
Technical description
2 Protection functions
2.10 Synchrocheck (25)
VM55.EN005
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Table 2.10-1 Voltage measurement modes for synchrocheck
function
Voltage
input
Terminals
Signals in mode
“3LN+LLy/LNy”
U
a
X1:1-5
U
1
U
b
X1:2-5
U
2
U
c
X1:3-5
U
3
U
d
X1:4-5
U
12y
/U
1y
Number of synchrocheck stages 1
Availability of U
0
No
The following application examples show the correct connection
of the voltage inputs. In the Figure 2.10-3 and Figure 2.10-4,
the applications require only one stage (Voltage measuring
modes are “3LN+LLy/LNy ”).
Содержание VAMP 55
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