A current transformer secondary connection wire detection apparatus

The utility model discloses a current transformer secondary connection wire detection apparatus comprising a housing. A battery, a resistor R1 to a resistor R3, an indicating lamp L and a relay are installed in the housing. The upper end surface of the housing is provided with two binding posts. Detection terminals used for connecting to secondary connection wires of a detected-current transformer. A control circuit and an indication loop are arranged on the two ends of the battery in a parallel mode. The control circuit comprises the resistor R1, the resistor R2 and the two binding posts which are connected to the two ends of the battery in a mode of series connection. A relay coil QD is in parallel connection with the two ends of the resistor R2. The indication loop comprises a relay normally open contact QDJ and the indicating lamp L in series connection with the two ends of the battery. The resistor R3 is in parallel connection with the two ends of the indicating lamp L. According to the current transform