6
1MRS 752179-MUM
Earth-Fault Relay
Operator’s Manual
REJ 521
• All settings can be modified with a personal computer
• HMI with an alphanumeric LCD and manoeuvring buttons
• IEC 60870-5-103 and SPA bus communication protocols
• Two normally open power output contacts
• Two change-over signal output contacts
• Output contact functions freely configurable for desired operation
• Optical PC-connector for two-way data communication (front)
• RS-485 connector (rear) for system communication
• Continuous self-supervision of electronics and software. At an internal relay fault
(IRF), all protection stages and outputs are blocked.
• User-selectable rated frequency 50/60 Hz
• User-selectable password protection for the HMI
• Display of primary current values
• Multi-language support
1.4. Guarantee
Please inquire the guarantee of your nearest ABB representative.
To Next Page
Loading...
Need help?
General
