The necessity of series resonance variation test
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1550
2017-12-25
The series resonance transformer is necessary to test the insulation integrity of all high-voltage equipment.
The standard AC test system has been able to provide a solution for some applications, but when certain devices have higher voltages and current requirements, the line AC test system may not be sufficient.
In order to limit the input power of the resonance test system requires a capacitor test object and a core of the variable (variable reactor).
The design of the resonance test system adjusts the inductance to the high voltage circuit to adjust the capacitive compensation resonance system.
The main advantages of series resonance variation are very low (actual) input power output (reactive power) power requirements.
Series resonance variation also has low input power requirements and high output power.
Another solution is the variable frequency series resonance test system.
These systems are typically used to test GIS or cables in the field because they are smaller than the core resonance test systems of variables.
Adjust the frequency conversion system rather than change the frequency of the inductive test system.
The main advantage of these systems is that the core of the steel is fixed, so it can be smaller, thus making the overall size of the system smaller and lighter.
A resonant circuit is used to selectively respond to a given frequency signal and discriminate against different frequency signals.
If the circuit is responding, the frequency of selection is narrowed, and the circuit has a higher "selectivity".
