• Most Recent

    Image
    Here's how to reduce the effect of capacitor switching on your power system Last month's article discussed exactly what happens when electric utilities switch shunt capacitors...
    Jan. 1, 2004
    Image
    Just because harmonics is becoming a more prevalent problem, that doesn't mean the subject is getting any easier to understand Harmonics are AC voltages and currents with frequencies...
    Jan. 1, 2004
    Image
    Ladder logic is the basis of most control functions Ladder logic uses switch or relay contacts to implement Boolean expressions. In years past, ladder logic was made possible ...
    Dec. 1, 2003
    Image
    Although shunt capacitors offer several advantages at all voltage levels, those advantages come at a price. Not only must you purchase, install, and maintain capacitor equipment...
    Dec. 1, 2003
    Image
    Meters are indispensable when working with electrical systems Over the years, a wide variety of electrical meters has been developed to assist with monitoring and troubleshooting...
    Nov. 1, 2003
    Image
    Powering industry since replacing the steam engine From tiny hysteresis motors that drive electric clocks to huge synchronous motors that develop more than 50,000 hp, the alternating...
    Sept. 1, 2003
    Image
    By raising and lowering voltage levels, transformers make power systems versatile.
    Aug. 1, 2003
    Image
    Components in parallel share current, but not necessarily equally.
    June 1, 2003