1. Overview

• In order to prevent failure of the transformer, it monitors the insulating oil dissolved hydrogen gas (H2), moisture (H2O), and oil temperature of the operating power transformer in real time.

2. System features

• Insulating Oil dissolved hydrogen gas (H2), moisture (H2O), Oil temperature measurement
• Hyrogen gas exraction method using a MEMBRANE (Permeable MEMBREANE) among abnormal gases.
• Monitor the rate of increase and decrease of power and hydrogen gas (H2) and display the status with external LEDs (Normal / Warning /Danger)
• Check of past data and Display Trends in previous occurrences of abnormalities (Touch LCD)
• Easy to install as it is a stand-alone type that can be installed independently
  

The equipment developed with pure domestic technology enables on-line monitoring of hydrogen gas generated by most internal abnormalities in transformers as main surveillance gas.

Continuously detects changes in hydrogen gas and water concentration to inform the inference of changes, and sets three levels of alarm levels: Normal, Caution, and above

It automatically acquires a certain amount of transformer insulation oil using an internal oil pump to measure hydrogen and water values, and circulates the measured oil back into the transformer.

One measurement is made after four stages of sequence, and each stroke includes a rest period (restart) to ensure that the remaining gas is filtered sufficiently during the previous measurement. The minimum detection time is 80 minutes, and the number of measurements per day can be adjusted depending on the break period.

1. Sensor

• H2O: 0 ~ 5,000ppm
• H2: 0 ~ 130ppm
• Oil Temperature : -40℃  ~ +120℃
• Tolerance: ±10% 
• Sensor Stabilization : 7days

2. Device

• SUS 304
• input Valve: 3/8"
• Output Valve: 3/8"
• Maintenance Valve: 3/8"
• Oil Supply Line: 1.5~11m
• Oil Circulation: Compulsion circulation system
• 4.3" Touch LCD Keypad(6 key)
• Power: AC 220V

3. Communication

• Protocol: Modbus, DNP 3.0
• Communication port: Ethernet 1 Port, USB 2 Port
• Output: 4~20mA (H2O, H2, Oil Temperature)
• Data Update: 8 times a day (possible change)
• Data storage: 3years (H2O, H2, Oil Temperature)
• Trend: Last 3 months