what is the maximum tolerable time for changeover?
I don't look time as time. It has to be safety when changeover is made. Fan 1 has to stop and then fan 2 start. If is that 10 min it will be 10min if 30min it will be 30min.
I look for VFD from Danfoss FC302.
Hi,
I need some suggestion about how to start 200kW ventilator (400/690V 2 pol or 4 pol)?
I have two ventilators. Ventilator 1 is 200kW and for continuously, when ventilator 1 goes down(defect), ventilator 2 has to start automatically. What is best solution for start so big fans and how to...