escherich electrical components Germany escherich model escherich price

escherich electrical components are surge absorbers/varistor assemblies. Due to their nonlinear resistance change with voltage, they exhibit symmetry in both directions (positive and negative). They respond to abnormal voltages on the line, absorbing most of the surge/spike energy while suppressing the abnormal voltage to a safe range, thereby improving the safety and stability of the circuit. In the standby state, the surge absorber (varistor) has very high impedance (several megaohms) relative to the protected electronic components and does not affect the characteristics of the original design circuit. However, when an instantaneous surge voltage appears (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber drops low (only a few ohms), causing a short circuit in the line, thereby protecting electronic products or more expensive components.

escherich electrical component characteristics

(1) wide transient response range, strong harmonic measurement capability. The quality of transient characteristics is an important parameter for determining whether a transformer can be applied in power systems, especially in coordination with relay protection operation times. Traditional electromagnetic transformers have poor response characteristics to high-frequency signals due to the presence of an iron core and cannot correctly reflect the transient process on the primary side. The frequency range of optical-electronic transformers is mainly determined by the electronic circuit section, without iron core saturation issues, thus accurately reflecting the transient process on the primary side. The structure of optical sensors allows measurement of harmonics on high-voltage power lines, which is difficult to achieve with electromagnetic induction transformers. (2) digital interface, strong communication capability. Since optical sensors transmit optical digital signals, they interface easily with communication networks, and there is no measurement error during transmission. With the widespread adoption of microprocessor-based protection and control equipment, optical-electronic transformers can directly provide digital quantities to secondary equipment, eliminating the need for converters and A/D sampling sections in original protection devices, greatly simplifying secondary equipment and promoting research into new protection principles. (3) small size, light weight, easy to upgrade, meeting the requirements for miniaturization and compactness of substations. Since optical sensors acquire and process signals via sensor heads and electronic circuits, they are small in size, with weights generally below 1004 kg, facilitating integration into AIS or GIS, significantly reducing the footprint of substations and meeting miniaturization and compactness requirements. Additionally, optical-electronic transformers connect to secondary equipment via a small number of optical fibers, greatly reducing cable trenches and cabling.

escherich electrical component functions

Photoelectric switches can be used in various application scenarios. Avoid strong light sources; photoelectric switches generally operate stably under high ambient illumination. However, avoid aligning the sensor's optical axis directly with strong light sources such as sunlight or incandescent lamps. If the angle between the sensor's (receiver's) optical axis and the strong light source cannot be changed, install shading plates around the top of the sensor or use a long shading tube. Prevent mutual interference: New photoelectric switches typically have automatic anti-interference functions, so mutual interference is usually not a concern. However, when several groups of HGK series through-beam infrared photoelectric switches are installed close together in parallel, prevent interference between adjacent groups and mutual interference. The most effective way to prevent this interference is to stagger the transmitters and receivers. When exceeding 9 groups, increase the spacing between groups. Of course, using models with different operating frequencies is also a good method. For retro-reflective photoelectric switches, an effective way to prevent mutual interference is to increase the spacing. The greater the detection distance, the larger the spacing should be; the specific spacing should be determined based on debugging conditions. Of course, models with different operating frequencies can also be used. Influence of mirror angle: When the detected object is glossy or encounters a smooth metal surface, the reflectivity is generally high, acting like a mirror. Adjust the installation so that the optical axis is not perpendicular to the detected object, thereby preventing malfunction. Eliminating background influence: When using retro-reflective diffuse transmitters and receivers, unstable detection may occur if the detected object is close to the background, or if the photoelectric switch or background is a smooth object with high reflectivity. Therefore, switch to distance-limited transmitters and receivers, or eliminate the issue by moving away from the background, removing the background, painting the background matte black, or making the background rough and dark. Use of self-diagnostic function: During installation or use, minor deviations in the optical axis, lens contamination, dust accumulation, external noise, or ambient temperature exceeding limits may occur due to table or background influences and vibration. These issues may cause the photoelectric switch to deviate from its stable operating zone. In such cases, utilize the photoelectric switch's self-diagnostic function, which triggers the green stability indicator light to notify the user to make timely adjustments.

escherich electrical component composition

Sensors generally consist of four parts: sensitive elements, conversion elements, signal conditioning circuits, and auxiliary power supplies. Sensitive elements directly sense the measured quantity and output physical quantity signals with a definite relationship to the measured quantity. Conversion elements convert the physical quantity signals output by the sensitive elements into electrical signals. Signal conditioning circuits are responsible for amplifying and modulating the electrical signals output by the conversion elements. Conversion elements and signal conditioning circuits generally require power supply from auxiliary power sources.

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