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  • Users: rbyrne15
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  1. rbyrne15

    AIEE papers

    Hi, Does anyone know whether AIEE papers can be found online? I'm looking at a bibliography and several references are older AIEE Trans. publications. Is there a major compilation online similar to the IEEE papers/standards? Thanks, Richard Byrne.
  2. rbyrne15

    SKM ANSI fault study multiplier

    Hi everyone, I'm conducting an ANSI (A_Fault) study using SKM Power Tools and have a question about the multiplier used for the crest kA it "spits out." I have figured out from the ANSI/IEEE standards that the multiplier for momentary current (i.e. 1.6) is for the half-cycle current, but where...
  3. rbyrne15

    NE592 video amplifier

    Hi, Has anyone had any experience with the NE592 video amplifier IC? I'm trying to amplify a square wave at 1.5 Mhz, but the output is very distorted. The distortion appears not to be harmonic distortion, but phase distortion. I have built the circuit on a breadboard and have now soldered all...
  4. rbyrne15

    CT terminals

    Hi all, could anyone tell me what the test terminals on a window-type Current Transformer are intended for: what type of "tests" might we use them for? Richard Byrne, E.E.T.
  5. rbyrne15

    ac Generators

    I've been looking at Kohler generators, to get a feel for what they are like. I noticed that they have: permanent magnet (PM)-excited alternators and brushless, rotating-field alternator. Please confirm (or else deny) that I understand these two terms. PM-excited alternator means that a...
  6. rbyrne15

    4.16 kV/600 V transformer question

    I attended a job on Saturday where we maintained a delta/wye-connected transformer. The nameplate showed the normal tap voltage reference chart, with tap 2 shown to provide a line-line secondary voltage of 600 V, from a 4160 V input. Also shown on this chart was "% rated voltage" for each tap...
  7. rbyrne15

    Obsoloete (?) Fischer Porter flow sensor

    Hi Everyone, I was asked at work to find out about a Fischer Porter device, which I was told was a liquid flow measurement device. My initial Google and ABB-website searches have yielded nothing helpful, so I was wondering whether anyone could point me in the direction of some documentation...
  8. rbyrne15

    Obsolete (?) Fischer Porter flow sensor

    Hi Everyone, I was asked at work to find out about a Fischer Porter device, which I was told was a liquid flow measurement device. My initial Google and ABB-website searches have yielded nothing helpful, so I was wondering whether anyone could point me in the direction of some documentation...
  9. rbyrne15

    Open primary winding, 3 phase xfmr, feeding a motor

    I am trying to understand the cause of the increase in line currents from the secondary of a three phase transformer, when the primary winding of the same transformer has faulted and has opened. (Assuming a balanced motor load). My Bussmann "Selecting Protective Devices" book shows only the...
  10. rbyrne15

    Requirement for spacing between bus bars in 600V switchgear

    Could anyone steer me in the direction of the minimum distance required by code (N. America) between copper busbars in 600V switchgear? Also, is the requirement for aluminium bus dufferent from that of copper bus? (Assuming Al is used for such an application). The Standard Handbook for...

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