Rockwell Automation 865 Differential Protection Relay - Manual (Page 53)

Protection Functions 3-9
865-UM001A-EN-P – July 2009
Figure 3.7 – Block Diagram of the Differential Overcurrent Stage ΔI>
The stage ΔI> can be configured to operate as shown in Figure 3.8.
This dual slope characteristic allows more differential current at
higher currents before tripping.
Figure 3.8 – Example of differential overcurrent characteristics