The function of intelligent DC combiner boxes

In the solar photovoltaic power generation system, in order to reduce the connection between the solar photovoltaic cell array and the inverter, users can connect a certain number of photovoltaic cells with the same specifications in series to form photovoltaic strings, and then connect several photovoltaic strings in parallel to the smart photovoltaic combiner box. After converging in the smart photovoltaic combiner box, they are output through a DC circuit breaker and used in conjunction with the photovoltaic inverter to form a complete photovoltaic power generation system, achieving grid connection with the mains. In order to improve the reliability and practicality of the system, photovoltaic dedicated DC lightning protection modules, DC Fuses, circuit breakers, etc. can be configured in the intelligent photovoltaic combiner box, and working status indicator lights, lightning counters, etc. can be set up to facilitate users to timely and accurately grasp the working status of photovoltaic cells, ensuring that the solar photovoltaic power generation system can achieve maximum efficiency.

For large-scale photovoltaic grid connected power generation systems, in order to reduce the connection lines between photovoltaic modules and inverters, facilitate maintenance, and improve reliability, it is generally necessary to add DC combiner devices between photovoltaic modules and inverters. By using a photovoltaic combiner box, users can connect a certain number of photovoltaic modules with the same specifications in series to form one photovoltaic module string according to the DC voltage range input by the inverter. Then, several strings can be connected to the photovoltaic array lightning protection combiner box and output through lightning arresters and circuit breakers, which facilitates the connection of the subsequent inverter.