6
1MRS 751107-MUM
Protection Relay
Operator’s Manual
REX 521
1.4.
Abbrevitations
1.5.
Related documents
Manuals for the REX 521
Parameter and event lists for the REX 521
Tool-specific manuals
CBFP
Circuit-breaker failure protection
CT
Current transformer
HMI
Human-machine interface
HSPO
High-speed power output
IRF
Internal relay fault
LCD
Liquid chrystal display
PO
Power output
RS
Rogowski sensor
SO
Signalling output
VD
Voltage divider
VT
Voltage transformer
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Содержание REX 521
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