ZIEHL industrie
– elektronik GmbH + Co KG
Daimlerstr.13, 74523 Schwäbisch Hall, Germany
+ 49 791 504-0, info@ziehl.de, www.ziehl.de
Temperature Relays and MINIKA®
Mains Monitoring
Digital Panelmeters MINIPAN®
Switching Relays and Controls
Measuring Transducers
Grid- and Plant Protection
Operating manual STWA1
updated: 2018-12-10 Fu
STWA1
12050-0701-00
Page
1 / 4
www.ziehl.de
- Current transformer for AC current detection - accessories for current relay STW
Table of contents
1
Application and short description
Current transformers STWA1 are inductive working single-ended current transformers. Due to the applied
measuring principle, these current transformers are only suitable for alternating current. The current
transformer STWA1 is used together with ZIEHL current relay type STW for current detection and control of
extraction systems. The level of the current to be monitored is limited to 100 A continuously, 300 A for max.
10s. The electrical connection is made via the lead out black cable.
2
Overview of functions
•
Current transformer for alternating current detection
•
connection to current-relays type STW
•
no supply-voltage required
•
plug-in current transformer (Ø 11 mm)
•
length of the fixed connection cable 1000 mm
