Product Short Description
Product Introduction:
The Hydran M2 is a compact, permanently installed on-line monitoring device developed by GE for oil-immersed transformers. It continuously tracks dissolved fault gases and moisture in insulating oil to detect incipient internal faults at an early stage, providing real-time data to prevent unplanned outages and extend transformer service lifeGE Vernova. The Mark III version has upgraded sensor durability, electronic components, and power supply for RoHS compliance, enhanced reliability, and expanded compatibility with both mineral and ester-based (natural/synthetic) oils.
Description
Technical Specifications
- Gas Sensing (Hydrogen-only Sensor): Fuel cell type with gas-permeable membrane; range 25–2000 ppm (H₂ equivalent, v/v); accuracy ±10% of reading ±25 ppm (H₂ equivalent); response time 10 minutes (90% of step change); relative sensitivity to H₂ 100%.
- Gas Sensing (Composite Gas Sensor): Relative sensitivity—H₂: 100%, CO: 15±4%, C₂H₂: 8±2%, C₂H₄: 1.5±0.5%.
- Moisture Measurement: Thin-film capacitive sensor; range 0–100% RH (0–10,000 ppm); accuracy ±2% RH; repeatability ±2% RH.
- Power Supply: 90–132 Vac or 180–264 Vac universal switch-mode power supply, 47–63 Hz, max 650 VA.
- Enclosure: NEMA Type 4X (IP66), suitable for outdoor/harsh environments.
- Mechanical Mounting: 1.5” NPT male thread; optional adapters for 1”/2” female NPT valves.
- Operating Temperature: -40°C to +55°C.
- Self-Check: Automatic self-diagnostics every 15 days.
- Communication Protocols: RS485 (Modbus RTU), Modbus TCP, DNP3.0, IEC 61850; supports up to 4 input/output cards for SCADA/DCS integrationGE Vernova.
Functional Characteristics
- Continuous On-line Monitoring: 24/7 measurement of dissolved fault gases (H₂, CO, C₂H₂, C₂H₄) and moisture in oil for early fault detection.
- Dual Sensor Options: Selectable hydrogen-only or composite gas sensors to match monitoring needsGE Vernova.
- Transformer Mathematical Models: Computes health indices per IEEE/IEC standards (mineral oil) using sensor inputs for real-time condition assessmentGE Vernova.
- Dual Alarm Levels: Configurable local/remote alerts (alert/warning) for gas/moisture anomalies.
- Low Maintenance: No moving parts; field calibration not required; automatic self-checks ensure long-term reliability.
- Oil Compatibility: Works with mineral insulating oil and natural/synthetic ester-based oils.
- Data Integration: Compatible with GE Perception™ software for trending and historical analysis.
Application Scenarios
- Power Transformers: Transmission/distribution transformers in utility grids to avoid unplanned outages.
- Industrial Transformers: Oil-immersed transformers in manufacturing plants, refineries, and critical infrastructure.
- Renewable Energy Assets: Step-up/step-down transformers in wind/solar farms for grid stability.
- Ester-Oil Transformers: Newer low-flammability ester-oil units requiring specialized monitoring.
- Retrofit Installations: Upgrading existing transformers with on-line monitoring without major modifications.
- Remote/Unattended Sites: SCADA-connected operation in remote substations for centralized monitoring.
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