The equipment is provided with six-phase high-power current source, which can provide high-precision high-power controllable current up to 30A for each phase. Through multi-phase parallel connection, the maximum output current can be 180A, which can be applied to the test of electromagnetic high-load relay protection device. It can meet the test of all kinds of relay protection devices, and is favored by users due to its flexibility, accuracy, portability and reliability. The built-in test module can be used for the commissioning and verification of main transformer, line, generator-transformer unit, electric iron and other devices. The model without IPC is optional, which is operated by external laptop and supports automatic test function.