Polarity tester of current transformer
A technology of current transformer and tester, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve the problems of time-consuming, laborious, low automation process, etc., to ensure the safety of the power grid, improve the reliability of power supply, and facilitate the polarity test. Effect
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[0014] Such as figure 1 As shown, a current transformer polarity tester has a detection circuit, and the detection circuit includes a signal access circuit connected to the secondary side of the current transformer for outputting positive and negative peak voltages, connected to the signal access circuit respectively The signal processing circuit that converts the positive and negative peak voltages into +5V voltage is connected with the signal processing circuit to the signal indication circuit used to indicate the polarity of the current transformer.
[0015] Such as figure 2 As shown, the signal access circuit includes diodes D1, D2 and electrolytic capacitors C1, C2. The cathode of diode D1 is connected to the anode of diode D1, its anode is connected to the negative pole of electrolytic capacitor C1, and the cathode of diode D2 is connected to the positive pole of electrolytic capacitor C2. The positive pole of the capacitor C1 and the negative pole of the electroly...
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