ABB REX 521 Operator's Manual page 10
Protection relay
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Also See for REX 521:
- Technical reference manual, standard configurations (250 pages) ,
- Technical reference manual, general (76 pages) ,
- Operating manual (20 pages)
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REX 521
10
Protection Relay
Operator's Manual
1
2
3
4
READY
5
6
7
Fig. 3.1.-1 HMI front view
1. Alarm LEDs
2. LED indicator: Trip, CBFP
3. LED indicator: Start, Block
4. LED indicator: Ready, IRF, Test mode
5. LCD
6. Optical PC connector
7. Navigation buttons
8. Clear/Cancel
9. Enter
REX 521
START
TRIP
8
C
E
9
1MRS 751107-MUM
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