Eaton PXR10 - Page 24

3 Protection and measurement functions
3.2 Protection functions
20 PXR Electronic trip unit 01/21 MN012005EN www.eaton.com
Figure 4: Main LSIG tripping characteristic
L = long delay (= overload protection I
r
)
S = short delay (= short-time delayed short-circuit protection I
sd
)
I = instantaneous (= instantaneous short-circuit protection I
i
)
G = ground fault (= ground-fault protection I
g
)
￫
To evaluate the tripping characteristics, please refer to the
Eaton publication “Setting-specific representation of tripping
characteristics and competent assessment of their interaction”,
which is available for download on the Eaton website:
www.eaton.eu/ecm/groups/public/@pub/@europe/@electrical/documents/content/pct_998455_de.pdf
￫
The xSpider software is available on the Eaton website at
www.xspider.eaton.eu
t
sd
I
i
I t = ON
I
r
t
r
I
sd
2
I
t
I
t
I
g
t
g