Figure 3-14 Sensitivity For Single Phase Fault With Binary Output; Figure 3-15 Sensitivity For Single Phase Fault With Pulse Output - Siemens 7SR45 Argus User Manual

Chapter 1 - 7SR45 Description of Operation
The sensitivity of 7SR45 Argus Relay is 0.20xIn (minimum phase current) in single phase or 0.10xIn (minimum
phase current) in three phase. This minimum phase current is necessary for the healthy functioning of the relay.
The PROTECTION HEALTHY and TRIP READY LEDs indicates the healthiness of the relay.
The following graphs show the sensitivity of the relay and the corresponding operating time for the different
start up currents.
Figure 3-14 Sensitivity for Single Phase Fault with Binary Output
Figure 3-15 Sensitivity for Single Phase Fault with Pulse Output
NOTE:
The multi-phase current will improve the sensitivity.
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