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PR521
User Manuals: ABB PR521 Feeder Protection Unit
Manuals and User Guides for ABB PR521 Feeder Protection Unit. We have
1
ABB PR521 Feeder Protection Unit manual available for free PDF download: Operator's Manual
ABB PR521 Operator's Manual (44 pages)
microprocessor based protection unit
Brand:
ABB
| Category:
Computer Hardware
| Size: 0.51 MB
Table of Contents
Italian
6
Table of Contents
6
Scelta del Valore DI Soglia
15
Scelta del Tempo DI Intervento
26
Esempio DI Impostazione
27
Pr521(50 - 51 - 51N)
28
Funzioni DI Segnalazione
29
Segnalazione a Distanza Mediante Relè
29
Segnalazione Ottica Mediante Led
29
English
29
Signalling Functions
29
Test Unit (TT2)
32
Time Current Curves
33
Definite Time-Delay Trip Curve (DT)
33
Normally Inverse Time-Delay Trip Curve (NI) for Overcurrent Protection
34
Very Inverse Time-Delay Trip Curve (VI) for Overcurrent Protection
35
Extremely Inverse Time-Delay Trip Curve (EI) for Over-Current Protection
36
Definite Time-Delay Trip Curve for Short
37
Definite Time-Delay Curve for Earth Fault
38
Definite Time-Delay Curve for Earth Fault
39
Wiring Diagrams
40
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