Haug electrical components Germany Haug model Haug price

Haug electrical components refer to an electrical device that disconnects the circuit by melting the fusible element with the heat generated by itself when the current exceeds the specified value. A fuse is a current protection device made based on the principle that when the current exceeds the specified value for a period of time, the heat generated by itself melts the fusible 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, and are one of the most commonly used protective devices. A metal conductor is used as the fusible element connected in series in the circuit. When overload or short-circuit current passes through the fusible element, it melts due to its own heating, thereby disconnecting 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.

Haug electrical component characteristics

The main characteristics of circuit breakers include: rated voltage; rated current; tripping current setting range for overload protection and short-circuit protection; rated short-circuit breaking current, etc. The rated ultimate short-circuit breaking capacity refers to the ability of a low-voltage circuit breaker to operate normally again and break this short-circuit current once more after breaking the maximum three-phase short-circuit current at the output terminal of the circuit breaker. The circuit breaker does not guarantee whether it can normally connect and break thereafter; while the 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 terminal. The rated service short-circuit breaking capacity is a breaking current value smaller than the rated ultimate short-circuit breaking current. Generally speaking, circuit breakers with three-stage protection functions of long-time delay for overload, short-time delay for short-circuit, and instantaneous action for short-circuit can achieve selective protection. Most main lines (including the output terminals of transformers) use them as main protection switches. Circuit breakers without short-time delay for short-circuit function (only having two-stage protection of long-time delay for overload and instantaneous action for short-circuit) cannot provide selective protection and can only be used in branch circuits. "Marine Electrical Engineering" points out that circuit breakers with three-stage protection focus on their rated service short-circuit breaking capacity value, while circuit breakers used in branch lines should ensure sufficient rated ultimate short-circuit breaking capacity value. A common bias is to prefer larger values rather than appropriately suitable ones, believing that larger is safer. However, choosing excessively large values will cause unnecessary waste. Therefore, there is no need for circuit breakers on branch lines to blindly pursue their rated service short-circuit breaking capacity indicators. For circuit breakers used on main lines, they must not only meet the requirements of rated ultimate short-circuit breaking capacity but also meet the requirements of rated service short-circuit breaking capacity. A circuit breaker is a basic low-voltage electrical appliance. It has overload, short-circuit, and undervoltage protection functions, and has the ability to protect 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 many specific technical indicators. Free tripping of circuit breakers: If the protection action connects the tripping circuit at any moment during the closing process of the circuit breaker, the circuit breaker can reliably disconnect completely. This is called free tripping. Circuit breakers with free tripping can ensure that they can quickly disconnect when a short-circuit fault occurs during closing, thereby avoiding the expansion of the accident scope.

Haug electrical component principle

When two conductors of different compositions (called thermocouple wires or thermoelectrodes) are joined at both ends to form a loop, an electromotive force is generated in the loop when the temperatures of the two junctions are different. This phenomenon is called the thermoelectric effect, and this electromotive force is called thermoelectric potential. Thermocouples use this principle for temperature measurement. The end directly used to measure the temperature of the medium is called the working end (also called the measuring end), and the other end is called the cold end (also called the compensation end); the cold end is connected to a display instrument or supporting instrument, which indicates the thermoelectric potential generated by the thermocouple. A thermocouple is actually an energy converter that converts thermal energy into electrical energy and uses the generated thermoelectric potential to measure temperature. Regarding the thermoelectric potential of thermocouples, attention should be paid to the following issues: 1, the thermoelectric potential of a thermocouple is the difference between the temperature functions at the two ends of the working end of the thermocouple, not a function of the temperature difference between the cold end and the working end of the thermocouple; 2, the magnitude of the thermoelectric potential generated by a thermocouple, when the thermocouple material is uniform, is independent of the length and diameter of the thermocouple, and depends only on the composition of the thermocouple material and the temperature difference between the two ends; 3, when the material composition of the two thermocouple wires is determined, the magnitude of the thermocouple's thermoelectric potential depends only on the temperature difference of the thermocouple; if the temperature of the cold end of the thermocouple is kept constant, the thermoelectric potential of the thermocouple is then a single-valued function of the working end temperature. Two conductors or semiconductors of different materials, A and B, are welded together to form a closed loop, as shown in the figure. When there is a temperature difference between the two junction points 1 and 10 of conductors A and B, an electromotive force is generated between them, thus forming a current of a certain magnitude in the loop. Thermocouples work by utilizing this effect.

Haug electrical component applications

The structure and characteristics of Schottky diodes make them suitable for high-frequency rectification in low-voltage, high-current output applications, for detection and mixing at very high frequencies (such as X band, C band, S band, and Ku band), and for clamping in high-speed logic circuits. In addition to the characteristic parameters of ordinary PN junction diodes, the electrical parameters of Schottky diodes used for detection and mixing also include intermediate frequency impedance, voltage standing wave ratio, and noise figure, among others. Schottky barrier diodes are a type of low-power, ultra-high-speed semiconductor device. The most significant feature is the extremely short reverse recovery time (which can be as small as a few nanoseconds). They are mostly used as high-frequency, low-voltage, high-current rectifier diodes, freewheeling diodes, and protection diodes. They are also used as rectifier diodes and small-signal detection diodes in circuits such as microwave communications. They are relatively common in communication power supplies, variable frequency drives, etc. A typical application is in the switching circuit of a bipolar junction transistor BJT, where a Shockley diode is connected to BJT for clamping, so that the transistor is actually close to the cutoff state when in the conduction state, thereby improving the switching speed of the transistor. The biggest feature of Schottky diodes is the relatively small forward voltage drop. Under the same current conditions, its forward voltage drop is much smaller. In addition, its recovery time is short. It also has some disadvantages: relatively low withstand voltage and slightly larger leakage current. Comprehensive consideration is required when selecting.

Weidou Intelligent Technology professionally sells German Haug connectors, Haug switches, Haug relays, Haug controllers, Haug plugs, Haug sensors, Haug resistors, Haug capacitors, Haug buses, Haug modules, Haug cables, Haug power supplies, Haug interfaces, Haug gateways, Haug circuit breakers, Haug original imports from Germany. Welcome customers to inquire and order.