Products Description
Our online dga monitoring system automatically samples transformer oil, separates or analyzes the target gases, stores trends, and sends results to a supervisory platform. Variant selection determines the measured gas set and analytical method.
Technical Principle
The system circulates a small oil sample through the analysis unit and converts dissolved-gas response into concentration data. Depending on the selected model, gas separation and detection are completed by gas chromatography or laser photoacoustic spectroscopy. The controller performs automatic sampling, calibration, calculation, trend storage, alarm evaluation, and remote transmission.
Product Features
The online dga monitoring system provides automated gas trending without routine manual oil sampling. Two analytical platforms allow the gas set to follow transformer risk and budget. Long-term storage supports trend comparison and fault-development review. Multiple communication paths support integration at new or existing substations.
Operating Conditions
Install the product in a clean, ventilated location without corrosive gas, conductive dust, water ingress, severe vibration, or strong impact. Provide reliable protective grounding, maintain the required electrical clearances, and use the rated auxiliary power supply. Confirm ambient temperature, humidity, altitude, enclosure protection, cable routing, and communication conditions before production and installation.
Product Parameters
|
Parameter |
Details |
|
Chromatographic model |
MSDGA-I: H₂, CO, CO₂, CH₄, C₂H₆, C₂H₄, C₂H₂, and total hydrocarbons |
|
Photoacoustic variants |
MSDGA-2, MSDGA-5, and MSDGA-8 |
|
Minimum detection cycle |
2 h; maximum cycle is configurable |
|
Data retention |
≥10 years |
|
H₂ range / error |
2-20 μL/L: ±2 μL/L or ±30%; 20-2000 μL/L: ±30% |
|
C₂H₂ range / error |
0.5-5 μL/L: ±0.5 μL/L or ±30%; 5-1000 μL/L: ±30% |
|
Optional oil moisture |
0-100 ppm; ±2 ppm |
|
Photoacoustic power |
AC 220 V; <1 kW |
|
Photoacoustic environment |
-40°C to +55°C; 10-95% RH |
|
Communication |
RS485, RJ45, optical fiber, or 4G; IEC 61850 supported by the stated configuration |
Product Advantages
- The online dga monitoring system provides automated gas trending without routine manual oil sampling.
- Two analytical platforms allow the gas set to follow transformer risk and budget.
- Long-term storage supports trend comparison and fault-development review.
- Multiple communication paths support integration at new or existing substations.
Main Applications
The online dga monitoring system is used for oil-filled power transformers, reactors, and other oil-insulated equipment requiring dissolved-gas supervision.
It supports substations, power plants, renewable-energy stations, and industrial high-voltage systems.
The system is useful for early warning, trend analysis, and maintenance planning.
Components
|
Part |
Function |
|
Oil sampling and return circuit |
Moves a controlled oil sample through the analyzer. |
|
Gas extraction and analysis unit |
Separates or detects the selected dissolved gases. |
|
Control and data unit |
Schedules analysis, stores results, and generates alarms. |
|
Communication interface |
Transfers measurements to the station platform. |
FAQ
Q: What information is needed for model selection?
A: Confirm transformer oil volume, required gas channels, analysis cycle, installation distance, and communication protocol.
Q: What should be checked before installation?
A: Check oil inlet and return points, tubing route, cabinet foundation, power supply, and ambient conditions.
Q: How can the device or system be integrated?
A: RS485, Ethernet, optical-fiber, 4G, and IEC 61850 arrangements are selected by system configuration.
Q: Which options should be confirmed before production?
A: Choose the chromatographic or photoacoustic method, gas set, moisture option, core-current option, and cabinet form.
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