ABOUT MODE HIGH POWER AC CONTACTOR ON A FAILURE; THE SUPPLY VOLTAGE OF 0.4 KV POWER; VOLTAGE FAILURE; NETWORK

V. I. Gurevich

Abstract


In the article the difference between electrical equipment in manufacturing plants and that in electrical
power substations is discussed. Theses differences dictate two different sets of requirements for the supplying
of power to large AC contactors. In accordance with these requirements the article offers two technical
solutions: one of which is based on the contactor remaining in the closed position at voltage sag; and the
second is based on the instantaneous switching-off of the contactor at voltage sag with a subsequent
switching-on with time delay following voltage level restoration.

Keywords


food; voltage sag; net

References


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