InsuLogix® G2 acetylene, hydrogen, and moisture monitor
Provides actionable information on 2 key gases, saving more transformers from asset failure
Focus solely on acetylene, with no influence from other hydrocarbon gases, when performing measurements, giving you confidence in your critical event detection
Greater reliability, with no consumable components, results in a low cost of ownership
About the product
The InsuLogix® G2 acetylene, hydrogen, and moisture monitor combines early detection of incipient faults with critical fault detection in power transformers by measuring the presence of two key gases, hydrogen and acetylene, as well as moisture.
The single valve design uses state-of-the-art, self-calibrating laser sensor technology to detect acetylene (C2H2) gas as low as 0.5 ppm, providing an early indication of a critical fault condition within your asset. This allows for a confident, rapid response that is key to saving your transformers and preventing costly unplanned outages.
An intuitive, locally hosted web server user interface eliminates the need for extensive training to use the device, lowering labour costs and providing an efficient user experience for all authorised personnel.
FAQ / Frequently Asked Questions
Protection class: IP66 (NEMA 4X)Pollution degree: 4 Electrical equipment for outdoor useOperating altitude: 2000 m
Yes, the InsuLogix G2 can be installed and configured by OEMs using the locally hosted web server UI. Check with your transformer manufacturer on availability of service for them to perform device configuration.
The InsuLogix G2 is designed to be a low cost of ownership device and therefore does not require any ongoing preventative maintenance.
Typical installation can be completed in 2 hours. This includes mounting, wiring, and initial configuration.
The impact of pollutants in transformer oil has minimal impact on the device readings.
The standard warranty is 2 years. Additional years of extended warranty may be purchased at time of order with a maximum warranty of 5 years total.
Yes, settings of the InsuLogix G2 can be updated remotely, provided the user’s computer is connected to the same network as the monitor.
Standard: Modbus RTU & TCPOptional: DNP3, IEC 61850
A pump is not required to create oil circulation. The design and temperature control of the manifold promotes sufficient oil flow through convection to provide proper measurement results.
Ideally, it should be installed on a radiator return valve or near the return connection to the tank where natural oil flow is present. If this is not possible, the monitor can be installed on a drain valve in any location on the transformer as the design of the Gas Extraction Manifold (GEM) promotes oil flow through convection.
Yes, weighing in at 13.5 kg (~30 lb.), the InsuLogix G2 is designed to be installed on a single 38mm (1.5”) valve. The monitor has a 1.5” MNPT fitting for connection to the transformer valve and comes standard with a 1.5” NPT union fitting.
The software (user interface) uses a web server which is locally hosted on the InsuLogix G2. It does not require any interaction with the web and is intended to be buried behind the customer’s corporate firewall. Access to the user interface is achieved by entering the unit’s IP address into the navigation bar of Chrome or MS Edge. Any changes to the system or user interface software will not affect the compatibility of the system with these web browsers.
Further reading and webinars
Troubleshooting
The front panel LCD screen is blank.
Action: Check input power (ensure AC range is between 90–264 V or DC range is between 105–370 V).
Inspect the fuses on the power board. Replace if needed.
Check the LCD functionality. If ambient temperature is below -15°C, the screen may turn off temporarily.
The acetylene detection system (ADS) requires additional time to stabilise. Alternatively, components may be defective.
Action: Confirm the ambient temperature and refer to Cold Start guidance in Section 4 of the operation manual. If the issue persists for more than 2 hours, contact support.
Possible Causes:
- Incorrect Outstation ID settings.
- Incorrect communication protocol configurations.
- Faulty communication cable.
Action: Verify Outstation ID matches network settings.
Confirm the correct protocol (e.g., Modbus, DNP3) and connection type are selected in the user interface.
Test your cable connection and replace if necessary.
System alarms remain active until cleared manually.
Action: Navigate to the “Utilities” tab in the interface.
The reset alarms button is at the bottom of the screen below the Relay Test Tool.
Trend data (e.g., ppm/hour rates) only appears after the relevant time intervals have elapsed.
Action: Allow sufficient operational time (e.g., one hour for rate/hour).
Possible Causes: Invalid IP configuration settings.
Faulty Ethernet cable or connectors.
Action: Confirm IP settings and use Cat 5e or better cables.
Ensure connectors are fully attached.
Solid Red = Measurement Warning.
Flashing Red = Alarm state.
Action: Investigate recent event logs in the user interface.
Oil leaks may occur if connections are not properly tightened.
Action: Inspect connection piping. Tighten with adjustable wrenches as needed.
Action: De-energise power input.
Follow step-by-step guidance provided in the user manual under "Fuse Replacement".
Software and firmware updates
FAQ / Frequently Asked Questions
Yes, optional protocols like DNP3 and IEC 61850 can be purchased and integrated post-installation.
Key components, including the gas pump and filter, are designed with a 10-year minimum lifespan under standard operating conditions.
The G2 is designed to not require recalibration as the sensors are designed to detect and compensate for any degradation of components. For optimal performance, verify key sensor data bi-annually.
Accessories like the oil sample port adapter, tubing, and an IP67 Ethernet connector are included. Replacements can be ordered. Reference the catalogue numbers in the datasheet.
Yes. Navigate to the "Settings > Thresholds" tab in the user interface to configure alarm levels for gas concentrations, rate of change, and moisture.
Yes, administrators can create and manage multiple user profiles with varying levels of access permissions.
Yes. The InsuLogix G2 operates in temperatures ranging from -40°C to +65°C. The IP66 rating ensures it is protected from harsh environments.
Contact Megger support for a return authorisation (RA) number. Repairs should only be performed by qualified Megger personnel or authorised technicians.