For a huge photovoltaic power station, the amount of the combiner box only accounts for 1%, but 100% of the current passes through it, and the failure of the combiner box during commissioning, operation and maintenance accounts for 20 to 30% of the entire power station. In addition, Iunsafe combiner boxes are likely to affect the power generation and even cause fires, threatening property and life. This shows how important the combiner box is. In a huge photovoltaic power generation system, photovoltaic combiner box is an indispensable component. So, what is the role of the combiner box in the photovoltaic power generation system?
01
What is solar comebiner box?
In the PV system, the photovoltaic combiner box is a wiring device that ensures the orderly connection of photovoltaic modules and the confluence function. It means that the user can connect a certain number of photovoltaic cells with the same specifications in series to form a photovoltaic series, and then connect several photovoltaic cells in series. The photovoltaic series and parallel are connected to the photovoltaic combiner box. After the combiner box is combined, the controller, DC power distribution cabinet, photovoltaic inverter, and AC power distribution cabinet are used together to form a complete photovoltaic power generation system and connected to the grid.Combine the output currents of multiple inverters, while protecting the inverters from harm from the AC grid-connected side/load, as the output disconnection point of the inverters, improving the safety of the system and protecting the safety of installation and maintenance personnel.
02
Why get a combiner box?
The combiner box is a device that collects current. It is mainly used in large and medium-sized photovoltaic systems. The number of component strings in the photovoltaic array is large and the output is large. A device must be needed to collect these outputs so that they can be directly connected to the inverter. In the PV system, the combiner box is a wiring device that ensures the orderly connection of photovoltaic modules and the function of combining. The device can ensure that the photovoltaic system is easy to cut off the circuit during maintenance and inspection, and reduce the area of power outage when the photovoltaic system fails. Therefore, The quality of the combiner box is the most important consideration when choosing, especially since it is the first piece of equipment connected to the output of the solar module.
03
Where should a combiner box be mounted?
Ideally, you want your solar combiner box to be mounted on a shaded north facing wall. This helps limit the amount of direct sunlight it gets. As you can imagine, prolonged sun exposure will increase the temperature of the internal combiner. This reduces the effectiveness and longevity of the components in the box. It should also be noted that size does matter. A larger enclosure allows for greater air volume and surface area. This is handy when cooling internal components. Additionally, the larger enclosure makes field wiring easier by allowing more work space during installation and maintenance.
For more information on solar combiner box, please feel free to call Slocable at 86-769-22010201. You can also email us at pv@slocable.com.cn.
