Ground fault breaker in China in Sweden

What is a GFN breaker?

The GFN is an Active Earth Fault Protection System for distribution and transmission networks. It detects and locates Earth Faults with class leading detection and locating sensitivity. The GFN eliminates the Earth Fault current utilizing power electronics (RCC) faster than a breaker can trip the fault.

What is earth fault locator & grounding transformer?

The Earth Fault Locator supplies information on what feeder the earth fault has occurred (feeder indication). A Grounding Transformer is used to provide a physical neutral for a power transformer with a delta connected downside.

How does the Swedish neutral automatic tuning device work?

Pinpoint the Earth Fault location down to the faulty network section, even on very high impedance earth faults. The Swedish Neutral Automatic Tuning Device continuously monitors the network and tunes the Arc Suppression Coil to the correct value in order to reduce capacitive earth fault currents to a minimum.

What is a grounding transformer?

A Grounding Transformer is used to provide a physical neutral for a power transformer with a delta connected downside. The Grounding Transformers neutral point has low impedance and is suitable for different system groundings such as solid earthing, NER earthing (resistor) and resonance earthing (Arc Suppression Coils).