The cost of electricity is a key component of the budget of both households and businesses. Taking into account the current trend of increasing the price of electricity on the market, the possibility of reducing the costs of purchasing electricity becomes important. A well-configured photovoltaic installation allows you to limit the costs of electricity only to the amount of fixed fees and thus forget about the risk of increasing electricity prices. Nationwide subsidy and relief programs allow you to significantly reduce the cost of investment and accelerate its return.
How does a photovoltaic installation work?
A photovoltaic installation is used to convert solar energy into electricity based on the photoelectric effect. This conversion takes place in photoelectric cells, which are a component of photovoltaic modules .
Check out photovoltaics at the Onninen wholesaler
Composition and principle of operation of an example photovoltaic set:
A typical photovoltaic (on-grid) installation includes the following components:
- Photovoltaic modules (panels) - mono- or polycrystalline, respectively, used to change solar energy into electricity through the internal photoelectric effect.
- Photovoltaic structure for mounting photovoltaic modules (roof or ground, for free-standing installations),
- photovoltaic inverter – a device used to convert DC current generated by modules into AC alternating current.
- Power optimizers – devices used in parts of the installation where shading of PV modules is expected (alternative element).
- Solar cables and connectors – used to supply power from PV modules to the inverter. Designed to work in difficult weather conditions, ensuring many years of failure-free operation of the installation.
- Overvoltage protection on the DC side , used to protect the inverter against overvoltages conducted via DC cables (depending on whether there is a T1/T2 or T2 type lightning protection system).
- Overvoltage protection on the AC side , used to protect the inverter against overvoltages from the building's power supply side (depending on the type of connection and the presence of a T2 or T1/T2 lightning protection system, respectively).
- Inverter circuit protection (usually overcurrent and/or residual current with a rated residual current of 100mA).
In addition to the components mentioned above, the necessary installation elements available in our offer include:
- Wires and cables for connecting the inverter to the installation (YDY, YKY),
- Protective tubes for cable management, including UV-resistant conduits,
- Cables for grounding, equalizing and overvoltage protection installations
- Ground vertical or PFe/Zn hoop iron for horizontal earthing.
Our offer also includes tools and protective equipment necessary for installation.
We will prepare a full set of photovoltaic installations for you
Onninen's offer includes all the products necessary to build a full photovoltaic system. We sell components of leading brands, ensuring a high level of quality and installation safety while ensuring a competitive price.
Write what you need and our experienced advisors will prepare a set for you!
In order to prepare a comprehensive offer for a photovoltaic set , please provide the following information:
- location of the facility,
- Planned installation power or the value of electricity consumed by the building per year,
- A drawing of the building's roof (if any),
- Determination of roof covering: ceramic tiles, metal roofing tiles, trapezoidal sheets, seam sheets, etc.
It is worth investing in the Onninen installation wholesaler!
A highly qualified team of specialists will be happy to help you select components, as well as solve and explain any technical problems. We strongly encourage the cooperation of installers who want to expand their activities by installing PV installations. Onninen organizes comprehensive training in the field of installation and configuration of PV installations.