YNXZ-L variable frequency adjustable induction generator AC withstand voltage test device requires the use of power frequency voltage. The current national standard defines the frequency of power frequency voltage as 45Hz～65Hz, but in many test occasions, the generator is required to be 50Hz±2 Hz AC test, and the electric capacity of the generator stator winding to ground is relatively large. At present, most domestic test units use resonant transformers to test it, but the resonant transformer itself is very heavy, often weighing tons, and the field test is very difficult. Convenience. In response to this, our company has designed and manufactured an AC withstand voltage resonance test device for a frequency-modulated induction generator.

The YNXZ-L variable frequency adjustable induction generator AC withstand voltage test device can not only use the method of adjusting the inductance of the reactor to achieve the resonance state, but also use the method of adjusting the operating frequency of the system to achieve the resonance state, and the above two methods can also be used at the same time. Resonance state. When the frequency is needed for the test, adjust the frequency of the excitation source to the required frequency, and then adjust the inductive reactance of the reactor according to the capacitance of the tested product to make the system resonate and generate high voltage. During the boosting process, if resonance occurs If the point is deviated, the resonance point can be accurately found by fine-tuning the frequency to ensure a high Q value, thereby reducing the power supply capacity and the volume and weight of the test equipment.

1. The overall weight of the equipment is greatly reduced by the AC withstand voltage test of the generator of the same voltage level and the same capacity, and the weight of a single piece of equipment is less than 60 kg, which completely solves the problem of difficult on-site handling;

2. The principle of the whole set of equipment is excellent, and the new frequency modulation technology is applied to strictly guarantee the power frequency withstand voltage test requirements of the generator; the scope of application is wide, which greatly enhances the use value of the equipment;

3. Equipped with 20Hz-300Hz frequency conversion control source, its protection function is strong, the output waveform is good, the stability is good, it has a variety of working modes, easy to operate, and adopts 220V or 380V two power sources, which is convenient for on-site power supply;

4. The method of adjusting the sense first and then the frequency modulation can accurately find the Q point and avoid the resonance shift caused by the voltage rise;

5. Flexible configuration and strong extension function. Different types of reactors can be selected or multi-section series-parallel connection can be used to meet the test requirements of all capacitive test samples of the power system; at the same time, it can meet the occasions where power frequency test is required, and it can also meet the occasions where frequency conversion mode is required. It can be used for generator AC withstand voltage test and cable AC withstand voltage test, realizing one machine with multiple functions and high cost performance.