The GE Hydran M2 represents the third-generation evolution of GE’s renowned transformer gas monitoring technology, designed for continuous dissolved gas analysis (DGA) in mineral oil-filled power equipment. As the flagship model in the Mark III series, this ruggedized monitor detects hydrogen (H₂), carbon monoxide (CO), and ethylene (C₂H₄) concentrations with 0.5ppm resolution, providing early warning of thermal faults and partial discharge activities. The Hydran M2 employs GE’s proprietary Thermal Conductivity Detector (TCD) array, achieving 98% measurement accuracy across -25°C to +65°C operating temperatures.
Integrated with GE’s Grid Solutions platform, this 19″ rack-mount unit supports both analog (4-20mA) and digital (IEC 60870-5-104) outputs for seamless SCADA integration. The GE Hydran M2 features automatic baseline correction and drift compensation, maintaining ±1% FS accuracy over 10-year operational lifespan. Its modular design allows field-upgradable sensor cartridges, reducing maintenance downtime by 60% compared to previous generations.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | Hydran M2 |
| Manufacturer | GE |
| Product Type | Transformer DGA Monitor |
| Detected Gases | H₂ (0-2000ppm), CO (0-5000ppm), C₂H₄ (0-1000ppm) |
| Measurement Principle | Thermal Conductivity Detection (TCD) |
| Response Time | <30 minutes (90% step change) |
| Accuracy | ±1% FS or ±2ppm |
| Communication | IEC 60870-5-104, Modbus TCP, DNP3 |
| Power Supply | 100-240VAC, 50/60Hz |
| Enclosure | NEMA 4X (IP66) |
| Operating Temp | -25°C to +65°C |
| Sensor Life | 5 years (field replaceable) |
| Dimensions | 482×132×400mm (19″ rack) |
| Weight | 15.8kg |
| Certifications | IEEE C57.104 Class III, IEC 60567 |
Key Features and Advantages:
Multi-gas diagnostics: The GE HYDRAN M2 uniquely correlates H₂/CO ratio to identify cellulose decomposition while monitoring C₂H₄ for oil overheating detection. Its dual-channel TCD configuration eliminates methane interference through differential measurement.
Smart calibration: Automatic zero-point adjustment compensates for seasonal temperature variations. The front-mounted LCD displays real-time gas trends with 15-minute interval logging to 16GB internal memory.
Cybersecurity hardened: Secure boot firmware and role-based access control meet NERC CIP-005 requirements. The isolated RS-485 port enables safe connection to legacy RTUs without network exposure.
Application Areas:
The GE HYDRAN M2 is essential for:
- Transmission networks: 230kV+ transformer banks in substations
- Generation plants: Hydrogen-cooled turbine step-up transformers
- Industrial complexes: Arc furnace transformers in steel mills
- Mining operations: Traction rectifiers in electric haulage systems
In oil & gas refineries, this monitor prevents catastrophic failures in critical process transformers by detecting CO surges from paper insulation degradation 8-12 months before traditional lab tests.
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