GE Hydran M2-X - Alarm Conditions

Page 107
Hydran* M2-X Instruction Manual
MA-029 Rev. 1.0, 30-Jul-18
The gas and moisture alarms provide an early warning of incipient faults in
transformers or any other oil-filled electrical equipment.
6.1.3 Alarm Conditions
An alarm is triggered when an alarm condition is detected. Each of the four alarm
types has its own set of alarm conditions. Table 6-1 lists the alarm conditions
monitored by the Hydran M2-X.
Source
Possible States
Gas level
—
—
High
High-High
Gas hourly trend
—
—
Gas daily trend
—
—
Moisture level
—
—
High
High-High
Moisture average
—
—
Relative humidity
—
—
Relative humidity
average
—
—
Analog input
a
Low-Low
Low
High
High-High
Sensor temperature
a
Low-Low
Low
High
High-High
Base plate
temperature
a
Low-Low
Low
High
High-High
Battery voltage
Low-Low
Low
—
—
Sensor and
connections
Cable
b
short
—
Replace
sensor now
Cable
b
open
Table 6-1: Alarm Conditions Monitored by the Hydran M2-X
a. The sensor temperature, the base plate temperature and each analog input could generate four alarm
conditions.
b. Either one of the following cables (or connectors in the connection link): sensor, sensor thermistor or
heater plate thermistor.