SPECIAL REPAIR, REPLACEMENT OF OLD EXISTING GANG OPERATED DEVICE MOUNTED ON FOUR POLE STRUCTURE TO RING MAIN UNIT AND ALLIED WORKS AT CQA (V) UNDER GE (S) AHILYANAGAR

Dismantling of U/S 11 KV Air break gang operated triple pole switches vertical/horizontal including insulators and operating mechanisum complete all as specified and directed .

Dismantling and taking down cross-arms of M.S. channel or angle sections with nuts, bolts, washers etc complete all as specified and directed .

Dismantling steel poles/ PCC Pole of any size (HT/LT) complete all as specified and directed by Engineer in Charge.

Dismantling old existing ACSR conductor of any type/size all as specified and directed.

Supply, install, testing, commissioning complete 11 KV Ring Main Unit for 5 Nos (02 for incoming and 03 Nos outgoing) breaker of capacity 630 Amps each, outdoor type, copper bus bar of suitable capacity and breaking capacity 25 kA with enclosure for mounting. 02 No Load break switch for incoming and 03 Nos outgoing SF6 Circuit Breakers with interlocking arragement as specified in IE Rules & for clearance, safety and operation inside the enclosure, CPRI approved including cable termination chamber. SF circuit Breaker shall be front access. rating for single SF6 circuit breaker are as follows:- (Note: Rates shall be inclusive with 02 No Load break switch for incoming and 03 Nos outgoing SF6 Circuit Breakers) Circuit breaker, Rated Current: 630A, closing and Tripping coil: 24V DC, Spring Charging motor : 230V AC, STC:21KA for 03 sec BIL: 12/28/75 KVP CT Ratio- 200-100/1A, cl 1 Core 1 : Burden-10VA, class: 1.0 Core 2 : Burden-10VA, class: 5P10 STC :25KA for 1Sec BIL: 12/28/75KVP Potential Transformer with 3.15A HT Fuse ( Fixed type) PT Ratio : 11KV/RT3/110/RT3/110/3 Core 1 : Burden-50VA, class: 1.0 Core 2 : Burden-50VA, class: 3P BIL: 12/28/75 KVP V.F 1.2 are continuous & 1.9 for 8 hours

Protection Relay (i) 3 over current +1 E/F Relay (RS-485 communicable) (ii) Protection 50,51, 50N.51N, 86 (iii) CT Secondary- 5A (iv) Mounting : Flush mounting (v) Aux supply : 24V DC in built Master Trip Relay ( Hand Reset Electromechanical type) Protection- 86 Mounting- Flush Mounting Aux supply : 24V DC Metering Equipment (Incoming & Outgoing) Digital Multifunction Meter (RS-485-Communicable), Class-1.0, Cut out size 92x92, Aux Supply : 230V AC Digital Voltmeter, Class 1.0, Cut out size 92x92, Aux Supply : 230V AC & 12V DC Accessories TNT Switch, Contacts: 02 NO & 2NC Local Remote Switch, Contacts: 02 NO & 2NC Space heater 100W Thermostat Temperature Range: 30-90, 15A 3 Pin socket for 230 V AC Supply Current 1-A Toggle switch, Push button for Trip circuit Supervision check, Contacts: 02 NO

TB for CT & PT circuit, Disconnecting type Type KUTSD6 TB for control circuit, Non-Disconnecting type Fuse control circuit, 8 window Annuniciator Aux Voltage : 230V AC Hooter, Aux Voltage : 230V AC Battery Charger 5A 230V AC I/P & 24 V DC O/P Battery 12 V DC, 7AH Indication Lamp Red colour lamp, 24 V DC : For Breaker ON Green colour lamp, 24V DC : For Breaker Off Blue colour lamp, 24 V DC : For Breaker Spring Charge Amber colour lamp, 24 V DC : For Auto Trip White colour lamp, 24 V DC : For Trip Circiut Supervision Red colour lamp, 63.5 V AC : For R Phase Healthy Yellow colour lamp, 63.5 V AC : For Y Phase Healthy Blue colour lamp, 63.5 V AC : For B Phase Healthy Breaker Rack in and out handle Testing Factory Tests shall be carried out in presence of Rep of Accepting Officer as per IEC standard-62271-100

Following test reports for 03 Nos SF6 breaker shall be submitted before applying payments:- (i) Insulation resistance test (ii) Operation time test (iii) Contact resistance test (iv) Pre-insertion resistance (PIR) test (If applicable) (v) SF6 gas leak test (vi) High Voltage withstand test (vii) Secondary test to ensure the proper functioning of the live line indicators, fault passage indicators and relay (viii) Mechanical Operation Test Notes :- (i) PCC foundation for RMU as per OEM drawing and specifications shall deemed be included in quoted rate. (ii) Factory inspection of RMU shall be carried out by Engineer in Charge, Contractor has to inform the same in advance to the Dept. (iii) Pre-commissioning Inspection shall be carried out by EI/SEI of HQ CESC, Contractor has to arrange T&P for testing the same.

Supply, install, testing, commissioning complete 11 KV Ring Main Unit for 4 Nos (01 for incoming and 03 Nos outgoing) breaker of capacity 630 Amps each, outdoor type, copper bus bar of 50x10mm with rupturing capacity of 350 MVA and breaking capacity 25 kA with enclosure for mounting. 01 No Load break switch for incoming and 03 Nos outgoing SF6 Circuit Breakers with interlocking arragement as specified in IE Rules & for clearance, safety and operation inside the enclosure, CPRI approved including cable termination chamber. SF circuit Breaker shall be front access. rating for single SF6 circuit breaker are as follows:- (Note: Rates shall be inclusive with 01 No Load break switch for incoming and 03 Nos outgoing SF6 Circuit Breakers) Circuit breaker, Rated Current: 630A, closing and Tripping coil: 240V DC, Spring Charging motor : 230V AC, STC:26.3KA for 03 sec BIL: 12/28/75 KVP CT Ratio- 200-100/5-5A Core 1 : Burden-10VA, class: 1.0 Core 2 : Burden-10VA, class: 5P10 STC :25KA for 1 Sec BIL: 12/28/75 KVP Potential Transformer with 3.15A HT Fuse ( Fixed type) PT Ratio : 11KV/RT3/110/RT3/110/3 Core 1 : Burden-50VA, class: 1.0 Core 2 : Burden-50VA, class: 3P BIL: 12/28/75 KVP V.F 1.2 are continuous & 1.9 for 8 hours

Protection Relay (i) 3 over current +1E/F Relay (RS-485 communicable) (ii) Protection 50,51, 50N.51N, 86 (iii) CT Secondary-5A (iv) Mounting : Flush mounting (v) Aux supply : 24V DC in built Master Trip Relay ( Hand Reset Electromechanical type) Protection-86 Mounting-Flush Mounting Aux supply : 24V DC Metering Equipment (Incoming & Outgoing) Digital Multifunction Meter (RS-485-Communicable), Class-1.0, Cut out size 92x92, Aux Supply : 230V AC Digital Voltmeter, Class 1.0,Cut out size 92x92, Aux Supply : 230V AC & 12V DC Accessories TNT Switch, Contacts: 02 NO & 2NC Local Remote Switch, Contacts: 02 NO & 2NC Space heater 100W Thermostat Temperature Range: 30-90, 15A 3 Pin socket for 230 V AC Supply Current 1-A Toggle switch, Push button for Trip circuit Supervision check, Contacts:02 NO