ABB Relion SAM600-IO Operation Manual page 70

Section 9
Glossary
SC
SCL
SCS
SCADA
SCT
SDU
SELV circuit
SFP
SLM
SMA connector
SMT
SMS
SNTP
SOF
SPA
SRY
ST
Starpoint
SVC
TC
TCS
TCP
TCP/IP
TEF
TLS
TM
TNC connector
TP
TPZ, TPY, TPX, TPS
TRM
64
Switch or push button to close
Short circuit location
Station control system
Supervision, control and data acquisition
System configuration tool according to standard IEC 61850
Service data unit
Safety Extra-Low Voltage circuit type according to IEC60255-27
Small form-factor pluggable (abbreviation)
Optical Ethernet port (explanation)
Serial communication module.
Subminiature version A, A threaded connector with constant impedance.
Signal matrix tool within PCM600
Station monitoring system
Simple network time protocol – is used to synchronize computer clocks on
local area networks. This reduces the requirement to have accurate
hardware clocks in every embedded system in a network. Each embedded
node can instead synchronize with a remote clock, providing the required
accuracy.
Status of fault
Strömberg Protection Acquisition (SPA), a serial master/slave protocol for
point-to-point and ring communication.
Switch for CB ready condition
Switch or push button to trip
Neutral point of transformer or generator
Static VAr compensation
Trip coil
Trip circuit supervision
Transmission control protocol. The most common transport layer protocol
used on Ethernet and the Internet.
Transmission control protocol over Internet Protocol. The de facto standard
Ethernet protocols incorporated into 4.2BSD Unix. TCP/IP was developed
by DARPA for Internet working and encompasses both network layer and
transport layer protocols. While TCP and IP specify two protocols at specific
protocol layers, TCP/IP is often used to refer to the entire US Department of
Defense protocol suite based upon these, including Telnet, FTP, UDP and
RDP.
Time delayed earth-fault protection function
Transport Layer Security
Transmit (disturbance data)
Threaded Neill-Concelman, a threaded constant impedance version of a
BNC connector
Trip (recorded fault)
Current transformer class according to IEC
Transformer Module. This module transforms currents and voltages taken
from the process into levels suitable for further signal processing.
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1MRK 500 131-UEN Rev. C
Switchgear control unit SAM600-IO
Operation manual