GL.2
SEL-421 Relay Date Code 20090715
Glossary
Access Level B—ANSI Standard Device Numbers
Access Level B
A relay command level you use for Access Level 1 functions plus circuit
breaker control and data.
Access Level O
A relay command level you use to access all Access Level 1 and Access Level
B (Breaker) functions plus Output, Alias, Global, Front Panel, Report, Port,
and DNP settings.
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 DNP settings.
ACSELERATOR Architect
®
SEL-5032 Software
ACSELERATOR Architect is an add-on to the ACSELERATOR Suite that utilizes
the IEC 61850 Substation Configuration Language to configure SEL IEDs.
ACSELERATOR 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 SEL-421 is presently using from among six
settings groups available in the relay.
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.
Analog Quantities
Variables represented by such fluctuating measurable quantities as
temperature, frequency, current, and voltage.
AND Operator
Logical AND. An operator in Boolean SELOGIC 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
25 Synchronism-check element
27 Undervoltage Element
32 Directional Elements
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
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
