Instructions; Mmi Features; Front Panel - ABB REJ 527 Operator's Manual

REJ 527
3.
3.1.
3.1.1.
8
Directional or Non-Directional Earth-Fault Relay
Operator's Manual

Instructions

MMI features

Front panel

The front panel of the protection relay includes:
• an alphanumeric LCD display for 2 x 16 characters
• three indication LEDs (ready, start, trip)
• an MMI push-button section with four arrow buttons and buttons for Clear and
Enter
• an optically isolated serial communication port
READY START
ABB
1
2
Uaux = 110-240 Vac
Order No: REJ527A 411-BAA
Software No: 1MRS118015 Uaux = 48-220 Vdc
Serial No: ER000001 fn
3
)LJ  )URQW YLHZ RI WKH UHOD\
1. LCD display
2. Optical PC-connector
3. MMI push-button section
4. Indication LEDs:
• Left: Ready
• Centre: Start
• Right: Trip
REJ 527
TRIP
4
C
E
In = 0.2/1 A (Io)
Un = 100-120 V
= 50/60 Hz
1MRS 751055-MUM