Alarm Cancellation - GE Hydran M2-X Instruction Manual

Description
Low-Low battery voltage
Low battery voltage
a. Battery should be replaced.
b. Battery replacement should be planned for the next transformer maintenance.
c. Found in Alarms > Alarms Setup > Battery Alarm Setup
d. Found in Alarms > Alarms Setup > Sys. Fault Trigger
For explanations on the battery, see Section 2.3.4.1. For the specifications, see
Section 9.3.1. Should you need to replace the battery, see Appendix G.
6.3.2.4 Sensor Operation and Connections Alarm Conditions
A sensor test is automatically performed on the first and fifteenth days of each
month at midnight, and relevant parameters are recorded in the Service history file.
The test can also be forced manually (in Test > Sensor Test > H2 Sensor Test; see
Section 3.5.1), but this result is not recorded.
The parameters pertaining to the sensor operation and connections alarm
conditions are presented in Table 6-8 below.
Description
Replace Sensor Alarm
Cable b short
b
Cable open

6.4 Alarm Cancellation

Proceed as follows:
1. Find and solve the problem. For gas alarm conditions, the Hydran M2-X's
reading generally must be verified by sampling the transformer's oil and
performing a dissolved gas analysis (DGA).
2. Acknowledge the alarm using the Hydran M2-X's keypad (see Section 3.1.2.1)
or the Perception software (see the Perception Software Manual). The alarm
message should disappear from the Hydran M2-X's display.
3. If any, verify the value of the corresponding alarm delay. Ensure you wait
until this period of time is over.
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a
Priority
Average
Very Low
Table 6-7: Battery Voltage Alarm Conditions
a
Priority Alarm Set Point
Very high
Table 6-8: Sensor Operation and Connections Alarm Conditions
Hydran* M2-X Instruction Manual
Alarm Set Point c
Alarm Lo-Lo SP Battery L-Low Alr
Alarm Low SP Battery Low Alarm
c
Hyd. Rep.Sen.Alr
None Hyd. C.Short Alarm
Hyd. C.Open Alarm
Fault Trigger d
d
Fault Trigger
MA-029 Rev. 1.0, 30-Jul-18