Benning PV 1-1+ - Null balancing of the 4 mm safety measuring lines

Operation
5.3 Configuration
5290 / 06/2023 en BENNING PV 1-1+ 27
5.3.3 Null balancing of the 4mm safety measuring lines
Before measuring the protective conductor resistance(R
PE
) with new safety measuring lines,
carry out a null balance.
Requirements
• Approved safety measuring lines
• Please observe the requirements for measuring [}page24].
Figure3: Null balancing of the 4mm safety measuring lines
Procedure
1. Connect the 4mm safety measuring lines to the device [}page25].
2. Short-circuit the two measuring probes of the 4mm safety measuring lines by contacting
them and start the null balance by pressing the “Nullbalance”key until the
“Nullbalance”symbol is shown on the digital display.
Please note that measuring line resistances of up to 10Ω can be compensated for.