl. testing as per G.S.

S & Laying of 1.1KV grade 1 core 400 sq.mm. PVC/A AL. cable to be laid through masonary / U.G trench as per G.S. (from Transformer to ACB of sub-station L.T. main pannel board and to proposed Building) -(Make Polycab/Havells/ Gloster/Nicco) ( From 2nos Tr to LT panel)

S & F compression type gland complete with brass gland, rubber ring for dust & moisture proof entry of 1 core 400 sq.mm. PVC/A Al. cable incl. finishing the ends by crimping method as per G.S.

Earthing with 80 mm dia GI pipe (TATA-Medium) x 3.0 Mts. long and 1 No. 65 mm x 8 mm galvanized (Hot Dip) steel strip (4 Mts. long), 20 mm dia x 125 mm long galvanized bolt, double nuts, double washers including finishing both ends by making holes etc. and S & F 80 mm dia GI pipe (ISI-Medium) protection (3 Mts. long) to be filled with bitumen partly under the ground level and partly above ground level to an average depth of 6.65 Mts. [For Transformer neutral − (2x2) nos, transformer body − (2x2) nos., consumer gear − 2 nos. Suppliers Gear room-2 nos. LT panel room--2 Nos, ]

Extra for providing masonery enclosure on the top of the earth electrode of overall size 86.36 cm x 86.36 cm x 46 cm deep (below Ground level) complete with cemented brick work(1:6) of 25 cm width duly plastered with cement morter (inside) CI hinged inspection cover of size 36.56 cm x 35.56 cm with locking arrangement, GI reducer including drilling of 46 nos. 12 mm dia holes on the GI pipe.

Extra treatment of soil by using salt & charcoal for pipe electrode as to G.S.

Supply & fixing earth busbar of galvanized (Hot dip) MS flat 65 mm x 8 mm on wall having clearence of 6 mm from wall incl. providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required (for trtansformer neutral).

Insulating the 65 x 8 mm GI flat incl. S&F black heat shrink PVC sleeves etc. The PVC tube sleeve to be inserted on the GI flat and heat shrinked by heating apparatus by skilled technician carefully without damaging the PVC sleeve as per direction of the EIC (for transformer neutral earth bus bar)

S& laying 240 sq. mm. single core multistrand PVC insulated flexible Cu wire in suitable size of PVC flexible pipe (reinforced) from nutral earth busbar to transformer point as required ( to be laid 2 nos. in parallal) (for transformer neutral earthing)

S & F finishing the ends with copper socket by crimping method of 1 core 240 sq.mm. PVC insulated unarmourd Copper cable as per direction of the EIC.

Supply & fixing of earth busbar of Galv. (Hot dip) M.S. flat of 50 mm x 6 mm on wall having clearence of 6 mm from wall incl. providing drilled holes on the busbar complete with GI bolts, nuts, washers, spacing insulators etc. as required.

Connecting the equipment body to earth busbar incl. S & F 50 mm x 6 mm galvanized (Hotdip) M.S. flat on Wall/floor woth G.I. saddle as required and making connection to equipments with incl. drilling holes, nuts, bolts & washers as per G.S.

Making testing arrangement and submitting the test report for high voltage testing of specified voltage incl. checking & testing of all HT / LT equipments by authorized firm of Directorate of Electricity & commissioning the installation after obtaining the Approval of Directorate of Electricity.

S & F CO2 fire extinguiser (4.5 kg. capcity) (Surex / Fireshield / Max Well) on wall with necessary MS bracket as per G.S. incl. mending good the damages to original finish.

S & F ABC type fire extinguiser (4.5 kg. capcity) (Surex / Fireshield / Max Well) on wall with necessary MS bracket as per G.S. incl. mending good the damages to original finish.

S & F 9 liter capacity fire bucket on wall with necy. M.S. bracket incl. mending good the damages.

S & F best quality FIRST AID BOX (Al. body) as per PWD specification, complete with all the items as required by rule of sub-station on MS bracket incl. damages to original finish.

S & F 'shock treatment chart' on wall with necessary screws.

S & F 11 KV grade rubber hand gloves.

S & fixing 6" x 3" x 1/2" rubber mat suitable for 11KV sub-station (Best quality & ISI approved).

SUB-HEAD 5-- SUPPLY & LAYING OF CABLES

Supply of 4/3.5 Core XLPE Insulated & Sheathed Armoured Aluminium Conductor cables for Working Voltage up to 1100 Volts of following sizes [ Make Nicco / Fort Gloster/ Polycab]

3.5 Core 300 Sq. mm (From SS pannel to AMF Bypass panel) [ NS ]

3.5 Core 120 Sq. mm (From SS pannel to Pump panel) [ NS ]

Laying of cable upto 185 sqmm in underground trench as per GS for the following numbers of Cables.

Laying of cable above 185 sqmm in messonary trench as per GS for the following numbers of Cables.

Connecting the equipments body to earth busbar including S & F 25 mm x 6 mm galvanised (Hot Dip) MS flat on wall/floor with GI saddles as required and connection to equipments incl. drilling holes, with bolts, nuts, washers etc.

Supplying and fixing compression type gland and finishing those for following XLPE / PVC armoured cable (2/4 / 3.5)Core as per GS.

3.5 Core 300 Sq. mm [7(d)/F4 & 8(b)(xxiii) /F5 ]

3.5 Core 120 Sq. mm [7(d)/F4 & 8(b)(xix) /F5 ]

SITC of L. T PANEL

SITC of cubicle type compartmentalised dust & vermin proof panel board of suitable size made of 2 mm thick M.S sheet reinforced with (40X40X6mm) flat/angle iron frame as required with individual hinged door(except for ACB which will be draw out type) with locking arrangement for all compartment & providing suitable ventilation arrangement & powder coating RAL7032 & earthing by nut & bolt in the body complete with base chanel. The lower side of the base of panel should rest on the frame work(75mm X 40mm X 5mm). The panel will have suitable cable alley on rear side of the panel. Panel Builder should have type test report for 50KA short circuit for 1 sec, IP and Temperature rise from CPRI with tinned coper bar with proper colour coded PVC sleaves. The panel comprises of the following breakers/switches. INCOMING a) 433V, Icu@433V=Ics=Icw for 1 sec=65KA, 1600 A, 4P modular 2 cycle (total break time<=40ms) Air Circuit breaker with castle locking arrengement (Make : SCHNEIDER / L & T /Seimens/ABB ), manual draw out type with microprocessor based LSIG release , ready to close contact, thermal memory, with minimum 5 trip history etc,...........2 nos

Bus Bar chamber: 2000 Amp capacity 4 bar electrolytic tinned copper bus bar (as to IS) mounted on non hygroscopic porcelain insulator / hylemp sheet having sufficient di- electric strength duly wrarpped with colour PVC tapes Reds, yellow,blue,and black and for phases and neutral identification and segregated in 2 (two) equal length by keeping space for suitable accomodation of bus cupler in center of BBC

Bus-coupler a) 433V, Icu@433V=Ics=Icw for 1 sec=50KA, 1600 A, 4P modular 2 cycle (total break time<=40ms) Air Circuit breaker , manual draw out type with microprocessor based LSIG release ready to close contact, thermal memory, with minimum 5 trip history with castle locking arrengement as bus coupler including electrcal connection with both the bus bars ,( Make : L & T /Seimens/ABB).....1no

OUTGOING- a) 630 A TPN SFU with H.R.C fuses on L.S & N.L (Make :L & T /Seimens /Legrand/ABB/Schinder)- 12 nos

Charges for dismantling of 3panel HT Gear (OIL type), 250KVA Oil type Transformer (2nos, LT panel (2nos 400A OCB & 12nos OG switch) inluding stack the dismantled material to nearest place by hydra machine.

M/S. PROTIVA ELECTRIC WORKS

PARTHA SARKAR

JAYBEECO

CHAKRABORTY ENTERPRISE