WBPWD/SEWEC /BED /NIQ-80/2022-23

Amount

Dismantling the existing Oil Type HT Gear from it's actual position (HT SS of Anamoy SS Hospital) by providing manpower, tools & tackles as necessary and removing the same incl. carriage within a lead of 30 mtr. (Anamoy SS Hospital) & placed as per direction of the EIC. (Shut Down will be provided as per availability of time provided by Anamoy SS Hospital Authority & WBSEDCL) This is including all kind of necessary arrangement as required.

Supply & Delivery (in site at Anamoy SS Hospital, Purba Bardhaman) Indoor-type, floor mounted, metal clad, single tier, fully compartmentalized, free standing, 11 kV VCB Panel with 3 Nos VCBs (1 Incomer + 2 Outgoing), totally enclosed and fully interlocked, horizontal drawout, horizontal / vertical isolation type breaker as per IS 13118, as ammended upto date and as per detail specification below, suitable for use on 11 KV, 3 Phase, 50 Hz AC supply to energise two nos Transformers.

Detail Specification ::

Supply & Delivery of Metal Clad. Indoor-type, single tier fully compartmentalized, free standing, Floor role tyix , 3 panel (1 Incomer +2 Outgoing), 1AC for 26.3 k A for 1 sec, horizental draw out type 11 kV, 630A Vacuuam Circuit breaker having following specifications. The Panel shall be equiped with 1 No Power Pack of adequete rating. [Make : ABB/ Siemens/ Crompton Greaves / L&T / Schneider/Pascal].

CIRCUIT BREAKERS

Type : Air insulated VCB, autorcclosing, system voltage :- 11 kV + 5%, 50 Hz + 5%, 3 phase, rated voltage : 11 kV, rated current : 630A as incomer and 2 nos 630A for out going at 40°C ambient, Short time rating for 1 sec : 26.3 kA, Short Circuit Making Current : 61.3 KA, insulation level (PFrms / impulse peak) : 20 KV/60KV, System Ground : Solidly Earthed, Duty Cycle : O - 0.3 sec - CO - 3 min - CO, Break/ Make time :- Not more than 5 Cycle, Range for Auxiliary voltage for Closing / Tripping / Spring Charging : 85-110%/ 70-110 % / 85 - 110 %. The VCB must withstand 10000 mechanical, & 100 at rated short circuit current. The breakers should have auxiliary contact 8 No + 8 NC, in minimum. The used Breakers will comply with IEC 62271/ IS 13118. Qty. - 3 Nos . (Incomming - 1 no., Outgoing - 2 nos.)

BUSBAR

Rated Current : 630A @40°C ambient, Material: Silver Plated /Tined, High conductivity elecrolytic Copper Bus Bar sleeve : Heat Shrinkable PVC Sleeve with joints having full voltage soft PVC shroude Short time rating for 1-sec : 26.3 kA …….. 1 set

CURRENT TRANSFORMER

Voltage class: As specified in Circuit breaker ; Type : cast resin type, Dual core, Dual Ratio, Barden : 15 VA ; Class insulation : Class' E or better. Protection core 5P10, Metering : 1.0 , Short time rating for 1 sec : 26.3kA Ratio : 300-200/ 5+5 No. (for in coming Breakers), 150/ 5-5 (for outgoing Breakers) -- 3 nos

POTENTIAL TRANSFORMER

Rated Voltage : Primary - 11000/ 3, Sec - 110 / 3; Type : Cast resin , draw out type, 3- phase , 3-limb complete with HV fuses . Barden : 200VA per phase ; Class of insulation : Class 'F' or Better , Accuracy Class: 1.0; Rated Voltage factor: 1.2 continuous, 1.5 for 30 Secs. PT should be drawnout type and serivce continuously shall be indcpandent of Breaker trolly position.

RELAYS FOR PROTECTION & CONTROL

Type : Flush mounted , Drawnout, Numerical and multi funtional (With 3 0/C, E/F & 3 VT I/P) with self monitoring features. Memory : Inbuilt memory capable of registering relay fault and disturbance (at least 25 fault records and 75 events records each with ImSec accuracy) with waveform during fault . RTC : In-built. Display : Alphanumeric LCD display with keyboard for navigation and setting. Other features : 2 setting groups, multishot reclosure, undervoltage, over voltage, CB maintance & Trip circuit supervision, at least 4 programmable LEDs ........ 3 set (Over Current + Earth Fault Relay MICOM 127 Mk. Schneider) High Speed Master Trip relay - 3 Set (VAJH 23 Mk. Alstom) 8 Window Annunciation Facia . with ACCEPT, RESET & TEST Push Button - 1 set for incomming & 2 Set for Outgoing. Auxillary relay for Transmission faults- - 2 Set (for out going) (VAA 33 MK. Alstom). Trip Coil supervision Relay - 2 set (for Outgoing) (VAX 31 mk. Alstom)

METERING

For Incoming - Digital Ammeter, Digital Voltmeter. For Outgoing - Digital Ammeter. Multifunctional Meter Type: Flush' mounted , sealed dustproof construction (Front 1P5X, Rear -IP4X). multifunctional Display : Alphanumeric LCD Display having capability to Giga Display Parameters : Voltage, Current , PF/Frequency and all energy & power parameters with autoscrolling. Accuracy Class : 1.0 Keyboard : Front Panel Keyboard with auto keyboard lock and passward protection for setup parameters. Memory : Inbuilt memory for keeping back-up of lntegrtcd. Data. Other features - Programmable CT/PT ratio. built in phase analyzer (Make : As per manufacturer's strandard)..... 3 set

POWER PACK :

Power pack with 220 Volt AC input & 110 Volt DC continuous output suitable for closing/tripping indication of HT panel Boards with 2 Nos. 12 volt 100 AH maintenance free batteries, Charging unit for trip system complete with suitable capacity digital ammeter & voltmeter i/c connections with 2.5 sqm FRLS insulated copper conductor cable etc as required ---- 1 Set

The panel shall be complete with power pack unit, test terminal blocks, fuses, mcbs, circuit labels, illuminating lamps in each panel, indicating lamps etc., wiring for interconnection with suitable size copper cable, suitable cable end box with cable entry from bottom for incoming and outgoing cables, HV Danger Notice board, Earth bus bars, foundation bolts and nuts etc. as required and as per direction of EIC (Make : All the accessories will be as per manufacturer's strandard)

Installation & commissioning of the above 11 kV VCB Panel with P.T & all the accessories, incl. carriage, by placing in position, assembling, lining up, levelling and checking all instruments, relays, correctly set according to requirement.

Dismantling & withdrawn of one cable above 150 sqmm and upto 300 sqmm (11KV Gr., 3 Core 300 Sqmm) from existing covered masonry trench after cutting from HT Panel end and removing / dismantling the HT Connection / Termination etc. incl. taking out RC covers, after removing the sand.

Re-Laying of one cable above 150 sqmm and upto 300 sqmm (11KV Gr., 3 Core 300 Sqmm) through existing covered masonry trench incl. taking out RC covers, setting them in order, mending good the damages filling the trench with fine dry sand incl. supplying sand.

Supplying & making indoor cable end termination with heat shrinkable jointing kit (Mk, Recam) complete with all accessories including lugs suitable for following size 3 Core XLPE aluminium conductor cable of 11KV grade as required

3 Core 300 Sq.mm

Making testing arrangement and submitting the test report for high voltage testing of specified voltage incl. checking & testing of VCB by authorized firm of Directorate of Electricity & commissioning the installation after obtaining the Approval of Directorate of Electricity. (The Agency shall have to provide Provisional Approval from DOE before commencement of work.)

MS DAS AND CO

MS B N ENTERPRISE