Solar junction box - an important component in photovoltaic systems
As a connector of solar cell module, the main function of photovoltaic junction box is to export the electric energy generated by solar cell module through cable. Due to the particularity of the use of solar cells and its own expensive value, the photovoltaic junction box must be specially designed to meet the requirements of solar cell modules. Solar junction box is a very important component in solar photovoltaic system, which is mainly responsible for the following aspects:
1. Realize photovoltaic module series and parallel connection
The terminal block or MC4 connector is built into the junction box, which can easily connect multiple PV modules in series to form a higher voltage PV array.
Parallel connection can also be carried out to increase the total power generation of the photovoltaic array.
The flexible series and parallel design is conducive to power optimization and component deployment according to the actual needs of the power station.
2. Provide over current and over voltage protection
The junction box is integrated with overload protection fuse, surge protector, etc., which can effectively prevent over-current and over-voltage caused by short circuit, lightning strike and other reasons.
When the PV module fails, the protection circuit will cut off the circuit in time to avoid further damage to the module.
The reliable protection function ensures the safe and stable operation of the photovoltaic system.
3. Achieve electrical isolation
The junction box uses a housing made of insulating material to isolate the PV module from the external AC grid.
Effectively prevent leakage and electric shock accident, enhance the safety of the system.
At the same time, it is also conducive to the grounding and lightning protection of photovoltaic systems.
4. Meet the requirements of harsh environment
The enclosure of the junction box is designed to meet IP65 or higher protection standards.
It can effectively prevent dust, moisture and corrosive gas from entering and ensure long-term reliable operation.
Excellent weather resistance and waterproof performance, suitable for outdoor high temperature, high humidity, strong wind and rain and other harsh environment.
5. Easy cable connection
The junction box is equipped with special cable input and output ports to facilitate the laying and connection of photovoltaic cables.
Terminal block or MC4 connector design makes cable connection faster and simpler.
It is conducive to realizing flexible layout and capacity expansion of photovoltaic array.
6. Provide monitoring interface
Some advanced junction boxes can integrate monitoring modules to collect key parameters such as voltage and current of photovoltaic modules in real time.
Data transmission to the monitoring center through wireless or wired communication is conducive to remote monitoring and operation and maintenance management of photovoltaic power stations.
The function of fault warning and location can greatly improve the operation reliability of power station.
You can also contact us directly in the following ways: visit, telephone, email
telephone
Contact US