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The functions of the four major components of the series resonant cable withstand voltage test equipment
Date: 2024-08-05Read: 10
The series resonant cable withstand voltage test equipment adopts the method of adjusting the power frequency to achieve resonance between the reactor and the tested capacitor, thereby obtaining high voltage and high current on the tested object. Due to its low power requirement, light weight and small size, it has been widely praised and applied at home and abroad, and is a new method and trend of high voltage testing. The device has protection functions such as overvoltage, overcurrent, zero start, and system detuning (flashover). The overvoltage and overcurrent protection values can be set according to user needs. When the test sample is flashover, the flashover protection action can be taken and the flashover voltage value can be recorded for experimental analysis. The device has three working modes: fully automatic mode, manual mode, and automatic tuning manual boost mode; Convenient for users to flexibly choose according to the on-site situation, improving the speed of testing.
Function of series resonant cable withstand voltage test equipment:
1. Power cable testing: Conduct AC withstand voltage tests on various specifications and lengths of power cables to inspect their insulation performance.
2. Generator testing: Conduct a voltage withstand test on the generator winding to ensure the reliability of the generator during actual operation.
3. GIS and SF6 switch testing: Conduct AC withstand voltage tests on gas insulated switches (GIS) and SF6 switches to detect their insulation condition and withstand voltage level.
4. Transformer testing: Conduct AC withstand voltage tests on power transformers to evaluate their insulation characteristics and ability to withstand high voltages.
5. Other equipment testing: AC withstand voltage testing of power high-voltage equipment such as busbars, bushings, transformers, etc.
Components of series resonant cable withstand voltage test equipment:
1. Variable frequency power supply: Variable frequency power supply is a key equipment that provides adjustable frequency power supply. It can adjust the output frequency according to the needs of different test objects.
2. Excitation Transformer: The excitation transformer is used to increase the output voltage of the variable frequency power supply to achieve the high voltage level required for the test.
3. Reactor: The reactor forms a series resonant circuit with the capacitance of the measured object, mainly playing a role in energy storage and current regulation in the circuit.
4. Capacitive voltage divider: Capacitive voltage dividers are used to measure high voltage by proportionally reducing the high voltage value of the object being measured, so that the instrument can measure safely and accurately.
