Rockwell Automation 865 Differential Protection Relay User Manual
Page 53
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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
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