80
ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de
Voltage Monitoring Type SW
Voltage Monitor for 3-Phase Networks
Undervoltage
AC 230 V, +10...-15%, < 3 V
upon request
50/60 Hz
1 change-over contact (co)
Type 2 see "general technical information"
see "general technical information"
-20°C...+55°C
app. 10% UNenn
app. 1 s
Design K: 75 x 22 x 115 mm
IP 30 / IP 20
app.135 g
Rated supply voltage U
s
other Voltages
Frequency
Relay-Output
Type of Contact
Testing Conditions
Rated ambient Temp. Range
Hysteresis
Switching delay
Dimensions (H x W x D) mm
Protection Housing/Terminals
Weight
Technical Data
Undervoltage monitor for three-
phase networks without N for
monitoring on voltage failure.
The voltage is being measured
between phases and an articial
neutral point. At symmetrical
decrease of the voltage to approx.
50% of the nominal value or in
case of failure of a phase the
integrated relay (1 change-over
contact) releases with a delay of
approx. 1s. With engines running-
•
•
on on 2 phases, so much back voltage can be produced
that the failure of a phase may be not detected. The
SW31K is available for measuring voltages AC 400 V
and AC 690 V. As supply voltage in the standard version
AC 230 V is needed.
Application:
Monitoring of three-phase networks on loss of a
phase
monitoring of fuses
2015-12-14
SW31K
Part numbers:
S222272 AC 400 V
S222271 AC 690 V
Special Versions upon request
11220-1202-00
Unterspannungswächter
SW31K
S222272
AC 220-
240 V
50-60 Hz
< 2VA
A2A1 L2L1 L3 181615
U
≥1
UM 3 ~ 400 VAC
50%
.com
Made in Germany
2 L1
2 N
AC 230 V
50 Hz
SIGNAL ON
ALARM
T 4 A (gL)
1 L1
1 L3
1 L2
3 AC
400 V
