2
Conventions used:
WARNING! Warnings identify conditions or practices that could result in personal injury;
CAUTION! Caution identify conditions or practices that could result in damaged to the
unit or other equipment connected.
Important: The inverter will reduce its output generation to protect its electronic circuits
from overheating and any damage under high temperature environment. For maximum power
output in high temperature, it’s recommended to mount the inverter in a shaded location with
good ventilation.
Angle of the Sun
The angle of the sun in relation to the PV array surface—the array orientation can dramatically
affect the PV array output. The array energy output will vary depending on the time of day and
time of year as the sun’s angle in relation to the array changes. Sunlight output decreases as
the sun approaches the horizons (such as in winter in Europe) due to the greater atmospheric
air mass it must penetrate, reducing both the light intensity that strikes the array’s surface and
spectrum of the light. In general, you can expect only four to six hours of direct sunlight per
day depending on what part of Europe the inverter is installed.
Partial Shade
Shading on a single PV module of the array will reduce the output power of the entire system.
Such shading can be caused by something as simple as the shadow of a utility wire or tree
branch on part of the array’s surface. This condition, in effect, acts like a weak battery in a
flashlight, reducing the total output, even though the other batteries are good. However, the
output loss is not proportionate to shading even a tiny bit of shading will reduce the PV power
to the inverter. The inverter is designed to maximize its power production in all of the above
situations using its proprietary MPPT algorithm.
Other Factors
Other factors to reduce power generation of a solar system are:
Dust or dirt on the modules
Fog or smog
Mismatched PV array modules, with slight inconsistencies in performance from one
module to another.
Inverter efficiency
Wire losses
Utility grid voltage
2.
Important Safety Warning
Before using the inverter, please read all instructions and cautionary markings on
the unit and this manual. Store the manual where it can be accessed easily.
This manual is for qualified personnel. The tasks described in this manual may be performed
by qualified personnel only.
General Precaution-