GIS SF₆ Gas Moisture & Density Online Condition Monitoring System

During long-term operation of GIS equipment, SF₆ gas may suffer elevated moisture levels or leakage, both of which impair insulating performance. When exposed to electric arcs, SF₆ decomposes into multiple toxic and corrosive byproduct gases, posing serious risks to the safe and stable operation of GIS.
A large number of GIS malfunctions are caused by degraded insulation. Hence, online monitoring of trace moisture and density of SF₆ gas is essential.
The SUN-IGuard-401 Series SF₆ Gas Moisture & Density Online Condition Monitoring System suits 110 kV to 750 kV high-voltage switchgear and GIS installations. It acquires real-time humidity, density and temperature measurements, featuring local display, remote data transmission, alarm triggering and trend analysis. The system provides solid data foundations for condition-based maintenance and smart grid construction.