1. For tripping operation the HYDRAULIC OIL pressure must be 25.5 MPa and GIS gas pressure of the CB compartment should be 0.7 MPa . Breaker failure should be initiates If CB is failure to trip condition.
2. For closing operation the HYDRAULIC OIL pressure must be 27 MPa and GIS gas pressure of the CB compartment should be 0.725 MPa .
3. Normal condition Gas pressure CB 0.75 MPa, Gas pressure other compartment 0.6 MPa, Hydraulic Oil pressure 31.5 MPa
