A kind of mutual inductor load box calibrating installation

The utility model provides a kind of mutual inductor load box calibrating installation, comprise housing, Switching Power Supply, power amplifier, gear switch circuit, sample circuit and processor, wherein: power amplifier, gear switch circuit, sample circuit and processor are arranged in housing; Switching Power Supply provides power supply for power amplifier, the power source of power amplifier to input amplifies, and the signal after amplifying is passed to gear switch circuit, gear switch circuit selects voltage or electric current gear according to power input source size, sample circuit is sampled to the voltage of input or current signal, and by the signal of employing to processor, processor processes in real time to the data gathered, and carries out controlling of sampling by power amplifier simultaneously.The utility model structure is simple, easy to carry, measurement is accurate, meets industry spot requirement.