AC resonant test system with variable inductance, metal tank type with tap changer - WRU
- Tank-type high-voltage reactor unit.
- Suitable for testing medium-voltage (MV) and high-voltage (HV) cables.
- Integrated tap changer for optimized power performance.
- Voltage range: 43 – 350 kV.
- Current range: Below 50 A.
- Power range: Below 10,000 kVA.
The WRU AC resonant test systems with variable inductance use the resonance between the capacitive test object and the inductive HV reactor of the test system to generate a continuous sinusoidal high voltage. The natural resonance frequency of the test circuit is matched to the feed-in frequency by setting the variable inductance of the HV reactor. If the HV reactor and test object are designed to form a series resonant circuit, the result will be an ideal sinusoidal testing voltage. The oil-cooled HV reactor is installed in a closed steel tank.