PROVISION OF VCB AT DSS 01 AND MRSS AT BAITHKOL NAVAL BASE KARWAR

Amount

Design, Manufacture, Supply, Installation, Testing and Commissioning of HT, 11 KV VCB line up 03 panels and bus coupler 01 , standalone switch boards consiting of 630 A VCB 11 KV - 02 Nos Incomer ,Buscoupler with VCB 630 A VCB 11 KV 01 No and 630 A VCB 11 KV - 01 No outgoing, Indoor type VCB, both side extendable, 630 Amps, 25 kA / 1 Sec. totally enclosed, free standing, floor mounting type, compartment based with truck mounted Vacuum Circuit Breaker, Spring Operated Electrically and Manually Charged Operating Mechanism suitable for horizontal isolation, horizontal draw out type VCBs with copper bus bars, Self supported Insulated Busbar with full voltage rated, complete VCB Panel conforming to IEC 62271-200 standards and IP 4X Class of protection comprising necessary bus-bar extensions and connections, Circuit Breaker suitable for E2, M2, C2 duty, Vacuum Interrupters of the circuit breakers completely encapsulated in epoxy housing, Switchgear and control gear panels of fully arc proof for 25 kA for 1 Sec AFLR with Microprocessor based Numerical Relay Communicable type in line with RS 485 Modbus Protocol, comprising of Three Over Current ,

One Earth Fault Protection Relay with high set for both Phase & Earth and with Fault Memory, Universal Auxiliary Supply, Master Trip Relay, Trip Circuit Supervision Relay, Digital Multifunction Meter with Class 1.0, PT 11KV/110V AC, Power Pack 11KV/230V AC Complete all as specified and as directed and with the following features:- 11 kV, 630 Amps, 25 KA VCB Incomer Panel - 02 Nos Shall be consisting of: [a] 630 Amps Continuous high conductivity electrolytic copper bus bar, Raychem Insulated for full voltage, phase identification made at the end by coloured tape, bus bar shall be mounted on integral seal of bushing and inter connection with electrolytic grade copper with joints silver plated. [b] Circuit Breaker shall be mounted on with drawable truck which shall roll out horizontally from service position to isolated position with ease. [c] Motorised Spring Charged Mechanism 230V, AC. [d] Cast Resin Current Transformer , 11 KV , 200-100/1+1 Amp , 15 VA, CI 5P 10, CL:0.5 - 03 Nos. [e] Cast Resin 3 Phase PT 11KV/110 volts, 100 VA , CI 1.0 - 03 Nos with 3A capacity PT Fuses.

[m] Feeder Protection Relay with Phase overcurrent (50/51), Directional phase overcurrent (67), SOTF Switch On To Fault (50 HS), Current unbalance (46), Thermal overload (49), Earth fault (50N/51N), Directional earth fault (67N), Undervoltage (27), Overvoltage (59), Zero sequence voltage protection (59N), Frequency (81), auto reclose (79), Circuit breaker failure (50BF),Cold load pick-up and magnetising inrush, Programmable stages (99), CB wear. Relay shall have 4CT and 4 VT inputs. Relay shall be provided with at least 16 digital inputs and 8 digital out puts and 1 self-supervision output. Relay shall have also these features inbuilt. MIMIC display with single line representation and switch gear controls shall be possible through the MIMIC. Shall support native IEC 61850 communication Protocol, front USB for connecting to PC, conformal coating to withstand harsh environment, support PRP redundancy communication protocol on FO ports. Web server (web HMI) feature to monitor and control using LAN. Shall have minimum 1000 events. Relay shall support SNTP time synchronization & support customer defined programmable logic with minimum 8 programmable LED. Relay shall have disturbance recorder with settable sample rate from 8 cycle to 32 cycle. Makes: ABB/CG/Schneider/Siemens.

[n] Panel shall also have additional features like Continuous Rated Closing / Tripping Coils, Spring Charging Handle, Manual Closing / Tripping off the VCB with Compartment Door Closed, Short Time Rating 01 Sec as per IEC 62271-200 and VCB shall be suitable for E2, M2, C2 Class. [o] Breaker shall also be provided with Auxiliary Switch 6NO + 6 NC Contacts mounted on the draw out portion of the Switchgear and Position Cell Switch with 03 NO + 1 NC Contact each for Test Position and Service Position.

[g] Multi Function Meter, Digital Type [Displaying A, V, PF, Hz, KVA, KW, KVAR, KWH, KVARH etc. Class 0.5 with RS 485 Port [MODBUS PROTOCOL] Make: L&T, Conserve, Schneider. [h] High Speed Master Trip Relay - 01 Nos equivalent in ABB/Siemens/Schneider./GE [i] Trip Circuit Supervision Relay - 01 Set equivalent in ABB/ Siemens/Schneider./GE [j] PT Fuse Failure Relay - 01 set EQUALENT in ABB/Siemens/Schneider. [k] Anti Pumping Relay [VAA11] equivalent in ABB/Siemens - 01 Set: [l] Air Insulated Rear Bottom Entry Cable Box And Side Cable Box suitable for termination of incoming and Outgoing HT XLPE 11KV cables.

[m] Feeder Protection Relay with Phase overcurrent (50/51), Directional phase overcurrent (67), SOTF Switch On To Fault (50 HS), Current unbalance (46), Thermal overload (49), Earth fault (50N/51N), Directional earth fault (67N), Undervoltage (27), Overvoltage (59), Zero sequence voltage protection (59N), Frequency (81), auto reclose (79), Circuit breaker failure (50BF),Cold load pick-up and magnetising inrush, Programmable stages (99), CB wear. Relay shall have 4CT and 4 VT inputs. Relay shall be provided with at least 16 digital inputs and 8 digital out puts and 1 self-supervision output. Relay shall have also these features inbuilt. MIMIC display with single line representation and switch gear controls shall be possible through the MIMIC. Shall support native IEC 61850 communication Protocol, front USB for connecting to PC, conformal coating to withstand harsh environment, support PRP redundancy communication protocol on FO ports. Web server (web HMI) feature to monitor and control using LAN. Shall have minimum 1000 events. Relay shall support SNTP time synchronization & support customer defined programmable logic with minimum 8 programmable LED. Relay shall have disturbance recorder with settable sample rate from 8 cycle to 32 cycle. Makes: ABB/CG/Schneider/Siemens.

[n] Panel shall also have additional features like Continuous Rated Closing / Tripping Coils, Spring Charging Handle, Manual Closing / Tripping off the VCB with Compartment Door Closed, Short Time Rating 01 Sec as per IEC 62271-200 and VCB shall be suitable for E2, M2, C2 Class. [o] Breaker shall also be provided with Auxiliary Switch 6NO + 6 NC Contacts mounted on the draw out portion of the Switchgear and Position Cell Switch with 03 NO + 1 NC Contact each for Test Position and Service Position. [p] Numerical relay differential protection [87] - 1 No. [q] 12 Window annunciator. (r) Neccessary fabrication work including extension of busbar between both incommig panels for buscoupler as drawing approved by GE is included in the above qouted rate.

Supply and laying or fixing or passing through pipe or in cable ducts, 11000 volts (E) grade XLPE insulated,screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor of 3 core 95 Sqmm size. Note: [i] Earth work, excavation sand cusioning, bricks for protection, GI pipe etc shall be measured separately under relevant items of this schedule work

GI tubing 'Light' grade 100 mm bore with all fittings for cable protection fixed on poles/walls/laid under roads crossing etc and made good the disturbed surfaces/area for following sizes of pipes :-

Cutting the tarmac / hard standings and excavating in trenches across the road for laying cable including making good the excavated portion by means of PCC 1:3:6, type C1 matching with the surroundings all as directed.

Excavation in trench not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth and not exceeding 1.5m for laying of LT under ground cables/GI pipes getting out as in soft /loose soil complete all as specified and directed.

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

Removing excavated material/soil not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point all as specified and directed.

Supply & filling sand cushioning to under ground cable 8 cm before laying the electric cable and 15 cm after laying the cable complete all as specified considering as per SSR 1991 of part -I Note: Only punned thickness of the sand will be meausured.

Supply and lay un-reinforced pre-cast concrete cable cover, class HV, type 1, flat, size 300mm x 180mm x 40mm complete all as specified and as directed.

M&L for Earthing complete with galvanised steel earth plate electrode 60cm x 60cm and 6 mm thick buried directly in ground (earth pit not less than 2.25 metres deep below normal ground level) with top edge of plate not less than 1.5 meters below normal ground level, connecting to the Galvanised iron earth strip 32mmx6mm size, by means of bolts, nuts, check buts and washers of galvanised iron and 32mmx6mm earth lead protected by provision of GI medium grade pipe 40mm bore including provision 40mm thick cover of RCC (1:2:4) reinforced with XPM (weight not less than 4 Kg/Sqm) and frame of angle iron 40mmx40mmx6mm with 6mm dia MS bar handle made to shape, GI light grade 20mm bore pipe for watering of suitable length placed on top edge of earth plate, common salt and charcoal filling, 15 CM alternate layer of charcoal and salt around all sides of earth plate with fixing arrangements, funnel, wire mesh and earth work in any type of soil, returning filling in and removal of surplus soil to a distance not exceeding 50 metre complete all as per plate No 03 of SSR-2009 Part-I and connecting to earth test point all as specified or indicated including testing on completion.

Shree Ayyappa Engineering (BID ID -3111356)

M/S SURAT SINGH AND SONS (BID ID -3111147)

RAVINDRA BROTHERS (BID ID -3109853)

M/S MANOJKUMAR M NAGARKATTE (BID ID -3124072)

Roy and Sons Infrastructures (BID ID -3111799)

ANKIT SHIP REPAIRERS AND SUPPLIERS (BID ID -3111006)

NATIONAL ENGINEERING CORPORATION (BID ID -3111355)