The SOQ relay is a solid state time overcurrent device intended for use in protecting rotating machinery against excessive heating due to prolonged unbalanced current. It is suitable for use with directly-cooled or indirectly-cooled turbine generators, salient pole generators, synchronous condensers, or any rotating machine having a known I22t limit.
Why ABB?
- Long product life
- Ease of application
- Reliable protection
- High-quality design