SPECIAL REPAIR REPLACEMENT OF RING MAIN UNIT AND CONNECTED WORKS AT POWER HOUSE NO 9 AND OFFICER MESS AT AF STATION BAMRAULI

Amount

Excavation in trenches , not exceeding 1.5 m wide and not exceeding 1.5 m in depth for founddation etc and getting out in soft/loose soil complete all as specified and as directed.

Returning, filling in, including spreading levelling watering and well ramming in layers not exceeding 25 cm as in soft/loose soil complete all as specified and as directed.

Removing excavated soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and as directed

M&L for natural river sand as cushioning of cables including spreading and punning down complete all as specified and as directed. Note : Punned thickness shall be measured for payment purpose

Supply & laying reinforced precast concrete cable cover class HVP type 2 with peak size 450mm X 180mmX40mm of approved make complete all as specified and as directed

M&L 100 mm bore galvanised iron pipe, light grade with all fittings, laid in trenches,under roads, drain paths, fixed to poles/walls with mild steel clamps, bolts, nuts and washers complete all as specified and as directed.

Supply , laying ,jointing and testing 185 Sqmm cross sectional area , 3 core XLPE Insulated, screened, PVC badded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor 11000 volts Earthed grade including taking out old unserviceable cable complete all as specified and as directed.

M&L cable jointing kit for 11 KV (earthed) heat shrinkable, indoor termination suitable for cross sectional area 185 Sqmm, 3 core aluminium conductor XLPE cable including jointing material and accessories including cutting of old cable complete all as specified and as directed.

M&L cable jointing kit for 11 KV (earthed) heat shrinkable, Outdoor suitable for cross sectional area 185 sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including cutting of old cable complete all as specified and directed.

M&L cable jointing kit for 11 KV (earthed) heat shrinkable, straight through suitable for cross sectional area 185sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories including cutting of old cable complete all as specified and as directed.

Supply , installations , testing & commissioning in replacement of 11 KV of rating 630 Amp RMU unit outdoor type (IP-54) protection duly painted (Paint shade in painted Alu Zn/RAL 7032 on sheet steel for door and covers), VCB type- I RMU (Ring Main unit) four way comprising of two number insulated load break switch as outgoing and two number Vacuum Circuit Breaker as incoming inside . RMU shall be provided with Copper Bus bar, one number fault passage indicator with each incoming and outgoing mechanism for interlocking arrangements for powered relay complete with supply and fixing accessories as specified herinafter as under:- (a) RMU type installation Outdoor Extensible type, arc proof as per IEC : 62271-200 for design Manufacturing and testing . The RMU must have the following features/specification:- INCOMING :- VCB comprises the following specification / feature :- (i) Rated Voltage upto -12KV (ii) Rated power frequency withstand voltage -28KV (iii) Rated lighting impulse withstand voltage –should be minimum 125KVP (iv) Rate d current for ring main feeder -630A (v) Rated current for VCB feeder -630A (vi) Rated short-time current-21 KA/3 Sec (vii) Rate Short making current -50KA (viii) Ambient temperature (-1 degree Celsius to +45degree Celsius),

(xi) Operating handle -1 No (xii) Right angled Cable boots -3x sets (xiv) Capacitor (xv) Any other standard accessories required for efficient operation of RMU as per OEM recommendations. OUTGOING :- (i) Each load break Switches includes:- (a) three position switches with position ON-OFF -EARTH (b) Manual operated spring mechanism ON-OFF-EARTH (c) Mechanical indicators for position ON-OFF-EARTH (d) Mimic diagram at the front facia of RMU (e) Capacitive Voltage indicator (f) Padlocking facility (g) Fault passage indicator for Earth Fault (ii) Right angled Cable boots -3x sets (iii)The quoted rate shall be demmed to include cost of PCC foundation and PCC plateform of suitable size as per OEM recommendation with100 mm thick PCC 1:2:4 type B-1 using 20 mm graded stone aggregate over 100 mm thick stone hard core of 63 mm complete. Make of RMU:- ABB/SCHNEIDER/SIEMENS as approved

Supply , installations , testing & commissioning in replacement of 11 KV of rating 630 Amp RMU unit outdoor type (IP-54) protection duly painted(Paint shade in painted Alu Zn/RAL 7032 on sheet steel for door and covers), VCB type-I RMU( RING Main unit) Three way comprising of two numbers insulated load break switch as outgoing and one number Vacuum Circuit Breaker as incoming inside . RMU shall be provided with Copper Bus bar , one number fault passage indicator with each incoming and outgoing mechanism for interlocking arrangements for powered relay complete with supply and fixing accessories as specified herinafter as under:- (a) RMU type installation Outdoor Extensible type, arc proof as per IEC : 62271-200 for design Manufacturing and testing . The RMU must have the following features/specification:- INCOMER :- VCB should have following specification :- (i) Rated Voltage upto -12KV (ii) Rated power frequency withstand voltage -28KV (iii) Rated lighting impulse withstand voltage –should be minimum 125KVP (iv) Rate d current for ring main feeder -630A (v) Rated current for VCB feeder -630A (vi) Rated short-time current-21 KA/3 Sec (vii) Rate Short making current -50KA (viii) Ambient temperature (-1 degree Celsius to +45degree Celsius),

(xii) Operating handle -1 No (xii) Right angled Cable boots -3x sets (xiv) Capacitor (xv) Any other standard accessories required for efficient operation of RMU as per OEM recommendations. OUTGOING :- (i) Each load break Switches includes:- (a) three position switches with position ON-OFF -EARTH (b) Manual operated spring mechanism ON-OFF-EARTH (c) Mechanical indicators for position ON-OFF-EARTH (d) Mimic diagram at the front facia of RMU (e) Capacitive Voltage indicator (f) Padlocking facility , (g) Fault passage indicator for Earth Fault (ii) Right angled Cable boots -3x sets (iii)The quoted rate shall be demmed to include cost of PCC foundation and PCC plateform of suitable size as per OEM recommendation 100 mm thick PCC 1:2:4 type B-1using 20 mm graded stone aggregate over 100 mm thick stone hard core of 63 mm complete. Make of RMU:- ABB/SCHNEIDER/SIEMENS as approved

M&L Earthing complete with galvanised steel earth plate electrode 600x600x6mm thick, buried directly and preferably vertically in ground (earth pit not less than 2.25 mtr deep below ground level ) with top edge of the plate not less than 1.5 mtr below normal ground level, connected to galavanised earth strip 32mmx6mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No 3 of SSR Part-I - 2009, connected to earthing point of outdoor panel boards all as specified including excavation and earth work any type of soil, PCC 1:3:6 type C-1 using 20mm graded stone aggregate for chamber and cast iron earthing pit cover having size 250mmx250mm, weight not less than 7.5 Kg as per relevant IS inclduing frame, 50mm dia GI pipe light grade for ptotection, 20mm dia GI medium grade pipe for watering , funnel etc complete all as specified and testing on completion

Madhu Electricals and Engineering Works (BID ID -3084089)

PRASHANT ENTERPRISES (BID ID -3093807)