SPM Synchronous Motor Protection & Control
The SPM controls starting, synchronizing, and protection of
collector-ring or brushless type synchronous motors.
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- Collector-ring synchronous motors
- Field application
- PF regulation maximizes efficiency
- Reluctance torque synchronizing
- DC field current loss
- DC field voltage check
- Incomplete sequence
- Field winding overtemperature
- Power factor (pull-out)
- Restart lockout