CE CHZ CHM T 22 2026 27 PROVISION OF STAND BY HT CABLE FROM HALLOMAJRA TO N AREA AND AUGUMENTATION TO HT ELECTRIC SUPPLY AT N AREA UNDER GE CHANDIGARH

Supply and fixing of 11KV Extensible Outdoor duty (IP 55 enclosure) SF6 gas insulated 4-way motor operated Ring Main Unit comprising of 2 nos. 630 Amps Vacuum Circuit Breaker as incomer and 2nos. 630 AmpsVacuum Circuit Breaker as outgoing , cable termination from the front, breaking capacity 21KA/3sec (Internal Arc Classification AFLR 21kA-1sec with Bottom Exhaust both for tank and cable box as per IEC 62271-200), enclosed in insulated welded stainless steel tank having IP67 Degree of Protection, leak rate of SF6 gas less than 0.1% and tested as per IEC 60056/60694/60298. Protection CTs shall be ring core type, complete all as specified and directed. The outer enclosure shall have IP 55 protection, it shall be Top Opening Canopy type, Indoor RMU placed inside Outdoor Enclosure shall not be acceptable. Both the Load break switch and Breaker shall have line side earth switch. Both incomer shall be electrically & mechanically interlock. (Incoming From Hallomajra Feeder RMU and RMU No-1)

(A) NOTE:- Other details:- System Particulars: (i) Nominal System Voltage : 11kV. (ii) Voltage variation on supply side : ±10 %. (iii) Corresponding Highest System Voltage: 12kV. (iv) Frequency : 50 Hz with ± 3 % tolerance. (v) Number of Phase : 3 Phases. (vi) Neutral earthing : Solidly earthed. (vii) Fault level (minimum) kA /Sec : 25/1). (viii) Lightning Impulse Withstand Voltage (kVp) : 75 (ix) One minute dry/wet power frequency withstand voltage primary (kV rms) : 28KV (x) Rated Dynamic Withstand Current (kAp) : 52.5KA. (xi) Number of Short Circuit Operations at rated short circuit current of 25 kA for Breaker - 50 Nos. (xii) Earth switch shall have 5 closing operation at short circuit current (making operations E2 class) independent of breaker. Earth switch manual closing shall be driven by a fast acting / snap action mechanism, independent of operator and VCB action. (xiii) All operation, interlock, cable terminations and door shall be front side only.

(B) Applicable Standards for this RMU scope of work - IEC 62271-200. (i) The Ring Main Units shall confirm to the latest applicable, IEC 62271-100, IEC 62271-200. (ii) All live parts, bus bars, shall preferably be enclosed in non- magnetic and non-ferrite grade stainless steel tank Grade SS441 of minimum 2 mm thickness. The RMU shall be type tested for internal arc test of 21KA/1 sec AFLR with Bottom Exhaust for Safety of Personnel for both Tank as well as Cable Compartment as per IEC62271-200. The outer enclosure shall have IP 55 protection for complete switchgears, however it shall be Top Opening Canopy. The protection relay shall be for 3 O/C + 1E/F (IDMT Type) Self powered numerical protection relay with low and high set of over current and earth fault , MODBUS communication along with RS 485 Port / USB Port. (iii) Internal Arc Classification shall be with Bottom exhaust only. RMUs shall be manufactured, inspected, and invoiced from the OEM factory. (iv) Wireless Temperature & climatic sensor shall be provided, Thermal Sensors to be mounted in Cable chamber on each function on cable termination and one number of wireless climatic sensor to be mounted on RMU at suitable location to monitor temperature and humidity data on HMI though PLC. (v) 1 set of surge arrester fix in outgoing way. (vi) VCB, Numerical Relay, HMI, FRTU and Thermal / climatic sensor shall be of same make for better functioning, maintenance, and coordination.

(C) Air Insulated Bus Connected Unit comprising the following:- (1) Air Insulated enclosure with necessary bus connection via bushing. VT’s from the manufacturer and according to IS 3156 shall be accepted. (2) 11KV/rt3/110V/rt3; 50VA class 0.5. Single phase bus PT for metering. (3) 11KV/230V AC, 1KVA control transformer. (4) MFM – EM 6400 NG Class 0.5 for each Incomer. (5) Metering CT Class 0.5, 2.5 VA. (D). Accessories :- (1) Antireflex operating handle. (2) Battery 24V DC , 12Ah. (3) Battery charger (I/P-230V AC, O/P - 24V DC). (4) Manometer with remote contact. (E) FRTU per RMU shall be provided with provision to send data on SCADA

Supply and fixing of 11KV Extensible Outdoor duty (IP 55 enclosure) SF6 gas insulated 3-way motor operated Ring Main Unit comprising of 1 nos. 630 Amps Vacuum Circuit Breaker as incomer and 2nos. 630 Amps Vacuum Circuit Breaker as outgoing , cable termination from the front, breaking capacity 21KA/3sec (Internal Arc Classification AFLR 21kA-1sec with Bottom Exhaust both for tank and cable box as per IEC 62271-200), enclosed in insulated welded stainless steel tank having IP67 Degree of Protection, leak rate of SF6 gas less than 0.1% and tested as per IEC 60056/60694/60298. Protection CTs shall be ring core type, complete all as specified and directed. The outer enclosure shall have IP 55 protection, it shall be top opening canopy type. Both the Load break switch and Breaker shall have line side earth switch. (Hallomajra TOP)

(A) NOTE:- Other details:- System Particulars: (i) Nominal System Voltage : 11kV. (ii) Voltage variation on supply side : ±10 %. (iii) Corresponding Highest System Voltage: 12kV. (iv) Frequency : 50 Hz with ± 3 % tolerance. (v) Number of Phase : 3 Phases. (vi) Neutral earthing : Solidly earthed. (vii) Fault level (minimum) kA /Sec : 25/1). (viii) Lightning Impulse Withstand Voltage (kVp) : 75 (ix) One minute dry/wet power frequency withstand voltage primary (kV rms) : 28KV (x) Rated Dynamic withstand Current (kAp) : 52.5KA. (xi) Number of Short Circuit Operations at rated short circuit current of 25 kA for Breaker - 50 Nos. (xii) Earth switch shall have 5 closing operation at short circuit current (making operations E2 class) independent of breaker. Earth switch manual closing shall be driven by a fast acting / snap action mechanism, independent of operator and VCB action. (xiii) All operation, interlock, cable terminations and door shall be front side only.

(B) Applicable Standards for this RMU scope of work - IEC 62271-200. (i) The Ring Main Units shall confirm to the latest applicable, IEC 62271-100, IEC 62271-200. (ii) All live parts, bus bars, shall preferably be enclosed in non- magnetic and non-ferrite grade stainless steel tank Grade SS441 of minimum 2 mm thickness. The RMU shall be type tested for internal arc test of 21KA/1 sec AFLR with Bottom Exhaust for Safety of Personnel for both Tank as well as Cable Compartment as per IEC62271- 200. The outer enclosure shall have IP 55 protection for complete switchgears, however it shall be Top Opening Canopy . The protection relay shall be for 3 O/C + 1E/F (IDMT Type) Self powered numerical protection relay with low and high set of over current and earth fault , MODBUS communication along with RS 485 Port / USB Port. (iii) Internal Arc Classification shall be with Bottom exhaust only. RMUs shall be manufactured, inspected, and invoiced from the OEM factory. (iv) Wireless Temperature & climatic sensor shall be provided, Thermal Sensors to be mounted in Cable chamber on each function on cable termination and one number of wireless climatic sensor to be mounted on RMU at suitable location to monitor temperature and humidity data on HMI though PLC. (v) 1 set of surge arrester fix in outgoing way. (vi) VCB, Numerical Relay, HMI, FRTU and Thermal / climatic sensor shall be of same make for better functioning, maintenance, and coordination.

(C) Air Insulated Bus Connected Unit comprising the following, (1) Air Insulated enclosure with necessary bus connection via bushing. VT’s from the manufacturer and according to IS 3156 shall be accepted. (2) 11KV/rt3/110V/rt3; 50VA class 0.5. Single phase bus PT for metering. (3) 11KV/230V AC, 1KVA control transformer. (4) MFM – EM 6400 NG Class 0.5 for each Incomer. (5) Metering CT in respective Function’s Cable Compartment , Class 0.5, 2.5 VA. (D). Accessories :- (1) Antireflex operating handle. (2) Battery 24V DC , 12Ah. (3) Battery charger (I/P- 230V AC, O/P - 24V DC). (4) Manometer with remote contact. (E) FRTU per RMU shall be provided with provision to send data on SCADA.

(A) NOTE:- Other details:- System Particulars: (i) Nominal System Voltage : 11kV. (ii) Voltage variation on supply side : ±10 %. (iii) Corresponding Highest System Voltage: 12kV. (iv) Frequency : 50 Hz with ± 3 % tolerance. (v) Number of Phase : 3 Phases. (vi) Neutral earthing : Solidly earthed. (vii) Fault level (minimum) kA /Sec : 25/1). (viii) Lightning Impulse Withstand Voltage (kVp) : 75 (ix) One minute dry/wet power frequency withstand voltage primary (kV rms) : 28KV (x) Rated Dynamic Withstand Current (kAp) : 52.5KA. (xi) Number of Short Circuit Operations at rated short circuit current of 25 kA for Breaker - 50 Nos. (xii) Earth switch shall have 5 closing operation at short circuit current (making operations E2 class) independent of breaker. Earth switch manual closing shall be driven by a fast acting / snap action mechanism, independent of operator and VCB action. (xiii) All operation, interlock, cable terminations and door shall be front side only.