What is the purpose of the field switchboard in photovoltaic systems?
You need to choose the field switchboard for your PV system, and you know that this choice plays a key role in the operation of the whole system, so you need to know what it is for.
If we can give you any advice, we say take advantage of all the experience and expertise of Secsun’s technicians.
You can ask them any questions you are asking, such as:
– What is the purpose of the field switchboard in photovoltaic systems?
– What kind of electrical cables should I use to connect the PV modules to the electrical protection panels?
– What is the function of string frameworks?
– How do you connect a PV system to the grid?
– How much do photovoltaic field switchboards cost?
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In this article you will find important information to know about this particular type of Quadri.
The field switchboard serves for the optimal operation of the photovoltaic system in complete safety.
In fact, in the design and construction stages of field switchboards, the needs of management and those of the safety of photovoltaic systems must be taken into account.
In addition, it is important to the manufacturer that the switchboards be versatile, so that the installer can make the best use of them according to actual needs.
Based on these considerations, the existing types of switchboards are divided on the basis of the strings of panels into which the entire PV array is divided. The term string represents the set of panels connected in series. Thus the field may consist of one or multiple strings, which may operate independently or in parallel.
String switchboards must include the necessary components for string protection, such as:
– Two-pole fuse holders complete with fuses of appropriate rating and rated operating voltage;
– Under-load disconnect switches of suitable rating and rated voltage. Disconnect switches can also be equipped with minimum voltage or throw-away trip coils;
– Surge arresters complying and with the reference standard CEI EN 61439 specifically for photovoltaic systems;
The choice of electrical protections to be used is of paramount importance for the total safe operation of the entire system in both direct and alternating current.
Protection, both toward the PV panel string side and the inverter side, is achieved by choosing disconnectors, automatic magneto-thermal/differential circuit breakers, surge arresters, and grounding bars that ensure maximum safety and optimal management of the entire system.
The enclosure must also be robust and comply with safety regulations. Therefore, it must be made of thermoplastic material of adequate insulation class and with an IP rating of resistance to penetration by solids and water that is equally adequate for outdoor use.
Indicator plates and wire and terminal numbering system, terminal blocks, and any other indications for proper assembly complete the features of the switchboard for the PV array.
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Secsun has a range of field switchboards already wired and ready for use, accompanied by CE declaration of conformity and covered by warranty for manufacturing defects.
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