Hitachi Relion 650 Series Technical Manual page 451

1MRK 511 557-UEN Rev. A
TCS
TCP
TCP/IP
TICS
TPO
TPZ, TPY, TPX,
TPS
TRM
TRV
Tx
UAC
UCA
UDP/IP
UHV
UMT
Unicode
URCB
UTC
VT
WAN
WHMI
XML
Technical Manual
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.
Tissue implementation conformance statement, for IEC 61850
Three-pole operated (circuit breaker), i.e. one drive for three poles
Current transformer class according to IEC
Transformer module
Transient recovery voltage
Transmit line
User Account Control in Microsoft Windows operating systems
Utility Communication Architecture forum
User Datagram Protocol over Internet Protocol
Ultra high voltage
User management tool
Universal standard for text encoding
Unbuffered report control block
Coordinated Universal Time. A coordinated time scale, maintained by the
Bureau International des Poids et Mesures (BIPM), which forms the basis of a
coordinated dissemination of standard frequencies and time signals. UTC is
derived from International Atomic Time (TAI) by the addition of a whole number
of "leap seconds" to synchronize it with Universal Time 1 (UT1), thus allowing
for the eccentricity of the Earth's orbit, the rotational axis tilt (23.5 degrees), but
still showing the Earth's irregular rotation, on which UT1 is based. The
Coordinated Universal Time is expressed using a 24-hour clock, and uses the
Gregorian calendar. It is used for aeroplane and ship navigation, where it is also
sometimes known by the military name, "Zulu time." "Zulu" in the phonetic
alphabet stands for "Z", which stands for longitude zero.
Voltage transformer
Wide area network
Web human-machine interface
Extensible markup language
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Section 18
Glossary
445