Product Features
Output voltage and current waveforms are good, distortion less than 0.5%.
2. Requires a small capacitance, with the power supply capacity being 1/Q of the test capacity, where Q can range from 20 to 60.
3. No overvoltage protection is required. When the sample is punctured, the system becomes out of tune, and the resonant high voltage vanishes. The reactor then immediately limits the short-circuit current, exacerbating the damage to the sample.
4. Easy for on-site handling, this unit is a dry-type combined series resonant device, consisting of an excitation transformer and multiple resonant reactors. Each component unit is compact in size and lightweight.
5. The protection functions are comprehensive, including zero-point protection (preventing system startup when the voltage output control knob is not at zero), over-voltage protection, over-current protection, and arc protection, ensuring the reliability of the system.
TPXB-D Type Variable Frequency Series Resonant Voltage Proof Power Supply
Variable Frequency Power Supply TPXB-D-kW/380V           1 Unit
Rated Output Capacity: kW
Power Supply: 380±10%V (3-phase), industrial frequency
Output Voltage: 0 – 400V, Single Phase
Rated Input Current: 300A
Rated Output Current: 300A
Voltage Resolution: 0.01 kV
Voltage Measurement Accuracy: 1.5%
Frequency Range: 30 – 300 Hz
Frequency adjustment resolution: ≤0.1Hz
Frequency Stability: 0.1%
Operation Time: Continuous for 5 minutes under rated capacity
Component temperature under rated capacity continuous operation for 5min ≤ 65K
Noise Level: ≤50 dB

TPXB-C Series Variable Frequency Resonant Boosting Power Supply
Frequency Converter Power Supply TPXB-C-22kW/220/380V                    1 Unit
Rated Output Capacity: 22kW
Working Voltage: 220/380±10%V (Single/Three Phase), Industrial Frequency
Output Voltage: 0-400V, Single Phase
Rated Input Current: 55A
Rated Output Current: 55A
Voltage Resolution: 0.01 kV
Voltage Measurement Accuracy: 1.5%
Frequency Range: 30 – 300 Hz
Frequency adjustment resolution: ≤0.1Hz
Frequency Stability: 0.1%
Operating Time: Continuous for 60 minutes under rated capacity
Component high temperature ≤ 65K during continuous operation for 60 minutes under rated capacity.
Noise Level: ≤50 dB

The TPXB-D type tuning transformer series resonance voltage withstand device is primarily designed and manufactured for the AC voltage withstand test of 11kV/30MW hydraulic turbines. The reactors are designed in two separate units.
The TPXB-D type variable frequency series resonance voltage withstand device is mainly composed of a variable frequency control power supply, excitation transformer, reactor, and capacitor voltage divider.

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