Shaft Voltage measurements
Shaft Voltage measurements
(OP)
I am looking for a simple means of measuring shaft voltages for EDM investigation.
Any recommendations?
Best regards,
Mark.
Any recommendations?
Best regards,
Mark.
Mark Empson
Advanced Motor Control Ltd





RE: Shaft Voltage measurements
Another version uses a large custom-made split CT around the shaft at the bearing to measure shaft current via a special relay. Current here indicates a bearing insulation fault. This I believe was a patented system by ASEA which was standard on their hydro generators.
It is also often that the brush at the NDE end is used for directly grounding the shaft, if no supervision of the shaft voltage is applied.
rasevskii
RE: Shaft Voltage measurements
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