Sel 411L - Checking Relay Status

P.10.10
SEL-411L Relay Protection Manual Date Code 20151029
Basic Relay Operations
Checking Relay Status
Using DISABLE is not recommended. Always set a unique, strong password
in the relay for each access level. Failure to do this can severely jeopardize the
security of your substation and the power system.
After you enter a new password, the relay pulses the Relay Word bit
SALARM for one second and responds
Set. The relay responds with the
message
Password Disabled if you used the DISABLE parameter.
If you forget a password, or encounter difficulty changing the default
passwords in Changing the Default Passwords: Terminal, you can temporarily
disable password verification. See Jumpers on page P.2.14 for information on
the password disable jumper PASSWORD.
Checking Relay Status
With continual self-testing, the relay monitors the internal operation of all
circuits to verify optimal performance of relay functions. If an internal circuit,
protection algorithm, or automation algorithm enters an out-of-tolerance
operating range, the relay reports a status warning. In the unlikely event that
an internal failure occurs, the relay reports a status failure. For more
information on relay status, see Relay Self-Tests on page P.11.38.
You can check relay status through a communications port by using a
terminal, terminal emulation computer program, or
ACSELERATOR QuickSet.
In addition, you can use the relay front panel to view status information.
Checking Relay
Status: Terminal
All examples described herein assumes that you have successfully established
communication with the relay (see Making an EIA-232 Serial Port
Connection). In addition, you must be familiar with relay access levels and
passwords (see Changing the Default Passwords: Terminal to change the
default access level passwords).
Step 1. Enter Access Level 1.
a. Using a communications terminal, type ACC <Enter>.
b. Type the Access Level 1 password and press <Enter>.
You will see the Access Level 1 => prompt.
Step 2. Type STA <Enter>. The relay returns a status terminal screen
similar to that in Figure 10.6.
=>STA <Enter>
Relay 1 Date: 03/15/2001 Time:07:02:50.776
Station A Serial Number: 000101234
FIDSEL-411L-R101-V0-Z001001-D20010315 CID0x9aed
Failures
No Failures
Warnings
No Warnings
SELOGIC Relay Programming Environment Errors
No Errors
Relay Enabled
=>
Figure 10.6 Relay Status