Current when tubular heater starts
What is the impact of the current when the electric tubular heater starts
Will the starting current of the tubular heater be large? If you open it every 2-3 seconds and close it every 2-3 seconds. Air switches, contactors and wires can become hot.
The main switch is connected with 32 flat aluminum wires. This main switch drives a three-phase 4KW motor and three three-phase 4KW heating pipes. The heating tube and motor are made of 16 flat aluminum wires. The contactor is 30A. The motor will not start frequently, but the tubular heater will start frequently. Sometimes it is even turned off for 1 second and then turned on for 2 seconds and then turned off for 1 second and then for 2 seconds.
Is it because the wires, switches and contactors are hot due to such frequent startup? Also, will the starting current of the stainless steel tubular heater be as large as when the motor is started? Is there any way to solve this fever problem? There is a voltage display, because next to me here is a transformer, which is a three-phase four-wire. The voltage display is about 400V-420V, and the current is maintained at about 8-10A after the motor runs. Is it because the voltage is too high?