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Product Features:
1. The 75KVA/75KV Variable Frequency Series Resonance Test System significantly reduces the required power supply capacity; the power supply needed for the test is only 1/Q of the test capacity.
2. Small size and light weight, generally 1/3 to 1/5 of ordinary test devices;
3. The resonant power supply frequency regulation and power components of the series resonance test device use high-quality imported components from Japan. The design incorporates a resonant filter circuit, which improves output voltage waveform distortion, achieving a good sine wave and effectively preventing false breakdown of the test object due to harmonic peaks.
4. The variable frequency power supply has strong protection functions and good stability; it supports fully automatic (auto tuning, auto voltage boosting), fully manual (manual tuning, manual voltage boosting), and semi-automatic (auto tuning, manual voltage boosting, and manual tuning, auto voltage boosting) modes, which can be switched arbitrarily for convenient operation; it uses 220V or 380V single-phase power, making it easy to obtain power on site.
5. Flexible configuration and strong expandability. The resonant reactor is designed with multiple units in a modular combination, which can be connected in series or parallel to meet various test requirements and facilitate on-site use.
6. Large touch screen LED LCD color display and external mouse allow direct setting of various parameters; test results can be saved, printed, uploaded, and reviewed.
Technical Parameters:
Rated Capacity: 405kVA;
Input Power: Single-phase 220V or three-phase 380V, frequency 50Hz;
Rated Voltage: 45kV; 90kV; 135kV; 270kV
Rated Current: 9A; 4.5A; 3A; 1.5A
Operating Frequency: 30-300Hz;
Output Waveform: Sine wave
Waveform Distortion Rate: Output voltage waveform distortion rate ≤1%;
Operating Time: Continuous 60min under rated load; 1.1 times overvoltage for 1 minute;
Temperature Rise: After continuous operation for 60min under rated load, temperature rise ≤65K;
Quality Factor: System's own Q≥30 (f=45Hz);
Protection Functions: Overcurrent, overvoltage, and flashover protection for the test object (see variable frequency power supply section for details);
Measurement Accuracy: System effective value class 1.5;
Working Environment:
Ambient Temperature: -10°C –50°C;
Relative Humidity: ≤90%RH;
Altitude: ≤1000 meters;
Product Introduction:
The 75KVA/75KV Variable Frequency Series Resonance Test System operates on the principle of series resonance, using an excitation transformer to excite the series resonance circuit. By adjusting the output frequency of the variable frequency controller, the reactor inductance L and the test object capacitance C in the circuit achieve series resonance, and the resonance voltage is the voltage applied to the test object. The variable frequency resonance test device is widely used in electric power, metallurgy, petroleum, chemical, and other industries, suitable for handover and preventive tests of capacitive test objects with large capacity and high voltage.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
