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NexSens Technology, Inc.
iSIC User‟s Manual 88
4.3.2 Solar Panels
Solar panels are used in remote applications where AC power is inaccessible. Photovoltaic cells
form the body of a solar panel or module. These cells transform the sun‟s rays into useable
electric energy.
A solar panel is typically installed for charging the internal battery.
Warning: Do not connect third party solar panels without solar regulators as unregulated power
can spike and cause damage to the iSIC and sensors connected to it.
Warning: Solar panels generate electrical current in the presence of sun. Keep the MS2
connector on the solar cable disconnected from the iSIC MS2 connector during installation to
keep the iSIC powered off.
Orient the solar panel so it receives maximum incident solar radiation over the course of a year.
Preferably, orientation is facing south if the panel is located in the northern hemisphere, and
facing north in the southern hemisphere. The tilt angle for your site can be found in the
following table.
Latitude (N or S Hemisphere)
Tilt Angle (From Horizontal)
0-10
10
11-20
Latitude + 5
21-45
Latitude + 10
46-65
Latitude + 15
>65
80
* From Design Aids for Small PV Power Systems, Solarex Corp.
The size of your solar panel should be determined by the amount of sunlight the panel is
exposed to and power drain from connected sensors and data loggers.
Contact NexSens for determining the best size solar panel.
Avoid shaded areas and keep the panel clear of debris and dirt. Doing so, as well as using the
correct orientation will maximize battery life and keep your system up and running year round.
NexSens offers three sizes of solar panels; 10W, 20W, 30W. Typically a 20W solar panel is the
best choice with an iSIC data logger. This will ensure enough charge is given to provide constant
power to the iSIC even without a few days to a week without sun.
What’s included:
Integral 12V charge regulator
Adjustable pole mount bracket with hose clamps for
2 inch poles
Pre-wired 15 ft. of power cable with iSIC compatible
MS2 connector