Sel 421 - Figure 4.48 Reports File Structure

U.4.56
SEL-421 Relay User’s Guide Date Code 20090715
Basic Relay Operations
Operating the Relay Inputs and Outputs
=>FILE DIR REPORTS <Enter>
BRE_1.TXT R
BRE_2.TXT R
BRE_S1.TXT R
BRE_S2.TXT R
CBRE.TXT R
CHISTORY.TXT R
CSER.TXT R
HISTORY.TXT R
SER.TXT R
=>
Figure 4.48 Reports File Structure
Step 4. Download the SER report. Perform the steps necessary for your
terminal emulation program to receive a file.
Typically, these are the file transfer steps:
➢ Specify the destination file location in your computer
file storage system and file name.
➢ Select the transfer type as Y-Modem (if not already
enabled).
➢ Click Receive.
You will usually see a confirmation message when the file
transfer is complete.
Step 5. When the SER.TXT file has transferred successfully, use a
word-processing program to view the contents of the file.
You will see the SER records in a format similar to Figure 4.46.
The CSER.TXT file viewed with a word-processing program is
similar to the example in CSER, SER (Sequential Events
Recorder), in CSER on page A.3.35.
Operating the Relay Inputs and Outputs
The SEL-421 gives you great ability to perform control actions at bay and
substation locations via the relay control outputs. The control outputs close
and open circuit breakers, switch disconnects, and operate auxiliary station
equipment such as fans and lights. The relay reads data from the power system
and interfaces with external signals (contact closures and data) through the
control inputs. This subsection is an introduction to operating the SEL-421
control outputs and control inputs. For more information on connecting and
applying the control outputs and control inputs, see Section 2: Installation.
Control Output
The SEL-421 features Standard, Hybrid (High-Current Interrupting), and Fast
Hybrid (Fast High-Current Interrupting) control outputs that you can use to
control circuit breakers and other devices in an equipment bay or substation
control house. See Control Outputs on page U.2.7 for more information on
control outputs.
Pulsing a Control Output: Terminal
When first connecting the relay, or at any time that you want to test relay
control outputs, perform the following procedure. The procedure in the
following steps shows how to use a communications terminal to pulse the
NOTE: Transferring SER files (or CSER
files) with the FILE READ REPORTS SER.TXT
command, performs an SER CV command
as part of the transfer. SER CV clears the
SER information from the present port.
With the SER information cleared, there is
no data available for subsequent SER or
CSER transfers from the same port.
Courtesy of NationalSwitchgear.com