Answer Posted / y ashok

sf6 breaker are used for ht voltage.

sf6 breaker (sf6 gas) are high arc quenching capacity.

sf6 breaker details:-(as per my knowledge)

voltage:132 kv
current:800a
sf6 pressure :4-5.5 kg/cm2
air pressure : 12-15.5 kg/cm2
make:cgl

An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm

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