
18/89 Device handbook A
PLUS
with / without LED display
,
157
679-19, 04/2016
Three wire system, balanced load, current measurement via L1
3L.b
Direct connection
L1
L2
L3
N
I1
I2
I3
l
l
l
l
k
k
k
A
PLUS
L1
L2
L3
With current and voltage transformer
L1
L2
L3
N
I1
I2
I3
l
l
l
l
k
k
k
A
PLUS
L1
K
k
L
l
L2
L3
U
u
V
v
U
u
V
v
With current transformer
L1
L2
L3
N
I1
I2
I3
l
l
l
l
k
k
k
A
PLUS
L1
K
k
L
l
L2
L3
In case of current measurement via L2 or L3 connect
voltages according to the following table:
Current
Terminals
L1
L2
L3
L2
I1-k
I1-l
L2
L3
L1
L3
I1-k
I1-l
L3
L1
L2
By rotating the voltage connections the
measurements U12, U23 and U31 will be
assigned interchanged !
Four wire system, balanced load, current measurement via L1
4L.b
Direct connection
L1
L2
L3
N
I1
I2
I3
l
l
l
l
k
k
k
A
PLUS
L1
N
L2
L3
With current and voltage transformer
L1
L2
L3
N
I1
I2
I3
l
l
l
l
k
k
k
A
PLUS
L1
N
K
k
L
l
U
u
V
v
L2
L3
With current transformer
L1
L2
L3
N
I1
I2
I3
l
l
l
l
k
k
k
A
PLUS
L1
N
K
k
L
l
L2
L3
In case of current measurement via L2 or L3 connect
voltages according to the following table:
Current
Terminals
L1
N
L2
I1-k
I1-l
L2
N
L3
I1-k
I1-l
L3
N