1. Turn off the main switch of the solar PV installation following the
procedures according to the PV installation or solar Inverter instruction
manual.
2. Turn off all disconnection switches and disconnect each string.
3. In case of presence of SPDs (Surge Protection Devices) they must be
disconnected during all testing.
4. Before measurement, it is recommended to remove any electrical /
electronic device with lower withstand voltage rating than the test
voltage that is connected to the circuit under test.
5. If N-terminals of strings in circuit under test are earthed,
disconnect them before starting measurement.
(4) Confirm the voltage rating of the circuit under test, and press the button for
rated measurement voltage to select the voltage applied.
* A long press (2 sec or longer) is required to select 1000V.
* It is possible to disable 1000V range.
[How to disable/enable 1000V range]
1. Keep the 1000V button held down and power on the instrument.
2. Wait for about 5 seconds with the 1000V button held down to disable/
enable 1000V range.
[How to confirm 1000V is surely disabled]
The LCD shows “no” when pressing 1000V button.
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