EA Elektro Automatik electrical components Germany EA Elektro Automatik model EA Elektro Automatik price

EA Elektro Automatik electrical components are instruments that measure by converting high primary current to low secondary current based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary winding has very few turns and is connected in series in the circuit where the current needs to be measured. Therefore, the full line current often flows through it. The secondary winding has more turns and is connected in series in the measuring instrument and protection circuits. When the current transformer is in operation, its secondary circuit is always closed, so the impedance of the coil connected in series with the measuring instrument and protection circuit is very small, and the operating state of the current transformer is close to a short circuit. The current transformer converts high primary current to low secondary current for measurement; the secondary side must not be open-circuited. The principle of the current transformer is based on electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary winding has very few turns and is connected in series in the circuit where the current needs to be measured, so the full line current often flows through it. The secondary winding has more turns and is connected in series in the measuring instrument and protection circuits. When the current transformer is in operation, its secondary circuit is always closed, so the impedance of the coil connected in series with the measuring instrument and protection circuit is very small, and the operating state of the current transformer is close to a short circuit.

EA Elektro Automatik electrical component classification

A self-inductor generates a magnetic field around the coil when current flows through it. When the current in the coil changes, the surrounding magnetic field changes accordingly, and this changing magnetic field induces an electromotive force (induced EMF) in the coil itself (EMF represents the terminal voltage of the ideal power source of an active component), which is self-induction. An electronic component made by winding wire with a certain number of turns, capable of producing a certain amount of self-inductance or mutual inductance, is commonly called an inductor coil. To increase inductance, improve the quality factor, and reduce volume, an iron core or magnetic core made of ferromagnetic material is often added. The basic parameters of an inductor include inductance, quality factor, inherent capacitance, stability, current rating, and operating frequency. An inductor composed of a single coil is called a self-inductor, and its self-inductance is also known as the self-inductance coefficient. Mutual induction occurs when two inductor coils are close to each other, and the magnetic field change in one coil affects the other. This effect is mutual induction. The magnitude of mutual induction depends on the self-inductance of the coils and the degree of coupling between them. Components manufactured using this principle are called transformers or mutual inductors.

EA Elektro Automatik electrical component function

Low-power resistors are typically carbon film types encapsulated in plastic housings, while high-power resistors are usually wire-wound resistors, made by winding high-resistivity metal wire around a ceramic core. If a resistor's resistance is close to zero ohms (for example, a large-cross-section wire between two points), it offers no obstruction to current, and the circuit parallel to such a resistor is short-circuited, resulting in infinite current. If a resistor has infinite or very high resistance, the circuit in series with that resistor can be regarded as an open circuit, with zero current. Resistors commonly used in industry fall between these two extremes; they have a certain resistance and allow a certain current to pass, but the current is not as high as in a short circuit. The current-limiting function of a resistor is similar to the role of a small-diameter pipe connected between two large-diameter pipes in restricting water flow. Resistance, usually abbreviated as R, is a fundamental property of a conductor, related to the conductor's size, material, and temperature. Ohm's law states that I=U/R, so R=U/I. The basic unit of resistance is the ohm, represented by the Greek letter "Ω". It is defined as the resistance value corresponding to a current of one ampere generated when one volt is applied across a conductor. The main function of a resistor is to obstruct current flow. In fact, "resistance" refers to a property, while "resistor" in electronic products usually refers to the component itself. Ohm is often abbreviated as Oh. Common units for expressing resistance values also include kilo-ohm (kΩ), mega-ohm (MΩ), and milli-ohm (m Ω).

EA Elektro Automatik electrical component principle

A diesel engine drives the generator to operate, converting the energy of diesel into electrical energy. Inside the diesel engine cylinder, clean air filtered through the air filter mixes thoroughly with high-pressure atomized diesel injected from the nozzle. Under the compression of the upward-moving piston, the volume decreases, and the temperature rises rapidly to reach the ignition point of diesel. The diesel ignites, the mixed gas burns violently, the volume expands rapidly, pushing the piston downward, which is called "work". A 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 in a certain order. The thrust acting on the piston is converted into the force driving the crankshaft to rotate via the connecting rod, thereby rotating the crankshaft. By installing a brushless synchronous AC generator coaxially with the power machine's crankshaft, the rotation of the power machine drives the rotor of the generator. Using the principle of 'electromagnetic induction', the generator outputs induced electromotive force, generating current through the closed load circuit.

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