3.3 kV or More Explosion-proof Electrical Short-circuit Protection Performance Test Device Based on Multi-magnetic High-current Device

The coal mine complex and changing environment has high requirements for the 3.3 kV or more mine explosion-proof electrical protection performance. The overload test and short-circuit test that mainly inspecting equipment's ability to withstand high current in fault conditions of overload test and short circuit are top priority to protect performance test, this article describes the application of multi-magnetic high-current device in protection performance test devices.