ABB Relion SMU615 Technical Manual page 259

1MRS758407 B
SMU615
Technical Manual
PCM600 Protection and Control IED Manager
PPS Pulse per second
PRP Parallel redundancy protocol
PTP Precision Time Protocol
RAM Random access memory
RJ-45 Galvanic connector type
RMS Root-mean-square (value)
ROM Read-only memory
RTC Real-time clock
SAN Single attached node
SBO Select-before-operate
SCADA Supervision, control and data acquisition
SCL XML-based substation description configuration
language defined by IEC 61850
SMT Signal Matrix tool in PCM600
SMU615 Substation merging unit
SMV Sampled measured values
SW Software
TCP/IP Transmission Control Protocol/Internet Protocol
TCS Trip-circuit supervision
TLV Type length value
UTC Coordinated universal time
VT Voltage transformer
WAN Wide area network
WHMI Web human-machine interface
Section 14
Glossary
253