A range of applications

Frequency conversion series-resonant principle of complete sets of testing equipment using series resonant using series resonant excitation transformer excitation circuit, the output frequency by adjusting the controller, loop reactor in the l and sample c series resonance, resonant voltage is the voltage on the test. Variable frequency resonance test equipment widely used in electric power, metallurgy, petroleum, chemical and other industries, applicable to bulk, high-voltage capacitive handover and preventive test of the sample.

Apply to 10KV, 35KV and 110KV, 220KV, 500KV AC withstand voltage test of xlpe power cable

Apply 66KV, 110KV, 220KV, 500KV GIS AC voltage withstand test

For large generator transformer power frequency withstand voltage

Applicable to induced overvoltage withstand test of power transformer

Second, the main characteristics of

1 small size, light weight, suitable for field use

Variable frequency controller voltage, modulation, control and protection functions into one, eliminating the need for bulky voltage regulator, and easy and intuitively. Because the system Q value is higher (30-120), effectively solved due to insufficient power supply capacity constraints to field test. When the voltage is high, reactor using multilevel or lamination structure, easy to use, transportation and installation.

2 install the high reliability

Converter adopts advanced design, high quality IGBT drive circuit so the output waveform distortion, frequency stability, good IGBT, overcurrent, overvoltage (protection value according to the manual setting) and discharge protection function, can protect the equipment and personal safety; When the test discharges or breakdown, due to a corrupted resonance, short circuit current is small, only the 1/Q test test current, and avoids the damage caused by the breakdown of samples.

3 the equivalent of good

Close to the frequency (30HZ-300HZ) AC voltage as the power source, whether it be on the equivalent and consistent with 50HZ/60HA frequency power very close to ensure the validity and reliability of test results.

Composition of the whole device: power inverter, excitation transformers, reactors, capacitors, voltage divider composed of

Specific configuration of equipment specifications according to customer's actual needs.