pegro electrical components Germany pegro model pegro price

pegro electrical component is a transducer that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium (usually free space), or performs the reverse conversion. It is the component used in radio equipment to transmit or receive electromagnetic waves. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, and radio astronomy, which use electromagnetic waves to transmit information, all rely on antennas for operation. In addition, in terms of transmitting energy using electromagnetic waves, non-signal energy radiation also requires antennas. General antennas possess reciprocity, meaning the same antenna can be used as both a transmitting antenna and a receiving antenna. The basic characteristic parameters of the same antenna for transmission or reception are identical. This is the reciprocity theorem of antennas. We know that radio equipment such as communication, radar, navigation, broadcasting, and television devices transmit information via radio waves and require the radiation and reception of radio waves. In radio equipment, the device used to radiate and receive radio waves is called an antenna. The antenna provides the necessary coupling between the transmitter or receiver and the medium propagating the radio waves. Like transmitters and receivers, the antenna is also an important component of radio equipment.

pegro electrical component characteristics

Sensitivity refers to the ratio of the change in output quantity to the change in input quantity of a sensor under steady-state operating conditions. It is the slope of the output-input characteristic curve. If there is a linear relationship between the sensor's output and input, then the sensitivity S is a constant. Otherwise, it will vary with changes in the input quantity. The dimension of sensitivity is the ratio of the dimensions of the output and input quantities. When the dimensions of the sensor's output and input quantities are the same, sensitivity can be understood as the amplification factor. Increasing sensitivity yields higher measurement accuracy. However, the higher the sensitivity, the narrower the measurement range, and stability is often poorer.

pegro electrical component parameters

(1) Nominal capacitance is the capacitance marked on the capacitor. However, there is a deviation between the actual capacitance of the capacitor and the nominal capacitance; the accuracy class corresponds to the permissible error. General capacitors commonly use classes I, II, and III, while electrolytic capacitors use classes IV, V, and VI to indicate capacitance accuracy, selected according to application. The capacitance value of an electrolytic capacitor depends on the impedance presented during operation under AC voltage; the capacitance value changes with variations in operating frequency, temperature, voltage, and measurement method. The unit of capacitance is F (Farad). Since a capacitor is a "container" for storing electric charge, there is the issue of "capacity" size. To measure the ability of a capacitor to store electric charge, the physical quantity of capacitance is defined. A capacitor can only store electric charge under the action of an applied voltage. Different capacitors may store different amounts of charge under voltage action. Internationally, it is uniformly stipulated that when a DC voltage of 1 Volts is applied to a capacitor, the amount of charge it can store is the capacitance of that capacitor (i.e., the charge per unit voltage), represented by the letter C. The basic unit of capacitance is the Farad (F). (2) Rated voltage is the maximum DC voltage that can be continuously applied to the capacitor at the minimum ambient temperature and rated ambient temperature. If the operating voltage exceeds the withstand voltage of the capacitor, the capacitor will break down, causing damage. In practice, as the temperature rises, the withstand voltage value will decrease. (3) Insulation resistance. When DC voltage is applied to a capacitor, leakage current is generated; the ratio of the two is called insulation resistance. When the capacitance is small, its value mainly depends on the surface state of the capacitor; generally, the larger the insulation resistance, the better. (4) Loss. The energy consumed due to heating per unit time when a capacitor is under the action of an electric field is called loss. Loss is related to frequency range, dielectric material, conductance, and the resistance of the metal parts of the capacitor. (16) Frequency characteristics. As frequency increases, the capacitance of general capacitors tends to decrease. When the capacitor operates below its resonant frequency, it exhibits capacitive behavior; when it exceeds its resonant frequency, it exhibits inductive behavior, at which point it is no longer a capacitor but an inductor. Therefore, it is essential to avoid operating the capacitor above its resonant frequency.

pegro electrical component characteristics

(1) wide transient response range, strong harmonic measurement capability. The quality of transient characteristics is an important parameter for judging 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 current transformers is mainly determined by the electronic circuit section, without the problem of iron core saturation, thus accurately reflecting the transient process on the primary side. The structure of optical sensors allows for the measurement of harmonics on high-voltage power lines, which is difficult to achieve with electromagnetic induction transformers. (2) Digital interface, strong communication capability. Since the optical sensor transmits optical digital signals, it interfaces easily with communication networks, and there is no measurement error during transmission. Meanwhile, with the widespread adoption of microprocessor-based protection and control equipment, optical current transformers can directly provide digital quantities to secondary equipment, thereby eliminating the transformers and A/D sampling sections in original protection devices, greatly simplifying secondary equipment and promoting research into new protection principles. (3) Small volume, light weight, easy to upgrade, meeting the requirements for miniaturization and compactness of substations. Since optical sensors rely on sensor heads and electronic circuits for signal acquisition and processing, they are small in size, with weights generally below 1010 kg, facilitating integration into AIS or GIS, thereby significantly reducing the footprint of substations and meeting the requirements for substation miniaturization and compactness. At the same time, connecting optical current transformers to secondary equipment via a small number of optical fibers can greatly reduce cable trenches and cabling.

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