WEBERSYSTEMSYST electrical components Germany WEBERSYSTEMSYST model WEBERSYSTEMSYST price

WEBERSYSTEMSYST 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, thus protecting electronic products or more expensive components.

WEBERSYSTEMSYST electrical component characteristics

The so-called dynamic characteristic refers to the output characteristic of a sensor when the input changes. In practical work, the dynamic characteristic of a sensor is often expressed by its response to certain standard input signals. This is because the response of a sensor to standard input signals can be easily obtained through experimental methods, and there is a certain relationship between its response to standard input signals and its response to arbitrary input signals; often, knowing the former allows one to deduce the latter. The most commonly used standard input signals are step signals and sinusoidal signals, so the dynamic characteristics of sensors are also often expressed by step response and frequency response.

WEBERSYSTEMSYST 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 output and input of the sensor, 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 output and input quantities of the sensor are the same, sensitivity can be understood as the amplification factor. Increasing sensitivity can achieve higher measurement accuracy. However, the higher the sensitivity, the narrower the measurement range, and the stability is often poorer.

WEBERSYSTEMSYST electrical component principle

In power generation, transformation, transmission, distribution, and consumption lines, current magnitudes vary significantly, ranging from a few amperes to tens of thousands of amperes. To facilitate measurement, protection, and control, it is necessary to convert these to a relatively uniform current. Additionally, voltages on lines are generally high, making direct measurement very dangerous. Current transformers serve the purpose of current transformation and electrical isolation. For pointer-type ammeters, the secondary current of current transformers is mostly at the ampere level. For digital instruments, the sampled signal is generally at the milliampere level. The secondary current of miniature current transformers is at the milliampere level, primarily serving as a bridge between large transformers and sampling. Miniature current transformers are also referred to as "instrument current transformers." ("Instrument current transformer" implies precision current transformers with multiple current ratios used in laboratories, generally for expanding instrument ranges.) Similar to transformers, current transformers operate based on the principle of electromagnetic induction; transformers transform voltage, whereas current transformers transform current. The winding connected to the measured current is called the primary winding; the winding connected to the measuring instrument is called the secondary winding. The ratio of the primary winding current I1 to the secondary winding I4 current is called the actual current ratio K. The current ratio when the current transformer operates at rated current is called the rated current ratio of the current transformer, denoted by Kn.

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