RTC Real-time clock
RTD Resistance temperature detector
SCL XML-based system configuration description language defined by IEC
61850
SHMI Switchgear HMI
SI Sensor input
Single-line dia-
gram
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
SSH Secure shell
STP Shielded twisted-pair
SW Software
TCP Transmission control protocol
TCP/IP Transmission control protocol/Internet protocol
TLS Transport layer security
UDP User datagram protocol
USB Universal serial bus
VT Voltage transformer
WAN Wide area network
WHMI Web human-machine interface
XRIO eXtended relay interface by OMICRON
Glossary 1MRS759118 D
160 REX640
Operation Manual