MV system earthing
MV system earthing
(OP)
References like IEEE recommend low resistance earthing of MV systems. In case of motor power supply switchboards, the recommendation is to limit the earth fault currents to ~300A.
From the point of preventing the core burning in motors in case of earth faults, the motor vendors are recommending the current to be limited to 30A.
Are there 3.3/6.6/11kV systems in service with earth fault currents limited to below 50A!
Appreciate sharing of experiences!
From the point of preventing the core burning in motors in case of earth faults, the motor vendors are recommending the current to be limited to 30A.
Are there 3.3/6.6/11kV systems in service with earth fault currents limited to below 50A!
Appreciate sharing of experiences!






RE: MV system earthing
Rafiq Bulsara
http://www.srengineersct.com
RE: MV system earthing
Rafiq Bulsara
http://www.srengineersct.com