Insulation detection device, insulation detection equipment and insulation detection method

The invention relates to an insulation detection device, an insulation detection device and an insulation detection method, a to-be-detected network channel in a plurality of network channels is selected through a channel selection module, channel selection information is generated, and a control module connected with the channel selection module generates an insulation test instruction according to the channel selection information. A test module connected with the plurality of network channels and the control module respectively applies a first test voltage to the to-be-tested network channel according to the insulation test instruction, and the control module is also connected with the plurality of network channels respectively, obtains a second test voltage output by the to-be-tested network channel, and outputs an insulation detection result of the to-be-tested system according to the second test voltage. Therefore, the insulation monitoring efficiency and the insulation monitoring accuracy of the nuclea