Dear all,
I am building a PLC system which control 24vdc relay and the relay finally control 220vac coil 380vac magnetic contactor. For the medium size contactor RC snubber became okay but for the bigger and other coil device it need tuning. So I am looking for zener diode way. But the only available zener diode is 200V and other low voltage 24 and below in my location.
question
1. Can I connect those different voltage zener diodes (200v, 24v and 12v) in series to clamp the voltage say at 270Vac
2. Do I need resistor in series to limit the current?
3. What wattage of the zener diode is recommended for AC3 11kw contactor
I am building a PLC system which control 24vdc relay and the relay finally control 220vac coil 380vac magnetic contactor. For the medium size contactor RC snubber became okay but for the bigger and other coil device it need tuning. So I am looking for zener diode way. But the only available zener diode is 200V and other low voltage 24 and below in my location.
question
1. Can I connect those different voltage zener diodes (200v, 24v and 12v) in series to clamp the voltage say at 270Vac
2. Do I need resistor in series to limit the current?
3. What wattage of the zener diode is recommended for AC3 11kw contactor