|
101
February 2020
|
Solar Stik
®
, Inc.
System Setup and Operation Manual for ATSC MS3 L0
CAUTION
•
Photovoltaic panels produce electricity when exposed to light
•
Live power may be present at multiple points
•
Never route the cables through standing water
•
All cables and connections should remain dry
Required Tools and Equipment
• Functional Power Hub 2400 connected to a 24 VDC power source such as a functional 24VDC
Expander Pak/battery. Solar Power alone will not power up a 24VDC Power Hub 2400
• Digital Multimeter
Maximum Power (Vmp) and Open Circuit Voltages (Voc)
Voltage “
m
aximum
p
ower” (V
mp
) is the voltage at which the maximum power of a panel or array is
produced when connected to a charge controller, or when the panel is considered “under load” such
as a charge controller (Power Hub or Power Pak).
Voltage “
o
pen
c
ircuit” (V
oc
)
is unregulated panel voltage and measured directly from the leads of a
panel or an array when
not
connected to a “load” such as a charge controller (Power Hub or Power
Pak).
The V
oc
of a single PAM quarter panel is approximately 15.72 V under standard test conditions
(STC). In a PAM, four (4) panels are connected in series; therefore, the V
oc
for the four (4) panels
could theoretically be as high as 62.88 V. Once the panels are connected to the Power Hub (i.e., the
panels are connected to a “load”), it is more likely that the operator will see voltages around 50 V
mp
reported on the User Interface.
The V
oc
and V
mp
should be measured under “ideal solar conditions” if possible. This means that the
panels should be oriented directly at the sun and unshaded on a clear day to identify the maximum
V
mp
and V
oc
.
