GE Intellix BMT 330 User Manual page 30

Parameter
System status enable
Primary voltage data
enable
Secondary voltage data
enable
PD Status Enable
Hysteresis on alarms
Alarm & trend sampling
period
Alarm & trend required
samples
Alarm Status operation
Once all the settings have been entered, press the "Write/Program" button to
load the settings into the Intellix™ BMT 330. It is advisable to update the
configuration file by pressing the "Save Settings To File" button.
Page 30
Intellix
Suggested Value
Checked
Checked
Checked if secondary set of bushings is monitored,
unchecked otherwise. Default is unchecked.
Checked
Default is 5%. Alarm triggered if parameter is above
threshold. Trigger armed as long as parameter >100-
Hysteresis on alarms % of the threshold value. Value is
advised to be 10% or less.
Default is 60s, allowable range is 0 to 3600s. Period at the
end of which the parameters are sampled and compared
against their respective alarm thresholds. If a consecutive
number of samples of a particular parameter are above its
alarm threshold is equal or greater than the Alarm & trend
required samples then the alarm trigger is armed (see
below). Once the trigger is armed it will not be disarmed
until this particular parameter is below its hysteresis-
corrected threshold (see above). If the Alarm Status is Auto
the alarm will switch off if the trigger is disarmed. If it is
Manual the alarm will be on independently of the trigger
status until it is acknowledge, at which time the alarm will
switch off if the trigger is unarmed.
Default=60, allowable range is 0 to 3600. Required number
of consecutive samples above the given threshold to arm
the alarm trigger. See above.
Choice of Auto or Manual (see above): Default is Auto.
Auto – the alarms switch off once the parameter goes
back into the acceptable range.
Manual – the alarm is maintained until it is manually
acknowledged, see the
Table 2: General Alarm Settings
BMT330UM v1.0
BMT 330 User Manual
™
"Alarm Statuses" tab on page 37
20-Jun-16