SPECIAL REPAIR/ REPLACEMENT/ ADDN/ ALTN OF VCBS AND ALLIED WORKS AT MRS BHALRA UNDER AGE (I) BHALRA

Supply, installing, Commissioning & testing HT 11 KV, 3 Phase 50 Hz , rupturing capacity 350 MVA indoor type, VCB panel totally metal clad withdrawable type Vacuum Circuit Breaker including suitable as Incomer, including cable connection with Copper busbar of suitable rating. horizontal isolation horizontal drawout type VCB of capacity minimum 800 Amps rated current, IAC-25kA/0.1 Sec. The switch gear panel shall be made up of CRCA sheet steel duly powder coated not less than 2.5mm thick for load bearing section and not less than 2 mm thickness for non-load bearing and shall be totally dust and vermin proof. (i) Continuous current rating minimum-800A. (ii) Short circuit withstand current minimum 25 KA for 3 Sec. (iii) Operating Mechanism of the VCB are suitable for 10000 Mechanical Operations (iv) CT Ratio should be 400-200/5-5, core 1: Class 1 ,15 VA Core 2: 5P10. 15VA burden (v) Cast resin drawout type potential transformer 11 KV/V3/110V/V3/110V/3, 100 VA , CI 0.5 (vi) Protection arrangements for the breaker shall comprise of the following:- (a) Each of the incomer switchgear units shall be provided with over voltage (59), under voltage (27). The over voltage element shall have setting of 100 to 200% in steps of 1% and under voltage element shall have setting of 30 to 90% in steps of 1%. Alongwith over current (50/51) and earth fault (50N/51N) protection, the main protection relays should be SCADA compatible with IEC 61850 Edition 2 on 2 nos. FO ports. Relay should generate GOOSE message as per IEC 61850 standard for interlocking and also ensure interoperability with third party relays. (b) Master Trip Relay (c) TCS Relay (vii) The following meters, indications and acessories are to be provided with the panel. (a) Digital Volt Meter/Ammeter with built in selector switch (b) Necessary DC Supply with powerpack, healthy indication lamp & switch. (c) Multi-function meter. (d) Control:- (d1) TNC (Trip, Neutral & Close) breaker control switch with indicating arrangement. (d2) Local/remote selector switch for breaker open/close operations. VCB Panels should be Manufactured, designed & supplied by OEM only(ABB, CGPISL, SIEMENS, SCHNEIDER). VCB Panels from the System houses are not acceptable. All the main components like VCB/Relays/VI/Panel should be of same manufacturer.Vacuum interrupter shall be of OEM Make only. Note: Altitude of site is 1600M

Supply, installing, Commissioning & testing HT 11 KV, 3 Phase 50 Hz, rupturing capacity 350 MVA indoor type, VCB panel totally metal clad withdrawable type Vacuum Circuit Breaker including suitable as Outgoing, including cable connection with Copper busbar of suitable rating. horizontal isolation horizontal drawout type VCB of capacity minimum 630 Amps rated current,25kA/0.1 Sec. The switch gear panel shall be made up of CRCA sheet steel duly powder coated not less than 2.5mm thick for load bearing section and not less than 2 mm thickness for non-load bearing and shall be totally dust and vermin proof. (i) Continious current rating minimum-630A. (ii) Short circuit withstand current minimum 25 KA for 3 Sec. (iii) Operating Mechanism of the VCB are suitable for 10000 Mechanical Operations (iv) CT Ratio should be 200-100/5-5, core 1: Class 1 ,15 VA Core 2: 5P10. 15VA burden (v) Protection arrangements for the breaker shall comprise of the following:- (a) Each of the outgoing switchgear units shall be provided with over current (50/51) and earth fault (50N/51N) protection, the main protection relays should be SCADA compatible with IEC 61850 Edition 2 on 2 nos. FO ports. Relay should generate GOOSE message as per IEC 61850 standard for interlocking and also ensure interoperability with third party relays. (b) Master Trip Relay (c) TCS Relay (d) Auxillary Relay(6 Elements) (vii) The following meters, indications and acessories are to be provided with the panel. (a) Digital Ammeter with built in selector switch (b) Necessary DC Supply with powerpack, healthy indication lamp & switch. (c) Control:- (c1) TNC (Trip, Neutral & Close) breaker control switch with indicating arrangement. (c2) Local/remote selector switch for breaker open/close operations. VCB Panels should be Manufactured, designed & supplied by OEM only(ABB, CGPISL, SIEMENS, SCHNEIDER). VCB Panels from the System houses are not acceptable. All the main components like VCB/Relays/VI/Panel should be of same manufacturer.Vacuum interrupter shall be of OEM Make only. Note:Altitude of site is 1600M

Supply, installing, Commissioning & testing HT 11 KV, 3 Phase 50 Hz , rupturing capacity 350 MVA indoor type , VCB panel totally metal clad withdrawable type Vacuum Circuit Breaker including suitable as Bus coupler , including cable connection with Copper busbar of suitable rating. horizontal isolation horizontal drawout type VCB of capacity minimum 800 Amps rated current,25kA/0.1 Sec . The switch gear panel shall be made up of CRCA sheet steel duly powder coated not less than 2.5mm thick for load bearing section and not less than 2 mm thickness for non-load bearing and shall be totally dust and vermin proof. (i) Continious current rating minimum-800A. (ii) Short circuit withstand current minimum 25 KA for 3 Sec. (iii) Operating Mechanism of the VCB are suitable for 10000 Mechanical Operations (iv) CT Ratio should be 400-200/5-5, core 1: Class 1 ,15 VA Core 2: 5P10. 15VA burden (v) Protection arrangements for the breaker shall comprise of the following:- (a) Each of the Bus coupler switchgear units shall be provided with over current (50/51) and earth fault (50N/51N) protection, the main protection relay should be SCADA compatible with IEC 61850 Edition 2 on 2 nos. FO ports. Relay should generate GOOSE message as per IEC 61850 standard for interlocking and also ensure interoperability with third party relays. (b) Master Trip Relay (c) TCS Relay (vi) The following meters, indications and acessories are to be provided with the panel. (a) Digital Volt Meter/Ammeter with built in selector switch (b) Necessary DC Supply with powerpack, healthy indication lamp & switch. (c) Multi-function meter. (d) Control:- (d1) TNC (Trip, Neutral & Close) breaker control switch with indicating arrangement. (d2) Local/remote selector switch for breaker open/close operations. VCB Panels should be Manufactured, designed & supplied by OEM only(ABB, CGPISL, SIEMENS, SCHNEIDER). VCB Panels from the System houses are not acceptable. All the main components like VCB/Relays/VI/Panel should be of same manufacturer.Vacuum interrupter shall be of OEM Make only. Note: Altitude of site is 1600M.

Supply and installation of 33 KV single phase out door oil cooled PT of ratio 11 KV/rt3/110 V/ rt3/ 110V/ rt3, Class 0.5-3, Burden 50 VA – 50 VA complete with oil filling etc. complete all as specified and directed.

XLPE insulated cable, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts grade, of size 3 core 120 sqmm complete all as specified and directed.