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REU 523
Technical reference manual
Table Of Contents - ABB REU 523 Technical Reference Manual
Combined overvoltage and undervoltage relay
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Technical reference manual
(60 pages)
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Manual
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,
Manual
(10 pages)
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Table Of Contents
Introduction
5
Guarantee
6
Safety Information
7
Instructions
8
Technical Description
10
Inputs
11
Self-Supervision
12
Configuration
13
Protection
14
Undervoltage Unit
15
Positive-Phase-Sequence Protection
16
Time/Voltage Characteristics
17
Settings
20
Technical Data On Protection Functions
28
Indicator Leds And Alarm Indication Messages
29
Monitoring Of Demand Values
30
Control And Indication Of Disturbance Recorder Status
31
Triggering
32
External Serial Communication
33
Iec 60870-5-103 Remote Communication Protocol
34
Event Codes
37
Spa Bus Communication Protocol Parameters
39
Self-Supervision (Irf) System
46
Design Description
47
Serial Communication Connections
49
Technical Data
50
Ordering Information
54
References
55
Index
56
Abbreviations
59
Check Lists
60
Customer Feedback
63
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