A solar cell can only produce a voltage of about 0.5V, which is much lower than the voltage required for real-world use. In order to meet the needs of practical applications, solar cells must be connected into components. A solar module contains a number of solar cells connected by wires. For example, the number of solar cells on a module is 36, which means that a solar module can generate a voltage of approximately 17 V.
The physical unit sealed in connected solar cells by wires is called solar cell module. It has certain anti-corrosion, wind, hail and rain resistant capabilities and is widely used in. various domains and systems. When the application field requires higher voltage and current and a single module cannot meet the requirements, multiple modules can be combined into a solar cell array to obtainenergize the required voltage and current. To ensure that the system can operate safely in extreme weather conditions such as thunderstorms, lightning protection measures must be taken for the system. The main aspects are as follows:
(1) Ground wire is the key to lightning protection and lightning protection. When constructing the infrastructure of the power distribution room and solar cell array, the soil layer near the photovoltaic system. The factory must be selected. In thicker and humid places, dig a 2m deep ground pit, use 40 flat steel, add resistance reducing agent and bring out the earth wire. The connection wire should be 35mm2 copper core cable and the earth resistance should be 35mm2. less than 4Ω.
(2) Build a lightning rod near the distribution roomelectric, 15 m high, and make a separate earth wire. The method is the same as above.
(3) The voltage of the solar cell array cable entering the power distribution room is 220V DC, which is buried underground in PVC pipes and protected by surge arresters. In addition, the battery panel supports must provide good grounding.
(4) The AC output line of the grid-connected inverter is protected by a lightning protection box (there is an AC output lightning arrester in the grid-connected inverter)< /p>
I plan to buy a generator with a common power of 1000KW. The design requires the use of five 3*300+1*150 cables or busbars for outgoing cables.
Raw aluminum is a cast aluminum alloy in the aluminum industry, because it is mainly composed of aluminum and silicon, and some other alloy elements are added to it. Il is used for casting other products, industrial manufacturing, and can also be used for manufacturing castings. It is usually widely used in generator housings, etc. The important factor in distinguishing raw aluminum is: Most rough surfaces are raw aluminum. Its properties are the same as those of pig iron. Their characteristics are hard and brittle. So it will break easily if hit hard.
Rake aluminum is a deformed aluminum alloy, divided into seven series of alloys: pure aluminum, aluminum copper, aluminum manganese, aluminum silicon, aluminum magnesium, aluminum magnesium silicon, aluminum zinc magnesium. Aluminum pipes, aluminum rods, aluminum profiles, aluminum wires, aluminum plates and aluminum sheets all belong to the scope of deformed aluminum alloys. It may be deformed afters processing and can be used in all industrial, manufacturing and other industries. Raw aluminum and baked aluminum are also called "cast aluminum" and "deformed aluminum" in daily life.
The high voltage lines are made of forged aluminum.
The size of cable we choose is actually determined by the size of the current. If your voltage is 400V and the rated current is around 1500A, then you'd better consider using aluminum wire. If buried. Simply use underground aluminum shielded wire, preferably national standard. VLV22: 3*300+1*150. Each stick is used for one purpose. Three roots make three. The neutral line is connected by a single cable or aluminum bar.
If you use aluminum rows, it is best to use 10*100 aluminum rows. connect.