Unbalance currents
Unbalance currents
(OP)
Can I consider Pt100 sensors at induction motor stator windings a good protection against overheating caused by unbalance currents (max unbalance voltage=5%).RTD has a relatively slow reaction time. Can it respond adequately to the heating process? Thanks





RE: Unbalance currents
What size is the motor and how many poles?
Watch for retro fitting them and running the probe conductors parallel the motor windings as mutual induction may blow the controllers.
RE: Unbalance currents
The replaced (4P) motor is new, the Pt100 available. The problem is the voltage, 13,8kV, the low nominal current 45 Amps and the existing CTs ratio (too high to perform a good ANSI 46 protection.
RE: Unbalance currents
RE: Unbalance currents