Operation mode: By pressing Start push button bridge contactor Q2 is energized and maintains itself via Q2 normal open auxiliary contact. At the same time, voltage is applied to the time ON delay T1 timer. The main contactor Q1 is energized by Q2 normal open auxiliary contact and maintains itself via Q1 normal open contact. When the set time – which corresponds to the start-up time…
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DOL start, for motor with heavy starting duty
