Reverse power relay

Discussion in 'General Electronics Chat' started by Jsw123, Jun 26, 2009.

  1. Jsw123

    Thread Starter Active Member

    Jun 20, 2009
    I am trying to protect two 3 phase synchroneus, brushless generators running in parallel from reverse power if one engine, generator, or field winding/regulator fails.(These are not in parallel with grid but with eachother.) I found two reverse KVAR relays for cheap but havn't been able to find used reverse power relays.I am trying to find a way to use the reverse KVAR relays.

    The generators are 87 amp, Power Factor 0.8, 120/208Y,25KW

    - if I use the reverse KVAR relays would could I calculate maximum reverse reactive power to be 20% of rated amperage and size current transformer accordingly?

    - Would this work regardless of whether the fault occurs when there is resistive, reactive, or no current on the loads?

    The Relays I am looking at is a wilmar 720TD-7-X. What I was originally hoping to use was a 720TD series. (The X stands for reverse reactive power.)
    Last edited: Jun 26, 2009