SPECIAL REPAIRS TO ELECTRICAL DISTRIBUTION SYSTEM FROM TSL COLONY AND DSC SINGLE ACCOMMODATION AND SPECIAL REPAIR TO IMPROVE ELECTRICAL REDUNDANCY SYSTEM FROM NORA SUBSTATION TO COMCEN 4 POLE STRUCTURE AT KATTABOMMAN UNDER GE TIRUNELVELI

Amount

SCHEDULE 'A' PART-I [ E/M WORKS]

Supply,installation,testing and commissioning of SF6 insulated outdoor type Ring Main Unit, 11 KV, 630 Amp, 21 KA for 3 sec, Motorized both side extensible, 5 way module consisting of 2 Nos VCB as incomer and 03 Nos VCB as outgoing, Each unit is made of a robotacally welded sealed for life tak of thickness not less than 2.5mmfilled with SF6, containing all high voltage components sealed off from the environment with ingress protection IP 67 ( Enclosure should meet sealed pressure system criterion in accordance with IEC 62271-200) RMU enclosed with internal arc classification compiled to IEC 62271, Nominal Voltage 11 KV, rated frequency 50 Hz, copper busbar of 630 Amps rating, rated copper current cable switch disconnector 630 A, Rated CT 200/630Amp, pressure of SF6 1.4 bar at 20 degree C, impulse withstand voltage E to P 75 KV, with IP protection 54 metal enclosure switch gear IEC 62271-200, general purpose switch IEC 60265-1, VCB module housed in SF 6 cubical consisting VCB 12 KV, 630 A( Vaccum bottles are used as interrupters of the fault current), stored energy mech for motor operation, cable cover stranded with interlocking on incoming side, self powered over current and earth fault protection relay including power pack & battery charger etc complete all as specified and directed.

Supply,installation,testing and commissioning of SF6 insulated outdoor type Ring Main Unit, 11 KV, 630 Amp, 21 KA for 3 sec, Motorized both side extensible, 4 way module consisting of 2 VCB as incomer and 02 Nos Vaccum Circuit Breaker as outgoing, Each unit is made of a robotacally welded sealed for life tak of thickness not less than 2.5mm filled with SF6, containing all high voltage components sealed off from the environment with ingress protection IP 67 ( Enclosure should meet sealed pressure system criterion in accordance with IEC 62271-200) RMU enclosed with internal arc classification compiled to IEC 62271, Nominal Voltage 11 KV, rated frequency 50 Hz, copper busbar of 630 Amps rating, rated copper current cable switch disconnector 630 A, Rated CT 200/630Amp, pressure of SF6 1.4 bar at 20 degree C, impulse withstand voltage E to P 75 KV, with IP protection 54 metal enclosure switch gear IEC 62271-200, general purpose switch IEC 60265-1, VCB module housed in SF 6 cubical consisting VCB 12 KV, 630 A( Vaccum bottles are used as interrupters of the fault current), stored energy mech for motor operation, cable cover stranded with interlocking on incoming side, self powered over current and earth fault protection relay including power pack & battery charger etc complete all as specified and directed.

Supply,installation,testing and commissioning of SF6 insulated outdoor type Ring Main Unit, 11 KV, 630 Amp, 21 KA for 3 sec, Motorized both side extensible, 6 way module consisting of 2 VCB as incomer and 04 Nos Vaccum Circuit Breaker as outgoing, Each unit is made of a robotacally welded sealed for life tak of thickness not less than 2.5mm filled with SF6, containing all high voltage components sealed off from the environment with ingress protection IP 67 ( Enclosure should meet sealed pressure system criterion in accordance with IEC 62271-200) RMU enclosed with internal arc classification compiled to IEC 62271, Nominal Voltage 11 KV, rated frequency 50 Hz, copper busbar of 630 Amps rating, rated copper current cable switch disconnector 630 A, Rated CT 200/630Amp, pressure of SF6 1.4 bar at 20 degree C, impulse withstand voltage E to P 75 KV, with IP protection 54 metal enclosure switch gear IEC 62271-200, general purpose switch IEC 60265-1, VCB module housed in SF 6 cubical consisting VCB 12 KV, 630 A( Vaccum bottles are used as interrupters of the fault current), stored energy mech for motor operation, cable cover stranded with interlocking on incoming side, self powered over current and earth fault protection relay including power pack & battery charger etc complete all as specified and directed.

Supply and fix indoor termination kit 11 KV grade cable, heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of size 120 sqmm to 185 Sqmm complete all as specified and directed by Engr-in-Charge.

M & L Earthing complete with Copper earth plate 60×60cm ×3mm thick electrode and 20x3mm thick copper strip, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to 20x3mm copper strip by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 5 connected to earthing test point all as specified or indicated including testing on completion complete all as specified and directed.

Taking down four pole structure with 11 mtrs, SP 55 Poles including all connected items cross arm, insulators, lightning arrestors complete and making good disturbed surfaces complete all as specifiedand directed.

M&L for providing plain cement concrete in 1:3:6 mix ,type C2 (using 40mm graded stone aggregate) in foundations complete all as specified and as directed.

Supply and laying XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with aluminium conductor, 11000 volts, grade 'E', cross sectional area 150 sq. mm, 3 Core complete all as specified and directed by Engr-in-Charge.

Supply and fix outdoor termination kit, 11 KV grade cable, heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of size 120 sqmm to 185 Sqmm complete all as specified and directed by Engr-in-Charge.

Supplying and laying reinforced precast concrete cable cover class HV, Type 1, flat, size 300mmx l80mm x 40mm complete all as specified and directed by Engr-in-Charge.

Excavation in trenches n.exc 1.5 M wide and n. exc 1.5 M depth and getting out in hard/dense soil complete all as specified and directed by Engr-in-Charge.

Returning, filling in incl spreading leveling, watering and well ramming in layers n.exc.25cm thick complete all as specified and directed by Engr-in-Charge.

Removing excavated material to a distance n.exc 50 M and depositing where directed at a level n.exc 1.5 M above the starting point complete all as specified and directed by Engr-in-Charge.

Supply, spreading and compacting of approved riddled earth in cable ducts / trenches for cable cushion on both top and bottom of cable, including ramming as specified and directed by Engineer-in-Charge. (Note :- 1. Punned thickness only will be measured)

ADVAITH ENGINEERING

shalom constructions

rvelectricals

S KUMARAN

EVEREST ENGINEERING WORKS