GE Hydran 201i Instruction Manual page 64

Transformer gas monitoring system
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Page 64
• To consult the four historic data files:
-
Events (recording at the time of events; example:
alarms)
-
Short Term (recording at fixed logging rate; example:
every 15 minutes)
-
Long Term (recording at fixed logging rates; example:
every 6 hours)
-
Service (recording at the time of the semimonthly,
automatic sensor test)
• To set the logging rate of these files.
• To clear the content of these files.
• To set the parameters of the conditions that trigger the
gas alarm: High and High-High gas level, hourly trend and
daily trend.
• To set the parameters of the conditions that trigger the
fail alarm: Low and Low-Low gas level, hourly trend and
daily trend.
• To read the current temperature of the Hydran 201
sensor.
• To set the parameters of the sensor temperature alarm.
• To adjust the set point of the sensor temperature.
• To set periods A and B.
• To read the actual set point, heating power and
temperature of the heating plate.
• To set the parameters of the dynamic oil sampling system.
• To read the value of the H201 sensor parameters.
• To test the H201 sensor operation.
• To read the battery voltage.
• To set the parameters of the battery alarm.
• To read the service data of the H201 sensor.
• To set the date.
• To set the time.
• To select the communication channel: Local USB and
Supervisory link for Hydran protocol, and Local USB
MODBUS and SupervLink MODBUS for Modbus protocol.
• To set the communications parameters.
• To set Modbus parity and address
Hydran* 201i Instruction Manual
Functions
MA-033
Rev. 14.0, 12-Nov-18

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