DNC three-phase energy meter field calibrator
GY481 Three-phase precision programmable power supp
GY-HG Intelligent Transformer Calibrator
GY9201 AC and DC indicator verification device
GY4501 single-phase energy meter field calibrator
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GY4500 Secondary Voltage Drop Tester
Instructions for use |
After connecting the wire according to the figure, press the test button for 2 seconds. If the green light flashes, it is the same polarity, if the red light flashes, it is the reverse polarity |