Datasheet

ESG 6.12
Function description
Dimensions
Phase sequence monitoring
When all the phases are connected in the correct sequence and the
measured asymmetry is less than the fixed value, the output relays
switch into on-position (yellow LED illuminated). When the phase
sequence changes, the output relays switch into off-position (yellow
LED not illuminated).
Phase failure monitoring
When one of the three phases fails, the output relays switch into
off-position (yellow LED not illuminated).
Detection of reverse voltage (by means of evaluation of asym-
metry)
The output relays switch into off-position (yellow LED not illumina-
ted) when the asymmetry between the phase voltages exceeds the
fixed value of the asymmetry.
An asymmetry caused by the reverse voltage of a consumer (e.g. a
motor which continues to run on two phases only) does not effect
the disconnection.
Connection
103 mm
5 mm
22.5 mm
90 mm
LED SEQ
L1
L2 L3 L1 L2 L3
LED SEQ
L1
L2 L3
LED ASYM
L1
L2 L3
Asym.
N 11 21
L1 L2 L3
22 24
12 14
L1
L2
L3
N
12 14
11
22 24
21
PE
3-phase voltage monitoring relay
EMR DU21D