Siemens 6SR41 series - Figure 6-15 Inverse Time-To-Trip Curves Left - Idle State, Right - Run State

Application and Operation
6.13 Input Side Monitoring and Protection
Product User Manual
Operating Instructions, Version AE 12/2009, A5E01454341C
139
Implementation
The follwing Figure shows the implementation of the Drive Loss fault circuit.
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Figure 6-14 Implementation of the Drive Loss Fault Circuit
Inverse Time Curve
The follwing Figure shows the inverse time-to-trip curves as a function of Drive Losses. Each
plot shows two curves – one for Idle State and the other for Run State (slightly longer time to
trip). For software versions 2.22 and lower, a fixed trip time of one second was used instead
of the curves shown next.
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Figure 6-15 Inverse Time-To-Trip Curves Left - Idle State, Right - Run State