Frequency Relay
AA 9837

The frequency relay can be used especially in applications where the rotor frequency of a slip-ring motor must be measured. The rotor frequency is reciprocal proportional to the speed (see diagram rotor frequency at contercurrent braking). This behaviour allows to find speed depending switching values and can be used for start up and contercurrent braking of motors on cranes.

Features
. According IEC/EN 60255-1
. Detection of under- or overfrequency
. Adjustable response value
. Optionally 1 or 2 changeover contacts
. Width 45 mm

Technical specifications
Width: 45mm
Operate delay: Yes
Enclosure design: Switch cabinet
1- / 3-phase: 1
Standard measuring range: 30 - 90 Hz
Measuring range max.: 600 Hz
Output contacts: 1 C/O contact, 2 C/O contacts
Auxiliary voltage required: Yes
Type: AA 9837


Manufacturer: E. Dold & Söhne GmbH & Co. KG
Type: AA9837.12/010 30-90HZ UH AC230V
Art. No.: 0005663