SDK20

STAR DELTA Start timer with 2 c/o relay output

When input voltage (A1) – (A2) is applied, the contact 15 – 18 is closed and remains in operation for the set star time (T1), on expiry of time (T1), the contact 15 – 18 reopens and both contacts remain open for the dwell time (T2). When time (T2) has elapsed, the contact 25 – 28 is closed and remains in operation

When time (T2) has elapsed, the contact 25 – 28 is closed and remains in operation until the input voltage is removed. If the input voltage is removed from the unit before the star time has elapsed, the time is cancelled and the relay continues at the start of the next cycle on re application of the supply voltage.

Technical data