6
AUTOMATIC CONTROL UNIT, OMD100
Figure 2.2 Network line a - Network line b
Automatic control unit type OMD100 is designed for single and three-phase distribution systems in
diverse applications. OMD100 is supplied from Line 1 and Line 2 and can be used without external
power supply.
Figure 2.3 OMD100 has two sensors to monitor two three-phase power lines, both able to work
with single phase, too. Neutral has to be always connected.
A07253
I
II
LINE 1
L1 L2 NL3
1
4
3
2
LN1
L1
L2
N
L3
X11
KA00435
LINE 2
L1 L2 NL3
1
4
3
2
LN2
L1
L2
N
L3
X12
LINE 1
NL1
1
4
3
2
L1
N
X11
LINE 2
NL1
1
4
3
2
L1
N
X12
LN1
LN2
—
2.1 Typical applications
Network line a – Network line b
In case of loss of the primary power line, the OMD100 device manages the switching to a secondary
power line used as an emergency source.
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