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4.2.5 Connection of Directional Ground Module
The
directional ground module is connected to the
SZE21
and external circuits as
shown in Figure 12.
S2E21
Directional Ground Module
Terminal nos.
Input of zero-phase
current
(IO)
Input of zero-phase
VOl
tage
00)
D61
y-76-
&i%
Grounding [ D57
I
Main
circuit devices
I
(Power fuse(PF).
Contacter
(UC))
I I
Figure 12 Connection of Directional Ground
Module
-
35
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