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  1. artvandelayb4u

    Undervoltage blocking of frequency relay

    You usually do not need to worry about selecting a specific phase to protect with frequency settings and an undervoltage block. Most often all three phases will see a freq change and the under voltage block is usually set as a phase to ground value. The undervoltage block will be active on...
  2. artvandelayb4u

    Reliability of Relay Test Sets

    Thanks for the info guys. Currently, to my and JG2828's chargrin, we are running a couple of Pulsars. Everyday is an adventure with thoses things.
  3. artvandelayb4u

    Reliability of Relay Test Sets

    I have had the chance to work with a variety of relay test sets that we are looking to purchase. My main concern though, which outweighs my personal opinions on ease of use or functionality, is reliability. Can anyone give me their experiences with problems or lack thereof regarding the modern...
  4. artvandelayb4u

    Testing Short Time Pickup

    I am looking for advice on a methode for Primary Injection testing Short Time pickup on LV Power Circuit Breakers. I am well informed on all other Primary Injections tests on Circuit Breakers, including short time delay, but am having a hard time finding information on short time pickup.
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