60
Installation 4. Wiring Diagram
1. Connect with the polarity of a measurement circuit carefully for correct measurement.
2. In case of DC auxiliary power, it should be wiring correctly because it has the polarity. In
case of AC auxiliary power, it does not have the polarity.
3. For a low voltage circuit, grounding of the secondary sides of VT and CT is not necessary.
4. Always earth the
terminal to the protective earth conductor. Otherwise there will be a
false operation.
Note
Three phase 4-wire type : Example of ME96NSR (in case with VT)
Three phase 4-wire type : Example of ME96NSR-MB (in case for direct input)
+C1
PN
P3
P2
P1
C3
+C3
C2
+C2
C1
T+
MA
NC
MB
NC
SLD
SLD
Ter
Tー
Protective
Earthing
Load
①
(+)
(ー)
RS485
(ModBus)
k
K
L
3
2
1
0
K
L
l
k
l
K
L
k
l
RS485
(ModBus)
+C1
PN
P3
P2
P1
C3
+C3
C2
+C2
C1
NC
MA
NC
MB
NC
NC
NC
NC
NC
u
v
u
v
u
v
U
V
U
V
U
V
k
K
L
3
2
1
Load
0
K
L
l
k
l
K
L
k
l
Protective
Earthing
①
(+)
(ー)
① Auxiliary power supply
100 to 240 VAC 100 to 240 VDC
※1 For a low voltage circuit, grounding of the
secondary sides of VT and CT in not necessary.
※2 Do not connect to NC terminal.