High-voltage reactor for HVDC systems – Type VNP
The VNP high-voltage reactor is designed based on the open-core concept that provides several operational advantages over conventional products. These include immunity to ferroresonance, explosion-proof construction, and robust resistance to transient overvoltages. With rated voltages ranging from 72.5 kV to 550 kV, these reactors are engineered for HVDC systems, primarily serving in transformer neutral grounding.
They effectively provide low impedance for DC current components and high impedance for AC components. Additional functionalities include compensating for significant capacitive loads and managing capacitive currents in testing configurations.
Additional design features:
- Custom-made design – tailored to specific customer requirements
- Simultaneous operation under AC and DC currents
- Partial discharge-free under AC test voltage
- Unique open-core magnetic design – immune to ferroresonance
- Robust insulation system designed to withstand very fast transient overvoltages
- Explosion-proof design, inherently resistant to internal electrical arcs
- Oil expansion effectively managed by a stainless-steel membrane
- Broad operational temperature range from -60 to +60 °C
- Available in biodegradable insulating fluid-filled configurations
- Proven reliability in seismically active environments
- High operational safety with minimal maintenance requirements