Date Code 20020501 User’s Guide SEL-421/SEL-421-1 Relay
Section 3
UUser’s Guide
PC Software
The SEL-421 Relay includes a powerful relay settings, analysis, and
measurement tool to aid you in applying and using the relay; this tool is the
SEL-5030
ACSELERATOR
®
Software Program. The ACSELERATOR software
reduces engineering costs for relay settings, logic programming, and system
analysis. The
ACSELERATOR software makes it easier for you to do the
following:
➤ Create and manage relay settings
➢ Create settings for one or more SEL-421 Relays
➢ Store and retrieve settings with an IBM-compatible PC
(personal computer)
➢ Upload and download relay settings files to and from
SEL-421 Relays
➤ Analyze events
➢ Use the integrated waveform and harmonic analysis
tools
➤ Monitor real-time and relay-stored power system data
➢ Use the HMI (human machine interface) to view
metering, Relay Word bits, and circuit breaker monitor
data
➤ Control the relay
➢ Command relay operation through use of a GUI
(graphical user interface) environment
➢ Execute relay serial port commands in terminal mode
➤ Configure the serial port and passwords
SEL provides the
ACSELERATOR software for easier, more efficient
configuration of relay settings, metering, and control. However, you do not
have to use the
ACSELERATOR software to configure the SEL-421 Relay; you
can continue to use an ASCII terminal or a computer running terminal
emulation software to access all relay settings and metering. The
ACSELERATOR software gives you the advantages of rules-based settings
checks, SEL
OGIC
®
control equation Expression Builder, operator control and
metering HMI, and event analysis.
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