ABB Relion 670 series, Руководство по установке

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ST Switch or push button to trip
Starpoint Neutral point of transformer or generator
SVC Static VAr compensation
TC Trip coil
TCS Trip circuit supervision
TCP Transmission control protocol. The most common
transport layer protocol used on Ethernet and the Internet.
TCP/IP 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.
TEF Time delayed earth-fault protection function
TLS Transport Layer Security
TM Transmit (disturbance data)
TNC connector Threaded Neill-Concelman, a threaded constant
impedance version of a BNC connector
TP Trip (recorded fault)
TPZ, TPY, TPX, TPS Current transformer class according to IEC
TRM Transformer Module. This module transforms currents
and voltages taken from the process into levels suitable
for further signal processing.
TYP Type identification
UMT User management tool
Underreach A term used to describe how the relay behaves during a
fault condition. For example, a distance relay is
underreaching when the impedance presented to it is
greater than the apparent impedance to the fault applied to
the balance point, that is, the set reach. The relay does not
“see” the fault but perhaps it should have seen it. See also
Overreach.
UTC 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
Section 10
1MRK 514 026-UEN B
Glossary
102 670 series 2.2 IEC
Installation manual