Phase monitor
RK 9872/802
Article number:
0070024
Type:
RK9872.11/802 3/N AC400/230V50/60HZ
Description
The space saving phase monitors RK 9872/802 and RK 9872/803 from the Varimeter family monitors under- and overvoltage as well as phase sequence in 3-phase systems. The response values are fixed. When connecting the measuring voltage to the inputs L1-L2-L3 and fault free system the relay switches on. After detecting undervoltage or overvoltage on one or more phases for longer than 30 ms, the relay drops out. The phase monitor measures the arithmetic mean value of the 3-phase voltages against N.
Technical specifications
| 1- / 3-phase: | 3 |
|---|---|
| Enclosure design: | Distribution board |
| Measuring range max.: | 400 V |
| Output contacts: | 1 C/O contact |
| Standard measuring range: | 3/N AC 400/230 V |
| Width: | 17,5 mm |
| Type: | RK 9872/802 |
Advantages / Customer benefits
- Reliability monitoring of 3-phase voltage systems on:
- Undervoltage
- Overvoltage - Fast fault location
- Preventive maintenance
- Space saving
- Very fast response time approx. 30 ms
Features
- According to IEC/EN 60255-1
- Detection of under-/overvoltage in 3-phase voltage systems
- Without separate auxiliary voltage
- LED-Indication for operation voltage and contact position
- De-energized on trip (output relay not activated in case of error)
- With fixed response value for undervoltage
- With fixed response value for overvoltage
- Width: 17.5 mm