DOLD 0034604: BA9837.12/020 30-90HZ UH AC240V Frequency Relay
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.
| Attribute | Value |
|---|---|
| Width: | 45 mm |
| Enclosure design: | Switch cabinet |
| Type: | BA 9837 |
| 1- / 3-phase: | 1 |
| Output Contacts: | 1 C/O contact, 2 C/O contacts |
| Measuring range max.: | 600 Hz |
| Standard measuring range: | 30 – 90 Hz |
| Operate Delay: | Yes |
| Auxiliary voltage required: | Yes |
