Abstract: To ensure the safety and reliability of the charging pile, it is necessary to over-current and over-voltage protection of its charging/communication port.
This article gives you a high-breaking current, high I2T fuse, so that the charging pile is away from bursting and false triggering accidents.
The function of the charging pile is similar to that of the fueling station inside the gas station. It can be fixed on the ground or wall, installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and in residential parking lots or charging stations. It can be based on different voltages. The level is charged for various types of electric vehicles. The input of the charging post is directly connected to the AC grid. The output has AC and DC points, and both are equipped with charging plugs to charge the electric car.
Figure 1: AC charging pile topology
The design of the charging post must take into account the safety and reliability, so the overcurrent and overvoltage protection must be used on the input, output and communication interfaces with safe and reliable protection devices. Here we recommend a fuse from Shiqiang, which is the industry leader Littelfuse's large voltage high current fuse 0504030.MXEP. This model is an ideal circuit protection solution for the AC input of charging piles. It has been widely used in the field of charging piles.
Shiqiang 0504030.MXEP is a 420VDC, 500VAC ceramic fuse with a rated current of 30A. It has a large rated breaking current and is available in a compact 6.3 x 32mm package. It combines high current, high reliability and small size. Its rated breaking current is up to 400A@420VDC, 1500A@250VAC, 200A@500VAC. The higher breaking current means that the fuse is less prone to burst under extreme conditions, so it is safer to use. Not only that, the I2T value of this model is as high as 2600A2s, and the higher I2T value means that the fuse is less prone to false triggering when the system is normal, so it is more reliable.
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