GE Grid Solutions Hydran M2 (Mark III) Enhanced DGA monitoring for transformers

Alarm level: divided into two levels: "Alert" and "Alarm", clearly distinguishing the priority of risks.

Automatic self diagnosis: Perform equipment self inspection every 15 days. If a fault is detected (such as power failure, oil valve closure, sensor failure, battery replacement), it will automatically trigger a "maintenance alarm" to ensure the reliability of the monitoring device itself.

（4） Data communication and integration capabilities

Hydran M2 supports multiple communication protocols and interfaces, and can be seamlessly integrated into existing power grid monitoring systems (SCADA/DCS) to achieve remote data transmission and centralized management

Communication interface:

Local interface: RS-232 (DB-9 connector, used for local computer configuration);

Remote interface: RS-485 (terminal block, 2000Vac RMS isolation, supports multi device networking);

Optional extensions: Ethernet (copper RJ-45/multimode fiber ST), GSM/GPRS wireless modem, PSTN analog modem (V92/56K).

Communication protocol: Supports Hydran private protocol Modbus ®、 DNP 3.0, IEC 61850 (standard communication protocol for power systems, adapted to smart grid architecture).

Data output: capable of transmitting raw monitoring data (gas concentration, moisture value), alarm status, model calculation results, and supporting integration with GE Perception ™ Software (GE dedicated data analysis platform) to achieve data trend analysis, historical comparison, and report generation.

Technical specifications and environmental adaptability

（1） Core technical parameters

Category specific parameters

Display and operation backlit LCD (128 × 64 pixels) with buttons (for device configuration and alarm confirmation)

Relay output 5-way dry contact relay (C-type SPDT), rated load: 3A@250Vac (obstructive) 3A@30Vdc (obstructive)

Power requirements for wide switching power supply: 90-132 Vac or 180-264 Vac, 47-63 Hz, maximum 650VA

Mechanical dimensions are 315 × 219 × 196 mm (12.4 × 8.63 × 7.72 inches)

Weight: Installation weight 7.5Kg (16.5lb), transportation weight 9.0Kg (20lb)

Installation interface with 1.5-inch NPT external thread, optional 1-inch/2-inch NPT internal thread adapter (suitable for different transformer oil valves)

（2） Environmental adaptability (ensuring harsh operating conditions)

Scope of adaptation to environmental conditions

Working environment temperature -40 ° C to+55 ° C (-40 ° F to+131 ° F)

Working environment humidity 0-95% RH (non condensing)

The oil temperature at the valve is -40 ° C to+105 ° C (-40 ° F to+221 ° F), and can be paired with a finned heat dissipation adapter for high temperature scenarios

Oil pressure at the valve: 0-700 kPa (0-100 psi), supports vacuum environment (vacuum tolerance sensor)

Protection level NEMA 4X (IP66), dustproof, splash proof, suitable for harsh outdoor/substation environments

Application scenarios and target users

Hydran M2 is mainly aimed at key scenarios in the power industry and industrial sector that rely on transformers. The core users and application values are as follows:

（1） Electricity utilities (grid companies)

Application scenario: Centralized monitoring of medium capacity transformers (such as distribution transformers, regional substation main transformers);

Core values:

Optimize asset replacement strategy: Based on equipment health status data, prioritize the replacement of high-risk transformers to avoid blind investment;

Reduce unplanned shutdowns: Early warning of faults, reduce the risk of power grid interruption, and ensure the reliability of residential and industrial electricity.

（2） Industrial factories (such as chemical, metallurgical, and manufacturing industries)

Application scenario: Factory owned substation transformer (to ensure power supply for production processes);

Core values:

Avoiding production interruptions: Transformer failures can cause production line shutdowns, and monitoring devices can reduce costly downtime caused by power failures;

Simplified operation and maintenance: No need for frequent manual sampling, reducing the workload of factory equipment management.

（3） Asset regulatory agencies

Application scenario: Remote supervision of multi site transformers by third-party asset operation and maintenance companies;

Core values:

Convenient installation: directly installed on the transformer oil valve, without the need for additional pipelines or pump bodies, reducing on-site renovation workload;

Centralized management: Multiple device data aggregation is achieved through communication networks to generate unified operation and maintenance reports.

Mark III version core improvements (compared to previous generation)

As a third-generation product, the Hydran M2 (Mark III) has undergone comprehensive upgrades in reliability, compatibility, and functional scalability

Hardware optimization: increased durability of sensors, redesigned electronic boards and power supplies to comply with RoHS environmental standards, while improving overall equipment reliability;

Oil compatibility expansion: Added support for low flammability ester insulating oils (natural/synthetic), covering new environmentally friendly transformers;