Table of Contents
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REU 513
70
User's Guide
Abbreviations
• BI
Binary input
• CBFP
Circuit-breaker failure protection
• CPU
Central processing unit
• IDMT
Inverse definite minimum time characteristic
• IRF
Internal relay fault
• LED
Light-emitting diode
• PCB
Printed Circuit Board
• PO1, PO2
Power outputs
• SGB
Switchgroups for binary input
• SGF
Switchgroups for functions
• SGR
Switchgroups for output contacts
• SO1, SO2
Signal outputs
ABB Substation Automation
Products and Systems
1MRS750886-MUM
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