Manual 37138C
ESDR 4T - Current Differential Protection Relay
Page 22/46
© Woodward
13
Display V
↓
/ Digit
↑
Display V
↓
/ Digit
↑
Display mode:
Display V
↓
-By pressing this button, the monitored values
of the restraint current I
s
and the differential current I
d
are
shown alternately in the top line of the display (the LEDs in-
dicate which is being currently displayed).
Configuration mode:
Digit
↑
- By pressing this button, the number above
the cursor is increased by one digit. The value cannot be con-
figured outside the permissible adjustment limits defined in
Appendix B: List of Parameters If the highest permissible
value is reached, the value will automatically revert to the
lowest permissible number.
14
Clear / Cursor
→
Clear / Cursor
→
Display mode:
Clear - The alarm text in the LC-display is deleted if this
button is pressed and held for 3 seconds and no alarm condi-
tion is present.
Configuration mode:
Cursor
→
- The cursor is moved one position to the
right by pressing this button. The cursor will automatically
move to the extreme left position of the value to be changed
when the cursor reaches the extreme right and the button is
pressed again.
LC-Display
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
5
LC-Display LC-Display
Messages and values are displayed depending on the selected mode.
In the configuration mode, the unit’s parameter values can be viewed and edited (see Chapter "Parameter"). In
Display mode, the measured values and alarms are displayed.
Top Line
displays I
s
and I
d
.
Bottom Line
Normal condition: blank or display of the harmonics (maximum values)
