Product Introduction

GE Hydran M2 Mark III Enhanced Transformer DGA Monitoring The Hydran M2 is a compact, permanently installed, online transformer monitoring device that alerts personnel to fault conditions. It continuously monitors a combination of fault gases (ppm) or hydrogen only (depending on the sensor purchased). It also tracks moisture in the oil (readings are in %RH and ppm).

Real-time fault gas and moisture in oil measurement system: Ensures that potential problems are detected before the transformer fails.

Vacuum-free gas extraction membrane: Improves measurement accuracy and reliability.

Microprocessor-based intelligent electronics: Provides full system self-test and self-diagnostic capabilities.

NEMA4X (IP66) enclosure: Provides good protection level for harsh environments.

Digital display and multi-function interface: Includes analog input, digital input and output card, and Ethernet interface for easy system integration and data transfer.

Enhanced DGA monitoring function
GE Hydran M2 Mark III's enhanced DGA monitoring function obtains more information by connecting additional sensors (such as top and bottom tank oil temperature, transformer load or ambient temperature) and links it with DGA and moisture values ​​for a deeper analysis of the transformer's condition.

Data analysis and alarm settings
Level- and trend-based alarm settings: adjustable alarm thresholds to adapt to different working environments and transformer types.
Multiple communication options and protocols: including IEC®61850 standard, simplifying integration with SCADA or DCS systems4.
Application areas and market conditions
GE Hydran M2 Mark III is widely used in power, energy, petrochemical, rail transportation and other fields, helping users to detect potential problems in time and improve the operating efficiency and reliability of transformers5.

Features

Hydran M2 is easily field upgradeable to accept analog signals and monitor other critical transformer parameters

Calculates winding hot spots and other IEEE transformer models for enhanced diagnostics of transformer condition (depending on installed sensors)

Hydran M2 easily installs on existing single transformer valves and typically does not require power outages

Integrated display and keypad simplify local user interaction and visualization of Hydran M2 data

Built-in moisture sensor measures moisture in the oil, critical for identifying paper degradation and gasket leaks

Compatible with GE’s acclaimed Perception software for downloading, trending and analysis of transformer health data

Health conditions are critical to building a reliable network. When a transformer insulation system is overstressed, gases are generated that are dissolved in the oil. Dissolved Gas Analysis (DGA) in Oil is considered the best indicator of developing faults. Asset Surveillance • Easy to permanently install on a single transformer oil valve. No additional piping or pumps required. Optional inputs for other sensors Hydran™ M2 is a continuous online dissolved gas and moisture in oil monitoring device that alerts personnel to developing fault conditions in the transformer. It provides critical monitoring information and minimizes the risk of unplanned downtime. • Gas sensor choice: “Hydrogen only” or “Combined gas” with 100% response to hydrogen (general fault gas) and also sensitive to carbon monoxide (paper) acetylene (arc) and ethylene (oil) By connecting other sensors such as top and bottom tank oil temperature, transformer load or ambient temperature, additional information can be captured and used to correlate with the DGA and moisture values ​​for a deeper analysis of the transformer’s condition. • Moisture sensors measure water in the oil, which is a result of insulation paper degradation (producing CO + water) or gasket leaks. This rich data can not only be transmitted raw via the M2’s extensive communications options, but can also be converted into useful information via on-board calculations based on IEEE® standard mathematical models of the transformer to provide further condition information. Configurable alarms Key Benefits • Continuously measures fault gases and moisture dissolved in the oil to detect potential problems early, before they become serious transformer failures • Choice of gas sensor: traditional “composite gas” or more basic “hydrogen only” • Built-in calculation of transformer model based on IEEE standards (for mineral oil only) • Extensive communication options and protocols simplify integration with SCADA or DCS • Third generation of this proven design with a very large global installed base • Supports new low flammability ester-based oils as well as mineral transformer insulating oils Applications Power Utilities • All-in-one solution for critical mid-sized transformers • Focus and prioritize asset replacement strategies Industrial Plants • Reduce risk of process interruptions due to power failures • Minimize costly production downtime • Alarms when abnormal levels of fault gases or moisture are detected. Two alarm levels (one for warning and one for alarm) can be set to indicate increasing severity • Alarms can also be set based on values ​​from the optional analog input card or optional calculated transformer model • Automatic self-test every 15 days, triggering a service alarm if a fault is detected (including power failure, oil valve closure, sensor failure) Mark III Improvements • Complete overhaul, improved sensor durability, new electronics board and power supply make it RoHS compliant while improving unit reliability and functionality • Suitable for transformers using mineral insulating oil, but now also suitable for ester-based oils (natural or synthetic) • Compatible with GE’s acclaimed Perception™ software

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