UPGRADATION OF 11KV MRS AND OTHER CONNECTED WORKS AT MILITARY STATION BHJ

Supplying, Installation, Testing & Commissioning indoor type VCB Panel shall be constructed from CRCA/ Aluminium Zinc coated steel sheet of 2 mm thickness, floor mounted metal enclosed, 11 KV VCB panel suitable to integrate with existing panel at site with 1 no. VCB (Incoming Type), totally enclosed and fully interlocked, horizontal draw out, horizontal isolation type breaker as per IEC-62271-1,100,200, as amended up to date and additional Specifications, having capacities as mentioned below, single break, trip free mechanism, manually and motorised charged and manually and motorised closing breaker suitable for use on 11 KV, 3 phase, 50 Hz A.C. supply with short circuit fault level of 26.3kA for 3 sec , Panel shall be full internal arc tested i.e. in all three chambers at 26.3kA for 1 sec for safety purpose (AFLR). compete with self contained, fully interlocked, rack in and rack out mechanism, air insulated HT sleeved (PVC sleeve is not accepted) self supported Copper bus bars of 800 amps capacity, breaker featured with mechanical ON/ OFF indicator with hand trip coil and auxiliary switch of 4 NO+4NC and equipped with following switchgears and accessories. Make of Vacuum interrupter, circuit breaker, Panel, relays & meters shall be same. Cable compartment suitable for 2RX3C x 240 sq. mm XLPE 11 KV cable (Cable entry from bottom) end termination with heat shrinkable jointing material etc as reqd. There must be a viewing window on VCB chamber door and same must be as per Internal arc test report. The basic insulation level of entire panel shall be 28KV(RMS) / 75KV(Peak). Note 1 : Material & Labour for alternation existing VCB busbar system as per site requirement for conncetion of new VCB including copper busbar, insulator and other connected accessories are included in quoted rate. Note 2 :Only OEM Factory made panels are acceptable. System Integrator panels are not acceptable. Note 3 : For connection with existing VCB Panel all item shall be included in quoted rates. Contractors are requested to site visit before quote the tender. (a) 1 No- 800 Amp VCB (ICOG) and each shall be consisting of (b) 11 KV / 110 Volts PT Class 0.5 accuracy and 50 VA burden with 1 No. Voltmeter(0-15 KV), digital type selector switch for voltmeter and protection fuses / MCB for HT metering upto 12 KV on incomer. (0-50-100A) comply with IS 3156. PT must not be on the top of the panel. It must be floor rooled placed rear side of panel or on the CB trolley -1 Set. (c) Digital type multi function meter and Digital type Ammeter & Voltmeter - 1 No. d) Flush mounted type Microprocessor based numercial IDMT relay (VCB Panel manufacturer's own Make) with O/L, E/L and S/C communicable on modbus protocal for protection and Status monitoring with Master trip and Trip Ckt Supervision relay. Relay shall have programable 4 digital Inputs and 6 outputs. -1 No. (e) Dual core /single core;separate sets, dual ratio 3 Nos. CTs 200/100/1 A of 5 VA burden and accuracy class 0.5 for metering and class 5P10 for protection comply with IS 2705 - 1 Set (f) R,Y,B ON, OFF, Trip Indication with Control MCB - 1 Set (g) Annunciator -8 Window- 1Set (i) Power panel pack with 220 Volt AC input & 110V Volt DC continuous output suitable for closing / tripping / indication etc Approved Make: ABB/Siemens/Schneider Infrastructure

Supplying, Installation, Testing & Commissioning indoor type VCB Panel shall be constructed from CRCA/ Aluminium Zinc coated steel sheet of 2 mm thickness, floor mounted metal enclosed, 11 KV VCB panel suitable to integrate with existing panel at site with 1 no. VCB (Incoming Type), totally enclosed and fully interlocked, horizontal draw out, horizontal isolation type breaker as per IEC-62271-1,100,200, as amended up to date and additional Specifications, having capacities as mentioned below, single break, trip free mechanism, manually and motorised charged and manually and motorised closing breaker suitable for use on 11 KV, 3 phase, 50 Hz A.C. supply with short circuit fault level of 26.3kA for 3 sec , Panel shall be full internal arc tested i.e. in all three chambers at 26.3kA for 1 sec for safety purpose (AFLR). compete with self contained, fully interlocked, rack in and rack out mechanism, air insulated HT sleeved (PVC sleeve is not accepted) self supported Copper bus bars of 630 amps capacity, breaker featured with mechanical ON/ OFF indicator with hand trip coil and auxiliary switch of 4 NO+4NC and equipped with following switchgears and accessories. Make of Vacuum interrupter, circuit breaker, Panel, relays & meters shall be same. Cable compartment suitable for 2RX3C x 240 sq. mm XLPE 11 KV cable (Cable entry from bottom) end termination with heat shrinkable jointing material etc as reqd. There must be a viewing window on VCB chamber door and same must be as per Internal arc test report. The basic insulation level of entire panel shall be 28KV(RMS) / 75KV(Peak). Note 1 : Material & Labour for alternation existing VCB busbar system as per site requirement for conncetion of new VCB including copper busbar, insulator and other connected accessories are included in quoted rate. Note 2 :Only OEM Factory made panels are acceptable. System Integrator panels are not acceptable. Note 3 : For connection with existing VCB Panel all item shall be included in quoted rates. Contractors are requested to site visit before quote the tender. (a) 1 No- 630 Amp VCB (ICOG) and each shall be consisting of (b) 11 KV / 110 Volts PT Class 0.5 accuracy and 50 VA burden with 1 No. Voltmeter(0-15 KV), digital type selector switch for voltmeter and protection fuses / MCB for HT metering upto 12 KV on incomer. (0-50-100A) comply with IS 3156. PT must not be on the top of the panel. It must be floor rooled placed rear side of panel or on the CB trolley -1 Set. (c) Digital type multi function meter and Digital type Ammeter & Voltmeter - 1 No. (d) Flush mounted type Microprocessor based numercial IDMT relay (VCB Panel manufacturer's own Make) with O/L, E/L and S/C communicable on modbus protocal for protection and Status monitoring with Master trip and Trip Ckt Supervision relay. Relay shall have programable 4 digital Inputs and 6 outputs. -1 No .(e) Dual core /single core;separate sets, dual ratio 3 Nos. CTs 200/100/1 A of 5 VA burden and accuracy class 0.5 for metering and class 5P10 for protection comply with IS 2705 - 1 Set (f) R,Y,B ON, OFF, Trip Indication with Control MCB - 1 Set (g) Annunciator -8 Window- 1Set (i) Power panel pack with 220 Volt AC input & 110V Volt DC continuous output suitable for closing / tripping / indication etc Approved Make: ABB/Siemens/Schneider Infrastructure

Supplying, Installation, Testing & Commissioning of an indoor metal-enclosed VCB Adapter (Transition) Panel engineered to mechanically and electrically integrate an existing switchgear suite with a new Vacuum Circuit Breaker panel board. Fabricated from minimum 2.0 mm CRCA/GI steel with IP4X/IP55 protection and an electrostatic powder-coated finish, the unit features insulated high-conductivity copper/aluminum transition busbars designed to specified system voltage and short-time withstand ratings (e.g., 11 kV/33 kV, up to 40 kA/3s) alongside a continuous earth busbar. Built in compliance with IEC 62271-200 standards, the panel includes flexible copper jumpers to absorb alignment tolerances, segregated compartments for fault isolation, dedicated auxiliary terminal blocks for control wiring interlocks, and mandatory Factory Acceptance Testing (Hi-Pot, IR, and contact resistance tests) prior to dispatch.

Material & Labour for the safe electrical isolation, disconnection of incoming and outgoing HT cables, and structural dismantling of 3 Nos. existing VCB panels at MRS, including load transfer to another designated VCB / main VCB feed to ensure uninterrupted station power; complete with physical decoupling of old busbars/couplers, design and installation of new modified copper busbars and jumper links to maintain continuity across the remaining switchboard, safe removal for shifting of decommissioned VCBs to designated site storage, insulation resistance and HV testing, and all associated hardware, tools, tackles, and safety compliance as per engineering standards and direction of the Engineer-in-Charge.

Material & Labour for transfer of 03 Nos unserviceable VCB's to MES Store Yard complete all as specified and directed by Engg-in-charge.

Supply, laying & testing HT Cable XLPE insulated, screened PVC bedded, galvanized steel strip or wire armoured electric power cables (heavy duty) with aluminum Conductor, 11000 volts grade cross sectional area of size 95 sqmm 3 Core Complete.

Excavating in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth for foundation etc for laying of cables, erection of poles, struts/ stays etc not exceeding 10 sqm on plan and getting out in any type of soil. Note: Rate for removal and disposal of bushes and roots etc where applicable during the work shall be included in the quoted rate.

Excavation in trenches exceeding 1.5m wide and not exceeding 3.0m depth in hard/dense soil for laying of cable/ GI pipe and getting out complete all as specified and directed.

Returning, filling in, including spreading leveling watering and well ramming in layers not exceeding 25 cm in any type of soil.

Removing excavated materials to a distance not exceeding 50 m and depositing where directed, at a level not exceeding 1.5 m above the starting point in soils.