The device is based on 32-bit single chip microcomputer, supplemented by industrial peripheral chip, precision small transformer, small special relay, and scientific algorithm. The protection is reliable and sensitive, and the measurement accuracy is high. A variety of anti-interference measures are adopted to make the device have high anti-interference ability. In the design of the device, standardized and modular hardware design, high-precision A / D conversion and special power module are adopted.

  In the user interface, large screen LCD Chinese display, automatic backlight, menu type operation instructions, important operation authorization password, effectively prevent the occurrence of misoperation.

Major function

l  Over current protection of power supply line

l  Short circuit protection of power supply line

l  Current unbalance protection of power supply line

l  Zero sequence over current protection of power supply line

l  Leakage blocking protection of power supply line

l  Leakage action protection of power supply line

l  Voltage open phase protection of power supply line

l  Under voltage protection of power supply line

l  Overvoltage protection of power supply line

l  Zero sequence overvoltage protection of power supply line

l  Self diagnosis function