Electric motor Protection

Electric Motor Protection – Types of Faults and Protection Devices Description

Electric motors are subject to a variety of stresses and disturbances. A portion of the disturbances is attributable to external factors, such as over- and Undervoltage, over- and under frequency, harmonics, unbalanced system voltages, and supply disruptions, such as autoclosing in the supplying network. External disturbances might be caused by motor dirt, cooling system and …

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The difference between active and passive filters

Any electronic system has its own frequency bandwidth (limit to the highest frequency of the signal), and the frequency characteristics reflect the essential characteristics of the electronic system. The filter is an engineering application circuit designed according to circuit parameters’ influence on the circuit’s frequency bandwidth. Everyone knows that there are many filters, and the easiest way …

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Harmonics in Power System

Harmonics in Power System: generation and hazards of Harmonics.

The root cause of harmonic generation in power systems is non-linear loads. When the current flows through the load, it does not have a linear relationship with the applied voltage, and a non-sinusoidal current is formed, thereby generating harmonics. The harmonic frequency is an integer multiple of the fundamental frequency. According to the analysis principle …

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All About Inductors

Inductors are components that convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to that of a transformer but with only one winding. An inductor has a specific inductance, it only resists changes in current flow. If the inductor has no current flowing, it will try to block the current …

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Components

The Difference Between Active Components And Passive Components

Simply speaking, a device that requires energy (power) power is called an active device, and a device that does not require energy (power) power is a passive device. Active devices are generally used for signal amplification, conversion, etc., and passive devices are used for signal transmission, or “signal amplification” through directivity. Capacitance, resistance, and inductance are passive …

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