vipa electrical components Germany vipa model vipa price

vipa electrical components refer to an electrical device that disconnects the circuit by melting the fuse element with the heat generated by itself when the current exceeds a specified value. A fuse is a current protection device made based on the principle that when the current exceeds the specified value for a period of time, the heat generated by itself melts the fuse element, thereby disconnecting the circuit. Fuses are widely used in high and low voltage distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, and are one of the most commonly used protective devices. Using a metal conductor as the fuse element connected in series in the circuit, when overload or short-circuit current passes through the fuse element, it melts due to its own heating, thereby disconnecting the circuit. The fuse has a simple structure and is easy to use, and is widely used in power systems, various electrical equipment, and household appliances as a protective device.

vipa electrical component characteristics

The static characteristics of a sensor refer to the relationship between the output and input of the sensor for static input signals. Since the input and output are independent of time at this time, their relationship, i.e., the static characteristics of the sensor, can be described by an algebraic equation without time variables, or by a characteristic curve drawn with the input as the abscissa and the corresponding output as the ordinate. The main parameters characterizing the static characteristics of sensors include: linearity, sensitivity, hysteresis, repeatability, drift, etc. (1) Linearity: refers to the degree to which the actual relationship curve between the sensor output and input deviates from the fitted straight line. It is defined as the ratio of the maximum deviation between the actual characteristic curve and the fitted straight line within the full scale range to the full scale output value. (2) Sensitivity: Sensitivity is an important indicator of the static characteristics of a sensor. It is defined as the ratio of the increment of the output to the corresponding increment of the input that causes this increment. Use S to represent sensitivity. (3) Hysteresis: Hysteresis is the phenomenon where the input-output characteristic curves do not coincide during the change of the input from small to large (forward stroke) and from large to small (reverse stroke). For the same magnitude of input signal, the output signals of the sensor's forward and reverse strokes are not equal, and this difference is called the hysteresis difference. (4) Repeatability: Repeatability refers to the degree of inconsistency of the characteristic curves obtained when the sensor input changes continuously multiple times in the same direction over the full scale. (5) Drift: Sensor drift refers to the phenomenon where the sensor output changes with time while the input remains constant. There are two reasons for drift: one is the sensor's own structural parameters; the other is the surrounding environment (such as temperature, humidity, etc.). (6) Resolution: When the sensor input increases slowly from a non-zero value, the output undergoes an observable change after exceeding a certain increment. This input increment is called the sensor's resolution, i.e., the minimum input increment. (7) Threshold: When the sensor input increases slowly from zero, the output undergoes an observable change after reaching a certain value. This input value is called the sensor's threshold voltage.

vipa electrical component principles

In the lines for power generation, transformation, transmission, distribution, and consumption, the current varies greatly, ranging from a few amperes to tens of thousands of amperes. To facilitate measurement, protection, and control, it needs to be converted to a relatively uniform current. In addition, the voltage on the lines is generally high, so direct measurement is 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, mainly 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 used to expand the instrument range.) Current transformers work based on the principle of electromagnetic induction, similar to transformers; transformers transform voltage, while current transformers transform current. The winding of the current transformer connected to the measured current is called the primary winding; the winding connected to the measuring instrument is called the secondary winding. The current ratio of the primary winding current I1 to the secondary winding I9 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, represented by Kn.

vipa electrical component classification

Light-emitting diodes can also be divided into ordinary monochrome LEDs, high-brightness LEDs, ultra-high-brightness LEDs, color-changing LEDs, flashing LEDs, voltage-controlled LEDs, infrared LEDs, and negative resistance LEDs. The control modes of LED include constant current and constant voltage. There are various dimming methods, such as analog dimming and PWM dimming. Most LED adopt constant current control, which can maintain the stability of LED current, making it less susceptible to changes in VF, thereby extending the service life of LED lamps.

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