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As we know, the function of high-voltage fuse is to protect the circuit, that is, when the current in the circuit exceeds the specified value, the melt inside the fuse will generate a kind of heat to break the circuit. Therefore, for high-voltage fusing materials, the requirements are materials with ... Read More
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The fuse is a calibrated current carrying device. A typical fuse is composed of one or more melts surrounded by a filler (such as silica sand) as an arc extinguishing medium. For applications in different areas, the fuse styles and installation methods are different, but the fuse structures are ... Read More
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In response to the design requirements of the electric vehicle safety regulations on the over-current disconnecting device of the high-voltage system, in the EV high-voltage electrical architecture, the combination of fuse and contactor is generally used for coordinated protection to achieve over... Read More
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UL 248 and IEC 60127 are two major fuse standards for fuses. These two standards are mutually rejection and do not swap directly. Traditionally, UL 248 is a security standard for fuses used in North America. IEC 60127 is a security standard for fuses that are destined to use internationally. ... Read More
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At present, EV/HEV is composed of relatively expensive components (such as batteries, power electronic components, contactors, etc.). In order to protect these components from surges and failures, an important aspect of the power transmission system is to reasonably select fuses. With the continuous ... Read More
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The International Electricity Commission is the world's leading organization for international standards for all electrical, electronics and related technologies. The organization is an independent agency that consists of many standard technologies and national committees. However, they do not ... Read More
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UL and IEC are two major standard institutions that write control fuse standards. In addition, there are other standard agencies in the country /region and use IEC standards to have other specific state requirements, such as VDE, CCC, SEMKO, PSE. Read More
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Considering the reports and guidelines for the wire action at various temperatures, some people may think that the choice of fuse can be refined into accurate calculations. However, there are also differences in batch production of fuse products. Coupled with the measurement errors of some thermal ... Read More
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The fuse can be transmitted to the fuse or prevent the heat from the fuse from dissipating the heat, which will increase the local environmental temperature. Manufacturers may provide a proposed fuse seat working current to give a percentage of the nominal current. This is similar to the fuse rated ... Read More
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No. 1 Rated current iral Like ordinary fuses, it ensures that it can work normally at 100%rated current and does not melt. Usually test at a 40 -degree heat balancing state. When the rated current is 2 times, the fuse time is less than 1 minute. No. 2 Cells in Series The amount of this number is ... Read More
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