PROVN OF ELECTRIC INFRASTRUCTURE AND ALLIED WORKS FOR 33/11 KV SUB STATION UNDER GE (A) JAISALMER

Supply, transporting, errection, testing & commissioning of 33/36 kV, 1250A, 750 MVA, 50Hz, voltage class outdoor type PC Vacuum Circuit Breaker with sheet steel clad,vermin and weather proof,for use on system voltage 33/36 KV as per description below :- The Circuit Breaker and accessories shall confirm to IEC 62271-100 or IS 13118 and other relevant IEC/IS standard. The Circuit breaker shall be complete with terminal connection, operating mechanism,control cabinets,cable accessories,with gland,terminal block,lugs,necessary steel support structure for CB and control cabinet. The Circuit Breaker shall be required to perform as per technical parameters given below and shall be suitable to work at an extreme climatic conditions.The circuit-breaker has to control at least 10,000 Make-Break cycles (One operating cycle of making & Breaking) operations at rated current or 100 breaking operations at rated short-circuit breaking current without maintenance. The mechanical life of the vacuum interrupter has to comprise at least 20,000 operating cycles. The operating mechanism must be maintenance-free without time limit up to 10,000 operating cycles.

Item No 1.00 Contd...:- a) Installation - Outdoor, 3-Pole,vacuum Live Tank, sheet steel Clad,Switchyard Breaker. b) Rated Voltage -36kV/33 KV c) Rated Current -1250A or higher upto 2000A . d) power frequency withstand voltage (kV rms) - 95 kV e) 12/50 µsec. Lightning impulse withstand voltage (kV peak) -170kVp.& power frequency withstand voltage - 70KV. f) Rated Short Circuit Current Breaking capacity (for 3 sec.) at rated voltage specified : 25kA . g) Control Voltage of Trip /closing coil - 110VDC/24 V DC h) Motor operated Spring charge voltage - 230VAC i) Symmetrical Interrupting Capacity (kA rms) as per IEC : 25 kA j) Rated Short Circuit Making Current (kAp) - 63 kA k) Out of Phase Breaking Capacity - As per IEC. l) Rated Operating Duty : As per IEC. m) Temperature Rise over the design ambient temperature - As per IEC 62271-100. n) Operating Mechanism - Spring type. o) Min Protected Creepage Distance - 900mm /450 mm p) No.of Trip/close coils - 2 nos. each. q) Spring charging handle - Integral part of Operating mechanism. r) NO/NC auxialiary contacts s)Mechanical trip/close levers t) Mechanical position showing "Spring charge/Spring free" u) Emergency hand trip v) Space heater with control switch w) Local/remote control switch x) Hand operated spring charging device breaker y) Maximum pole scatter - 10 Milli Sec

Supply, fixing, commissioning & testing CONTROL & RELAY PANEL : Panel Simplex type fabricated from 2 mm MS sheet for Side / Top / Rear and with 3mm for Front / Gland plate, Paint Shade-exterior shade- No.631 of IS-5, Interior shade - No.631 of IS-5 Panel size : 750mm (Width) x 610mm (Depth) x 2315mm (Including 100 mm base channel) (Height). Also having Analogue Ammeter, Class 1, KWH Meter Digital, Ammeter Selector Switch, Breaker/Isolator Control Switch, spring return to normal 3–position pistol grip handle, Trip-Neutral-Close for Breaker, Control Supply Selection Switch, L/R Switch, Push buttons for Trip Circuit Healthy, Indication lamps for the following functions: 2 Nos. CB ON/OFF “Red/Green” / 1 No. Auto trip “Amber” / 1 No. Spring Charge “Blue” / 1 No. Trip Circuit Healthy “Yellow".08 Window Static type Annunciator with Accept, Reset, Test Push Button Complete with DC Fail Module & DC Hooter for Trip, Bell for Non Trip AC Hooter for DC Fail. Numerical Transformer Protection and Control Relay, Transformer Protection and Control Relay, Protections 87T, 64R(High Impedance Only), 50, 51, 50N, 51N, 27, 59, 95, Measurement for 3I,I0,3U,U0,Kw,KVA,Kwh,PF,Hz, 8 DI + 10 DO, One front RJ45 Port, One Rear RJ45 Port for IEC-61850 Protocol, Draw Out with CT Shorting feature . Static type Trip Circuit Supervision Relay Type TCS, Space heater with ON/OFF toggle switch. 5 Amp. 3 pin socket with ON/OFF switch. 40 Watt incandescent lamp with holder suitable for 240 V AC with door switch. Terminal Block. MCB for AC & DC Supply, Control fuses with links. Earth bus 25 x 6 mm copper, CT & PT Wiring 2.5sq.mm PVC insulated single core tinned copper type, Control Wiring 1.5sq.mm PVC insulated single core tinned copper type, Test Terminal Block it also includes :-

Supply and installation of 33 KV, single phase, out door oil cooled CT of ratio 100-50/5-5 -5Amp, class 1.0 / 5P10, burden 15 VA complete all as specified and directed by Engineer-in-Charge. Standards : IEC:185 and IS:2705 Core 1:- For instrumentation and metering Core2:- For Combined over current and earth fault protection Core 3:- For differentil protection Rated voltage :- 36 KV Short time current rating : 25 KA rms for 3 Sec. Creepage distance : 900 mm Min Protected creepage distance : 450 mm Min Insulation level impulse : 170 KV Power frequency 1 min voltage withstand level ; 70 KV

Supply and installation of 33 KV single phase out door oil cooled PT of ratio 33 KV/rt3/110 V/rt3/110V/rt3,Class 0.5-3, Burden 50 VA – 50 VA complete all as specified and directed by Engineer-in-Charge. Standards : IEC:185 and IS: 3156 Application :- Instrumentation and metering No of secondary windings :- 01 Primary windings winding one minute frequency voltage(Phase to earth) : 70 KV Primary windings impulse withstand voltage to earth : 170 kV Secondary winding one min power frequency voltage (between sections) : 3 KV Rated voltage factor continuoes - 1.2 Rated voltage factor 30 Sec : 1.5 Creepage distance to earth in mm per KV of highest phase to phase voltage : 25

Supply, commissioning and testing of necessary battery bank consisting of 55 No of cells 02 Volt each drycell maintenance free of capacity 100 Ah for minimum backup for 24 hours alongwith charger input volatge 230V,110 V DC complete all as specified and directed by Engineer-in-Charge.

S&F HT 33 KV out door gang operated air-break switch 9 insulator rocking type horizontal mounting of 200 Amps rating complete including necessary hard ware for fixing complete all as specified and directed by Engineer-in-Charge.