Page Appendix-1
IL17569
Effective June, 2001
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-5000
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.
CBEMA
This is defined as the ratio of the crest factor of a pure sine wave
to the actual application crest factor.
CH
Cutler-Hammer
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
Fundamental watts divided by fundamental volt-amperes. This definition is valid only for the
Power Factor
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
TM
Standard Cutler-Hammer Integrated Monitoring, Protection, And Control Communications
protocol definition for communication on the INCOM network.
Inom
Nominal Current for context rating of the FP-5000 (1 amp or 5 amp).
INCOM™
Cutler-Hammer INdustrial COMmunications network.
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