Q: How to deal with abnormal output voltage of one phase of the instrument?
Answer:
1. If the abnormal phase has a normal output current and a significantly low output voltage, it is possible that the voltage line is loose or disconnected, and the voltage line needs to be replaced before testing.
If the voltage and current are both 0, it is possible that both the current and voltage lines are broken at the same time, or there is a fault with the instrument. The power output should be short circuited to the voltage measurement using a short-circuit wire to check if the instrument is working properly. If the instrument is working properly, the test line needs to be replaced before testing.
