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IB02602004E
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Instructional Literature
Effective: May 2008
Page
207
Instructions for the FP-6000 Protective Relay
13 Appendix
13.1 Glossary
The following acronyms, abbreviations, and definitions are used throughout this document.
Algorithms
A set of rules or equations by which a value is calculated or a relay strategy is implemented by the
FP-6000 processor.
ADC
Analog-to-Digital Converter.
ADT
Adjustable Definite Time is the time value provided by the user as fixed reset delay independent of
current.
Analog Signal
Currents and voltages are analog signals.
Apparent Power Factor
Real power (watts) divided by volt-amperes (using the true rms values).
ASCII
American Standard Code for Information Interchange. Code with one byte per character used for
alphanumerics.
AWG
American Wire Gauge. Standard wire-cross section area.
BFI
External Breaker Fault Initiation.
Bit
Binary digit either 1 or 0. The smallest unit of information handled by a computer.
CH
Eaton.
Click
To quickly press and release the mouse button without moving the mouse.
COM1
Serial communication port 1 on a PC.
COM2
Serial communication port 2 on a PC.
Crest Factor
The crest factor is the ratio of the peak value to the rms value. It is equal to 1.414 for a pure sine wave.
CT
Current Transformer.
DAS
Data Acquisition System.
Digital Signal
Digital inputs, such as on or off switches.
Displacement Power
Factor
Fundamental watts divided by fundamental volt-amperes. This definition is valid only for the system
fundamental operating frequency.
Double-Click
To quickly press and release the mouse button twice on a PC.
Drag
To press and hold down the mouse button while you move the mouse on a PC.
FSK
Frequency Shift Keying is encoding typically used by a MODEM.
HMI
Human Machine Interface is also called MMI or Man Machine Interface.
Ia, Ib, Ic
Phase currents for phases a, b, and c respectively.
Icon
A picture on a computer screen representing an application.
IMPACC
Standard Eaton Integrated Monitoring, Protection, And Control Communications protocol definition for
communication on the INCOM network
Inom
Nominal Current for context rating of the FP-6000 (1 ampere or 5 ampere).
IP Address
A 32-bit number containing both a subnet address and a host address that identify a device in a network.
IP Address
A 32-bit number containing both a subnet address and a host address that identify a device in a network.
IR
Residual ground current calculated for the three phases, Ia + Ib +Ic, is a calculated valuenot measured
directly. It will be different on a 4-wire system.
IOC
Instantaneous Over Current protective function. The IOC functions have an optional time delay for
coordination with other relays.
IX
Current measured by a fourth system current transformer. This could be a physical ground measurement
from a residual current connection of the phase CTs.
LAN
Local Area Network.
Left Mouse Button
The primary mouse button, unless you have configured your mouse differently. When instructed to click on
an item, point to it and press the left mouse button.
List Box
A box on a pop-up screen that displays information, allowing you to scroll through or select its contents.
Modbus protocol
A popular industrial communication protocol.
MODEM
Modulator/Demodulator – encodes and decodes data stream, typically for transmission over telephone
lines.
Mouse
A hand-held pointer that attaches to your computer. The mouse displays on the computer screen as an
arrow. By moving the mouse and clicking the mouse buttons, you can perform and select various
operations.
PC
Personal Computer based upon the Intel™ processor family.