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  1. NewfieSparky

    Elementary Question on Electrical Power

    I never heard of the R/S/T thing either put my guess would be that these mean that the unit can run at either of these voltages. Is this a 3-phase unit? If you are running at 225V, use the 11.6A. If you are running at 231V, use the 10.3A. Maybe I am wrong, but without more info this is what I'd say.
  2. NewfieSparky

    Federal Pacific Electric Power Transformers

    This company went several different directions over the years. I can't tell you who took over the power xfrm side of things but I do know that the switchgear stuff was taken over by Schneider Electric. Contact them and I'm sure they will be able to help you themselves or direct you to someone...
  3. NewfieSparky

    Power Analysis

    We are going to need to know the voltage to get the current. Basically use this formuala: for 3 phase: KVA Rating/(SQRT(3)*Voltage)=Current For 1 Phase: KVA/Voltage = Current For you KVA = KW when using unity power factor. The single phase load is only going to increase the current draw in...
  4. NewfieSparky

    TapChanger Operating Manual

    Hello, I am in the process of developing an operating procedure manual for the manual operation of a tapchanger. I was just wondering if anyone had any good links or good sources of information that could help me in my process. Specifically, I would like to come up with a step by step procedure...
  5. NewfieSparky

    lightning arresters and cutouts on 25kV lines

    I am familiar with your topic, however I do not have a great deal of experience. From what I seen, you have two choices when installing LA's. First is to put the LA on the primary side of the cutout - If lightening strikes, excess voltage will be dissipated from your line, thus protecting the...
  6. NewfieSparky

    Conditions to put primaries in parallel for MV

    To parallel generators you need three things: same voltage magnitude, same phase angle, same frequency. Also, if you're talking about paralleling after transformers, you may need to address issues surrounding tap changers if they are present. If they are, you must make sure that the two tap...
  7. NewfieSparky

    Equipment Storage

    I was just wondering where all the utilities in Canada are storing their spare/backup equipment. Specifically, I would like to know the environment that they are being stored in (inside, outside, heated garage, tarp ect.). I am asking about large things like voltage regulators, power...

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