Multifunction PV Analyzer
Test Setup
19
Grounding System
To troubleshoot the grounding system with the
R
LO
Continuous Measurement method:
1. Push
for
R+ Positive
or
for
R- Negative
and follow the on-screen prompts.
Polarity Test
The polarity test verifies to IEC 62446-1 Clause 6.2 that the positive and negative wires are
correctly connected to the solar system combiner box, inverter, or switch gear.
XW
Warning
To prevent personal injury or damage to the system, all connections must use the
correct polarity.
To test polarity:
1. Turn the rotary switch to
-/+ POLARITY
.
2. Connect the red test lead to the positive connector of the PV string and the blue test lead
to the negative connector of the PV string.
Tip: Push
to see the connection diagram.
3. Follow the on-screen prompts.
The upper display shows the actual voltage connected to the test leads. For voltages >5 V
the PV Analyzer determines the measurements as
or
. All positive voltage show as
PASS
and all negative voltages as
FAIL
.
If ac voltage is detected, a warning shows on the display.
PV String Combiner Box
This test procedure verifies to IEC 62446-1 Clause 6.3. Do this test before any string fuses or
connectors are connected for the first time:
Connect all negative fuses or connectors so strings share a common negative bus.
Do not connect any positive fuses or connectors.
Measure the open circuit voltage of the first string, positive (red test lead) to negative (blue
test lead), and assure that it is an expected value.
Continue with subsequent strings, positive to negative, and assure that it is the expected
value and do not differ more than ±15 V from the strings previously measured.
To test string fuses:
1. Turn the rotary switch to
-/+ POLARITY
.
2. Push
to see the connection diagram.
3. Follow the on-screen prompts.
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