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  1. jl1495

    New AVRs malfunction on VFD operation.

    Just received from our expert: Quote Yes, - the AVR’s have droop trafo’s installed and they are phased correct (otherwise the reactive loadsharing from remaining part of vessel load would be troublesome too – hope you agree)!! The connection is made as standard “reactive droop compensation”...
  2. jl1495

    New AVRs malfunction on VFD operation.

    Thanks Mike and Bill, all of the above certainly helps; however, a few uncertaintie still remain. I just got this from our expert on the business, who is in on this line of correspondance: Quote The voltage sensing is correctly a 2-ph sense system – no 3-ph averaging measuring trafo is...
  3. jl1495

    New AVRs malfunction on VFD operation.

    The generators are LETAG 10EXR 315M types, rated at 325 KVA, pf 0.8, originally with SVE S-11P AVRs; those being ten years old started to break down, and the type was discontinued and we had to find a replacement. Due to space limitations the Kutai EA08A was selected as being suitable to the...
  4. jl1495

    New AVRs malfunction on VFD operation.

    REf. thread237-286989, we had to replace the old AVRs on two generators on a marine system incl. frequency converters. The old AVRs are no longer supported, but dod operate flawlessly. The new AVRs cannot control the voltage on converter operation. Suppose a low pass filter on th sensing lines...

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