Name of Work:- PROVISION OF POWER OPTIMIZATION MEASURES AND ALLIED WORKS AT VSN NAGPUR (PHASE-I) UNDER GE (AF) NAGPUR
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Item Description
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Supply, installation, testing and commissioning 11 KV, 630 Amps, outdoor type Compact switch gear Ring Main unit Main Copper Bus bar SF6 Insulation are inside SF6 Gas tank, Nominal operating gas pressure 1.4 Bar abs, Extensible type, having 02 Nos. Load Break Switches and 01 No Vacuum circuit breaker, (2LBS + 1VCB) all Manual Operated modules with IP class as IP 54, for outer door separately , inside the RMU there shall be an additional cable door with IP3X and Mimic of IP2X and necessary PCC foundation work as per manufacturer's instructions, along with bottom cable entry and front cable termination complete all as specified and as directed with following accessories. & specification RMU switchgear shall be capable of withstanding the specified currents without damage in accordance with the latest versions of IEC 60694 specified including metering module with following specifications complete. Location : MRS Make : CG/ABB/siemens/Schnieder .
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(i) 630A manual VCB module for making & breaking of fault current along with Earth Switch of full breaking capacity -1 NoManual operated 630 A Vacuum circuit breaker having spring stored mechanism.(ii)Three position disconnector/earthing switch downstream vacuum circuit-breaker.Three position single spring mechanism for disconnector/earthing switch“Live Cable” LED Indicators thru Capacitor Voltage Dividers mounted on the bushings.(iii) Short time breaking current - 21KA/ 3 sec(iv) Breaking Capacity - 50 KApeak at rated Voltage(v) Auxiliary contacts - 1NO + 1NC(vi) Power frequency withstand voltage to Earth between Poles & Across opening span - 28KVrms(vii) Impulse withstand voltage Phase to Phase & Phase to Earth - 75kVp(viii) Front cover mechanism - IP2X(ix) Cable covers - 3X(x) Green(ON)/Red(OFF) push buttons to operate VCB.(xi) 3O/C + 1E/F self powered numerical protection relay with Low and High set for Over current and Earth Fault.(xii) Mechanical ON/OFF/EARTH/Spring charge Indication(xiii) Cable boxes should be Arc Proof interlocked with respective Earthing Switches.(xiv) Right angle non-touch proof Termination boots - 1 Set (R,Y,B) The degree of protection required against prevailing environmental conditions, including splashing water and dust, shall be not less than IP 54 as per IS12063Min no. of operations of Circuit breakers at rated current (as per IEC 62271-100) shall be guaranteed with Mechanical Endurance – Class M1 (2000operations).Stored energy mech. for manual operation - 01 NosSet of 03nos. Ring Core Protection CTs of ratio 40-80A/1A as per feeder load, 2.5VA, 10P10 - 01 SetCapacitive voltage indication fixed type VPIS 6-12 kV - 01 Nos• R-Y-B Phase IndicationSet of Coupling bus bars along with suitable coupling kit.- 01 NosManometer- 01 NosOperating handle - 01 Nos Please Enable Macros to View BoQ information
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(i) 630A manual VCB module for making & breaking of fault current along with Earth Switch of full breaking capacity -1 NoManual operated 630 A Vacuum circuit breaker having spring stored mechanism.(ii)Three position disconnector/earthing switch downstream vacuum circuit-breaker.Three position single spring mechanism for disconnector/earthing switch“Live Cable” LED Indicators thru Capacitor Voltage Dividers mounted on the bushings.(iii) Short time breaking current - 21KA/ 3 sec(iv) Breaking Capacity - 50 KApeak at rated Voltage(v) Auxiliary contacts - 1NO + 1NC(vi) Power frequency withstand voltage to Earth between Poles & Across opening span - 28KVrms(vii) Impulse withstand voltage Phase to Phase & Phase to Earth - 75kVp(viii) Front cover mechanism - IP2X(ix) Cable covers - 3X(x) Green(ON)/Red(OFF) push buttons to operate VCB.(xi) 3O/C + 1E/F self powered numerical protection relay with Low and High set for Over current and Earth Fault.(xii) Mechanical ON/OFF/EARTH/Spring charge Indication(xiii) Cable boxes should be Arc Proof interlocked with respective Earthing Switches.(xiv) Right angle non-touch proof Termination boots - 1 Set (R,Y,B) The degree of protection required against prevailing environmental conditions, including splashing water and dust, shall be not less than IP 54 as per IS12063Min no. of operations of Circuit breakers at rated current (as per IEC 62271-100) shall be guaranteed with Mechanical Endurance – Class M1 (2000operations).Stored energy mech. for manual operation - 01 NosSet of 03nos. Ring Core Protection CTs of ratio 40-80A/1A as per feeder load, 2.5VA, 10P10 - 01 SetCapacitive voltage indication fixed type VPIS 6-12 kV - 01 Nos• R-Y-B Phase IndicationSet of Coupling bus bars along with suitable coupling kit.- 01 NosManometer- 01 NosOperating handle - 01 Nos Please Enable Macros to View BoQ information
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