Asymmetry Relay
AK 9840

The asymmetry relais AK 9840 of the VARIMETER series monitors voltage asymmetry, under voltage, phase failure as well as incorrect phase sequence at three-phase mains. The measurement is very simple and can be carried out without much wiring effort, as no separate auxiliary voltage is required. Early detection of impending failtures and preventive maintenance prevent costly damage and as a user you benefit from the operational safety and high availability of your system.

Features
. According to IEC/EN 60255-1
. For nominal voltages from 3 AC 110 up to 690 V
. Detection of
- Voltage asymmetry
- Incorrect phase sequence
- Phase failure
- Undervoltage
. Voltage feedback recognition
. Also suitable for harmonic industrial mains
. Closed circuit operation
. Contact position indication
. With adjustable delay
. 2 C/O contacts
. Width: 75 mm

Technical specifications
Width: 70mm
Operate delay: Yes
Enclosure design: Switch cabinet
1- / 3-phase: 3
Standard measuring range: 3 AC 400 V
Measuring range max.: 3 AC 690 V
Output contacts: 2 C/O contacts
Type: AK 9840


Manufacturer: E. Dold & Söhne GmbH & Co. KG
Type: AK9840.82 3AC50/60HZ 220V
Art. No.: 0017934