This series resonant test system is specifically engineered for the power frequency withstand voltage testing of large hydro-generator stators. Addressing the challenge of massive capacitance (up to 2.5µF), our adjustable inductance (variable gap) reactor design locks resonance precisely at 50Hz or 60Hz, delivering a pure sinusoidal waveform with ultra-low harmonic distortion, fully compliant with international generator testing standards.

1, the required power capacity is greatly reduced, the power required for the test is only 1/Q of the test capacity.
2, small size, light weight, generally 1/3-1/5 of the ordinary test device;
3, resonant power supply frequency modulation and power components using high-quality components imported from Japan, the design is a resonant filter circuit, can improve the output voltage waveform distortion, obtain a good sinusoidal waveform, effectively prevent the harmonic peak on the test product error breakdown.
4, frequency conversion power supply protection function is strong, good stability; With automatic (automatic tuning, automatic boost), manual (manual tuning, manual boost) and semi-automatic (automatic tuning, manual boost and manual tuning, automatic boost) a variety of working modes, can be switched in real time; Easy to operate; Use 220V or 380V single-phase power supply for easy on-site power supply.
5, flexible configuration, strong expansion function. The resonant reactor adopts multi-mode, modular combination, can be string and combined to meet the test requirements of a variety of samples, and is more convenient for field use.
6, large screen touch LED LCD color screen and external mouse directly complete the setting of various parameters, test results can be saved, printed, uploaded, back check, etc.

1, excitation transformer 15kVA/4/8/16kV/0.4kV  1unit
    Rated capacity: 15kVA;
    Input voltage: 0 ~ 400V, single phase;
    Output voltage: 4/8/16kV
    Structure: dry type;
    Weight: about 58kg;
2, frequency conversion power supply 15kW/220/380V   1unit
    Rated output capacity: 15kW
    Working power supply: 220/380±10%V(single/three-phase), power frequency
    Output voltage: 0 ~ 400V, single phase,
    Rated input current: 37.5A
    Rated output current: 37.5A
    Voltage resolution: 0.01kV
    Voltage measurement accuracy: 1.5%
    Frequency adjustment range: 30 ~ 300Hz
    Frequency adjustment resolution: ≤0.1Hz
    Frequency stability: 0.1%
    During operation: continuous 60min at rated capacity
    Maximum component temperature ≤65K after continuous operation for 60 minutes at rated capacity;
    Noise level: ≤50dB