SITRAM Multisense 9 is a DGA (Dissolved Gas Analysis) which helps utilities to avoid transformer failures and mitigate risk for potential transformer failures.
The measurement is executed in two main steps: gas extraction (headspace technique) and gas detection (none-dispersive infrared radiation method).
Therefore the sensor indicates deviations and upcoming faults by analyzing the concentration of four dissolved key gases in transformer insulating oil, besides moisture.
This helps to predict and prevent eight major fault types:
Corona partial discharge, low & medium temperature faults by monitoring CH4
- Normal aging, thermal fault involving cellulose by monitoring CO2
- Exposure to atmosphere (air), leaky gasket (under vacuum), air breathing conservator, leaky bladder by monitoring O2
- low & medium temperature thermal faults, local over heating by monitoring
- High temperature thermal faults overheated oil by monitoring C2H4
- Partial discharge, thermal faults, power discharges, rust, galvanized parts, stainless steel, sunlight by Monitoring H2
Termal fault involving cellulose slowly from oil oxidation by monitoring CO
Arcing in oil by monitoring C2H2