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NV021 - Manual - 08 - 2012
APPENDIX
8.4
APPENDIX A4 - CONNECTION DIAGRAMS
Note: Some typical connection diagram are shown.
All diagram must be considered just as example; they cannot be comprehensive for real applications.
For all diagrams the output contacts are shown in de-energized state for standard reference.
NV021-sch.ai
L1 L2 L3
One-phase grids
NV021
DI
Trip NV021 (K1)
G ~
-U
AUX
E1
THYBUS
RS232
FRONT PANEL
BF (K2)
RS485
F1
F2
F3
F4
F5
A+
B-
D1
ETHERNET
U
AUX
U
AUX
A1
≅
A2
B7
B8
VOL
TAGE INPUTS
B5
B6
B3
B4
B1
B2
U
L1
U
L2
U
L3
+U
AUX
A9
A10
A11
A12
A13
A14
A3
A4
A5
A6
A7
A8
K2
K3
K4
K5
K6
K1
OUTPUT RELA
YS
TRIP - NV021
SELF
(diagnostic)
Breaker failure (BF)
+U
AUX
-U
AUX
B1
B2
U
L1
L N
A19
A20
A21
A22
BINARY INPUTS
IN1
IN2
~