Sel SEL-451-5, Manual

Page: 9 / 32

Schweitzer Engineering Laboratories, Inc. SEL-451 Data Sheet
9
and the LOCAL Relay Word bit asserted, the Breaker
Control Screen in
Figure 10 (b) is displayed. After enter-
ing the screen in Figure 10 (b), the relay performs the
circuit breaker operations as outlined in the SEL-451-5
User’s Guide . If the LOCAL Relay Word bit is not
asserted when the
ENT
pushbutton is pressed, the screen
in Figure 10 (c) is displayed for three seconds, then the
bay control displays again the screen in Figure 10 (a).
Rack-Type Breakers Mosaics
The SEL-451 supports the display of rack-type (also
referred to as truck-type) circuit breakers. The rack-type
breakers have three positions: racked out, test, and
racked in. When in the test or racked-in positions, the
breaker can be displayed as open or closed. When racked
out, there is no breaker open/close display. The rack-type
breakers are a display-only functionality and do not
impact any circuit breaker control capabilities.
Status-Only Disconnects
The SEL-451 has the ability to designate a disconnect as
having control functionality or being status-only. When a
disconnect is designated as having control functionality,
the disconnect can be selected and controlled from the
relay front-panel HMI. When a disconnect is designated
as status-only, the disconnect is displayed in the one-line
diagram of the relay front-panel HMI, but it is not select-
able when navigating the front-panel HMI. Three-posi-
tion disconnects are also supported with control/display
functionality on a per position basis.
Rules-Based Settings Editor
QuickSet develops settings on- or offline. The system
automatically checks interrelated settings and highlights
out-of-range settings. Settings are transferred by using a
PC communications link with the SEL-451. The Quick-
Set interface supports Server 2008, Windows
®
7 and
Windows 8 operating systems, and can be used to open
COMTRADE files from SEL and other products. Con-
vert binary COMTRADE files to ASCII format for por-
tability and ease of use. View real-time phasors and
harmonic values.
Figure 10 Screens for Circuit Breaker Selection
Bus Labels
BAYNAME
BAYNAME
OPEN BREAKER
CLOSE BREAKER
OPEN
Bkrnam
PRESS TO ACTIVATE
Bay not in
LOCAL Control!
Cannot issue
controls.
Press Enter with breaker
highlighted
Breaker
Highlighted
(a) Bay Screen
(c) LOCAL Bit Not Asserted
(b) Breaker Control Screen
After three seconds,
re-display the previous screen
BUS 2
Dis 4
Bkr 1
Dis 3
Dis 1
Dis 2
BUS 1
BUS T
Bay Name
Disconnect
Switch Label
Disconnect
Switch Label
Disconnect
Switch Label
Analog
Quantities
Display
Breaker
Label
6 ANALOGS
I:99999.9 A
V:99999.9 KV
P:99999.9 MW
Q:99999.9 MV
F:60.000 HZ
ESC NAVIG
ESC
NAVIG