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May Zone Selective Interlocking and Setting Groups A and B be utilized at the same time?

FA180048

28/11/2018

Issue
User wishes to know if Zone Selective Interlocking (ZSI) and Setting Groups A and B may be used concurrently

Product Line
Sepam series 20
Sepam series 40
Sepam series 80

Environment
Setup

Resolution
Sepam series 20:
Zone selective interlocking (ZSI) OR the swapping of the settings group based on an input may be used. ZSI and Setting Groups A and B may NOT be used concurrently.
When ZSI is selected in the relay, Setting Groups A and B are replaced by the Time-based protection function and the ZSI protection function.

Sepam series 40 / Sepam series 80
ZSI and Setting Groups A and B may be used concurrently