GL.2
SEL-400 Series Relays
Instruction Manual
Date Code 20171006
Glossary
Access Level P
—
ANSI Standard Device Numbers
Access Level P
A relay command level you use to access all Access Level 1 and Access Level B
(Breaker) functions plus Protection, SEL
OGIC
, Alias, Global, Group, Breaker
Monitor, Front Panel, Report, Port, and DNP3 settings.
AC
SEL
ERATOR
Architect
SEL-5032 Software
AC
SEL
ERATOR
Architect is an add-on to the
AC
SEL
ERATOR
QuickSet Suite that
uses the IEC 61850 Substation Configuration Language to configure SEL IEDs.
AC
SEL
ERATOR
QuickSet
SEL-5030 Software
A Windows-based program that simplifies settings and provides analysis support.
ACSI
Abstract Communications Service Interface for the IEC 61850 protocol. Defines
a set of objects, a set of services to manipulate and access those objects, and a
base set of data types for describing objects.
Active Settings Group
The settings group that the relay is presently using from among six settings
groups available in the relay.
ADC
Analog to Digital Converter. A device that converts analog signals into digital
signals.
Admittance
The reciprocal of impedance, I/V.
Advanced Settings
Settings for customizing protection functions; these settings are hidden unless
you set EADVS := Y and EGADVS := Y.
Alias
An alternative name assigned to Relay Word bits, analog quantities, default
terminals, and bus-zone names.
Analog Quantities
Variables represented by such fluctuating measurable quantities as temperature,
frequency, current, and voltage.
AND Operator
Logical AND. An operator in Boolean SEL
OGIC
control equations that requires
fulfillment of conditions on both sides of the operator before the equation is true.
ANSI Standard
Device Numbers
A list of standard numbers used to represent electrical protection and control relays. The
standard device numbers used in this instruction manual include the following:
21
Distance element
24
Volts/Hertz Element
25
Synchronism-check element
27
Undervoltage Element
32
Directional Elements
49
Thermal Element
50
Overcurrent Element
51
Inverse-Time Overcurrent Element
52
AC Circuit Breaker
59
Overvoltage Element
67
Definite-Time Overcurrent
79
Recloser
86
Breaker Failure Lockout
89
Disconnect
Summary of Contents for SEL-421-4
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