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Multilin SPM 

Synchronous Motor Protection & Control

The SPM controls starting, synchronizing, and protection of collector-ring or brushless type synchronous motors.



  • Collector-ring synchronous motors


Protection & Control

  • Field application

  • PF regulation maximizes efficiency

  • Reluctance torque synchronizing

  • Re-synchronizing

  • DC field current loss

  • DC field voltage check

  • Incomplete sequence

  • Field winding over temperature

  • Power factor (pull-out)

  • Stall/acceleration

  • Restart lockout


SPM Sync Brochure

SPM Sync Manual

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