If the input voltage fluctuates constantly, the automatic voltage protector (AVP) will react as follows:
★ Stabilize voltage:
★ The automatic voltage protector will try to regulate the voltage to keep it within the safe operating range of the equipment.
★ Cut off power:
If the voltage fluctuation exceeds the set safety threshold, the AVR may automatically cut off the power to protect the connected equipment from damage.
★ Alarm prompt:
Many AVPs are equipped with an alarm function that will issue a warning when abnormal voltage is detected to alert the user.
★ Restore power:
After the voltage returns to normal, the AVP will usually automatically re-power the power to ensure that the equipment can continue to operate.
Long-term voltage fluctuations may cause the performance of the AVP to deteriorate, so regular inspection and maintenance are necessary.
Automatic voltage protector Knowledge Answers：Surge Generation
Surge is also called surge, which means instantaneous overvoltage exceeding the normal working voltage. In essence, surge is a violent pulse that occurs in just a few millionths of a second. Possible causes of surge include: heavy equipment, short circuit, power switching or large engines. Products with surge blocking devices can effectively absorb the sudden huge energy to protect connected devices from damage.
Surge manifestations
Surges are common in power distribution systems, which means surges are everywhere. The main manifestations of surges in power distribution systems are
Voltage fluctuations
◇ Under normal working conditions, machines and equipment will automatically stop or start
◇ Electrical equipment includes air conditioners, compressors, elevators, pumps or motors
◇ Computer control systems often reset without reason
◇ Motors often need to be replaced or rewound
◇ Electrical equipment shortens its service life due to failures, resets or voltage problems
The impact of surges on sensitive electronic and electrical equipment has the following types
Destruction
◇ Voltage breakdown of semiconductor devices
◇ Destruction of the metallized surface of components
◇ Destruction of printed circuit board printed circuits or contact points
◇ Destruction of triacs/thyristors…
Interference
◇ Lockout, thyristor or triac out of control
□ Partial destruction of data files
◇ Errors in data processing programs
◇ Errors and failures in receiving and transmitting data
◇ Failures of unknown causes…
Premature aging
◇ Premature aging of components and greatly shortened life of electrical appliances◇ Output sound quality and picture quality deteriorate
Working principle of automatic voltage protector
Monitor voltage changes and detect grid voltage in real time through built-in voltage sensor. When the voltage exceeds the set range, the protector will automatically cut off the power supply or sound an alarm to prevent equipment damage.
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