130
Start Time/Duration
Time Query method for LDC system See Start/Stop Time
method.
Surge
A transient wave of voltage, current, or power in an
electrical circuit.
Sync
Abbreviation for Synchronize or Synchronization
Synchrophasor
A phasor calculated from data samples using a standard
time signal as a reference for the measurement.
Synchronized phasors from remote sites have a defined
common phase relationship. See IEEE C37.118-2005
Standard for Synchrophasors for Power Systems, IEEE
Power Engineering Society.
T
TCP/IP
The Internet Protocol Suite, commonly known as TCP/IP, is
a four-layered set of communications protocols used for the
Internet and other similar networks. Two of the most
important protocols in the suite are the Transmission
Control Protocol (TCP) and the Internet Protocol (IP),
hence the common name.
Text/Data Only
An ASCII (q.v.) text format that can be sent to the Windows
Clipboard; these files have a .txt or .dat extension; they
can be viewed or printed by using a word processor.
THD
Acronym for Total Harmonic Distortion
TR#
Abbreviation for Trigger Number
U
UDP/IP
The Internet Protocol Suite, commonly known as TCP/IP
(q.v.), is a four-layered set of communications protocols
used for the Internet and other similar networks. Two of the
protocols in the suite are the User Diagram Protocol (UDP)
and the Internet Protocol (IP), hence the common name.
With UDP, computer applications can send messages
(datagrams). Datagrams may arrive out of order, appear
duplicated, or go missing without notice. Time sensitive
applications often use UDP because dropping of packets is
preferable to waiting for delayed packets.
URL
Acronym for Uniform Resource Locator. In computing, a
URL is a Uniform Resource Identifier (URI) that specifies
where an identified resource is available and the
mechanism for retrieving it. URL is often incorrectly used
as a synonym for URI. The best-known example of a URL
is the address of a web page on the World Wide Web, e.g.
http://www.example.com.
USB
Acronym for Universal Serial Bus. It is a specification for a
bus used to establish communication between devices and
a host controller, usually a personal computer (PC). USB is
a bit-serial bus in general use to connect peripherals such
as mice, keyboards, digital cameras, printers, scanners,
media players, flash drives, and external hard drives.
USI
Acronym for Utility Systems, Inc.
UTC
Acronym for Universal Time Code
V
Vac
Acronym for Volts AC.
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