Frequency converter is a power control equipment that uses frequency conversion technology and microelectronics technology to control AC motor by changing the working power frequency of the motor. With the continuous improvement of the degree of industrial automation, the frequency converter has also been widely used.

However, the frequency converter often encounters unexpected voltage transients and surges during use, which leads to the damage of the internal electronic devices of the frequency converter. According to statistics, 75% of the faults in the control part of the inverter are caused by transients and surges.

Therefore, SOCAY Electronics launched a high surge protector SC2E8-600ML, which can greatly reduce the surge over voltage, so as to protect the sensitive devices in the inverter.

SC2E8-600ML Main parameters: its DC breakdown voltage is 90V, surge capacity is up to 20KA, and it has ultra-low junction capacitance, less than 1PF. The application circuit is shown below:

This scheme is the use of discharge tube series varistor, which can extend the service life of varistor, and can avoid the continuous current problem of discharge tube, with high level surge testing capability.
Widely used in frequency converter, switching power supply, UPS, medical equipment, air conditioning control board and isolator.