Classification of PV combiner boxes

The PV combiner box often means to the combiner box. The PV combiner box is a photovo0ltaic module that guarantees the orderly connection and confluence function of photovoltaic modules in the photovoltaic power generation system. In this article, I will introduce the PV combiner box to a certain extent, and I hope it will be helpful to you.

Key feature:

• Water proof IP65, suitable for outdoor installation

• High voltage fuse, over voltage and over current protection

• Lighting protection

• Multiple photovoltaic array input,reduce the connection between the solar PV array and the inverter, save the cost of cable

• High PV input up to 1000VDC per string

• Prevent the current back to panel, protect the battery in good stock.

• Classification of PV combiner boxes.

• Precautions for choosing PV combiner box.

• All of PV combiner box products in company

Classification of PV combiner boxes.

PV combiner boxes are divided into three types in terms of function. The first type is the basic type without anti-reverse and monitoring functions; the second type has anti-reverse functions without monitoring functions; the third type has both anti-reverse functions and monitoring functions. This monitoring function is currently the most complete and cost-effective photovoltaic combiner box

●PV combiner boxes have 4, 8, 12, and 16 standard specifications and models, which can be connected to 4, 12, and 16 solar cell strings, as well as photovoltaic combiners with monitoring and lightning protection.

Domestic photovoltaic power stations usually adopt a two-level confluence method: the photovoltaic strings pass through the primary confluence of the PV combiner box, and then converge to the DC power distribution cabinet (or the DC side of the inverter).

Different projects have different options for the number of circuits of PV combiner boxes, and the mainstream design of large-scale photovoltaic power station arrays chooses 16-circuit PV combiner boxes. It is recommended to use 8-loop PV combiner boxes for large grid-connected photovoltaic power stations under complex terrain conditions; more loop PV combiner boxes can be selected under the terrain conditions where the photovoltaic array does not significantly increase the land occupation.

Precautions for choosing PV combiner box.

1.  Caculate the string current of each battery string. The string current of each string must be less than the input current of each PV combiner box.

2. The input voltage of the PV combiner box must be greater than the battery string and parallel voltage.

3. The number of PV input channels in the PV combiner box should be the same as the actual number of channels, and it is not possible to choose too few or too many channels. For example, 8 inputs are required, but 16 channels are selected, which greatly wastes functions and increases investment costs.

4. PV combiner boxes should follow the principle of lowest investment cost without affecting the power generation, and unnecessary complicated functions.

All of PV combiner box products in company

Foshan SNAT Energy Electric Technology Co., Ltd. was established in 2004. It uses solar energy as the main energy source and adopts high-efficiency fifth IGBT technology. It has low operating costs, one-time investment, and long-term benefits. The company's main products are: solar generators, solar inverters, solar charge controllers and PV combiner boxes. For example, the PV combiner box includes the photovoltaic array combiner box.

If you are interested in our company's PV combiner box, you can get in touch with us to communicate, we will provide you with the best PV combiner box products and services. I wish you success in your work and good health.