HOW IS THE ELECTRICITY FED INTO THE GRID?
WHAT DOES "1 KWP PV-FACILITY" MEAN FOR EXAMPLE?
MOUNTING SYSTEM
ASSEMBLY OPTIONS
THE FUNCTION OF AN INVERTER
HOW MUCH SPACE IS REQUIRED?
WHAT IS THE WORKING LIFE OF A SOLAR POWER PLANT?
DOES THE PHOTOVOLTAIC PLANT NEED TO BE CLEANED REGULARLY?
How is the electricity fed into the grid?
Photovoltaic modules generate direct current. For this reason the direct current is first passed through an inverter. This transforms the direct current into alternating current with a frequency of 50 Hertz and a voltage of 230 V (so-called domestic electricity). If required, other voltages and frequencies are possible. Next a cable is laid straight from the inverter output to the feed-in meter, which measures the quantity of power generated.
What does "1 kWp PV-facility" mean for example?
1 kWp refers to the peak output of the installed solar modules. Naturally, the output depends on the solar irradiation. In this respect, peak output in our climes is achieved during the summer months at noon and in cloud-free conditions.
Mounting system
There are several different ways of attaching a solar power plant to the building. We offer you every available mounting option: The mounting system for integrated systems in-roof and full-roof with a particularly slim-line appearance; positioned systems, on-roof and flat roof enabling simple installation on prefabricated roofs.
Assembly options
Pitched roof: Hooks are affixed to the rafters that protrude from beneath the tiles and allow the assembly of rails above the roof skin. The modules are then mounted on these rails. It is also possible to integrate the facility into the roof, in which case the tiles are replaced.
Flat roof: Substructures are mounted on the roof, onto which the modules are mounted at the optimum angle.
Open-area facilities: As with the flat roof option, specially designed substructures hold the modules.
The function of an inverter
Inverters work automatically and always feed the maximum amount of power into the grid. Here the maximum power point (MPP) of the solar module is determined automatically. The sine wave (~) = alternating current voltage (230 Volt) of our electricity grid is measured by the inverter several thousand times per second and the dc voltage fed into the electricity grid accordingly. Inverters do not require any maintenance. Their life expectancy is the same as any electronic appliance (e.g. television).
How much space is required?
To install a photovoltaic plant all you need is some open space or a suitable roof - regardless of whether a flat roof or pitched roof. What is most important is that the area is not in the shade. The pitched roof should be south-facing if possible and ideally have an angle of inclination of 30°. For our applications it should have a mounting area of at least 400 m². With flat roofs the minimum area should be 800 m².
What is the working life of a solar power plant?
A photovoltaic plant will have a life expectancy in excess of 30 years. The module manufacturers offer a performance guarantee of 25 years on the modules. The performance guarantee warrants a minimum performance of 80 percent of the minimum performance. All components of the facility are designed to have a very long service life and to be virtually maintenance-free.
Does the photovoltaic plant need to be cleaned regularly?
Not usually. In this country rain is generally sufficient to keep the facility clean enough to be fully functional. In certain regions where air pollution is heavier (industrial plants) it may be necessary to clean the facility periodically.
