NO Normally open
PCM600 Protection and Control IED Manager
PO Power output
PRP Parallel redundancy protocol
PTP Precision Time Protocol
QoS Quality of service
RIO600 Remote I/O unit
RJ-45 Galvanic connector type
RS-232 Serial interface standard
RS-485 Serial link according to EIA standard RS485
RSTP Rapid spanning tree protocol
RTD Resistance temperature detector
RTU Remote terminal unit
SAN Single attached node
Single-line diagram Simplified notation for representing a three-phase
power system. Instead of representing each of three
phases with a separate line or terminal, only one
conductor is represented.
SLD
Single-line diagram
SMV Sampled measured values
SNTP Simple Network Time Protocol
SO Signal output
TCS Trip-circuit supervision
VT Voltage transformer
WAN Wide area network
WHMI Web human-machine interface
1MRS758127 C Section 6
Glossary
RED615 107
Application Manual
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