Misunderstandings In Surge Protector Selection: Phase Voltage And Line Voltage
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When many people are selecting surge protectors, they often find such a problem: Why is the line voltage 380v or 440v, but the surge protector model Uc value selected by the lightning protection manufacturer is only 320v or 385v? The working voltage of the surge protector is lower than my voltage value. Can the selected surge protector installed on the line protect against lightning?
In fact, there is a misunderstanding about the voltage parameter, that is, the difference between phase voltage and line voltage.
What is the relationship between phase voltage and line voltage? Why can my surge protector work normally when the Uc value is lower than the line voltage? Next, the editor will give you a popular science of these two concepts.
