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 install DC bus devices between photovoltaic modules and inverters. Due to the re-installation of lightning protection devices.
The main function of photovoltaic junction box is to collect the input of photovoltaic cell array in the first stage, which is used to reduce the connection between photovoltaic cell array and inverter, optimize the system structure, monitor the running state of photovoltaic panel, the current, voltage and power after confluence, the lightning arrester state, the DC circuit breaker state collection, the relay contact output and other functions.
Users are advised to observe the necessary safety regulations during installation and use. In order to ensure personal safety and reduce risks, users need to observe the safety measures mentioned in the manual. Photovoltaic junction box has the following characteristics:
(1) meets the requirements for outdoor installation and use;
(2) 16 solar cells can be connected at the same time, and the maximum current of each channel can reach10a; ;
(3) Equipped with special high-voltage lightning arrester for photovoltaic, and both positive and negative electrodes have lightning protection function;
(4) Adopting a four-pole circuit breaker with positive and negative poles respectively connected in series to improve the DC withstand voltage to not less than DC1000 V..