This user guide covers the installation, operation, and configuration of the ABB REF 542plus feeder protection and control unit for distribution automation.
The ABB REF 542plus is an integrated feeder protection and control unit designed for distribution network automation. It combines functions such as protection, measurement, control, status monitoring, diagnosis, and power quality analysis into a single device suitable for both Gas Insulated Switchgear (GIS) and Air Insulated Switchgear (AIS). The unit can be used for feeder, transformer, and motor protection and control, or independently for switchgear control. This manual is written in Chinese.
| Max protection function blocks | 24 |
|---|---|
| AC input channels | 8 |
| Waveform recording length (max) | 5 seconds |
| Sampling frequency | 1.2 kHz |
Yes, it can be used for transformer and motor protection and control.
A single REF 542plus unit can be configured with a maximum of 24 protection function blocks.
The fault recording module can record a maximum length of 5 seconds.
The sampling frequency for the analog input channels is 1.2 kHz.