PM 1001606 000 07
Device handbook CENTRAX CU3000-CU5000
22/106
Four wire system, unbalanced load, Open-Y
Direct connection
If current I
N
or voltage U
NE
does not need to be
measured, connection of IN resp. PE can be
omitted.
With current transformer
If voltage U
NE
does not need to be measured,
connection of PE can be omitted.
If current I
N
does not need to be measured, the
corresponding transformer can be omitted.
With current and voltage transformer
If current I
N
does not need to be measured, the
corresponding transformer can be omitted.
L1
L2
L3
N
I1
3
1
I2
4
I3
9
7
IN
PE
6
10
12
16
11
2
5
8
L1
L2
L3
N
5 A
(UL listed)
PE
N
L1
L2
L3
N
I1
3
1
I2
4
I3
9
7
IN
PE
6
10
12
16
11
2
5
8
L1
L2
L3
N
5 A
(UL listed)
PE
N
K
k
L
l
K
k
L
l
K
k
L
l
K
k
L
l
L1
L2
L3
N
I1
3
1
I2
4
I3
9
7
IN
PE
6
10
12
16
11
2
5
8
L1
L2
L3
N
5 A
(UL listed)
N
K
k
L
l
K
k
L
l
K
k
L
l
K
k
L
l
x
u
X
U
X
U
x
u
