Direct current power supply insulation detection device and detection method
A DC power supply and detection device technology, applied in the field of measurement and testing, can solve the problems of high cost and large error, and achieve the effects of low cost, large measurement range and high measurement accuracy
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[0056] in figure 2 As shown in the logic diagram of the first embodiment of the DC power supply insulation detection device of the present invention, the DC power supply insulation detection device can be used to detect the insulation resistance of the DC bus to the ground, including the insulation resistance value of unipolar to ground and the insulation resistance of bipolar simultaneous grounding. value. The DC power detection device includes a pair of balanced bridge resistances (not shown), a pair of detection bridge resistances (not shown), a voltage detection module 10, a current detection module 20, and a calculation module 30. Among them, a pair of balanced bridge resistors are respectively fixedly connected between the DC positive and negative buses and the ground. A pair of detection bridge resistors are respectively connected between the DC positive and negative buses and the ground through corresponding switches. The voltage detection module 10 is used to detect ...
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