METREL EurotestPV Lite, Instruction Manual

Page: 51 / 75

MI 3109 EurotestPV Lite Measurements
51
Test circuits for automatic measurement
Figure 5.43: Connection for automatic measurement with universal PV test lead
Automatic measurement procedure

Select AUTOTEST mode from main menu.

Set environmental parameters, module and measuring settings (optional).

Select the AUTO sub-function using the function selector keys.

Set the required insulation test voltage .

Enable and set limit value (optional).

Connect universal PV test cable to the instrument (see Figure 5.43 ).

Connect environmental probes to the instrument (optional).

Connect accessories to the PV system (see Figure 5.43 ).

Press the TEST key to perform the measurement.

After the measurement is finished wait until tested item is fully discharged.

Store the result by pressing the MEM key (optional).
Figure 5.44: Example of automatic measurement result
Displayed results:
Roc+ ............. insulation resistance between array negative and earth
Roc- ............. insulation resistance between array positive and earth
Roc ............... calculated insulation resistance between shorted both outputs and
earth
Uoc meas ..... measured open voltage of the panel
Isc meas ....... measured short circuit current of the panel
Uoc stc ......... calculated open voltage at STC
Isc stc ........... calculated short circuit current at STC
U: ................. actual voltage on test inputs