Surge protector is an electronic device that provides safety protection for various electronic equipment, instruments and communication lines. However, in practical applications, the surge protector is not the only name for the electronic device, and many friends do not know how to represent the surge protector in the circuit diagram. How much do you know about surge protector symbols? Today, I will take you to know more about our familiar friend - surge protector. If you want to know about surge protector symbols, first understand the basics of surge protectors.
Surge protector symbol
Surge protector symbol, the full English name of the surge protector is Surge protection Device, and the English abbreviation is SPD. There are many other names for surge protectors, including power surge protectors, surge protectors, surge protectors, etc. These can all refer to surge protectors in daily communication.
Surge protector, suitable for AC 50/60HZ, rated voltage 220V/380V power supply system, to protect indirect lightning and direct lightning effects or other transient overvoltage surges, suitable for home, tertiary industry and industry Field surge protection requirements. The function of the surge protector is to limit transient overvoltage and discharge surge current. It is generally connected in parallel with the main circuit, and usually has the nature of high impedance. When TOV occurs in the circuit, it will conduct and discharge the surge current. In conduction mode, it can be regarded as a direct ground wire, which can discharge the surge current in the main circuit to the ground wire.
Surge Protector Symbol - High Impedance
The surge protector symbol also includes various circuit units, such as Un, Up, Uc, Iimp, Imax, which have different meanings. Un means the nominal working voltage of the surge protector; Up means the limit voltage of the surge protector under the condition of rated discharge current; Uc means the maximum AC voltage RMS or DC that can be continuously and lastingly applied to both ends of the surge protector Voltage. Iimp is a technical parameter that represents 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. Depending on the model of the surge protector, the value represented by the symbol will also be different, depending on the number indicated on its nameplate.
Surge Protector Symbols - Parameters
Surge protector symbols also include component symbols. For example, the surge protector can be expressed as YSPD-25HA-3PN-1, which is a model of a first-class surge protector from Hangzhou Yizao Technology Co., Ltd. This integrated 1+2-class surge protector is based on IEC And GB standard design, using unique MOV and graphite gap series technology, suitable for 240/415VacTN, TT three-phase system, can withstand 25KA lightning impulse current, usually installed in LPZ0 area and LPZ1 area, with no leakage current, no freewheeling current, It has the advantages of low residual voltage, can be monitored, and easy to install. It is widely used in various power protection.
