ABB REX 521 Technical Reference Manual, General

58
1MRS 751108-MUM
Protection Relay
Technical Reference Manual, General
REX 521
8. Index
A
Alarm LEDs ............................................................................................. 41
Activating ........................................................................................... 41
Clearing a certain LED ....................................................................... 42
Reading actual state ............................................................................ 41
Testing ................................................................................................ 42
Alarms
Acknowledging .................................................................................. 41
Clearing, see Acknowledging
Enabling ............................................................................................. 41
Analogue channels ................................................................................... 19
Auxiliary power supplies ......................................................................... 44
Auxiliary voltage ................................................................................ 18, 44
Auxiliary voltage indication ..................................................................... 18
Auxiliary voltage supply .......................................................................... 18
C
Communication ........................................................................................ 46
Correction parameters and factors ............................................................ 21
Current sensor, see Rogowski coil
Current transformer values ....................................................................... 20
D
Digital inputs ...................................................................................... 22, 44
Filtering .............................................................................................. 22
Inversion ............................................................................................. 23
Technical data .................................................................................... 44
Testing ................................................................................................ 25
Voltage range ..................................................................................... 18
Display language ...................................................................................... 57
Display panel ............................................................................................ 40
E
Electromagnetic compatibility ................................................................. 46
Electromagnetic compatibility tests ......................................................... 46
Energizing inputs ..................................................................................... 44
Environmental conditions .................................................................. 44, 45
F
Fault indication ......................................................................................... 30
Fault indications ....................................................................................... 30
Actions ............................................................................................... 30
Codes .................................................................................................. 30

ABB REX 521 Specifications

General

Brand	ABB
Model	REX 521
Category	Other
Language	English