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  • Users: Breaker
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  1. Breaker

    4 Limb Wye-Wye Transformer

    We were in need for a zero phase shift transformer with the characteristics of a delta-wye transformer, and after some research we decided that a 3 winding wye-wye with buried delta could provide this (Yyn0d1). A well known manufacturer, has now provided us with a 4 limb wye-wye...
  2. Breaker

    Open CTs

    Why does leaving a CT secondary open while passing primary load current, cause high voltages in the CT secondary windings and wiring?
  3. Breaker

    PFC for residential users

    I have come across a device which claims to save on your electricity bill. It is a UK device. I believe it is a con and want to take action against them, but before i do this i want to be sure that i haven't got it all wrong. The device is a small unit which plugs into any socket in the...
  4. Breaker

    K - Factor

    Could anyone give me any good websites which discusses the K factor (US) or factor K (europe)
  5. Breaker

    Induction Heating Equation

    I found this simple but useful equation on a website for induction heating, P = k.I^2.(u.p.f)^-0.5 where P is the heating power to the workpiece k is a constant I is the current in the pick-up coil u is the relative permeability p is the resistivity (ohms mm^2/m) f is the frequency From this...
  6. Breaker

    Heat transfer between steel and flowing water

    Hi Could anyone give me some simple guidelines for some simple calculations on how i could calculate the amount of water and flow rate required to transfer heat from a steel object. Assuming 100% efficiency in heat transfer. The steel object is assumed to be maintained at a fixed temperature...

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