1. No display after power-on:
Solution: Is the battery dead? Please connect an external charger first. If it still doesn't work, stop using it immediately and contact the manufacturer. Do not open the instrument yourself, otherwise you may not be eligible for warranty service.
2. Unstable data during testing:
Please check if the wiring is correct, if the connections are in good contact, and if there is any particularly large interference around.
3. Negative load appears during load testing:
Solution: Reverse the clamp meter.
4. The voltage drop test of the secondary circuit of the voltage transformer is generally carried out on site with live power under actual load conditions. Therefore, the relevant contents of the "Electric Power Safety Regulations" (power line part) must be strictly implemented.
5. Double grounding is strictly prohibited in the secondary circuit of the voltage transformer to prevent short circuit on the secondary side of the voltage transformer and damage to equipment.
6. Before use, use an insulation resistance meter (or multimeter) to check whether the insulation between the cores of the dedicated measurement wires is good, whether the wires are well connected, and whether the contacts between the wire ends and the wires are firm and intact.
7. After testing the voltage drop, if you need to test the secondary load, you must disconnect the wires and replace them with the dedicated wires for load testing before testing the load.
8. The instrument should not be exposed to rain or heavy pressure.
This instrument should be placed indoors with an ambient temperature of +5°C to 40°C and relative humidity less than 85%. The surrounding air must not contain corrosive gases.
