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to fire and can cause heavy damage. Users must be skilled to disconnect the PV
system safely in this case.
• Do not use the instrument in PV systems with voltages higher than
1500 V d.c. and/or currents higher than 20 A d.c.! Otherwise, the
instrument can be damaged.
• Do not connect external voltage between P/S and PE terminals.
Max allowed voltage: < 10 V d.c., max allowed current: < 1 A d.c.!
Otherwise, the instrument can be damaged.
1.1.2 Warnings related to safety of measurement functions
Do never connect test leads to output of PV module / string!
R ISO PV
IEC 62446 Autotest
Do not touch the test object during the measurement or
before it is fully discharged! Risk of electric shock!
When insulation resistance measurement has been
performed on a capacitive object, automatic discharge may
not be done immediately! The warning message and the
actual voltage are displayed during discharge until voltage
drops below 30 V.
I/U curve
Uoc/Isc
IEC 62446 Autotest
Do not disconnect the test terminals during the
measurement. Risk of electric shock and/or arcs!
1.1.3 Notes related to measurement functions
If a voltage of higher than 10 V (AC or DC) is detected
between test terminals, the measurement will not be
performed.
Parallel loops may influence on test results.
If external voltage is detected on the test terminals the
instrument will check if conditions are appropriate for
proceeding with the test. Appropriate notifications are
displayed.
Conditions for starting the test (regarding external voltage on
test terminals):
Type Riso=[Roc+, Roc-]:
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