Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Substation Layout Scheme (One deck)1-Overhead incoming line2-Main transformer 4000kV3-Switch cabinet4-Switch cabine

Electricity is prevented from passing through the insulation of wires due to the properties of insulating materials. Insulators are specifically designed to resist the flow of electric current, allowing for safe handling and control of electrical systems. Here's how insulators work to prevent electricity from flowing through them: Electron-blocking capability: Insulators are materials with low conductivity, meaning they do not readily allow electrons to move through them. This is because their a

Substation Layout Scheme (Double deck)a:floor 2b:floor 11-35kV Overhead entry line2-Main transformer 6300kV3-Switch cabinet4-Switch cabine

Effect of phase Angle on power system failureWhen a power system fails, the phase Angle between voltage and current changes. This change is essential for understanding and analyzing the operating state of the power system. The following is a detailed explanation of the effect of phase Angle in the case of failure:Change in phase Angle Fault type and phase Angle: A short circuit fault, whether symmetrical or asymmetrical, can cause a significant change in the phase Angle between voltage and curre

The working principle of three-phase induction motors (also known as asynchronous motors) depends on the electromagnetic force generated by the interaction of the rotating magnetic field generated by the stator windings with the induced current in the rotor. In fact, one of the key features of the three-phase induction motor is its ability to generate a rotating magnetic field, which is crucial for the start and operation of the motor. The following details the working principle of the three-pha

A slip ring used in a motor is a device used to transmit an electrical signal between a rotating part and a fixed part. The design of slip rings can be changed according to different application scenarios and needs. The following are several common types of slip rings:Standard slip ringStandard slip rings are the most commonly used type and are suitable for general use. They are usually made of copper and equipped with brushes to brush the surface of the slip ring. Standard slip rings are suitab

For 50Hz motors, especially brand motors like SEW, there is a recommended minimum operating Frequency when using a Variable Frequency Drive (VFD) for speed control. According to the information you provided, the ordinary motor under the control of the inverter, can not be lower than 20Hz, below 20Hz will lose control. This means that, in most cases, when a 50Hz motor is operated under the control of a frequency converter, the minimum frequency should not be lower than 20Hz.Minimum frequency cons

The number of rotor poles in Induction motors is usually the same as the number of stator poles, because the working principle of the Motor depends on the rotating magnetic field generated by the interaction between the stator and the rotor. The following explains in detail why the number of rotor poles is usually the same as the number of stator poles, and explores whether reversing the number of poles can improve the performance of the motor.Why is the number of rotor poles the same as the num

When the load of induction motor increases, the rotor current changes. The working principle of an induction motor is based on the interaction between the rotating magnetic field generated by the stator windings and the induced current in the rotor windings. The following explains how the rotor current changes as the load increases:How it works when the load increases Load increase: When the load of the induction motor increases, it means that the motor needs to do more work to overcome greater

Series Capacitors are widely used in power systems, especially in transmission lines to improve the transmission capacity of the system, improve voltage regulation and reduce losses. However, there are several key issues to note when designing and calculating series capacitors:Voltage distribution problemDescriptionWhen multiple capacitors are connected in series, the voltages on each capacitor are not necessarily equal, but are distributed proportionally according to their respective capacitanc