GE Intellix BMT 330 User Manual page 32

Parameter
Rejected phase packet
Rejected PD packet
Low bushing current warning
High top oil temperature
Bushing current saturation
limit
Power system frequency
warning
Modbus comm. error
No Signal Warning
Bushing R Failure Warning
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 save the configuration
file by pressing the "Save Settings To File" button.
Page 32
Intellix
Suggested Value or Source of Data
Number of continuous failed comms attempts
with bushing data before triggering alarm.
Default=50.
Number of continuous failed comms attempts
with PD data before triggering alarm.
Default=250
Default 30%. Current % drop from expected
current before this service alarm is triggered.
Default value 90 deg C. Alarm threshold for top
oil temperature.
ADC raw count threshold above which the input
signal is no longer linear. Default=6700
Percentage change in nominal frequency which
triggers an alarm, default=2%
Number of continuous errors in the internal
RS485 line which triggers an alarm, default=50
Default = 10%. The percentage of I
which this alarm is triggered.
The percentage increase in bushing adaptor
sampling current from one sampling period to
the next that triggers an alarm. An increase in
current is indicative of a failure in one of the
resistors, either in the bushing adaptor or the
Intellix™ BMT 330 motherboard input. Default =
40%, to be set according the expected current
and the input's load.
Table 3: System Supervision Alarm Settings
BMT330UM v1.0
BMT 330 User Manual
™
ref
20-Jun-16
below