
4.99
Date Code 20081022
Instruction Manual
SEL-787 Relay
Protection and Logic Functions
Front-Panel Settings (SET F Command)
=>>
SET F TERSE <Enter>
Front Panel
General Settings
DISPLY PTS ENABL (N,1-32) EDP := 4 ? > <Enter>
•
•
•
Target LED Set
TRIP LATCH T_LED (Y,N) T01LEDL := Y ? > <Enter>
Display Point Settings (maximum 60 characters):
(Boolean): Relay Word Bit Name, "Alias", "Set String", "Clear String"
(Analog) : Analog Quantity Name, "User Text and Formatting"
DISPLAY POINT DP01 (60 characters)
DP01 := RID,"{16}"
? IN101,"TRFR 1 HV BRKR:",CLOSED,OPEN <Enter>
DISPLAY POINT DP02 (60 characters)
DP02 := TID,"{16}"
? IN102,"TRFR 1 LV BRKR:",CLOSED,OPEN <Enter>
DISPLAY POINT DP03 (60 characters)
DP03 := IAV, "IAV CURR {5} A"
? END <Enter>
Save changes (Y,N)? Y <Enter>
Settings Saved
=>>
Figure 4.62
Display Point Settings
shows the display when both HV and LV breakers are open (both
shows the display when the HV
breaker is closed, and the LV breaker is open (IN101 asserted, but IN102 still
deasserted).
Figure 4.63
Front-Panel Display—Both HV and LV Breakers Open
Figure 4.64
Front-Panel Display—HV Breaker Closed, LV Breaker Open
Name String, Alias String, and Either Set String or Clear String Only
The following discusses omission of the Clear String; omission of the Set
String gives similar results. Omitting the Clear String causes the relay to only
show display points in the set state, using the
SET F
command as follows:
DP01 := RID, “{16}”
? IN101,"TRFR 1 HV BRKR:",CLOSED <Enter>
When the Relay Word bit IN101 deasserts, the relay removes the complete
line with the omitted Clear String (TRFR 1 HV BRKR). When both breakers
are closed, the relay has the set state information for both HV and LV
breakers, and the relay displays the information as shown in
.
When the HV breaker opens (LV breaker is still closed), the relay removes the
line containing the HV breaker information because the Clear String
information was omitted. Because the line containing the HV breaker
information is removed, the relay now displays the LV breaker information on
the top line, as shown in
Figure 4.65
Front-Panel Display—Both HV and LV Breakers Closed
TRFR 1 HV BRKR:= OPEN
TRFR 1 LV BRKR:= OPEN
TRFR 1 HV BRKR:= CLOSED
TRFR 1 LV BRKR:= OPEN
TRFR 1 HV BRKR:= CLOSED
TRFR 1 LV BRKR:= CLOSED
Содержание SEL-787
Страница 1: ...20081022 SEL 787 Transformer Protection Relay Instruction Manual PM787 01 NB ...
Страница 6: ...This page intentionally left blank ...
Страница 12: ...This page intentionally left blank ...
Страница 18: ...This page intentionally left blank ...
Страница 78: ...This page intentionally left blank ...
Страница 206: ...This page intentionally left blank ...
Страница 280: ...This page intentionally left blank ...
Страница 334: ...This page intentionally left blank ...
Страница 376: ...This page intentionally left blank ...
Страница 388: ...This page intentionally left blank ...
Страница 474: ...This page intentionally left blank ...
Страница 508: ...This page intentionally left blank ...
Страница 522: ...This page intentionally left blank ...