Relay protection voltage and current power test pen and test method thereof

The invention relates to a relay protection voltage and current power test pen and a test method thereof. The test pen is used for relay protection device starting voltage, relay protection device input motion voltage and non-electric quantity protection starting power tests and circuit breaker opening and closing coil minimum motion voltage tests. A signal power interface of the test pen and a relay protection device or a circuit breaker share the same direct-current power supply, and a voltage dividing and regulating module of the test pen controls the magnitude of direct-current output voltage, so that the input quantity of the protection device, non-electric quantity protection and opening and closing actions of the circuit breaker are realized, and voltage, current and starting power are automatically recorded; the testing of the input operating voltage of the protection device, the starting power of non-electric quantity protection and the lowest operating voltage of opening and closing of the circuit b