Detecting partial discharges in gas insulated switchgear is the primary purpose of the optical partial discharge monitoring system (OTEM). As a result, considerable damage up to the worst-case scenario, the so-called "blackout", can be avoided. The optical partial discharge monitoring system also eliminates the need for time-consuming localization efforts by precisely identifying the affected gas compartment within the switchgear. As such, our optical systems can be a valuable addition to your existing monitoring systems.

The OTEM partial discharge monitoring system reliably monitors the condition of your GIS / GIL and enables you to take preventive action. This allows affected components to be replaced or repaired at an early stage without causing a failure or major damage (e.g. due to the development of an arc fault) to the system.

OTEM is particularly suitable if your GIS / GIL already is equipped with light sensors. In this case, the switchgear can be upgraded cost-effectively and efficiently. For systems without a dedicated light sensor, the system can be installed on standard glass windows (e.g. available on the disconnectors) . This makes the system suitable for new and existing installations, particularly in the high-voltage sector.