Mitsubishi Electric Melsec Q Series User Manual page 80

7 Setting and procedure for operation
7.5.3 How to wire
Follow the wiring diagram (Figure 7.5.3(1)-(a) ~ 7.5.3(2)-(c)) for external connection of QE81WH.
(1) In the case using 5A current sensor.
(a) Case of using EMU2-CT5
Figure 7.5.3(1)-(a) In the case of Three-phase 3-wire system
(b) Case of using EMU-CT5-A
Voltage transformer for gauge
Figure 7.5.3(1)-(b)
5A current sensor cable
EMU2-CB-Q5A
(with the voltage transformer for gauge/current transformer)
Power supply side
K
k
l
Ｌ
In the case of Single-phase 2-wire system
(with the voltage transformer for gauge/current transformer)
Power supply side
5A current sensor
EMU2-CT5
Voltage
transformer
for gauge
*For a low voltage circuit, grounding of the
secondary sides of VT (or CT) is not necessary.
1 2
EMU-CT5-A
5A current sensor
k K
l
Ｌ
Current transformer /5A
*For a low voltage circuit, grounding
of the secondary sides of VT (or CT)
is not necessary.
Load side
7 - 8
QE81WH
1 2 3
Current
k
K
transformer
/5A
L
ｌ
k K
l L
Load side