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  1. gpattu

    Should bimetallic overload relays be tested yearly by current injection ?

    Hello! Rejoining after long time. Pl. let me know any standard available for frequency of current injection testing of bimetallic overload relays ? Thanks.
  2. gpattu

    What is Field Flashing

    Dear PAULUK, As you know every alternator requires residual magnetism so as to build up voltage on its own. You can check this by measuring voltage at Alternator terminals while running it with field connections open. Some times due to long period of idling or due to wrong connections, this...
  3. gpattu

    3rd HArmonics problem

    Dear mmiro227, I face exactly same problem. Please refer my thread No. 138-16017. Whether 3rd harmonics are because of pitch ? In your initial post you have mentioned about very high circulating current. whereas in your subsequent post you claim to reduce it to about 20% at full load. how do...

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