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133
August 2020
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Solar Stik
®
Inc.
PSS-G/RAID Alternative Energy System Deployment Guide
Procedure to Measure PV Array V
oc
30’ Solar Leash
A(-)
C(+)
B
*
*
*
* Positive and negative
PV array output leads
(respectively)
To measure V
oc
from a single PV array,
carefully
place the leads of the voltmeter on pins A and C
in the bayonet connector at the end of the Solar Leash (DO NOT SHORT THESE PINS). Pin B is
unused. The rated V
oc
for the four-panel PV array is ~ 63; however, the voltage may vary. Under
ideal-sun conditions, the reading should be 50 V or more.
• If the V
oc
is significantly below (less than half) 50 V under ideal-sun conditions, measure the V
oc
of
the individual panels as described in the next section.
Procedure to Measure V
oc
of a Single PV Array Panel
To measure the V
oc
of a PV array panel,
carefully
place the
leads of the voltmeter in/on the quarter panel positive (+)
and negative (-) connector terminals of the (DO NOT SHORT
THESE TERMINALS). The voltage measurement across the
terminals of these leads is the V
oc
of the panel and should be
~15 V under ideal-sun conditions.
• If all of the panels are performing up to specs, replace the
Solar Cable and retest.
• If the V
oc
of a panel is significantly below (less than half) 15
V under ideal-sun conditions, replace the panel.
• If a replacement panel is not available, connect the
remaining panels to assemble a partial PV array.
+
-
Figure 72. Procedure to measure PV Array Voc
Figure 73. PV array panel positive and
negative cables/terminals
