Optimus™ DGA Monitor OPT100 - Vaisala Vietnam - STC Vietnam

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Optimus™ DGA Monitor OPT100

for Power Transformers Online Monitoring

Finally, the world’s first maintenance free DGA requiring no consumables of any kind.
• No carrier or calibration gases
• No columns
• No filter wheels

Overview

Vaisala Infrared Technology - a system built to work in any environment

With over 25 years of experience designing and manufacturing IR sensors in our own in-house cleanrooms, we´ve proven our technology to work in the most extreme tempreratures and environments on the planet.

Vacuum Gas Extraction

Unlike all other DGA's on the market that use a headspace gas measurement which only accounts for approximately 30% of the gas in oil, Vaisala's proprietary vacuum gas extraction method actually uses the oil level as a piston to drive roughly 95% of the dissolved gas out of the oil. What's more, this method is independent of oil temperature, age, or type.

Computer and Comms - Proven Electronics

The Vaisala purpose built computer has a long history of success in weather applications around the world. A browser based interface means there is never any software to install or maintain on your servers.
Utilizing non-proprietary software means the OPT100 is compatible with any monitoring system on the market. We understand that DGA is just one piece of the overall deployment.
Standard communication protocols include MODBUS and DNP3.

Modular Design

The system was designed with modularity in mind such that should a component ever need to be replaced, it could easily be swapped out in the field. No need to ever send the unit back for service. 

Power Supply - Separate High Voltage for Safety

The power supply is separated from the main cabinet to provide for a safe working environment. This cabinet also holds the three configurable relays.
This means any work on the main cabinet is in safe environment. This also reduces the complexity of any maintenance work that needs to be performed.  

Robust Mechanics - Built to last

Each and every component in the OPT100 was extensively tested to reach expected 15 years lifespan. We used only stainless steel and marine grade aluminum for our components. We selected the most reliable magnetic gear pump on the market as opposed to a traditional diaphragm pump that contains seals which can fear out.
Using a fully hermetically sealed system with no venting to atmosphere we've created a completely seasled system eliminating any external source of contamination that could cause measurement interference or long term drift.
"In the not-so-far future, online DGA monitors will be deployed as standard equipment on all large transformers. This will open the door to automated monitoring of the grid and ultimately the development of smart grids with computer-assisted decision making."
- Dr. Michel Duval, internationally renowned leader in the field of DGA, and inventor of "Duval's Triangles and Pentagons".

Vaisala DGA monitoring covers the following gases:

• Hydrogen H₂
• Carbon monoxide CO
• Carbon dioxide CO₂
• Methane CH₄
• Ethane C₂H₆
• Ethylene C₂H₄
• Acetylene C₂H₂

• Moisture H₂O

Dependable Data

• ​Sensor optics are protected from contamination
• Vacuum gas extraction is independent of oil temp, pressure, and oil type
• Unique autocalibration mechanism erases long-term drift
• IR sensor technology designed and optimized in Vaisala cleanrooms for exceptional measurement performance
• Spectral scanning gives better gas selectivity
• Excellent signal/noise ratio means no data averaging

Robust Construction

• Hermetically sealed structure means no leaks
• Monitor tolerates vacuum and pressure variations
• No consumables to replace or service
• IP66-rated and temperature controlled housing withstands harsh conditions
• Stainless steel and aluminum components and piping
• Magnetic gear pump and valves

Smart Design

• Ready-to-connect complete system can be installed in less than two hours
• Browser-based user interface means no additional software needed
• Continuous real-time monitoring with no averaging allows trending, analysis, and correlation to load patterns
• Self diagnostics enable self recovery after disturbances
• Mains power is isolated in separate enclosure for user safety
• Supplied with standard DNP3.0 and MODBUS communication protocols, thus allowing easy deployment within existing communications and SCADA networks​​​​