Functions - ABB SACE Tmax XT5 Operation And Maintenance Manual

12 - Functions

Introduction This chapter includes the trip curves of the protections, which are shown in different point charts:
Function L (t = k/I
82 | © 2019 ABB | 1SDH002039A1002 - ECN000093027 - Rev. A
• The curves are illustrated considering the minimum and maximum values and of the parameters of each
protection.
• Protections with several curves (example: S protection), are shown in several graphs.
• The curves do not take account of the effects of special parameters, such as thermal memory and startups.
NOTE: it is advisable to always use the mathematical function in the summary table of the
protections to calculate the trip time (page 79)
)
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ABB | SACE Tmax XT
Protections | 12 - Functions