Hi
Does anyone know the type of hand held earth fault tracing unit made by Merlin Gerin? I used one many years ago, you can trace 240V AC earth faults to their source etc.
The unit worked on a torroidal CT you clipped round the cable with the fault
Cheers
I have a 500kva Tx 660/2300v
The delta primary winding is open cirucit due to a fault.
Could you advise what kind of resistance I would expect between L1, L2, L3 if one of the windings in the delta winding was open circuit?
What would the effect be on the remaining two healthy windings and...
I have just joined a new project and need some guidance.
I have 33kv AC 50hz 3 phase sub sea feeder supply cable 25km from shore base sub station feeding a common 33kv switchboard with no bus coupler on an oil rig.
Also connecting to this same switchboad is two 5MW wind turbines via one 33KV...
Gents,
I have a 3 phase 60hz 11kV syncronous induction motor, 15 years old in the North Sea.
Insulation class B
Hazardous rated Exd
I intend to do a PI test PI= R10/R1, have you any information on what DC voltage I should use for this test.
The rule of thumb appears to be 2.5kV and I note...
