escherich electrical components, German escherich models, escherich prices

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/lightning energy while suppressing the abnormal voltage to a safe range, thereby improving line safety and stability. In standby mode, surge absorbers (varistors) have very high impedance (several megaohms) relative to the protected electronic components and do not affect the characteristics of the original circuit design. However, when an instantaneous surge voltage occurs (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber drops low (to 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 and strong harmonic measurement capability. The quality of transient characteristics is an important parameter for determining whether a transformer can be applied in power systems, particularly regarding 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. In contrast, the frequency range of optoelectronic transformers is mainly determined by the electronic circuit section, without iron core saturation issues, allowing accurate reflection of the transient process on the primary side. The structure of optoelectronic sensors allows measurement of harmonics on high-voltage power lines, which is difficult to achieve with electromagnetic induction transformers. (2) Digital interface with strong communication capability. Since optoelectronic sensors transmit optical digital signals, they interface easily with communication networks without measurement errors during transmission. With the widespread adoption of microprocessor-based protection and control equipment, optoelectronic transformers can directly provide digital quantities to secondary equipment, eliminating the need for converters and A/D sampling sections in original protection devices. This greatly simplifies secondary equipment and promotes research into new protection principles. (3) Small size, light weight, and easy upgradability meet the requirements for miniaturization and compactness of substations. As optoelectronic sensors rely on sensor heads and electronic circuits for signal acquisition and processing, they are small in size and generally weigh less than 1004 kg, facilitating integration into AIS or GIS. This significantly reduces the footprint of substations, meeting miniaturization and compactness requirements. Additionally, connecting optoelectronic transformers to secondary equipment via a small number of optical fibers greatly reduces 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 even in environments with 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 (receiver) 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 usually have automatic mutual interference prevention functions, so mutual interference is generally 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 cross-set the emitters and receivers, and increase the spacing between groups when there are more than 9 groups. Using models with different operating frequencies is also a good approach. 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. Using models with different operating frequencies is also an option. 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 to prevent malfunction. Eliminating background influence: When using retro-reflective diffuse emitters and receivers, stable detection may be compromised if the detected object is close to the background, or if the photoelectric switch or background is a smooth object with high reflectivity. To eliminate this, switch to distance-limited emitters and receivers, move away from the background, remove the background, paint the background matte black, or roughen/darken the background. Use of self-diagnosis function: During installation or use, minor optical axis shifts, lens contamination, dust accumulation, external noise, or out-of-range ambient temperatures may occur due to table/background influences or vibration. These issues may cause the photoelectric switch to deviate from its stable operating zone. In such cases, the self-diagnosis function of the photoelectric switch can trigger 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, 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. Conditioning circuits are responsible for amplifying and modulating the electrical signals output by the conversion elements. Conversion elements and conditioning circuits generally require power supply from auxiliary power sources.

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