
ABB Substation Automation
Products and Systems
User’s Guide
REU 513
8
1MRS750886-MUM
A
Operator’s instructions
1.
Operation indicators
The function of the relay can be monitored with the help of three indication LEDs
on the relay front panel.
Fig. 1.-1 Operation indicators
Green READY indicator
•
Indicator off:
The auxiliary voltage is not available.
•
Lit indicator:
The relay is in normal operation, i.e. the CPU operates, no internal faults have
occurred, and auxiliary voltage is available to the relay.
•
Blinking indicator:
The internal self-supervision system has detected an internal relay fault (IRF).
The output contact of the self-supervision system operates.
C
START
READY
TRIP
Network Partner
REU 513
Order
No: REU513A 405-BAA
Software No: 1MRS118017
Serial
No: ER 000001
Uaux = 110-240 Vac
Uaux = 48-220 Vdc
fn
= 50/60 Hz
Un = 100-120 V
REU 513