GroovyGuy
Electrical
- May 9, 2016
- 421
Howdy,
Does anyone have any experience with limiting transformer inrush current. I have several (separate) locations that will experience excessive voltage drop on the incoming Utility feeder. Feeder is 25kV and transformer sizes range from 3MVA up to 12.5MVA. I was thinking of simply using a 25kV reactor, c/w bypass contactor to limit the current to (say) < 2 X IFL. Normal inrush for these transformers in 4.5 to 5.5 x IFL @ 1.0puV.
Voltage-drop w/o these reactors will vary between 25% to over 50%. This level of voltage-drop will not be appreciated by other users on the 25kV feeders.
Thanx.
Does anyone have any experience with limiting transformer inrush current. I have several (separate) locations that will experience excessive voltage drop on the incoming Utility feeder. Feeder is 25kV and transformer sizes range from 3MVA up to 12.5MVA. I was thinking of simply using a 25kV reactor, c/w bypass contactor to limit the current to (say) < 2 X IFL. Normal inrush for these transformers in 4.5 to 5.5 x IFL @ 1.0puV.
Voltage-drop w/o these reactors will vary between 25% to over 50%. This level of voltage-drop will not be appreciated by other users on the 25kV feeders.
Thanx.
