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The Reason Why Using the Ac Automatic Voltage Regulator (AVR)


Unstable voltage will cause fatal injury to production or testing equipment, affect production, cause delays in delivery, and unstable product quality. At the same time, it accelerates the aging of the equipment, affects the service life and even burns out the accessories, which makes the trouble of people that need to repair or update the equipment in a short period of time, wasting resources, or even a safety accident in serious cases, causing incalculable losses. Therefore, it is necessary to use an ac automatic voltage regulator (AVR), which will protect your equipment.


What’ s the reasons for using the ac automatic voltage regulator (AVR)? The voltage regulator mainly responds to the change of voltage, and its main classification has the following categories. According to the tests of power experts, the problems that often occur in the power grid and cause interference or damage to computers and precision instruments are mainly the following:


Surge: The effective value of the output voltage is higher than the rated value by 110%, and the duration is one or several cycles. The surge is mainly due to the high voltage generated by the sudden unloading of the power grid when the large electrical equipment connected to the power grid shuts down.


High voltage spike: refers to a voltage with a peak value of 6000v and a duration from one ten thousandth of a second to one half cycle (10ms). This is mainly due to lightning strikes, arc discharge, static discharge, or switching operations of large electrical equipment.


Transient overvoltage: Refers to a pulse voltage with a peak voltage as high as 20,000V, but with a duration between one millionth of a second and one ten thousandth of a second. The main reason and possible damage are similar to high-voltage spikes, but there are differences in solutions.


Voltage sag: refers to the low-voltage state where the effective value of the mains voltage is between 80% and 85% of the rated value, and the duration lasts for one to several cycles. This problem may be caused by the start of large equipment, the start of a large motor, or the access of a large power transformer.


Wire noise: refers to radio frequency interference (RFI) and electromagnetic interference (EFI) and various other high frequency interference. The operation of the motor, the operation of the relay, the operation of the motor controller, broadcast transmission, microwave radiation, and electrical storms, etc., can cause line noise interference.


Ac automatic voltage regulator (AVR) is indispensable for electrical equipment, especially high-tech and precision equipment with strict voltage requirements, which also prompts us to develop high-tech and more advanced voltage regulators to meet the needs of various instruments and equipment. Therefore, we should know the use of ac automatic voltage regulator (AVR), and also understand the role of it.


In KEBO, there are three types of ac automatic voltage regulators (AVR): Relay Type AVR, Servo Motor Type AVR and 3-Phase Stabilizer. Just select the suitable AVRs for your actual applications.

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