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Earth Fault Loop Impedance with Safety Generator
Former Community Member
Do I take this into consideration? If so how do I size wire in a building with a safety generator? What is my "Ze" when the supply switches from DNO to the safety generator? How do diesel generators behave during faults?
Generator can sustain 2.5 to 3 times rated current with a 3-phase fault applied for approximately 10 seconds without damage to alternator.
The alternator windings may well be able to, but I'm struggling to accept that the associated prime mover can produce 2.5 to 3 times it's rated output for a second, yet alone 10 seconds. What size is the flywheel?!!!!!
Generator can sustain 2.5 to 3 times rated current with a 3-phase fault applied for approximately 10 seconds without damage to alternator.
The alternator windings may well be able to, but I'm struggling to accept that the associated prime mover can produce 2.5 to 3 times it's rated output for a second, yet alone 10 seconds. What size is the flywheel?!!!!!
