BK/S501-V-3.15R

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Fuses

A fuse is an important protection component in the power system. The application field and working principle of BK/S501-V-3.15R are discussed in this article.

Overview of Fuses

A fuse is a safety device designed to protect the power system from overcurrent and overvoltage, short-circuit and other fault currents. It is composed of two metal blocks of different materials welded near the contact line or other load-bearing components. A fuse element is located in the middle of the two blocks, when a large fault current passes through the fuse element, it will heat up quickly to make it melt and cut off the current. Under normal load conditions, the fuse element allows a small amount of current to pass through. When a large fault current occurs, the heat generated by it makes the fuse element meltdown and thus interrupt the current flow.

Application Field of BK/S501-V-3.15R

The BK/S501-V-3.15R is a type of fuse, its application field is mainly used for 9-12kV power systems, it is used for power distribution in places where medium short-circuit protection is required in terminal distribution boxes, electric locomotives, substations, industrial and mining enterprises, and other civil units. It is also widely used in ships and offshore platforms, tunnels, railway engines, mining equipment, etc.

Working Principle of BK/S501-V-3.15R

The working principle of BK/S501-V-3.15R is to protect the power system from overvoltage and overcurrent, short-circuit and other fault currents. Its internal structure consists of an upper part and a lower part. The upper part consists of a fuse core and a fuse shell. The lower part includes a fuse box, a breaking core, and a supporting body. The fuse core is made up of metal wires with high melting point, which can bear a certain degree of current. When the load current passes through the fuse core, its temperature has the same tendency as the current but the degree smaller. When the current reaches a certain maximum, the temperature of the fuse core can reach the melting point and becomes a semi-molten state. When the current reaches a catastrophic value, it will form a short circuit state and make the fuse core instantaneously vaporize. This will cut off the current over the safe limit quickly and protect the electric circuit.

Advantages of BK/S501-V-3.15R

The BK/S501-V-3.15R has the following advantages:

• Low power consumption;
• High breaking capacity;
• Good insulation performance;
• High structural strength;
• Excellent on-load switching performance;
• High short-circuit current breaking ability;
• Stable trip characteristics.

In short, the BK/S501-V-3.15R fuse is a reliable and efficient protective device that can provide reliable protection for the power system.

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