New energy vehicles, especially pure electric vehicles, will be the main trend in the future development of automobiles. This productDevices that meet the remaining protection functions of Type B or Type A, in compliance withGB/T 18487 standard,
AC type: refers to pure AC residual current waveform detection, commonly known as power frequency AC leakage, with a relatively single waveform. It has been completely banned in countries such as Europe, and is also banned in the vast majority of domestic scenarios;
Type A: It adds detection of pulsating AC and pulsating DC waveforms on the basis of AC type, and is currently widely used in common industrial environments both domestically and internationally;
Type B: On the basis of Type A, detection of smooth DC, intermittent DC, high-frequency 1kHz, and various composite waveforms has been added, which is a higher requirement for leakage protection. Currently, it is used in some domestic or medical environments with DC electrical equipment abroad, and is gradually becoming popular in the field of vehicle charging;
characteristic:
Short circuit and overload protection
Lightning and overvoltage protection
Temperature and humidity protection
Insulation monitoring and fault alarm
Mechanical strength and protection level
Electromagnetic compatibility testing to ensure that the equipment does not cause interference to other devices
Application:
Communication charger: a device that provides AC charging for electric vehicles,
DC charger: a device that provides fast DC charging for electric vehicles.
Charging station: The overall facilities of the charging station, including the above-mentioned charging machines, ensure their safety and efficiency.
(Self built timing diagram)