procurement of RMU PANELS

SF 6 INSULATED RING MAIN UNIT WITH FOLLOWING SPECIFICATONS: Rated voltage : 12 kV Operating voltage : 11 kV Type : Indoor, SF 6 insulated 3 way Power frequency (Hz) : 50 Standards applicable : IEC 62271-100, 62271-102 and 103,62271-200, 60056,60185 and 60186 Rated current of breaker and LBS : 630 Amps Rated lightning withstand voltage : 95 kVp Rated power frequency withstand voltage : 38 kV for 1 minute Rated peak current : 52.5 kAp Rated short time current : 21 kA for 3 sec SF 6 filling pressure : 0.4 bar No: of compartments : 3 ( one VCB+ 2 LBS) Busbar rating : 630 Amps (EC grade copper) Power cable compartments size : Suitable for 1 x 3 x 300 sq mm LBS pad lock positions requirement : Main and in Earth positions Main tank : IP 67 (3 mm thick- robotically welded SS tank) Type test report from National accredited agencies : Required Breaker spring charging operation : Motorized Capacitive voltage indicator : Required Protective relays required : Self-powered O/C and E/F protection CT specification- Ratio: 50/1, VA: 2.5, Class: 5P10 Battery and its charger are suitable for breaker and relay operations. 3 position mimic diagram with indicator required in front panel. Electrical and mechanical actuators required in VCB panel. Positive mechanical inter locks and gas pressure indicators are also required. Panel auxiliary supply 230V AC Note: PDI required for physical and performance evaluation.

IMPERIAL ENGINEERING COMPANY

ESWARI ELECTRICALS PVT LTD