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

The circuit diagram of the house

Electrical engineering learning reference chartElectrical engineering is divided into five parts: foundation, equipment, power system, application, automation and communication, which are specific for reference.

10KV switch switchboard equipment system diagram

Cable protection wiring diagram

How an AC High Voltage Tester Works and Where It Is Used1. Working PrincipleAn AC high voltage tester (AC High Voltage Tester) is an instrument used to evaluate the insulation performance of electrical equipment by applying a higher-than-normal operating voltage. It tests whether the insulation material can withstand this high voltage without breaking down or allowing excessive leakage current. Below is a detailed explanation of how an AC high voltage tester works:1.1 Basic ConceptsInsulation Wi

The Significance of Series ResonanceSeries resonance is a special phenomenon that occurs in a circuit consisting of an inductor L, a capacitor C, and a resistor R connected in series. When the frequency of the circuit reaches a specific value, the reactance of the inductor and capacitor cancel each other out, resulting in the minimum total impedance and maximum current in the circuit. Series resonance plays a significant role in various fields such as radio communication, filter design, oscillat

The Significance of Series ResonanceSeries resonance is a special phenomenon that occurs in a circuit consisting of an inductor L, a capacitor C, and a resistor R connected in series. When the frequency of the circuit reaches a specific value, the reactance of the inductor and capacitor cancel each other out, resulting in the minimum total impedance and maximum current in the circuit. Series resonance plays a significant role in various fields such as radio communication, filter design, oscillat

The Relationship Between Low Power Factor and EfficiencyThe power factor (PF) and efficiency are two critical performance metrics in electrical systems, and there is indeed a relationship between them, especially in the operation of electrical equipment and systems. Below is a detailed explanation of how a low power factor affects efficiency:1. Definition of Power FactorThe power factor is defined as the ratio of active power (Active Power, P) to apparent power (Apparent Power, S), often denoted

Advantages of Parallel ResonanceParallel resonance circuits (also known as current resonance circuits) exhibit special electrical characteristics at a specific frequency and are widely used in radio communication, filter design, oscillators, and power electronics. Below are the primary advantages of parallel resonance:1. High Selectivity Frequency Selectivity: A parallel resonance circuit has maximum impedance at its resonant frequency and much lower impedance at non-resonant frequencies. This c

Enhancing Dielectric Strength in Vacuum Gaps for High-Voltage InsulationThere are primarily two methods to increase the dielectric strength of a vacuum gap to meet the insulation requirements at high voltage (HV):Increase the Contact Distance in a Two-Contact Configuration: In a vacuum, breakdown is predominantly a surface effect, heavily influenced by the condition of the contact surfaces. Unlike in SF6 gas, where breakdown is primarily a volume effect that scales linearly with the gap length,