Sel 751A - Figure 4.72 Adding Temperature Measurement Display Points; Figure 4.73 Rotating Display

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 AIxxxEU (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