About Surge Protector Symbols - How Much Do You Know? View Now
Surge protector is an electronic device that provides safety protection for various electronic devices, instruments and meters, and communication lines. However, in actual applications, surge protective device is not the only name for this electronic device, and many friends do not know how to represent surge protector in circuit diagrams. How much do you know about surge protector symbols?
surge protection device symbol, the full English name of surge protector is Surge protection Device, and the English abbreviation is SPD. There are many nicknames for surge protectors, including power supply lightning arrester, surge protector, lightning arrester, etc., which can refer to surge protectors in daily communication.
Surge protector, suitable for AC 50/60HZ, rated voltage 220V/380V power supply system, to protect against indirect lightning and direct lightning effects or other transient overvoltage surges, suitable for family residences, tertiary industry and industrial fields surge protection requirements. The function of the surge protector is to limit transient overvoltage and discharge surge current. It is usually connected in parallel to the main circuit and has high impedance. When TOV appears in the circuit, it will conduct and discharge surge current. At this time, it is in the conduction mode and can be regarded as a directly grounded wire, which can discharge the surge current in the main circuit to the ground wire.
The surge protector symbol also includes various circuit units, such as Un, Up, Uc, Iimp, and Imax, and the meanings of these symbols are also different. Un represents the nominal working voltage of the surge protector; Up represents the limiting voltage of the surge protector under the rated discharge current; Uc represents the maximum AC voltage RMS or DC voltage that can be applied to both ends of the surge protector continuously and continuously. Iimp is a technical parameter indicating the current capacity of the surge protector (the maximum lightning energy that the surge protector can withstand); Imax represents the maximum discharge current of the surge protector. The values represented by the symbols will be different for different models of surge protectors, depending on the numbers marked on its nameplate.
