!PPENDIX
3*
6
# ' #
#
#
#
&LUSH MOUNTING CUBICLE INSTALLATION
#
#
#
3URFACE MOUNTING CASE
3*
#
#
, , ,
!
!
HIGHLY SENSITIVE EARTH FAULT DETECTION
NORMAL
EARTH FAULT
DETECTION
)
%
)
%%
L
K
+
,
L
K
+
,
)
,
)
,
)
,
.OTE
)F THE CURRENT POLARITY IS CHANGED UNDER ADDRESS IN MODEL
3*J JJJJ THIS CHANGES ALSO THE POLARITY OF THE CUR
RENT INPUTS )
%
AND )
%%
+
,
L
K
)MPORTANT #ABLE SHIELD MUST BE EARTHED
AT THE SIDE FACING THE CABLE
&IGURE " %XAMPLE FOR CONNECTIONS TO TWO DIFFERENT SUMMATION CTS SUITABLE FOR ALL SYSTEMS
#
#
#
#
#
#
3*
#
#
, , ,
!
!
)
%
)
%%
L
K
+
,
)
,
)
,
)
,
+
,
L
K
&LUSH MOUNTING CUBICLE INSTALLATION
3URFACE MOUNTING CASE
.OTE
)F THE CURRENT POLARITY IS CHANGED UNDER ADDRESS IN MOD
EL 3*J JJJJ THIS CHANGE ALSO THE POLARITY OF THE CUR
RENT INPUTS )
%
AND )
%%
)MPORTANT #ABLE SHIELD MUST BE EARTHED
AT THE SIDE FACING THE CABLE
&IGURE "
#ONNECTIONS TO THREE CURRENT TRANSFORMERS WITH STAR POINT RESIDUAL CURRENT
ADDITIONAL
SUMMATION CT FOR HIGHLY SENSITIVE EARTH FAULT DETECTION SUITABLE FOR ALL SYSTEMS
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. ElectricalPartManuals
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