Benning PV 1-1+ Operating Manual page 31

Operation
5.5 Automatic PV measurement
Procedure
1. Connect the PV safety measuring lines to the device [} page 25].
2. Bring the PV safety measuring lines into contact with the individual PV module or the
individual PV string.
Make sure that the respective safety measuring lines are contacted properly and safely with
the PV generator.
If DC voltage is applied to the PV safety measuring lines, the PV open-circuit voltage will be
measured automatically.
3. Connect the red 4 mm safety measuring line to the device [} page 25].
4. Bring the red 4 mm safety measuring line into contact with a metal part (frame or mounting
system) of the PV generator.
If the PV generator is properly earthed, you can alternatively measure the insulating
resistance against a safe earth connection (e. g. equipotential busbar).
If the PV generator is not earthed, first measure the insulating resistance against a metal
part (frame or mounting system) of the PV generator and then against a safe earth
connection (e. g. equipotential busbar).
5. Select the desired insulation test voltage of 250 V‑DC, 500 V‑DC or 1 000 V‑DC. To do this,
press the "V
6. Start the automatic PV measurement. To do this, press the "Auto" key.
When the measurement is completed, the measured values will be shown on the digital
display for approx. 20 seconds or until a key is pressed.
If the measured insulating resistance is higher than the preset limits, the "
shown next to the measured value on the digital display. If the measured value is lower than
the limits, the " " symbol will be displayed.
7. Press the "Save" key to store the measured value to the next free storage location available.
5290 / 06/2023 en
" key until the desired insulation test voltage is shown on the digital display.
ISO
BENNING PV 1-1+
" symbol will be
31