MI 3109 EurotestPV Lite
Safety and operational considerations
8
Continuity functions
Continuity measurements should only be performed on de-energized
objects!
Notes related to measurement functions:
General
PASS / FAIL indication is enabled when limit is set. Apply appropriate limit value
for evaluation of measurement results.
The A 1384 PV Safety Probe provides additional safety and can be optionally
used for PANEL, UOC/ISC, I/V, INVERTER (AC, DC) and RISO measurements.
Fused A 1385 PV test lead must be used for INVERTER AC/DC measurements.
PV continuity test lead should be used for the Continuity tests.
Insulation resistance of PV systems
The
instrument
automatically
discharge
tested
object
after
finished
measurement.
A double click of TEST key starts a continuous measurement.
The insulation measurement is carried out according to test method 1 in IEC / EN
62446 (Test between panel / string / array negative and earth followed by a test
between panel / string / array Positive and earth).
Continuity functions
If a voltage of higher than 10 V (AC or DC) is detected between test terminals,
the continuity resistance test will not be performed.
Before performing a continuity measurement, where necessary, compensate test
lead resistance.
Parallel loops may influence test results.
Panel, Inverter, Uoc/Isc, I-V
Before starting a PV measurement the settings of PV module type and PV test
parameters should be checked.
Environmental parameters (Irr, T) can be measured or entered manually.
Environmental conditions (irradiance, temperature) must be stable during the
measurements.
For calculation of STC results measured Uoc / Isc values, irradiance, cell
temperature, and PV module parameters must be known. Refer to Appendix E
for more information.
Always perform zeroing of DC current clamps before test.
Auto
Consider all notes for individual tests.
The Automatic test cannot be carried out with the A 1384 PV Safety Probe.
The insulation resistance results may slightly differ in comparison to results in
Single test mode because of the three wire connection and the internal
resistance of the measuring instrument.
