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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de
Stromwandler Typ STWA1
für AC Stromerkennungsrelais
1 Unterteil
2 Tragschienenhalter (abnehmbar)
3 Anschlussklemme (steckbar)
4 Wandbefestigung (M4)
Current Transformer
STWA1 for monitoring
current yes/no
Current Transformer
STWA1H
for DIN-rail-mount or
screw-mount
A built-in LED lights up at currents > app. 2 A. Even
short current pulses are visible.
ZIEHL current monitor type STW or an external LED
can be conntected to the terminals. The built-in resistor
protects the LED from overload.
The STWA 1 H can also be used to visualize current-
ow in stand-alone mode, without connecting it to a
current monitor.
Weight: app. 90 g
Current-transformers STWA1H
can be xed on a 35 mm DIN-rail
or with 2 screws.
The electrical connection is made
via pluggable terminals.
The cables are led vertical through
the transformer (right angle to 35
mm-rail). The available diameter
is 11 mm.
The STWA1 current transformer is made to match the
STW current monitor. One current transformer is required
for each line being monitored. The STWA1 consists
of a climate-proven sealed-in coil with toroidal tape
core. The connection cables are permanently xed to
the transformer and are 1 m in length. The level of the
current to be monitored is limited to 100 A continously,
300 A for max. 10s.
In case of current of more than approx. 5 A, an LED
can be triggered directly via the STWA1 current trans-
former. Thus it's easy for users to visually monitor the
current conduction in a line. The LED is protected by
an anti-parallel diode or by its connection in series. A
protective resistor is necessary depending on the LED
used or the level of current being monitored.
Weight: app. 43 g
Controls for Suction Plants Type STW
2018-04-03
