Wuhan Goldhome Hipot Electrical Co., Ltd. is one of the leading manufacturers and suppliers of Online Monitoring System For Dissolved Gas Analysis in Transformer Oil in China. With abundant experience, our factory offer high quality customized products made in China with competitive price. Welcome to contact us for quotation.
Products Video
HM-DGA-6000 Online transformer oil chromatography monitoring system
Products Overview
HM-DGA-6000 Transformer Oil Dissolved Gas Online Monitoring System is designed for continuous monitoring and analysis of dissolved fault gases in transformer oil and other oil-immersed high-voltage equipment. It integrates automatic sampling, gas extraction, separation, detection, data analysis, automatic oil return, and real-time alarm functions.
The system continuously measures the concentration and growth rate of key dissolved gases, providing reliable data for transformer condition monitoring and early fault detection. Its intelligent diagnostic functions help identify abnormal operating conditions and potential insulation or thermal faults, supporting timely maintenance decisions and improving equipment reliability.
With automated operation, high-precision gas analysis, remote data communication, and intelligent fault diagnosis, the HM-DGA-6000 provides a reliable solution for online DGA monitoring, transformer condition assessment, and condition-based maintenance in power substations and other high-voltage applications.
Products features
- Online Gas Monitoring: Measures H₂, CO, CO₂, CH₄, C₂H₄, C₂H₆, C₂H₂, and optional H₂O.
- Real-Time DGA Analysis: Monitors gas concentrations and growth trends in transformer oil.
- Safe Gas Separation: Prevents contamination of transformer oil during analysis.
- High-Sensitivity Detection: Specialized micro-TCD improves hydrocarbon gas detection.
- Reliable Measurement: High-stability detection with an accuracy error of ±20%.
- Remote Data Communication: Supports standard network protocols for remote monitoring.
- High-Resolution Data Acquisition: 24-bit ADC with automatic calibration.
- 10-Year Data Storage: Provides historical data, reports, and trend charts.
- Wide Environmental Adaptability: Suitable for harsh temperature, humidity, and altitude conditions.
- Strong EMC Performance: Meets GB/T 17626 and IEC 61000 standards.
- Multi-Level Alarms: Provides real-time alarms with remote signal transmission.
Working principle
When the HM-DGA-6000 Online Dissolved Gas Monitor for Transformer Oil is in operation, it first uses the oil sampling assembly to circulate the oil, removing stagnant oil from the connecting pipes, and then performs precise digital oil metering. The elution and separation assembly rapidly separates the dissolved gases from the oil, transports them to the system's metering assembly, and injects the sample. Driven by the zero-grade air generation unit, the sample gas is separated by a chromatographic column and enters a high-precision gas detector; The data acquisition unit performs data conversion and collection, while the core processing unit stores, calculates, and analyzes the acquired data. The data is then uploaded to a data processing server via an Ethernet interface or directly via a communication protocol; alternatively, it can be processed and analyzed for faults by the backend monitoring and early warning software.
Products Parameter
| Products name | Dissolved Gas Analyzer for Transformer Oil |
| Products model | HM-DGA-6000 |
| Operating Temperature |
-40℃～＋70℃
|
| Relative humidity | 5–95%(no condensation or ice) |
| Atmospheric Pressure |
70kPa～110kPa
|
| Power Supply |
AC 220 V±10% , 50Hz
|
| Data Retention Period |
≥ 10 years
|
| Extreme Storage and Transportation Temperatures |
-40 ℃ ～＋ 80 ℃
|
| Protection Rating of the Enclosure | Outdoor Installation, IP56 |
| Dimensions |
Width 600 mm × Depth 600 mm × Height 1,150 mm |
| Total Weight |
125kg
|
| Monitored Components |
H₂, CO, CO₂, CH₄, C₂H₄, C₂H₆, C₂H₂, H₂O (optional), and other gas components, as well as trace moisture, relative growth rate, and absolute growth rate; trace moisture monitoring in oil is optional |
| Analytical and Diagnostic Functions | Analyzes and diagnoses monitoring data using the modified three-ratio method, David's triangle method, and the cube diagram method, and provides raw spectra. |
| Minimum Monitoring Interval | 60 minutes; user-configurable; default is 24 hours |
| Gas-Oil Separation Method | Atomized headspace degassing |
| Carrier Gas System | Fully automatic, maintenance-free carrier gas system |
| Monitored Gases | 1) H₂ 2 µL/L to 2,000 µL/L 2) CO 25 µL/L to 3,000 µL/L 3) CH₄ 0.5 µL/L to 600 µL/L 4) C₂H₄ 0.2–600 µL/L 0.2 µL/L 5) C₂H₆ 0.2–600 µL/L 0.2 µL/L 6) C₂H₂ 0.2–600 µL/L 0.2 µL/L 7) CO₂ 25–15,000 µL/L 25 µL/L 8) H₂O (optional) 1–800 µL/L 9) Total hydrocarbons 0.5–2,000 µL/L |
| Measurement Repeatability (Relative Standard Deviation | The deviation in monitoring results for the same oil sample under identical test conditions does not exceed ±5% (medium concentration) |
| Electrostatic Discharge Immunity | Level 4, ±8 kV to ±15 kV |
| Electrical Fast Transient Burst Immunity | Level 4, ±4 kV |
Surge (impact) immunity |
Level 4, ±4 kV |
| Seismic resistance | Sinusoidal seismic waves |
| Duration |
Three cycles, safety factor 1.67
Horizontal ground acceleration 0.4 g, vertical ground acceleration 0.2 g
Horizontal ground acceleration: 0.25 g; vertical ground acceleration: 0.125 g
Horizontal ground acceleration: 0.2 g; vertical ground acceleration: 0.1 g |
fAQ
Q: Can the system operate in harsh environments?
A: Yes. The system is designed for operation in cold, high-temperature, high-humidity, and high-altitude environments.
Q:Can the HM-DGA-6000 provide fault diagnosis?
A: Yes. It supports common DGA diagnostic methods, including the Three-Ratio Method, David Triangle Method, and Cube Diagram Method.
Q: Will data be lost?
A: The system uses an embedded processor control system that integrates multiple functions-including elution and separation, data acquisition, chromatographic analysis, concentration calculation, data alerts, and equipment status monitoring-into a single unit, ensuring that data loss does not occur.
Products FAQ
Q: For which types of power equipment is the HM-DGA-6000 suitable?
A: It is suitable for all oil-filled high-voltage equipment, including oil-immersed power transformers of various voltage ratings, electric arc furnace transformers, reactors, and oil-immersed current and voltage transformers.
Q:Does it require a high-pressure carrier gas cylinder? Is maintenance a hassle?
A: It comes standard with a high-efficiency Class 0 air generation system featuring a cylinder-free design, eliminating the need for frequent replacement of carrier gas cylinders.
Q: Does the equipment meet the standards for interference immunity, electromagnetic compatibility, lightning protection, and seismic resistance?
A: The unit's EMC compliance meets the GB/T 17626 and IEC 61000 standards:
Electrostatic discharge immunity: Level 4 (±8–±15 kV); Electrical fast transient immunity: Level 4 (±4 kV); Surge immunity: Level 4 (±4 kV). It is designed for stable operation in areas with seismic intensity up to 9 on the Mercalli scale and has an IP56 protection rating.
Products Details
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