CEG Electric electrical components German CEG Electric models CEG Electric prices

CEG Electric electrical components are switches controlled by electromagnets, that is, a combination of an electromagnet and a switch. When the electromagnet coil is energized, it generates electromagnetic attraction, causing the movable iron core to push or pull the switch contacts to close, thereby connecting the controlled circuit. Electromagnetic switches are widely used in various industries, most commonly as contactors in the industrial sector. An electromagnetic switch is the control switch on a starter motor and is one of the three main components of a starter motor (DC motor, transmission engagement mechanism, electromagnetic switch). Its working principle is that the coil generates electromagnetic attraction when energized, causing the movable iron core to move. This movement, on one hand, pulls the transmission engagement mechanism to advance the starter pinion gear to engage with the engine flywheel ring gear, and on the other hand, pushes the switch contacts to connect, allowing the DC motor to be energized and operate, thereby driving the engine to start.

CEG Electric 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 interrupting the maximum three-phase short-circuit current at its output terminals; however, the circuit breaker does not guarantee whether it can normally connect and disconnect thereafter. The rated service short-circuit breaking capacity refers to the ability of the circuit breaker to normally break 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 speaking, circuit breakers with three-stage protection functions—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 (having only two-stage protection: long-time delay for overload and instantaneous action 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 service short-circuit breaking capacity value, while for circuit breakers used on branch lines, it is essential to ensure they have sufficient ultimate short-circuit breaking capacity values. A common bias is to prefer larger values rather than appropriately matched ones, under the assumption that larger is safer. However, selecting excessively large values leads to unnecessary waste. Therefore, there is no need to blindly pursue high service short-circuit breaking capacity indicators for circuit breakers on branch lines. For circuit breakers used on main lines, they must not only meet the requirements for rated ultimate short-circuit breaking capacity but also satisfy the requirements 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 circuits 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 a circuit breaker: If the protective 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 rapid disconnection when a short-circuit fault occurs during closing, thereby preventing the expansion of the accident scope.

CEG Electric electrical component principles

The main principle of a diode is to utilize the unidirectional conductivity of the PN junction. Adding leads and encapsulation to the PN junction forms a diode. A crystal diode consists of a PN junction formed by P-type semiconductor and N-type semiconductor. A space charge layer is formed on both sides of the interface, establishing a built-in electric field. When no external voltage is applied, the diffusion current caused by the carrier concentration difference across the PN junction equals the drift current caused by the built-in electric field, resulting in an electrical equilibrium state. When a forward voltage bias is applied externally, the mutual cancellation effect between the external electric field and the built-in electric field increases the diffusion current of carriers, causing a forward current. When a reverse voltage bias is applied externally, the external electric field and the built-in electric field are further strengthened, forming a reverse saturation current within a certain reverse voltage range that is independent of the reverse bias voltage value. When the applied reverse voltage reaches a certain level, the electric field intensity in the space charge layer of the PN junction reaches a critical value, triggering a carrier multiplication process that generates a large number of electron-hole pairs, resulting in a significant reverse breakdown current, known as the diode breakdown phenomenon. Reverse breakdown of the PN junction is categorized into Zener breakdown and avalanche breakdown.

CEG Electric electrical component functions

When the distance between the observer or system and the wave source changes, the frequency of the approaching waves shifts; this phenomenon is known as the Doppler effect. Sonar and radar are developed based on the principle of this effect. The Doppler effect can be utilized to manufacture ultrasonic proximity switches, microwave proximity switches, etc. When an object approaches, the reflected signal received by the proximity switch undergoes a Doppler frequency shift, allowing the identification of whether an object is approaching. Proximity switches are widely used in aviation, aerospace technology, and industrial production. In daily life, they are applied in automatic doors in hotels, restaurants, and garages, as well as in automatic hot air blowers. For security and anti-theft purposes, important locations such as archives, accounting departments, financial institutions, museums, and vaults are typically equipped with anti-theft devices composed of various proximity switches. In measurement technology, such as for length and position measurements, and in control technology, such as for the measurement and control of displacement, speed, and acceleration, a large number of proximity switches are also used.

Weidou Intelligent Technology specializes in selling German CEG Electric connectors, CEG Electric switches, CEG Electric relays, CEG Electric controllers, CEG Electric plugs, CEG Electric sensors, CEG Electric resistors, CEG Electric capacitors, CEG Electric buses, CEG Electric modules, CEG Electric cables, CEG Electric power supplies, CEG Electric interfaces, CEG Electric gateways, CEG Electric circuit breakers. CEG Electric products are original imports from Germany. Customers are welcome to inquire and place orders.