Preparing for Measurement

This function can find a ground fault in a string of solar panels connected in series.
The ground fault point can be probed by measuring the voltage of a string's disconnect switch in which insulation failure is found.
Only the following voltages need be measured.
Voc(P-N) : The open circuit voltage of the string Voc (between P and N)
V(P-E) : The voltage between the positive conductor and ground (between P and E)
V(N-E) : The voltage between the negative conductor and ground (between N and E)

・This function is available only when the string has poor insulation. Check the insulation resistance before use.
・Disconnect the main switch of the connection box and the string's disconnect switch to measure the voltage.
If they are left "on," the location cannot be determined correctly.
・If there are multiple solar panels with ground fault, it cannot be determined correctly.