Manual 37353A
MFR 13 Packages - Protection Relay
Page 60/91
© Woodward
NOTE
The subsequent screens are only visible if the parameter "
Auto-clearing Relays
" and the corre-
sponding protective function are enabled and the control unit is equipped with the protective function-
ality.
Release delay
xxxxxxxxx 00.00s
Release delay of the relays
0.02 to 99.98 s
The individual relays will reset if "Auto-clearing relays" has been enabled and the
monitored values have returned to the permissible limits plus / minus the hysteresis
(depending on monitoring) without interruption for the time specified in this pa-
rameter. If the monitored value exceeds / falls below the threshold limit, the delay
timer re-initiates its countdown. The following protective functions may have reset
delays configured.
Release delay for ...
Display indication
instead of
xxxxxxxx
Remark
Overvoltage Standard
Overvolt.
Level 1 and level 2
Undervoltage Standard
Und.volt
Level 1 and level 2
Asymmetry Standard
Asymmetry
Overfrequency Standard
Overfreq.
Level 1 and level 2
Underfrequency Standard
Underfrq
Level 1 and level 2
Independent time-overcurrent
Standard
Overcurr.
Levels 1, 2, and 3
Inverse time-overcurrent
Standard
Curr.-Inv
Inverse time-overcurrent with voltage restraint
Standard
Curr.-Inv
Ground fault, calculated
Standard
Earth f.
Level 1 and level 2
Overload Standard
Overload
Reverse-/reduced power
Standard
Rev.power
Unbalanced load
Standard
Unb. load
Reactive power inductive
Standard
react.ind.
Reactive power capacitive
Standard
react.cap.
Table 6-1: Release delay of the relays
Auto Acknowledgement of Messages
Auto-clearing
Display ON
Messages auto acknowledgment
ON/OFF
ON
................After the alarm condition is no longer detected, the message in the
display is deleted.
OFF
..............The alarm message remains in the display after the fault condition is
no longer detected until manually cleared. The subsequent screen of
this function is not displayed.
NOTE
The subsequent parameter “
Clearing display after
” is not visible if "
Auto-clearing Relays
"
is configured to "
OFF
".
Clearing display
after 00s
Clear displayed message delay
1 to 99 s
Alarm messages, which have been enabled, will be acknowledged after this config-
ured delay time expires. This delay will initiate once the measure value ex-
ceeds/falls below the threshold limit +/- the hysteresis