SPECIAL REPAIRS TO EARTHING AND OTHER MISC ITEMS OF E/M INSTALLATION FOR CAMERO UNITS AT SUBROTO PARK

M&L for Conductive Concrete Earth Grid of multiple interconnected Earth Electrodes to achieve the earth resistance value of less than < 5 Ω. The excavation is to be carried out in any type of soil including hard rock. The approx specification are as under:- (i) Earth Electrodes: Metal conductor - Copper bonded MS rod dia 17.2 mm (+/-.5mm), Length 2.25 meter with conductive concrete including provision of bore 80 mm dia, 2.25 meter Length of earth electrode.

(ii) All earth electrodes (min two nos) should be installed to achieved the desired result . (iii) Interconnected Strip: All the multiple Earth Electrodes will be horizontally interconnected with metal conductor - Copper strip flat size : 25mm x 3 mm & conductive concrete embedding size : 60 mm². (iv) Test Link : Test links - Copper strip flat size : 40 mm x 6 mm x 200 mm shall be provided, at any one of the multiple Earth Electrodes of the grid for connection between earth grid pit and application. (v) Pit Cover : RCC pit cover & frame shall be provided at all Earth Electrode (with test links).

Design, supply, install, testing and commissioning of factory made LT Panel Outdoor type, cubical enclosure compartmentalized external and internal mirror type brushed finish suitable for highly corrosive environment, high creep resistance, better mechanical properties like ductility, yield strength, hardness etc.The enclosure shall be made of 2.00 mm thick stainless steel sheet SS 316 sheet. The fixing of double doors shall be on SS hinges with anti-theft provision. All fabrication/welding shall be done with TIG/MIG or as approved by Engineer in charge suitable for SS 316. Sliding handle and locking arrangement front and rear both side. Enclosure shall be suitable for AC supply system 415 volts, 3 phase, 4 wire, 50 Hz. Degree of protection shall be IP-54. The enclosure shall have provision of cable entry. Cable entry from bottom side in seperate cable alley on both side, seperated with bakelite sheet of suitable size, including internal wiring with PVC insulated solid, copper wire, 1100 volts grade. The panel shall consist of TPN aluminium bus bars of size 1.5 time of main incomming rating switch gear and shall be provided with colour coded heat shrinkable sleeves. The panel shall be provided with separate compartments for each switch grar, including instrumentation such as Ampere meter, Volt meter, phase indicating lamps etc with double stud hinged door, front & rear openable with locking arrangement including interlocking with switch gears. The panel shall be fixed with angle iron frame made of angles of size 50 X 50 X 6mm, embedded 200 mm below ground level in PCC 1:2:4, Type B-1 using 20mm grade stone aggregate, 600 mm above ground level and comprising the following:

Incomimg:- (a) MCCB TPN 630 Amp, 4 pole rupturing capacity 36 KA at 415 volt Ics = 100% Icu - 01 Nos with RHOM Makes :- ABB/Seimens/Schenider/Legrand (b) Digital Multifunction Meter to measure KWh, PF, VLL, VLN, W, VA ,V, I including CT and PT complete with all electrical connection - 01 No (c) LED type Phase indicator lamps (R, Y, B) - 1 Set Outgoings:- (a) MCCB TP 125 Amp, 3 pole rupturing capacity 25 KA at 415 volt Ics = 100% Icu - 04 Nos With RHOM Makes :- ABB/Seimens/Schenider/Legrand (b) MCCB TP 80 Amp, 3 pole rupturing capacity 16 KA at 415 volt Ics = 100% Icu - 08 Nos With RHOM Makes :- ABB/Seimens/Schenider/Legrand (c) Control MCB 6 Amps SP-03 Nos

Design, supply, install, testing and commissioning of factory made LT Panel Outdoor type, cubical enclosure compartmentalized external and internal mirror type brushed finish suitable for highly corrosive environment, high creep resistance, better mechanical properties like ductility, yield strength, hardness etc.The enclosure shall be made of 2.00 mm thick stainless steel sheet SS 316 sheet. The fixing of double doors shall be on SS hinges with anti-theft provision. All fabrication/welding shall be done with TIG/MIG or as approved by Engineer in charge suitable for SS 316. Sliding handle and locking arrangement front and rear both side. Enclosure shall be suitable for AC supply system 415 volts, 3 phase, 4 wire, 50 Hz. Degree of protection shall be IP-54. The enclosure shall have provision of cable entry. Cable entry from bottom side in seperate cable alley on both side, seperated with bakelite sheet of suitable size, including internal wiring with PVC insulated solid, copper wire, 1100 volts grade. The panel shall consist of TPN aluminium bus bars of size 1.5 time of main incomming rating switch gear and shall be provided with colour coded heat shrinkable sleeves. The panel shall be provided with separate compartments for each switch grar, including instrumentation such as Ampere meter, Volt meter, phase indicating lamps etc with double stud hinged door, front & rear openable with locking arrangement including interlocking with switch gears. The panel shall be fixed with angle iron frame made of angles of size 50 X 50 X 6mm, embedded 200 mm below ground level in PCC 1:2:4, Type B-1 using 20mm grade stone aggregate, 600 mm above ground level and comprising the following:

Incomimg:- (a) ACB 1250 Amps 4 Pole, 50 kA, 50Hz at 440 Volts with Microprocessor based release Manual drawout type ( MDO ) with overload, Short circuit, instanteneous Protection including neccessary bus bar for connection incoming cable s complete- 1 set Makes :- ABB/Seimens/Schenider/Legrand (b) Digital Multifunction Meter to measure KWh, PF, VLL, VLN, W, VA ,V, I including CT and PT complete with all electrical connection - 01 No (c) LED type Phase indicator lamps (R, Y, B) - 1 Set Outgoings:- (a) MCCB 200 Amp, 3 pole rupturing capacity 25 KA at 415 volt Ics = 100% Icu - 06 Nos With RHOM Makes :- ABB/Seimens/Schenider/Legrand (b) MCCB 125 Amp, 3 pole rupturing capacity 25 KA at 415 volt Ics = 100% Icu - 06 Nos With RHOM Makes :- ABB/Seimens/Schenider/Legrand (c) Control MCB 6 Amps SP-03 Nos

Design, supply, install, testing and commissioning factory made LT Panel Outdoor type, cubical enclosure compartmentalized external and internal mirror type brushed suitable for highly corrosive environment, high creep resistance, better mechanical properties like ductility, yield strength, hardness etc.The enclosure shall be made of 2.00 mm thick stainless steel sheet SS 316 sheet. The fixing of Front doors shall be on SS hinges with anti-theft provision. All fabrication/welding shall be done with TIG/MIG or as approved by Engineer in charge suitable for SS 316. Sliding handle and locking arrangement front and rear both side. Enclosure shall be suitable for AC supply system 415 volts, 3 phase, 4 wire, 50 Hz. Degree of protection shall be IP-54. The enclosure shall have provision of cable entry. Cable entry from bottom side including internal wiring with PVC insulated solid, copper wire, 1100 volts grade.The panel shall consist of TPN aluminium bus bars of capacity 1.5 times of Incommer MCCB/ACB and shall be provided with colour coded heat shrinkable sleeves. (For LT Panel ( Lift & Fire fightening & Comman Area) at Sub Stn 'D')

Incomimg:- (a) MCCB 630 Amp, 4 pole rupturing capacity 36 KA at 415 volt Ics = 100% Icu - 01 Nos with RHOM Makes :- ABB/Seimens/Schenider/Legrand (b) Digital Multifunction Meter to measure KWh, PF, VLL, VLN, W, VA ,V, I including CT and PT complete with all electrical connection - 01 No (c) LED type Phase indicator lamps (R, Y, B) - 1 Set Outgoings:- (a) MCCB TP 125 Amp, 3 pole rupturing capacity 25 KA at 415 volt Ics = 100% Icu - 03 Nos With RHOM Makes :- ABB/Seimens/Schenider/Legrand (b) MCCB TP 80 Amp, 3 pole rupturing capacity 16 KA at 415 volt Ics = 100% Icu - 7 Nos With RHOM Makes :- ABB/Seimens/Schenider/Legrand (c) Control MCB 6 Amps SP-03 Nos

Taking out old/defective cable XLPE/PVC sheathed 1100 volt grade heavy duty armoured with aluminium conductor cable of size 400-300 sqmm 3.5 core from trenches/wall under ceiling etc complete all as specified and directed.

Taking out old/defective cable XLPE/PVC sheathed 1100 volt grade heavy duty armoured with aluminium conductor cable of size 240-185 sqmm 3.5 core from trenches/wall under ceiling etc complete all as specified and directed.