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ELECTRICAL INSTALLATION
Caution
• Avoid all electrical hazards when installing, wiring,
operating and maintaining all panels.
• Do not connect panels that have different electrical
properties or physical configurations in the same
system.
• Match the polarities of cables and terminals when
making the connections; failure to do so may result in
damage to the panel.
• When reverse currents can exceed the value marked
on the name plate, a properly rated and certified
over-current device(fuse or circuit breaker) must be
connected in series with each panel or string of panels.
• The rating of the over-current device shall not exceed
the maximum series fuse rating marked on the name
plate.
• The panel contains factory installed bypass diodes
located inside the junction box.
• When installing the system, it is recommended to
install a lightning rod to protect the system.
• The induced overvoltage by lightning can cause the
system damage, you should design conductor loop
connection as minimum as possible.
• The junction box should not be opened. Opening the
junction box will void the warranty.
• Panels with a suspected electrical problem should be
returned to LG Electronics for inspection and possible
repair or replacement as per the warranty conditions
provided by LG Electronics.
Electrical Connections
• Shock hazard may occur near the solar modules
electrical connections.
• Modules may be connected in series and/or parallel
to achieve the desired electrical output as long as it
is within the guidelines on the product specification
sheet.
• Please use only the same type of modules in a
combined source circuit.
• Do not disconnect the module under when it is
operating. Shock hazard may occur near the solar
modules connection means.
06
• When the module installing in series or in parallel (e.g.
using for extension cables, etc.), the connector of each
module should be the same products. (mated with its
original female or male connector of the same supplier)
Diodes
• All LG modules are equipped with factory installed
bypass diodes. The factory-installed diodes provide
proper circuit protection for the module from
unexpected shadows.
I
(AV)
25A
F
V
(max)
0.6V
F
V
50V
RRM
200°C
T
(max)
j
R
2.0°C/W
TH
Diode specification and configuration
Series Connection
• The solar modules may be wired in series to produce
the desired voltage output.
• The current of each module connected in series
should be the same.
•
The maximum number of series connected modules
can be determined by basis on maximum system
voltage, the 125% safety factor, and the module Voc
which can be checked in "Product Specifications" in
this document.
•
The maximum solar module configuration can be
found in "Product Specifications".
.............
Series connection for more voltage
1
2
3
4
D1
D2
D3
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+
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