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  • Users: Flashover
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  1. Flashover

    project closeout report

    Hi all, i have been asked to lead a close out report on our last project on the electrical and C&I areas. i was just wondering if anyone might have done some work on these type of reports and have info which might be of help. this being a first for me i am keen to deliver a good and...
  2. Flashover

    question on ANSI MV switchgear code

    Hi all, i have posted under standards, but just on the off chance someone might know here, can someone confirm if the latest MV(6.6kV) ANSI code calls for the control compartment (local control, metering, protection etc) to be removed from switchgear panel and located elsewhere mant thanks...
  3. Flashover

    Question on ANSI electrical code for MV switchgear

    Hi all can someone confirm if the latest MV(6.6kV) ANSI code calls for the control compartment (local control, metering, protection etc) to be removed from switchgear panel and located elsewhere mant thanks Flashover Flashover
  4. Flashover

    Earthing and Lightning Protection

    Hi all I am putting together a document on earthing and lightning protection. akin to guidelines for installations etc in the UK. i have conducted the usual web searches etc. I would be very grateful if anyone has some useful websites or documentation i could include. as always many thanks...
  5. Flashover

    Generator Vibration

    thanks guys am following up on your suggestions immediately Flashover
  6. Flashover

    Generator Vibration

    many thanks JPlinn, still have not removed the rotor for inspection. contractor will replace rotor however they sujjest we comtinue running. this is not satisfactory as we will still not have a definitive answer on the problem. its a brushless system and they claim we cannot run an RSO test...
  7. Flashover

    Generator Vibration

    I feel the same, however we only get this vibration/ probable heating at 0.85pf lagging, we can run at 0.95, 0.9 etc and no problem Flashover
  8. Flashover

    Generator Vibration

    Hi all i posted this in the power engineering section and got some great responses. just posting here in case anyone might have anything else to offer many thanks Flashover Flashover (Electrical) Feb 3, 2005 Hi All, interesting one for the board. we have 150 Mwatt, 181.2 MVA generator (onto...
  9. Flashover

    Generator Vibration

    Thanks all Very much appreciated Flashover
  10. Flashover

    Generator Vibration

    Thanks very much all, the improvement in cooling conditions has not resolved the problem. Big decisions required on what way to proceed regards Flashover
  11. Flashover

    Generator Vibration

    Latest development, is supplier believes that the cooling water for cooling air system should be increased. i.e it is an Air cooled generator (the air is cooled by closed cooling water system). i am afraid this will just cover over the real problem of heating in the rotor. are there any tests in...
  12. Flashover

    Generator Vibration

    Hi all, its an air cooled machine. the gaurantee is 150 MW at 0.85pf. any suggestions for further investigations that may help? thanks Flashover
  13. Flashover

    Generator Vibration

    The vibrations go back to normal operating levels when the power factor is restored to Unity. we can then continue to operate at full load. we are now testing at 0.95, 0.90 etc cheers Flashover
  14. Flashover

    Generator Vibration

    Hi All, interesting one for the board. we have 150 Mwatt, 181.2 MVA generator (onto 110kV system), when operated at unity power pactor or slightly lagging we have no problems. however when run at full load and 0.85pf lagging we get vibration levels rising rapidily after about three hours (i.e...
  15. Flashover

    performance tests and procedures for a fossil fuel boiler

    hi Metengr its a new solid fuel boiler thanks Flashover
  16. Flashover

    performance tests and procedures for a fossil fuel boiler

    Hi All i am looking for information on performance tests and procedures for a fossil fuel boiler, standards etc? any help appreciated. has anybody dealt with a company called Exergetics, from san rafael, california? thanks Flashover
  17. Flashover

    Performance testing of a Fossil fuel Boiler

    Hi All i am looking for information on performance tests and procedures for a fossil fuel boiler? any help appreciated thanks Flashover
  18. Flashover

    Standardisation - Connection of Windfarm 38kV Transformers

    Hi all An issue has arisen in relation to the Electrical Design that we use in the WIndfarms for 38kV connections. It is in relation to the connections of the Grid connected transformer and whether it should be star(38kV)-star (20kV) or star(38kV)-delta (20kV). Both configurations have been...
  19. Flashover

    Pole slip protection/ calculations

    HI Folks anyone know good websites where i can get info on pole slip and then on calculations for settings? many thanks Flashover
  20. Flashover

    Power engineering Commissioning Book

    Hi all, I want to buy a Electrical commissioning book geared towords power plants, any recommendations? many thanks flashover Flashover

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