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3. It is strictly forbidden to short-circuit the voltage test channels, open-circuit the current test channels, or introduce external AC/DC power into the voltage source, current source, or output terminals of the instrument, as this may damage the instrument;

4. To ensure test accuracy, disconnect the external circuit of the protection device and ground the N of voltage and the N of current at the same point;

5. Keep the air flow through the ventilation openings on the side of the chassis unobstructed; do not block the vents to avoid affecting heat dissipation;

6. After outputting large current in single-phase or parallel, ensure the instrument has at least 30 seconds of cooling before the next test;

7. During testing, do not frequently switch the power on and off to avoid damage to the instrument or reduced test accuracy;

8. If any abnormal situation occurs during testing, cut off the power immediately;

9. Do not place the instrument outdoors where it may be exposed to rain;

10. If the instrument malfunctions, contact the manufacturer promptly; do not attempt to repair it yourself.



Note: The above information and technical parameters are compiled and released by Yangzhou Daru Electrical Co., Ltd.