WhisperPower 60110437, Installation Manual

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7
ENG
ITA
FRA
ESP
WHISPERPOWER PHOTOVOLTAIC MODULES
DEU
MAX CURRENT (ISC)
CABLE LENGTH
Less than 2 metres From 2 to 8 metres From 8 to 15 metres
6 A 2,5 mm
2
4,0 mm
2
6,0 mm
2
8 A 4,0 mm
2
6,0 mm
2
8,0 mm
2
12 A 4,0 mm
2
8,0 mm
2
10,0 mm
2
The cables must be of sufficient cross-section to avoid significant voltage-drop. Always use specific cable
for photovoltaic installations, resistant to atmospheric agents. The cross-section must be chosen taking into
account the cable length. The table below shows some examples:
EXAMPLES OF INSTALLATIONS (see diagrams on last page)
a. One single module with a charge regulator, battery and load. This is the optimal solution. The load can be
supplied directly by the regulator, when conditions allow, or by the battery.
b. With several modules, the best solution is to connect each one independently to a separate regulator. The
regulators can then be connected in parallel to the battery, as they are protected against reverse current.
ATTENTION: When the regulators are connected in parallel, the total current is the sum of each regulator’s
current, and therefore the cross-section of the cable to the battery must be calculated accordingly.
c. Two modules may be connected in series. In this case, the voltage is equal to the sum of the voltages of the
two modules and the current through each is the same. Only modules with the same current (i.e. same cell
type) can be connected in series.
d. In parallel connections, the voltage is the same as that of each single module (only modules of the same
voltage can be connected in parallel) whereas the currents are added together. In order to avoid wasted
energy, and overheating and even fires,
it is essential to use blocking diodes with parallel connections
(see circuit diagram) .
The choice of charge regulator depends on the configuration of the installation, the type of modules and the
battery. If you purchase your charge regulator together with WhisperPower modules, you will receive the
necessary assistance in choosing. In any case, WhisperPower will not be held responsible for damage or
malfunctioning caused by incorrect use of charge regulators, whether purchased from WhisperPower or not.
Make sure that you read the regulator’s instructions very carefully.
MAINTENANCE OF THE PHOTOVOLTAIC SYSTEM
Due to the absence of moving parts, the required maintenance is minimal. The following instructions are
important:
P
Keep the modules clean. Wash with fresh water, especially in a marine environment, to avoid damage
caused by saltwater.
P
The surface of the modules may be cleaned using neutral soap and water, wiping carefully and without
using abrasive material. Denatured alcohol (methylated spirit) can be used to remove grease etc.
P
Check the structural integrity of the installation and the electrical connections periodically.
P
Check the efficiency of the system using the monitoring functions in the charge regulators (LEDs or
displays).