Electrical installation
18
BEKOMAT® 33U / 33U CO
Connection of the potential-free contact and of
the external test:
1. Selection of the suitable cable.
2. Connection to X2 and X3, as shown in the adja-
cent illustration.
3. The installation steps are the same as for the
power supply connection.
4. If the potential-free contact carries voltage that is
dangerous in the case of contact, a corresponding
separator must also be provided, as described
above.
5. When using the potential-free contacts and the
connection external test, sufficient clearance to
the other parts of the unit, or suitable insulation in
accordance with EN 60664-1 must be ensured.
6. When using a multiwire, common line for the con-
nection of the potential-free contact and the exter-
nal test, this line must be suitable for the highest
occurring voltage and the intended temperature
range with regard to its nominal ratings.
Pos: 57 / Beko Technische Dok um ent at ion/ I nst allat ion/ B EKO M AT/ K lem m enbele gung BM 32U/ 33 U @ 4\ m od_1354692952 721_29 01. docx @ 29108 @ @ 1
Terminal assignment supply voltage (operating voltage)
X 1
X 2
X 3
Power supply
• X 1.1 L/+
• X 1.2 N/-
L = Outer conductor
N = Neutral conductor
L
/+
N
/-
N
O
C
O
N
C
IN
1
G
N
D
p
h
as
e
n
e
u
tr
a
l
n
o
rm
a
lly
o
pe
n
co
m
m
o
n
n
o
rm
a
lly
cl
o
se
d
e
xt
e
rn
al
te
st
(I
N
1
)
G
N
D
1
.1
1
.2
2
.1
2
.2
2
.3
3
.1
3
.2
Terminal assignment low voltage (operating voltage)
X 1
X 2
X 3
Power supply
• X 1.1 L/+
• X 1.2 N/-
L
/+
N
/-
N
O
C
O
N
C
IN
1
G
N
D
p
o
w
e
r
p
o
w
e
r
n
o
rm
a
lly
o
pe
n
co
m
m
o
n
n
o
rm
a
lly
cl
o
se
d
e
xt
e
rn
al
te
st
(I
N
1
)
G
N
D
1
.1
1
.2
2
.1
2
.2
2
.3
3
.1
3
.2
