Fabrimex electrical components Germany Fabrimex model Fabrimex price

Fabrimex electrical components are energy conversion devices that convert DC electrical energy into AC electrical energy with a specific frequency; the circuit they form is called an oscillating circuit. An oscillator is simply a frequency source, generally used in phase-locked loops. In detail, it is a device that can convert DC electrical energy into AC electrical energy on its own without external signal excitation. It is generally divided into two types: positive feedback and negative resistance. The term "oscillation" implies AC; an oscillator includes the process and function of transitioning from non-oscillating to oscillating. Such a device capable of converting DC electrical energy to AC electrical energy is called an "oscillator." Oscillators are mainly divided into two types: harmonic oscillators and relaxation oscillators. They are electronic components used to generate repetitive electronic signals (usually sine waves or square waves). The circuit they form is called an oscillating circuit. It is an electronic circuit or device that can convert DC power into AC signal output with a specific frequency. There are many types; classified by oscillation excitation method, they include self-excited oscillators and externally excited oscillators; classified by circuit structure, they include RC oscillators, LC oscillators, crystal oscillators, tuning fork oscillators, etc.; classified by output waveform, they include sine wave, square wave, and sawtooth wave oscillators. They are widely used in the electronics industry, medical field, scientific research, and other areas.

Fabrimex electrical component principle

When current flows through a conductor, the conductor heats up due to its inherent resistance. The heat generation follows this formula: Q=I2RT; where Q is the heat generated, 0.28 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 fixed (if its temperature coefficient of resistance is not considered). When current flows through it, it generates heat, and the 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. If the rate of heat generation exceeds the rate of heat dissipation, more and more heat will accumulate. Due to its specific heat capacity and mass, this 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 understand that when designing and manufacturing fuses, you must carefully study the physical properties of the selected materials and ensure consistent geometric dimensions, as these factors play a crucial role in the normal operation of the fuse. Similarly, when using it, you must install it correctly.

Fabrimex electrical component features

A solid-state relay is a contactless electronic switch with isolation functionality. There are no mechanical contact parts during switching. Therefore, in addition to having the same functions as electromagnetic relays, solid-state relays offer logic circuit compatibility, vibration and mechanical shock resistance, unrestricted installation positions, good moisture, mold, and corrosion resistance, and excellent performance in explosion-proofing and preventing ozone pollution. They feature low input power, high sensitivity, low control power, good electromagnetic compatibility, low noise, and high operating frequency. Solid-state relays have no internal mechanical parts and use a potting fully sealed structure, offering advantages such as vibration resistance, corrosion resistance, long life, and high reliability. AC solid-state relays use zero-crossing triggering technology, resulting in short switching times, making them suitable for higher frequency applications. Optical isolation is used between the input and output circuits, resulting in very low input power consumption. The output end has a protection circuit and strong load capacity.

Fabrimex electrical component characteristics

The main characteristics of circuit breakers include: rated voltage; rated current; tripping current setting range for overload and short-circuit protection; rated short-circuit breaking current, etc. Rated ultimate short-circuit breaking capacity refers to the ability of a low-voltage circuit breaker to operate normally after breaking the maximum three-phase short-circuit current at its output terminals, and to break this short-circuit current once more; the breaker does not guarantee normal closing and breaking thereafter. Rated service short-circuit breaking capacity refers to the ability of the circuit breaker to break normally multiple times when the maximum three-phase short-circuit current occurs at its output terminals. The rated service short-circuit breaking capacity is a breaking current value lower than the rated ultimate short-circuit breaking current. Generally, circuit breakers with three-stage protection functions (long-time delay for overload, short-time delay for short-circuit, and instantaneous trip for short-circuit) can achieve selective protection. Most main lines (including transformer output terminals) use them as main protection switches. Circuit breakers without short-time delay for short-circuit (only having long-time delay for overload and instantaneous trip for short-circuit) cannot provide selective protection and can only be used on branch circuits. "Marine Electrical Engineering" points out that for circuit breakers with three-stage protection, emphasis is placed on their rated service short-circuit breaking capacity value, while for circuit breakers used on branch lines, it is essential to ensure they have sufficient rated ultimate short-circuit breaking capacity values. A common bias is to prefer larger values rather than appropriately sized ones, believing that larger is safer. However, choosing excessively large values causes unnecessary waste. Therefore, there is no need to blindly pursue high rated service short-circuit breaking capacity indicators for branch circuit breakers. For circuit breakers used on main lines, they must meet not only the requirements for rated ultimate short-circuit breaking capacity but also those for rated service short-circuit breaking capacity. A circuit breaker is a basic low-voltage electrical appliance with overload, short-circuit, and undervoltage protection functions, capable of protecting lines and power sources. The main technical indicators are rated voltage and rated current. Circuit breakers have different functions depending on the application, with many varieties and specifications, and numerous specific technical indicators. Free tripping of circuit breakers: If the protective action closes the tripping circuit at any moment during the closing process of the circuit breaker, the circuit breaker can reliably open completely; this is called free tripping. Circuit breakers with free tripping ensure that if a short-circuit fault occurs during closing, they can disconnect quickly, avoiding the expansion of the accident scope.

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