The HMCXZW series of on-site variable frequency AC Resonant Test Systems are based on the latest frequency converters to facilitate testing of long lengths of cable in the field with fixed core, variable frequency reactors. XLPE, GIS, motor stator, large-sized transformer and electric capacitor also can be tested.

1. Rated output voltage: based on different test objects， max up to 1000kV.
2. Output frequency: 20- 300Hz.
3. Waveform: pure sine wave, THD <1.0%.
4. Max. capacity: Max up to 20000kVA
5. Duty Cycle: Continuous working time 60 mins at full power output.
6. Frequency adjustment sensitivity: 0.1Hz, instability <0.05%.
7. Power Supply: 380/220V ± 15%/50Hz ± 5%.
8. Partial discharge level:Less than 5 pC, If the voltage is up to 600kV or Above, less than 10pC.

1. HMCXZW model available with 260 kV, 83 A
2. Frequency range 20 – 300 Hz
3. Pure sinusoidal waveform at the system output
4. Universally proven frequency converters
5. Standard 3 phase generator can feed the system
6. Front end components and control room are air-conditioned
7. System noise level ≤ 10 PC for on-site PD measurements
8. Models to match industry-standard voltages and currents
9. Integrated solution on one trailer
10. Multiple trailers can be used in series or in parallel configurations
11. Easy integration with existing fixed-gap reactors
12. System noise level ≤ 10 PC for on-site PD measurements
13. Models to match industry-standard voltages and currents
14. Integrated solution on one trailer
15. Multiple trailers can be used in series or in parallel configurations
16. Easy integration with existing fixed-gap reactors

For onsite cable testing, the variable frequency resonant test system is a mobile and easy to use solution based on the latest technology in frequency converters for testing up to 500 kV cable class. The HMCXZW series of on-site cable test systems are based on the latest frequency converters to facilitate testing of long lengths of cable in the field with fixed core, variable frequency reactors. These reactors are lighter and more powerful compared to variable inductance fixed frequency reactors. The system’s low noise level is optimized to allow partial discharge measurements with the PD, including PD site location along the length of the power cable.