Electrical Installations

There are two basic models of photovoltaic electrical installations: network connected installations and isolated installations.

Onyx Solar © laminated photovoltaic glass can be used indiscriminately in any type of installation, offering greater advantages than the traditional silicon glass modules.

Below is a brief description of each type of photovoltaic electrical installation:

Network connected installation:

Refers to those which interconnect with the conventional electrical network to permit the sale of energy produced by the photovoltaic installation.

The majority of buildings are connected to the conventional line. Subsequently it proves more interesting to sell the energy produced by the installation, and benefit from the price of the bonded kW, and consume cheaper energy at the conventional market price.

The installation of the components necessary for a correct functioning of an electric installation presents few complications and maintenance of said components is minimal.  Distance monitoring of the installation is possible. The production and performance levels data can also be accessed via any computer which has an internet connection.

The components of a photovoltaic electrical installation with a network connection are as follows:

Photovoltaic glass: receives solar radiation and generate electrical energy.  These are interconnected, forming series, and, depending upon the number and specific technical characteristics of the inverter, they make up a circuit which produces a direct current.

Inverters: these transform the direct current produced by the photovoltaic glass into an alternating current, similar to that which circulates on the conventional web, allowing for the interconnection of both networks.

Protection box:  guarantees the safety and the isolation of the installation by thermal and regulative protection elements.

Energy metres:  usually bidirectional, registering both the consumed and the produced energy.

Wires: these are adjusted with reference to the power and the number of photovoltaic glass modules installed.

Isolated installations:

In this type of installations, the produced energy is used for personal consumption.

The building in which this type of connection is typically found are those which are located at a great distance from the convention network connection,  which complicates to a large degree the possibility of a network connection.

The dimensions are relative to the amount of energy consumed by the receivers and also the functioning time of these receivers.

They are also used in automated installations such as direct solar watering systems, solar powered street lamps, bus stops, power sources for traffic lights, telephone and television aerials, etc.

The components for this type of installation are:

Photovoltaic glass: in this case, the number of modules must be sufficient to be able to charge the batteries of the installation.

Batteries: their dimensions are relative according to the number of receivers and the intended use of the installation.  The dimension will be overestimated based on a predicted week of low solar radiation.

Charge regulator: this regulates the amount of energy which the photovoltaic glass modules sent to the batteries and restricts the consumption of energy by the installation, protecting them from excessive discharges.

Inverter: this element is always necessary when the receivers operate using alternative current (240V). It also imposes a charge limit in order to protect the batteries.

For further information do not hesitate to contact us. Our team of engineers can offer solutions to any question regarding electrical installation and its components. To contact us click here.

 

Components available for the electrical photovoltaic installation:

>> Solar Inverter ISG 1 40.
>> Solar Inverter ISMG 1 60.
>> Digital Indicator DPY30.
>> Digital Indicator DPY40.

For information regarding other types of components click here.