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© Siemens AG 2010. All Rights Reserved. Zone Selective Interlocking (ZSI) Functionality and Structure of ZSI For short circuit and ground fault as well.

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Presentation on theme: "© Siemens AG 2010. All Rights Reserved. Zone Selective Interlocking (ZSI) Functionality and Structure of ZSI For short circuit and ground fault as well."— Presentation transcript:

1 © Siemens AG 2010. All Rights Reserved. Zone Selective Interlocking (ZSI) Functionality and Structure of ZSI For short circuit and ground fault as well Application Guide

2 © Siemens AG 2010. All Rights Reserved. Industry SectorPage 2 ZSI t ZSI = 50 ms t sd = 200 ms t sd = 300 ms ZSI t ZSI = 50 ms t sd = 300 ms A)B) Example: ZSI function in the event of a short-circuit ZSI OUT ZSI IN ZSI OUT ZSI IN ZSI OUT ZSI

3 © Siemens AG 2010. All Rights Reserved. Industry SectorPage 3 ZSI t ZSI = 100 ms t g = 400 ms t g = 500 ms ZSI t ZSI = 100 ms t g = 500 ms A)B) Example: ZSI function in the event of a ground fault ZSI OUT ZSI IN ZSI OUT ZSI IN ZSI OUT ZSI

4 © Siemens AG 2010. All Rights Reserved. Industry SectorPage 4 t sd = 200 ms ZSI t ZSI = 50 ms t sd = 300 ms Example: ZSI function in the event of a short-circuit ZSI OUT ZSI IN ZSI OUT t sd = 100 ms ZSI Trip t sd = 0 ms t sd = 100 ms Trip With ZSI and without ZSI function in grading level 3 1 2 3

5 © Siemens AG 2010. All Rights Reserved. Rainer Huentemeier Productmanager I BT LV GC MCCB V2.0 2010 Thank you for your attention! Zone Selective Interlocking (ZSI)Zone Selective Interlocking (ZSI)

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