Users Manual
Table Of Contents
- 1 Introduction
- 2 Description
Description
2.3 Protection system
3WA Air Circuit Breakers
48 Equipment Manual, 05/2021, 92310000002-03
SIMARIS curves
The Siemens software tool SIMARIS curves can be used to display the time-current
characteristic for one or more devices.
For more information on SIMARIS curves, refer to the Internet
(https://www.siemens.com/simaris
).
2.3.5 Description of the protective functions
2.3.5.1 General description
Depending on the electronic trip unit and the options selected, the following protective
functions are available:
• Long time LT
• Short time ST
• Instantaneous short-circuit protection INST
• Neutral protection N
• Ground-fault alarm
• Ground-fault protection GF
• Ground-fault protection GF Hi-Z