Self resetting overvoltage and undervoltage protector (OUPA) is an intelligent device used for circuit protection. Its core function is to monitor and intervene in abnormal voltages to ensure the safety of electrical equipment. The specific functions are as follows:
1、 Core functions
Voltage abnormality protection
When the line voltage exceeds (overvoltage) or falls below (undervoltage) the safe range, the protector can quickly cut off the circuit to prevent abnormal voltage from damaging terminal appliances (such as motors, transformers, instruments, etc.). For example, under voltage may cause equipment to fail to start or burn out, while over voltage can easily lead to dangers such as smoking and fire
Automatic restoration of power supply
After the voltage returns to normal, the protector will automatically reconnect the circuit within the preset time without manual intervention, ensuring continuous operation of the equipment when there is no one on duty
2、 Application scenarios
Household and Commercial Power Distribution
Suitable for single-phase 220V/50Hz or three-phase 415V distribution lines, such as residential branch box incoming lines, single-phase equipment protection in shopping malls, etc. Especially for voltage abnormalities caused by neutral line faults, customized 60Hz 110V is required
Industrial equipment protection
Protect equipment such as electric motors, vacuum circuit breakers, voltmeters, temperature transmitters, etc., to avoid damage or process control caused by voltage fluctuations
3、 Technical principles
Intelligent monitoring and control
Real time voltage detection using high-speed microprocessors, combined with magnetic holding relays to achieve fast breaking and closing, and modular design to ensure precise action and low power consumption
Anti-interference ability
Can distinguish between transient/transient overvoltage and sustained abnormal voltage to avoid misoperation; At the same time, it can maintain stability in the event of unstable voltage or sudden power outages, preventing accidental connections
4、 Additional protection function
Phase and neutral line protection
Provide protection against phase failure in three-phase circuits or zero wire breakage in single-phase circuits to prevent equipment damage due to phase loss operation
Resistance to high voltage impact
It can still be safely disconnected under continuous high-pressure impact without damage to itself
5、 Difference from ordinary circuit breakers
Ordinary circuit breakers are only designed for overcurrent protection, while OUPA is dedicated to voltage anomaly protection and has automatic recovery function. The two cannot be replaced by each other.
