Technical
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How many methods are there for AC withstand voltage tests using series resonance?
Series resonance (also known as resonance device) for AC withstand voltage tests includes three methods: ultra-low frequency test method, oscillation voltage test method, and resonance withstand voltage test method. Test the ultra-low frequency method In the common power frequency withstand volta...Read more -
The working principle of the variable-frequency series resonance test device
The variable frequency series resonance test device is a high-precision detection equipment widely used in the insulation testing of power equipment. It generates high voltage through a resonant circuit composed of inductors, capacitors and resistors at a specific frequency, thereby conducting wi...Read more -
Precautions for the Use of Variable Frequency Series Resonance Devices
In modern power systems, variable-frequency series resonant devices, with their highly efficient and energy-saving features, have become indispensable important equipment in the field of high-voltage testing. To ensure operational safety and extend the service life of the equipment, users must st...Read more -
The conditions for series resonance and parallel resonance
In circuit analysis, the resonance phenomenon is a crucial concept, which describes the special response generated by inductors and capacitors under specific conditions. Resonance phenomena can be classified into two basic types: series resonance and parallel resonance. Each of these types has it...Read more -
Application scope and standard procedures of relay protection tester
The relay protection comprehensive tester is the core equipment in the secondary field of the power system. Its application covers the entire life cycle of the device, including research and development, production, acceptance, installation, commissioning, maintenance, and technical renovation. I...Read more -
Cable series resonance test wiring
In the operation and maintenance of power systems, the cable series resonance test is an important high-voltage testing method. This test method can effectively detect the insulation performance of cables and ensure the safe operation of power equipment. This article will provide a detailed intro...Read more -
How to eliminate the series resonance generated in a circuit?
Series resonance is a common but potentially serious phenomenon in power systems and electronic circuit design. It occurs when the inductive reactance and capacitive reactance in a circuit cancel each other out at a specific frequency, causing a sharp increase in current that may damage equipment...Read more -
LC series resonant circuit
The LC series resonant circuit is an important resonant circuit structure in electronic circuits, consisting of an inductor L and a capacitor C connected in series. This circuit exhibits unique resonant characteristics at a specific frequency and is widely applied in fields such as radio communic...Read more -
Explanation of the selection method for transformer calibrators
Selecting a transformer calibrator is a rigorous technical decision that requires a deep integration of the instrument’s performance with actual needs and legal regulations. The core logic is: first, clarify the testing objective; then, follow compliance guidelines; and finally, select the ...Read more -
Series resonance impedance characteristics
The series resonant circuit is a special circuit structure that exhibits unique impedance characteristics at a specific frequency. When the inductive reactance and capacitive reactance in the circuit cancel each other out, the circuit presents a pure resistive characteristic, and at this point, t...Read more -
Solutions to Common Faults of AC Withstand Voltage Test Device
In the power system inspection work, the AC withstand voltage test device is an important tool for ensuring the safe operation of electrical equipment. This device applies an AC voltage higher than the rated voltage to test the insulation performance of electrical equipment. However, during actua...Read more -
Working Principle and Standard Procedures of SF6 Trace Moisture Tester
SF₆ gas is the “blood” of high-voltage electrical equipment such as GIS and circuit breakers, with excellent insulating and arc-extinguishing properties, but it is highly sensitive to moisture. Excessive moisture can lead to catastrophic consequences: Insulation deterioration: At high...Read more