GE Hydran M2 Online Dissolved Gas and Moisture in Oil Monitor

Key Features:

• Provides continuous online monitoring of dissolved gases such as hydrogen, carbon monoxide, acetylene, ethylene, and composite gases in transformer oil.
• Measures moisture in oil expressed as relative humidity (%RH) and ppm.
• Utilizes transformer mathematical models based on IEEE standards to provide additional transformer condition information such as winding hot spot temperature, moisture bubbling temperature, insulation aging, and overload capacity.
• Supports additional sensor inputs, including transformer load, oil temperature, and ambient temperature for correlation with gas and moisture data.
• Offers configurable dual alarm levels (Alert and Alarm) for fault gas and moisture detection, as well as alarms for optional analog input cards and calculated transformer models.
• Built-in self-test every 15 days to ensure system reliability and generate a service alarm upon detecting faults such as power failure, sensor issues, or oil valve closure.
• Wide communication options including RS-485, modem, Ethernet, and fiber optic (multimode) with support for protocols like Hydran, Modbus®, DNP 3.0, and optional IEC 61850.
• Includes local LCD display and keypad for easy user interaction and alarm acknowledgment.
• Rugged, NEMA 4X (IP 66) rated enclosure suitable for tough industrial environments.
• Compatible with GE’s Perception™ software for fleet-level data download, trending, and analysis.
• Supports both standard mineral insulating oils and newer natural and synthetic ester-based fluids.

Applications:

• Medium to large transformers in power utilities to minimize unplanned outages.
• Industrial plants looking to reduce risks and avoid costly downtime.
• Asset supervision with easy installation typically on a single transformer oil valve without the need for additional piping or pumps.

Technical Specifications:

The GE Hydran M2 is recognized for its proven technology with over 50,000 units installed globally and sensor life estimated at over 10 years. It enhances transformer reliability by offering detailed analysis and real-time status updates, essential for efficient asset management and preventive maintenance.

This transformer monitor device integrates easily into SCADA or DCS systems, providing actionable data and alarms for transformer health management to avoid catastrophic failures and prolong asset life.

This model also has a next-generation version called the Hydran M2-X, which adds further features like extended sensor life, low maintenance, and compatibility with modern digital platforms.

Sources and further documentation are available through GE Grid Solutions and authorized distributors.The GE Hydran M2 is an advanced online dissolved gas (DGA) and moisture in oil monitoring device for transformers. It continuously measures dissolved fault gases like hydrogen, carbon monoxide, acetylene, and ethylene, as well as moisture content in transformer oil, helping detect developing faults early and minimize outage risks. It can also connect additional sensors (load, oil temperature) and uses IEEE-standard mathematical models to provide transformer condition insights like winding hot spot temperature, insulation aging, and cooling efficiency.

Key features include:

• Continuous real-time monitoring of gases and moisture in oil.
• Configurable dual alarm levels for fault detection.
• Automatic self-tests every 15 days with service alarms.
• Wide communication options: RS-485, modem, Ethernet, fiber optic with protocols including Hydran, Modbus®, DNP 3.0, and IEC 61850.
• Built-in display and keypad, NEMA 4X (IP66) enclosure.
• Compatible with GE’s Perception™ software for trend analysis and fleet management.
• Supports standard mineral oils and newer ester-based fluids.
• Compact installation on a single transformer oil valve, no extra piping or pumps needed.

Specifications:

• Dimensions: approx. 300 mm x 200 mm x 100 mm
• Weight: approx. 4 kg
• Power supply: worldwide options
• Warranty: 7 years