Reducing switch=on current pulse for inductive loads - increasing effective voltage on lead when connected to AC networks, whilst measuring reactive current and until current threshold or desired voltage is reached

摘要

A method of reducing the switch-on current pulse for an inductive load with a magnetisable core connected to an a.c. network involves increasing th effective voltage on the load whilst simultaneously measuring the reactive current in the load circuit. The voltage is increased until either a current threshold is reached and an opposing voltage applied to the load or the effective value of the voltage is raised to a desired or characteristic level. USE/ADVANTAGE - The method enables an inductive load to be connected to an a.c. network without an undesirable current pulse irrespective of the initial remanence.