Asymmetry and undervoltage relays for 3(N)AC systems Product description The AUR381Z series relays are designed to monitor 3(N)AC systems for asymmetry, undervoltage and phase failure. External supply voltage is not required. The internal supply voltage is electrically isolated from the system. Special input transformers attenuate the interferences from the system. An integrated protective circuit is provided for use in systems with interferences. Typical applications • Monitoring of the power supply of motors or electrical installations • Monitoring of asymmetrically loaded systems AUR381Z Device...

Wiring diagram Asymmetry and undervoltage relay AUR381Z event of asymmetry, undervoltage and system failure. 3 - Adjustable response delay 4 - Adjustable response delay for under 5 - Adjustable response value for asymmetry 6 - Energy backup SP100, an additional means to delay the time for approximately 5 s in the event of complete system failure 7 - Alarm relay in N/C operation Ordering information

E& BENDER The Power in Electrical Safety6 P.O. Box 1161 • 35301 Gruenberg • Germany Londorfer Strasse 65 • 35305 Gruenberg • Germany Tel.: +49 6401 807-0 • Fax: +49 6401 807-259 E-Mail: [email protected] • www.bender.de TDB302003en / 07.2011 / pdf / Schw / © Bender GmbH & Co. KG, Germany - Subject to change! The specified standards take into account the version that was valid at the time of printing.