SPECIAL REPAIRS AGAINST CONVERSION OF EXISTING FOUR POLE STRUCTURE TO OUTDOOR VCB PANEL AT FORT AREA UNDER GE KAMPTEE

Amount

Dismantling of old unsv steel pole/struts of any size/capacity complete all as specified and directed.

Dismantling cross-arms of M.S. channel or angle sections etc. complete all as specified and directed.

Dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism for

Dismantling stay assembly complete all as specified and directed.

Supply, Install, testing and commissioning of 11KV, 630A, 21KA/3sec, SF6 Gas Insulated, Outdoor, RHS Extensible Ring Main Unit (RMU) consist of Motorised Four (4) Vacuum Circuit Breaker 1 Incomer & 3 Outgoing with SCADA Communicable Relay, rupturing capacity 250 MVA mounted on suitable pcc structure having following parameters: (a) Metal Enclosed switchgear: IEC 62271-200 (b) General Purpose switches: IEC 60265-1 (c) Disconnectors and Earthing switches: IEC 62271-102 (d) Circuit Breakers: IEC 62271-100 (e) Common clauses: IEC 60694 (f) Pressure of SF6 gas: 1.4 bar at 20 °C (g) Cable bushings: DIN 47636 (h) Temperature class: -25 °C - +40 °C OUTDOOR (j) Degree of protection: (k) SF6 tank: IP 67 (l) Front cover: IP 2X (m) Cable cover: IP 3X (n) Enclosure IP 54 (o) Busbars: 240 mm2 Cu (p) Earth bar (external): 120 mm2 Cu - Bolt dimension: M10 (q) Thickness of Stainless-Steel Tank: 2.5 mm SS-304 (r) Thickness of Enclosure 2 mm CRCA (s) Access to cable Front cable access Colours: (t) Front cover : RAL 7035 (u) Cable cover : RAL 7035 (v) Enclosure IS5 of shade 632 (60 to 80 microns) Make: ABB/Schneider/Siemens

Additional featrues:- Safe plus type V : Vacuum circuit breaker 12kV, 630A. 1 Stored energy mechanism for motorized operation 24V DC with ON-OFF PB 1 Closing & opening coil 24V DC 1 Integrated manually operated disconnector switch (DS) 1 Integrated manually operated earth switch fault making type (ES) Aux NO-NC Contacts VCB- 3NO+2NC, DS- 1NO+1NC, ES- 1NO+1NC 1 Cable door standard with Interlocking 1 Cable bushings interface C (400 bolted), 630 A Cable size up to 3Cx1Rx400 sq.mm. 1 Cable support bar standard for single run termination 3 Terminal protector, Make: Raychem 1 Capacitive voltage indication fixed type VPIS 9-15 kV 1 Series trip coil for self-powered relay 1 Self-powered Numerical relay for OC & EF protection Make: Ashida or C&S 3 Protection CT 50-100/1 A, 2.5VA, 5P10 1 Operating handle 1 Temperature compensated manometer with 1NO Contact 2 12V DC Battery 1 Battery charger

ELECTRICAL DATA:- Nominal voltage : 11 kV Rated frequency : 50 Hz Rated current busbars : 630 A Rated current cable switch disconnector : 630 A Short time withstand current: - Cable switch disconnector with interface C (400-bolt) bushing : 21 kA rms 3 sec. - Vacuum circuit breaker with interface C (400-bolt) bushing : 21 kA rms 3 sec. Rated current for transformer T-off : 630 A Impulse withstand voltage: To earth and between phases : 75 kV Insulation level: - Power frequency 1 min: 28 kV

Material and labour for chemical earthing complete with copper earth plate electrode 900x600x5mm thick burried directly in ground (earth plate not less than 2.25mtr deep below normal ground level ) with top edge of the plate not less then 1.50 mtr. below the normal ground level connected to copper earth lead strip 32 x 6 mm dia by means of bolts nuts, check nuts & washer of brass all as shown in electrical plate No 3 connected to earthing test point all as specified and testing on completion including the material and labour for :- (a) Excavation and earth work or drilling hole for electrode in any type of soil (b) PCC pit in cement concrete 1:2:4, TYPE B-1 (c) Pre-cast RCC cover with suitable handle 40mm thick in PCC 1:2:4 reinforced with welded steel wire fabric (d) Funnel with watering pipe of GI 20mm nominal bore light grade and copper lugs etc all as specified. (e) Earthing strip of size 32 x 6 mm upto 7.50 mtr length shall be included in the quoted rates. (e) 40mm nominal bore meduim grade GI protection pipe of 7.50 metre long for protection of earthing lead shall be included in the quoted rates. (f) Requisite quantity of back fill compund (Earth enhancing compund ) (Min 40 Kg) (g) Connection to earthing test point and testing on completion.

NOTE :- SCHEDULE OF CREDIT (Amount shall be deducted offline from the total quoted amount to workout the net contract sum to be considered for acceptance.) [(-) Rs 5430 /- ]

SHREE MAHALAXMI POWER

Bidder Name

Paragon Electrotechnics

SHREE MAHALAXMI POWER