Circuit Breakers in PV Systems
What is the DC miniature circuit breaker (MCB)
The functions of DC MCB and AC MCB are the same. They both protect electrical appliances and other load equipment from overload and short-circuit problems, and protect the circuit safety. but the usage scenarios of AC MCB and DC MCB are different.
The difference between AC MCB and DC MCB by only physical parameters, the AC MCB has labels of the terminals as LOAD and LINE terminals whereas the DC MCB will have positive (+) or negative (-) sign on its terminal.
How to connect DC MCB correctly?
In case of overload or short circuit, the MCB will not be able to cut the current and put out the arc, this may lead to the breaker burning out.
Therefore, DC MCB has a marking of and symbols, still need to mark the circuit direction and wiring diagrams
What is solar power system？
The solar power system, also photovoltaic (PV) system, It is a kind of energy convert sunlight into electricity for human daily use, it consists of one or more solar panels and inverters and other electrical devices and mechanical hardware that uses solar power output from direct current to alternating current to generate electricity.
The electricity generated by solar panels is in the form of direct current (DC). We can store part of the solar energy through batteries,Through solar DC distribution boxes, power can be distributed to some Electronic equipment that directly uses direct current. in order to make solar power for our daily use, we need to use an inverter to convert it from direct current to alternating current. The AC power from the inverter can then be used to power local electrical equipment or sent to the grid for use elsewhere.
