Description
HYDRAN M2
Brief Overview
Core Functional Merits
- Two sensor options available: composite gas sensor or hydrogen-only sensor, matching different asset monitoring budgets
- Simultaneously detects fault gas equivalent concentration and relative humidity in oil to assess paper insulation aging
- Supports external auxiliary sensors for oil temperature, ambient temperature and load current correlation analysis
- Embedded IEEE-standard transformer condition algorithms, converting raw measurement data into actionable asset evaluation results
- Multiple tiered configurable alarms, supporting threshold trigger and rate-of-change trend alarm logic
- No internal moving components; low routine maintenance demand, sensor field-replaceable
- Robust sealed enclosure with NEMA 4X / IP56 rating, directly mountable on transformer oil drain valves for outdoor installation
- Rich communication portfolio including Modbus RTU, DNP3.0, optional Ethernet and IEC 61850 for seamless integration with SCADA and substation automation systems
- Built-in data logging function for historical trend tracing and post-fault analysis
HYDRAN M2
Technical Specifications
| Specification | Parameters |
|---|---|
| Manufacturer | GE Vernova (GE Grid Solutions) |
| Monitoring Object | Dissolved fault gases & moisture in transformer insulating oil |
| Gas Measuring Range | 0–2000 ppm (H₂ equivalent) |
| Gas Accuracy | ±10% reading or ±25 ppm (whichever larger) |
| Moisture Measurement | 0–100 %RH, accuracy ±2 %RH |
| Response Time | 10 minutes for 90% step change of gas concentration |
| Power Supply | Universal AC 90–264 V, 47–63 Hz |
| Enclosure Protection | NEMA 4X / IP56 |
| Mounting Interface | Standard 1.5” NPT thread (adapters for other sizes optional) |
| Ambient Operating Temp | -40 ℃ ~ +55 ℃ |
| Oil Temperature Range at Valve | -40 ℃ ~ +105 ℃ |
| Supported Oil Medium | Mineral oil, natural & synthetic ester fluids |
| Communication Ports | RS232 local service port, isolated RS485; optional fiber/copper Ethernet |
| Relay Outputs | Multi-group programmable alarm contacts |
Installation & Commissioning Guide
All installation work shall comply with substation safety regulations. Confirm the transformer valve is in good condition before mounting the unit. Thread sealing treatment is required to prevent oil leakage after installation.
Avoid direct sunlight exposure and reserved enough ventilation space around the housing. Separate signal cables from high-current power wiring to reduce electromagnetic interference.
Primary Application Scenarios
Power Grid Substation Transformers
Real-time condition monitoring for main transformers at 110kV, 220kV and higher voltage substations to prevent unplanned grid outages.
Thermal & Hydropower Plant Generator Transformers
Track insulation health of unit step-up transformers under variable load operating conditions.
Offshore & Onshore Wind Farm Boost Station Transformers
Adapt to remote, unattended operation environments, supporting long-distance remote monitoring.
Heavy Industry & Cogeneration Enterprises
Critical transformer monitoring for petrochemical, metallurgy and data center self-owned power distribution systems.
Transformer Retrofit & Asset Life Extension Projects
Cost-effective upgrade solution for aging transformers to realize transition from periodic maintenance to condition-based maintenance.
