Sel 751A, Instruction Manual

Page: 210 / 640

4.118
SEL-751A Relay Instruction Manual Date Code 20100129
Protection and Logic Functions
Front-Panel Settings (SET F Command)
First enable enough display points for the analog measurements (e.g.
EDP = 5).
Figure 4.72 shows the settings to add the three transducer
measurements. (Use the > character to move to the next settings category).
=>>
SET F TERSE <Enter>
Front Panel
General Settings
DISPLY PTS ENABL (N,1-32) EDP := 4 ?
5 <Enter>
LOCAL BITS ENABL (N,1-32) ELB := 1 ?
> <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 := IN101,"TRFR 1 HV BRKR:",CLOSED,OPEN
?
<Enter>
DISPLAY POINT DP02 (60 characters)
DP02 := IN102,"TRFR 1 LV BRKR:",CLOSED,OPEN
?
<Enter>
DISPLAY POINT DP03 (60 characters)
DP03 := IAV, "IAV CURR {5} A"
?
AI301,"HOT SPOT TEMP" <Enter>
DISPLAY POINT DP04 (60 characters)
DP04 := IG_MAG, "GND CURR {5} %"
?
AI302,"OIL TEMPERATURE" <Enter>
DISPLAY POINT DP05 (60 characters)
DP05 := IA_MAG, "IA {7.1} A pri"
?
AI303,"WINDING TEMP" <Enter>
Save changes (Y,N)?
Y <Enter>
Settings Saved
=>>
Figure 4.72 Adding Temperature Measurement Display Points
Rotating Display
With more than two display points enabled, the relay scrolls through all
enabled display points, thereby forming a rotating display, as shown in
Figure 4.73 .
Figure 4.73 Rotating Display
To change the temperature units to more descriptive engineering units, enter
the desired units with the AI
xxx EU (e.g., AI302EU) setting.
TRFR 1 HV BRKR:=
TRFR 1 LV BRKR:=
Screen 1
HOT SPOT TEMP
xxx.xx degrees C
Screen 2
OIL TEMPERATURE
0.031 mA
Screen 3
WINDING TEMP
0.037 mA
Screen 4
TRFR 1 HV BRKR:=
TRFR 1 LV BRKR:=
Screen 1