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Operating situation 1 (no overload)
The solar panel’s actual charging power ≤ rated power of charge controller
Operating situation 2 (no overcurrent)
The solar panel’s actual charging current ≤ rated current of charge controller
When the charge controller is working in operating situation 1 or 2 charging takes place with the
current or power the solar panel actually produces and the charge controller traces and utilises the
maximum power of the solar panel.
WARNING!
Even if the power of the solar panel does not exceed the rated power of the charge controller, but
the highest open circuit voltage of the solar panel is higher than 60 V (Tracer **06 AN) respective
100 V (Tracer **10 AN) (at lowest ambient temperature), the charge controller can be damaged.
Operating situation 3 (overload)
The solar panel’s actual charging power > rated power of charge controller
Operating situation 4 (overcurrent)
The solar panel’s actual charging current > rated current of charge controller
When the charge controller is working in situation 3 or 4 charging takes place with the charge
controller’s rated current and rated power.
WARNING!
If the power of the solar panel exceeds the rated power of the charge controller and the open
circuit voltage of the solar panel is higher than 60 V (Tracer **06 AN) respective 100 V (Tracer
**10 AN) (at lowest ambient temperature), the charge controller can be damaged.
If solar panels that during the hours of most intensive solar radiation produce more power than the
rated power of the charge controller are used, charging will take place with the rated power of the
controller during these hours. This means that more of the day’s solar energy is utilised for battery
charging than if a smaller solar panel with less power had been used. In practice, however, solar
panels should be chosen so that their maximum power is no more than 1.5 times the rated power
of the charge controller. Solar panels with significantly higher maximum power than this are not
only overdimensioned, they also produce a higher open circuit voltage as a result of the effect of the
ambient temperature. This in turn increases the risk of damaging the charge controller. A reasonable
choice of surplus power is therefore important. The recommended maximum power for solar panels
that should be connected to this charge controller is given in the table below.
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