# \#sub-transient-reactance

**URL:** https://forum.plexim.com/tag/sub-transient-reactance/503.md

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## [Transient and sub-transient reactance of synchronous machine](https://forum.plexim.com/t/transient-and-sub-transient-reactance-of-synchronous-machine/860)

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**Author:** [@malepatisankar](https://forum.plexim.com/u/malepatisankar)\
**Replies:** 0\
**Last updated:** [September 18, 2020, 5:42am UTC](https://forum.plexim.com/t/transient-and-sub-transient-reactance-of-synchronous-machine/860 "2020-09-18T05:42:30Z")

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Hi, Sub-transient reactance and transient reactance will control the behavior of synchronous machine during short circuit faults. In the synchronous machine models available in PLECS library, the sub-transient reactance…