The supply of electricity constitutes a vital part of society’s infrastructure and the demand for reliable distribution of high-quality electricity is ever increasing. With the Ground Fault Neutralizer (GFN) you will be able to meet these demands while still guaranteeing highest possible safety.
Earth faults (single phase to ground faults) are the dominating type of fault in an electrical network. Therefore it is of utmost importance that these faults are handled in a satisfactory way. By injecting an anti-phase current into the neutral, the GFN effectively cancels out the fault current. This interception is exceptionally fast and has no impact on the conveyance of payload over the faulty feeder. Thus, earth faults can be handled without customer outage.
As injury statistics clearly indicate, speed is the most essential aspect of protection. With a total response time of less than 60ms (three cycles) the GFN is substantially faster than traditional protection schemes, independent of the actual fault location. Instead of tripping the faulty feeder the GFN brings the fault current down to practically zero making it possible to maintain safe operation without disturbing power supply to customers. This unique feature can be guaranteed both during transient and sustained earth faults. Installed in the substation and connected to the transformer neutral, the GFN protects the entire network from one point.
The GFN was developed for safe earth fault protection but now also facilitates enhanced condition monitoring of your network. This is achieved by combining the functionality of the GFN with existing on line PD (partial discharge) equipment.
