February 2020
|
Solar Stik
®
, Inc.
104
|
System Setup and Operation Manual for ATSC MS3 L0
Procedure to Measure PAM V
oc
30’ Solar Leash
A(-)
C(+)
B
*
*
*
* Positive and
negative PAM output
leads (respectively)
To measure V
oc
from a single PAM,
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 PAM 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 quarter panels as described in the next section (and Figure 3).
Procedure to Measure V
oc
of a Single PAM Quarter Panel
To measure the V
oc
of a PAM quarter 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 quarter panel and should be
~15 V under ideal-sun conditions.
• If all of the quarter panels are performing up to specs,
replace the Solar Cable and retest.
• If the V
oc
of a quarter panel is significantly below (less than
half) 15 V under ideal-sun conditions, replace the quarter
panel.
• If a replacement quarter panel is not available, connect
the remaining quarter panels to assemble a partial PAM.
+
-
Figure 36. Procedure to measure PAM Voc
Figure 37. Procedure to measure PAM
quarter panel Voc
