What Is The Function Of A Self-Recovery Overvoltage And Undervoltage Protector?

The Self-Recovery Overvoltage and Undervoltage Protector (OUPA for short) is an intelligent device used for circuit protection. Its core function is to monitor and intervene against abnormal voltages, ensuring the safety of electrical equipment. Its specific functions are as follows:

I. Core Functions

1. ‌Abnormal Voltage Protection‌
   When the line voltage exceeds (overvoltage) or falls below (undervoltage) the safe range, the protector can quickly cut off the circuit, preventing abnormal voltage from damaging terminal electrical equipment (such as motors, transformers, meters, etc.). For example, undervoltage may cause equipment to fail to start or burn out, while overvoltage can easily lead to hazards such as smoking and fire

2. ‌Automatic Power Restoration‌
   After the voltage returns to normal, the protector automatically reconnects the circuit within a preset time without manual intervention, ensuring continuous operation of equipment when unattended
   

II. Application Scenarios

• ‌Residential and Commercial Power Distribution‌
  Suitable for single-phase 220V/50Hz or three-phase 415V distribution lines, such as incoming lines of residential household distribution boxes and protection of single-phase equipment in shopping malls, especially for voltage abnormalities caused by neutral line faults

• ‌Industrial Equipment Protection