WERMA electrical components Germany WERMA model WERMA price

WERMA electrical components refer to an electrical device that disconnects the circuit by melting the fuse element with the heat generated by itself when the current exceeds a specified value. A fuse is a current protection device made based on the principle that after the current exceeds the specified value for a period of time, the heat generated by itself melts the fuse element, thereby disconnecting the circuit. Fuses are widely used in high and low voltage distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, making them one of the most commonly used protective devices. It is an electrical device that uses a metal conductor as the fuse element connected in series in the circuit. When overload or short-circuit current passes through the fuse element, it melts due to its own heating, thereby breaking the circuit. The fuse has a simple structure and is easy to use. It is widely used in power systems, various electrical equipment, and household appliances as a protective device.

WERMA electrical component features

Among various switches, there is a component with the ability to "sense" objects approaching it—the displacement sensor. Utilizing the sensitivity of the displacement sensor to approaching objects achieves the purpose of controlling the switch on or off; this is a proximity switch. Only when an object moves toward the proximity switch and approaches within a certain distance does the displacement sensor "sense" it, causing the switch to actuate. This distance is usually called the "detection distance." Different proximity switches have different detection distances. Sometimes the detected objects move toward the proximity switch one by one at certain time intervals and leave one by one, repeating continuously. Different proximity switches have different response capabilities to the detection objects. This response characteristic is called the "response frequency."

WERMA electrical component principle

When current flows through a conductor, the conductor will generate heat because the conductor has a certain resistance. The amount of heat generated follows this formula: Q=I2RT; where Q is the heat generated, 0.24 is a constant, I is the current flowing through the conductor, R is the resistance of the conductor, and T is the time the current flows through the conductor; from this formula, we can clearly see the simple working principle of a fuse. When the material and shape of the fuse are determined, its resistance R is relatively determined (if its temperature coefficient of resistance is not considered). When current flows through it, it generates heat, and the amount of heat increases with time. The magnitude of the current and resistance determines the rate of heat generation, while the construction of the fuse and its installation conditions determine the rate of heat dissipation. If the rate of heat generation is less than the rate of heat dissipation, the fuse will not blow. If the rate of heat generation equals the rate of heat dissipation, it will not blow for a considerable period of time. If the rate of heat generation is greater than the rate of heat dissipation, more and more heat will be generated. Because it has a certain specific heat and mass, the increase in heat manifests as a rise in temperature. When the temperature rises above the melting point of the fuse, the fuse blows. This is the working principle of a fuse. From this principle, we should know that you must carefully study the physical properties of the selected materials when designing and manufacturing fuses, and ensure they have consistent geometric dimensions. Because these factors play a crucial role in whether the fuse can work properly. Similarly, when using it, you must install it correctly.

WERMA electrical component principle

The diesel engine drives the generator to operate, converting the energy of diesel into electrical energy. Inside the diesel engine cylinder, clean air filtered by the air filter mixes fully with high-pressure atomized diesel injected by the fuel injector. Under the compression of the upward-moving piston, the volume decreases, and the temperature rises rapidly, reaching the ignition point of diesel. The diesel is ignited, the mixed gas burns violently, the volume expands rapidly, pushing the piston downward, which is called "work." The gasoline engine drives the generator to operate, converting the energy of gasoline into electrical energy. Inside the gasoline engine cylinder, the mixed gas burns violently, the volume expands rapidly, pushing the piston downward to perform work. Whether it is a diesel generator or a gasoline generator, each cylinder performs work sequentially in a certain order. The thrust acting on the piston is converted into force to rotate the crankshaft through the connecting rod, thereby driving the crankshaft to rotate. By installing a brushless synchronous AC generator coaxially with the power machine crankshaft, the rotation of the power machine can drive the rotor of the generator. Using the principle of 'electromagnetic induction,' the generator outputs induced electromotive force, generating current through a closed load circuit.

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