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  1. Konstantinov

    Coal Fired Boiler Flame Scanners

    We have a stoker fed, moving grate coal fired boiler, which has a backup gas fired auxiliary/emergency backup burner. In order for the gas burner to fire immediately on the start command, a scanner looking at the coal fire has to sense the presence of a coal flame. If no flame is detected, the...
  2. Konstantinov

    220VDC QUESTIONS

    Floating ground simply means that no point on the DC (or AC) system has been intentionally grounded. Just recently, with the installation of our new switchgear, we converted from a 250 VDC ungrounded system to a 125 VDC ungrounded system. Our application is for operating circuit breakers on...

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