Transformer Oil DGA Tester
Transformer Oil DGA Tester
MT-GC818
The Transformer Oil DGA Tester is a specialized gas chromatography system designed for the analysis of dissolved gases in transformer insulating oil. The instrument is widely used to detect and quantify fault gases generated inside oil-filled electrical equipment.
Introduction
When transformers and other oil-filled electrical devices operate under electrical or thermal stress, the insulating oil may decompose and produce gases such as hydrogen (H₂), methane (CH₄), ethane (C₂H₆), ethylene (C₂H₄), acetylene (C₂H₂), carbon monoxide (CO), and carbon dioxide (CO₂). The concentration and generation rate of these gases are closely related to internal faults such as overheating, partial discharge, or electrical arcing.
By using gas chromatography technology, the DGA tester can accurately measure dissolved gas components in transformer oil, enabling engineers to diagnose potential faults and evaluate the operating condition of transformers.
The Transformer Oil DGA Tester system features multiple detectors, programmable temperature control, intelligent diagnostic functions, and high sensitivity detection, allowing rapid and reliable analysis of transformer oil gas components. The instrument is widely used in power utilities, transformer maintenance laboratories, electrical equipment manufacturers, and research institutions.
Typical Applications
The Transformer Oil DGA Tester is used for monitoring and diagnosing faults in oil-filled electrical equipment through dissolved gas analysis.
- Transformer condition monitoring
- Fault diagnosis of oil-filled power equipment
- Preventive maintenance of power transformers
- Transformer oil quality monitoring
- Research on insulation system degradation
Typical application environments include:
- Electric power utilities
- Power generation plants
- Transformer manufacturing companies
- High-voltage equipment testing laboratories
- Electrical insulation research institutes
Key Features
1. Large LCD Display with Real-Time Monitoring
The instrument is equipped with a 5.7-inch 320 × 240 dot matrix LCD screen that displays temperatures, operating parameters, and system status in real time, enabling convenient monitoring of analytical conditions.
2. Multi-Zone Independent Temperature Control
Six independent temperature control zones including injector, capillary injector, column oven, and detectors ensure precise temperature management for stable chromatographic separation.
3. Programmable Temperature Control
The system supports five-stage temperature programming, improving separation efficiency and analysis flexibility.
4. Intelligent Self-Diagnostic System
The instrument includes a wide-range self-diagnostic function that automatically identifies faults and displays diagnostic information, helping users quickly locate and resolve problems.
5. Safety Protection Functions
The analyzer includes over-temperature protection, carrier gas protection, and leak detection, automatically cutting off power and issuing alarms when abnormal conditions occur.
6. Intelligent Temperature Control System
A fuzzy logic controlled rear-door system dynamically adjusts airflow to maintain stable oven temperature even near ambient conditions.
7. Advanced Gas Flow Configuration
The gas flow system allows simultaneous operation of flame ionization detector (FID), thermal conductivity detector (TCD), and methane converter, providing high detection capability for transformer oil gas analysis.
8. Secondary Column Separation System
The system adopts a dual column separation design, improving analysis speed and reproducibility.
9. Factory Pre-Configuration
The instrument undergoes extensive aging and calibration before delivery, allowing users to operate the system with simple startup procedures.
Technical Specifications
|
Name |
MT-GC818 Transformer Oil DGA Tester |
|
Display |
5.7-inch LCD (320 × 240) |
|
Temperature Control Range |
Ambient +5°C – 400°C |
|
Temperature Increment |
0.1°C |
|
Temperature Control Accuracy |
Better than ±1°C |
|
Temperature Programming |
5-stage programmable |
|
Analysis Cycle |
< 15 minutes |
|
Carrier Gas |
High purity nitrogen (≥99.999%) |
|
FID Detection Limit |
mt ≤ 1 × 10⁻¹¹ g/s (benzene) |
|
FID Noise |
≤ 0.03 mV |
|
TCD Sensitivity |
≥ 10000 mV·ml/mg (benzene) |
|
TCD Noise |
≤ 0.03 mV |
Standards Compliance
The Transformer Oil DGA Tester is designed for dissolved gas analysis of insulating oils and can be applied in accordance with international standards including:
- ASTM D3612 – Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
- ASTM D3613 – Standard Practice for Sampling Insulating Liquids for Gas Analysis
- IEC 60567 – Oil-Filled Electrical Equipment – Sampling of Gases and Analysis of Free and Dissolved Gases
These standards are widely used in power transformer monitoring and insulation fault diagnostics.
Why Choose Our Transformer Oil DGA Tester
Accurate Dissolved Gas Detection
High sensitivity detectors enable precise measurement of key transformer fault gases.
Complete Gas Component Analysis
Simultaneous analysis of H₂, CH₄, C₂H₄, C₂H₆, C₂H₂, CO, and CO₂ using a single injection.
Advanced Chromatographic Technology
Dual column separation and multiple detectors ensure high analytical accuracy and repeatability.
Intelligent Safety Protection
Built-in safety systems protect the chromatographic column, detectors, and heating units.
Essential Equipment for Transformer MonitoringEssential Equipment for Transformer Monitoring
Widely used by power utilities and transformer laboratories to ensure safe and reliable operation of electrical equipment.