P.10.24
SEL-411L Relay Protection Manual Date Code 20151029
Basic Relay Operations
Operating the Relay Inputs and Outputs
Figure 10.15 Password Entry Screen
Step 7. Input a password and pulse the output.
a. Enter a valid Access Level B, P, A, O, or 2 password.
(The front panel is always at Access Level 1, so you do
not enter the Access Level 1 password.)
Enter a valid password by using the navigation
pushbuttons to select, in sequence, the alphanumeric
characters that correspond to your password.
b. Press the ENT pushbutton at each password character.
(If you make a mistake, highlight the
BACKSPACE option
and press ENT to reenter a character or characters.)
c. After entering all password characters, press the Up
Arrow or Down Arrow pushbuttons to highlight
ACCEPT,
and press ENT.
The relay pulses the output, and you will see the
indicating device turn on for a second and then turn off.
Setting Outputs for
Tripping and Closing
To actuate power system circuit breakers, you must configure the control
outputs to operate the trip bus and close bus. The relay uses internal logic and
SEL
OGIC control equations to activate the control outputs.
Trip Output Signals
The relay is capable of single-pole tripping and three-pole tripping. There are
many Relay Word bits (e.g., TPA1, TPA2, RTA1, and 3PT) that you can
program to drive control outputs to trip circuit breakers. See Section 3:
Protection Functions for complete information on tripping equations and
settings. For target illumination at tripping, see Section 7: Front-Panel
Operations.
Close Output Signals
The relay features an automatic recloser for single circuit breaker and two
circuit breaker applications. The relay provides as many as two single-pole
and four three-pole reclose shots. See Section 4: Autoreclosing and
Synchronism-Check for more information.
Close the circuit breakers using Relay Word bits BK1CL and BK2CL for
Circuit Breaker 1 and Circuit Breaker 2, respectively.
A B C D E F G H
I J K L M N O P
Q R S T U V W X
Y Z a b c d e f
g h i j k l m n
o p q r s t u v
w x y z 0 1 2 3
4 5 6 7 8 9 _ .
ACCEPT BACKSPACE
PASSWORD REQUIRED
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