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Phone：+86 15383419322Description
The GE HYDRAN-M2 is an advanced online dissolved gas analyzer (DGA) engineered by General Electric for real-time monitoring of power transformers, reactors, and tap changers. As a cornerstone of predictive maintenance in electrical asset management, this system continuously detects and quantifies key fault gases (H₂, CO, C₂H₂, C₂H₄, C₂H₆) dissolved in transformer oil, enabling early warning of thermal, electrical, and cellulose degradation issues. Utilizing GE’s patented electrochemical sensor technology, the GE HYDRAN-M2 delivers laboratory-grade accuracy without carrier gases or complex consumables, operating autonomously for 12+ months. Its rugged NEMA 4X/IP66 enclosure withstands extreme substation environments (-40°C to +85°C), while integrated Modbus and IEC 61850 protocols enable seamless integration with SCADA systems and GE’s Predix™ analytics platform. By identifying incipient faults 6–12 months before failure, the GE HYDRAN-M2 reduces forced outages by up to 60% and extends transformer lifespan through data-driven maintenance planning.
GE HYDRAN-M2
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | HYDRAN-M2 |
| Manufacturer | GE (General Electric) |
| Product Type | Online Dissolved Gas Analyzer |
| Detection Gases | H₂, CO, C₂H₂, C₂H₄, C₂H₆ (standard) |
| Measurement Range | H₂: 0–2000 ppm, C₂H₂: 0–50 ppm |
| Accuracy | ±10% or ±5 ppm (whichever is greater) |
| Sampling Interval | Configurable: 1–24 hours |
| Oil Flow Rate | 30–150 mL/min (self-regulating) |
| Operating Temperature | -40°C to +85°C (oil temp) |
| Enclosure Rating | NEMA 4X / IP66 |
| Communications | RS-485 Modbus RTU, Ethernet IEC 61850 |
| Power Supply | 85–265 VAC, 50/60 Hz or 88–300 VDC |
| Alarm Relays | 4 programmable SPDT (5 A @ 250 VAC) |
| Dimensions | 500 × 400 × 250 mm |
| Weight | 22 kg (dry) |
| Certifications | IEEE C57.104, IEC 60599, CE, UL** |
Main Features and Advantages
Electrochemical Sensing Technology: Patented solid-state sensors measure gases directly in oil without membranes or reagents, eliminating false positives from moisture/temperature fluctuations.
Autonomous Operation: Integrated oil pump, degassing membrane, and 12-month sensor life enable unmanned operation in remote substations.
Multi-Gas Trending: Simultaneously tracks 5+ gases with ppm-level sensitivity, calculating Duval Triangle/Pentagon fault codes in real time.
Cybersecurity Compliance: IEC 62443-3-3 hardened with role-based access, encrypted communications, and audit trails for grid-critical assets.
Edge Analytics: Onboard algorithms normalize data to IEEE C57.104 thresholds, generating severity-graded alerts (Warning/Alarm/Critical).
Retrofit-Ready Design: Flange-mounted to standard transformer valves (1.5″ NPT) with no oil pre-treatment required.
Application Field
The GE HYDRAN-M2 is deployed across transmission networks (>230 kV) for critical generator step-up (GSU) transformers, detecting partial discharges and overheating bushings. In renewable energy, it monitors offshore wind farm substation transformers exposed to salt corrosion. Industrial plants use it for arc furnace transformers to prevent coil rupture from overloading. Railway traction substations leverage its vibration-resistant design for locomotive power supplies, while HVDC converter stations rely on its C₂H₂ sensitivity to detect rectifier arcing. The system’s IP66 rating makes it ideal for desert mining operations with sand exposure and tropical utilities facing monsoon conditions.
Related Products
HYDRAN 201i: Portable DGA tester for field validation.
B30 Transformer Monitor: Comprehensive suite (DGA + BIL + moisture).
T60 Transformer Relay: Protection relay with DGA inputs.
Predix APM: Cloud analytics for fleet-wide DGA trend correlation.
Kelman Transfix: Competing DGA system for cross-verification.
DS200DCFBG1B: Gateway for Mark VIe-to-HYDRAN integration.
GE VIBROTIP QM: Vibration monitor for complementary mechanical diagnostics.
GE HYDRAN-M2
Installation and Maintenance
Pre-installation preparation:** Verify transformer valve compatibility (1.5″ NPT), drain 2L oil to purge sampling lines, and calibrate using GE’s G-Cal reference gas kit. Configure IEC 61850 MMS mapping before energizing.
Maintenance recommendations: Replace sensors every 12–18 months (or when H₂ sensitivity drops >15%). Clean inlet filter quarterly in high-particulate environments. Validate readings annually with lab DGA. If the GE HYDRAN-M2 reports “FLOW ERROR”, inspect oil viscosity or pump diaphragms.
