Relay Setup; Temp Setup; Calibration - GE Hydran M2-X Instruction Manual

Transformer gas monitoring system
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Hydran* M2-X Instruction Manual
The internal clock (see Section 2.3.4.2) provides the date and time unless the
battery (see Section 2.3.4.1) is disconnected.
3.2.3

Relay Setup

3.2.3.1 Relay Test
The Relay Test parameters are used to set the operation mode of each of the five
relays. The four operation modes are explained in Section 6.5.3.
3.2.3.2 Relay#1 Setup to Relay#4 Setup
These four options display all alarm conditions assigned to a relay. They are used
to assign new alarms, or to remove some, to each of the four alarm relays.
Individual alarm conditions can also be assigned to a relay through parameters
Alarm L-L Relay, Alarm Low Relay, Alarm Hi Relay and Alarm Hi-Hi Relay from
Alarms > Alarms Setup (see Section 3.3.2).
3.2.4

Temp Setup

The Temp. Setup parameters pertain to the operation of the Hydran M2-X's
heater plate and dynamic oil sampling system.
• Temp Set Point:
temperature of the heater plate). The default value is 35 °C.
• Temp SP Modulation: Temperature variation around the Temp Set Point. For
example: if Temp Set Point is set to the recommended temperature of 35 °C
(95 °F) and Temp SP Modulation to 10 °C (18 °F), the temperature varies
between 30 and 40 °C (86 and 104 °F).
• Temp Mod. Period: Modulation period of the temperature variation. If Temp
Mod. Period is set to 120 minutes (default value) in the above example; it
takes 120 minutes for the heater plate temperature to go from 35 to 40 to 35
to 30 to 35 °C (from 95 to 104 to 95 to 86 to 95 °F).
For more information on the dynamic oil sampling system, see Section 2.5.
3.2.5

Calibration

The Calibration function is used to calibrate the following analog inputs:
• The gas sensor signal.
• The moisture sensor signal.
• The thermistor in the sensor.
• The thermistors in the heater plate.
MA-029
Rev. 1.0, 30-Jul-18
Set point of the sensor temperature (average target
Page 43

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