Product Details
HDXZ Series Power Frequency Resonant Device for Generators is suitable for AC withstand voltage tests of thermal and hydro generators. The AC withstand voltage test for generators requires the use of power frequency voltage. Currently, the national standard defines the frequency of power frequency voltage as 45Hz to 65Hz. However, in many test situations, a 50Hz±2 Hz AC test is required for generators, and the ground capacitance of the generator stator winding is relatively large. At present, most domestic testing units use resonant transformers for such tests, but resonant transformers themselves are very heavy, often weighing tons, making on-site testing very inconvenient. In response to this situation, our company has designed and manufactured a frequency-tuning and inductance-tuning resonant voltage boosting device for generator AC withstand voltage tests. This series of devices can achieve a resonant state by adjusting the inductance of the reactor, or by adjusting the system operating frequency, or by using both methods simultaneously. When a specific frequency is needed for testing, the frequency of the excitation source is adjusted to the required frequency, and then the reactance of the reactor is adjusted according to the capacitance of the test object to make the system resonate and generate high voltage. During the voltage boosting process, if the resonance point deviates, the resonance point can be accurately found by fine-tuning the frequency, ensuring a high Q value, thereby minimizing the power supply capacity and the size and weight of the test equipment.
Product Features:
1. For AC withstand voltage tests of generators with the same voltage level and capacity, the overall weight of the equipment is greatly reduced, and the weight of each single component is less than 60 kg, completely solving the problem of difficult on-site handling;
2. The entire device has an advanced principle and applies new frequency-tuning and inductance-tuning technology, strictly ensuring the requirements of the generator power frequency withstand voltage test; it has a wide application range, greatly enhancing the value of the equipment;
3. Equipped with a 20Hz-300Hz variable frequency control source, it has strong protection functions, good output waveform, good stability, multiple working modes, and is easy to operate. It also supports both 220V and 380V power supplies for convenient on-site power access;
4. The method of first adjusting inductance and then frequency can accurately find the maximum Q point, avoiding resonance deviation caused by voltage rise;
5. Flexible configuration and strong expansion capabilities. Different types of reactors can be selected or multiple sections can be connected in series or parallel to meet the test requirements of all capacitive test objects in the power system; it can also meet the occasions requiring power frequency tests or variable frequency tests; the device can be used for both generator AC withstand voltage tests and cable AC withstand voltage tests, achieving multi-purpose use with high cost performance.
Product Parameters
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