HYDRAN M2-X is the third-generation online dissolved gas analysis (DGA) device for transformer oil from GE Vernova (formerly GE Grid), designed to continuously monitor early fault gases and moisture levels inside transformers 24/7. It is a leading high-end online monitoring solution in the industry.
1. Positioning and Core Purpose
Full Name: Hydran M2-X (Enhanced DGA Monitor)
Brand: GE Vernova (formerly GE Grid Solutions)
Core Function: DGA (Dissolved Gas Analysis) + Online Monitoring of Water in Oil
Target Applications: Oil-filled high-voltage equipment such as power transformers, auxiliary transformers, reactors, and converter transformers
Purpose: Early warning of overheating, discharge, partial discharge, and insulation aging to reduce unplanned outages
Key technical parameters
Principle: Permeation membrane + fuel cell gas sensor; Micro-humidity is a capacitive film sensor
Accuracy (at 35℃):
Gas: Reading ±10% ±25 ppm (H₂ equivalent)
Micro-humidity: ±2% RH
Response time: 10 min (reaches 90% step change) GE Vernova
Oil compatibility: Mineral oil, natural esters, synthetic esters (can be used directly, no need to replace the sensor)
Installation interface: 1.5″ NPT external thread, direct installation of transformer oil drain valve, no need to stop the machine, no need for oil pump GE Vernova
Shell / Protection: Aluminum shell, NEMA 4X / IP56, suitable for outdoor use GE Vernova
Size / Weight: 315×219×196 mm, 7.5 kg GE Vernova
Operating temperature: Ambient temperature -40℃ to +55℃; Oil temperature -40℃ to +105℃ (with heat sink V1) GE Vernova
Power supply: 90–132 / 180–264 VAC, 50/60 Hz GE Vernova
Output and Communication (Extensible)
Relay Output: 5 alarm channels (gas / micro water threshold adjustable)
Analog (A/B slots): 4-20 mA (e.g. A2/B2), capable of outputting H₂, micro water, etc.
Communication (P code):
Standard: Modbus RTU, DNP3 (RS-232/485)
Optional: Ethernet, IEC 61850, Profibus-DP
Software: Integrated with Perception™ platform, trend analysis, fault diagnosis, reports; can be connected to SCADA/APM
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