AVP manufacturers tell you that an automatic voltage protector can protect against voltage spikes.
Automatic voltage protector manufacturers tell you what a surge is.
Surge, also known as surge, is a momentary overvoltage that exceeds the normal operating voltage. It is essentially a violent pulse that occurs in just a few millionths of a second. Surges can be caused by heavy equipment, short circuits, power switching, or the operation of large engines. Surge voltage (or surge current) is a very high operating overvoltage (or overcurrent) generated by a circuit when it is struck by lightning or when an inductive load or a large load is connected or disconnected. It is a transient interference. For example, a surge voltage of 300V to 600V may appear when a DC relay coil is disconnected; a surge current of 8 to 10 times the rated current may appear when an incandescent lamp is turned on. The occurrence of surges may cause damage to the power system and connected electronic equipment. Therefore, understanding and preventing surge phenomena is crucial to protecting equipment and maintaining the stable operation of the power system.
Automatic voltage protector suppliers tell you what voltage spikes are.
Voltage spikes are a voltage phenomenon with a very short duration but a very high value, which is a type of surge voltage. It is usually caused by the operation of heavy equipment, short circuits, power switching, or large engines, or when lightning strikes a transmission line. Voltage spikes are characterized by voltages lasting tens of microseconds and up to hundreds of volts and are mainly generated by motors, capacitors, and power conversion equipment (such as variable speed drives). These devices may generate extremely high voltage peaks during operation, posing a threat to the power system. In addition, voltage spikes also occur regularly in low-voltage power circuits, and the peak value may reach thousands of volts, posing a potential danger to the power system and connected equipment.
Although voltage spikes and surges are both phenomena of abnormal voltage increase in power systems, they differ in duration, causes, and impacts on power systems. Voltage spikes are extremely short-lived but extremely high in peak value, and are mainly caused by the operation of specific equipment; while surges are phenomena of instantaneous overvoltage, which may be caused by a variety of reasons, including lightning activity. Both can cause damage to power systems, so understanding and preventing these phenomena is critical to protecting equipment and maintaining the safe operation of power systems.
how much automatic voltage protector matters
An automatic voltage protector（AVP） is an electrical device that monitors the voltage in a circuit and automatically cuts off the power supply when the voltage is too high or too low, thereby protecting the equipment from damage.
The working principle of the AVP is to monitor the voltage fluctuation. When the voltage fluctuation reaches the set threshold, the voltage protector will automatically cut off the power supply to protect the device from damage. Generally speaking, the voltage protector can protect the device from low voltage, over-high voltage, instantaneous voltage mutation, etc.
Is it necessary to use an automatic voltage protector（AVP）?
For some devices with low power consumption and stable voltage, it may not be necessary to use a voltage protector. However, for devices with high power consumption and large voltage fluctuations, it is very necessary to use a voltage protector. Especially when the grid voltage fluctuates greatly, the role of the voltage protector is more obvious.
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