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  • REL 670 Overview
  • PCM 600 Protection and Control IED Manager
  • Testing Considerations


2 Replies to “ABB REL 670 Line Protection Testing”

  1. avatar

    I have tested the REL670 with low differential current just above the tripping point and the relay operates at 300mS instead of the much shorter 20mS for solid faults. I cannot find any mention of the trip time in the manual. Any help will be appreciated. TQ.

    1. avatar

      u can join our WhatsApp or Telegram group to ask your q. +989129613659