Reactor selection method
The variable frequency series resonance test system realizes the resonant state by changing the frequency of the power supply so that the insulation performance of the electrical equipment can be tested efficiently. When choosing a reactor, it is necessary to consider factors such as rated voltage, rated current, structure, installation position, and required quantity to ensure the accuracy and safety of the test.
Determine the rated voltage of the reactor: The rated voltage of the reactor should be higher than the operating voltage of the device under test to ensure that too high a voltage will not damage the reactor during the test.
Consider the reactor's rated current: The reactor's rated current should be able to withstand the maximum current that may be generated during the test to avoid overload damage.
Choosing the right reactor structure: The structure of the reactor has an important effect on its performance. The core reactor has a small volume and loss, but may be saturated at a large current. The air-core reactor has better linearity and heat dissipation performance, but the volume is larger.
Consider where the reactor is installed: Where the reactor is installed affects its performance and safety. Typically, the reactor can be installed either on the power or neutral sides, depending on test requirements and field conditions.
Calculate the number of reactors required: Calculate the number of reactors required based on the capacitance of the device under test and the required test voltage. The formula can calculate the total reactor voltage required and then divided it by the rated voltage of the individual reactors to determine the number required.