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SF6 gas detection thermal camera high voltage substation

Edwiin

03/28/2025

One method for detecting SF6 gas leakage in a substation is to use a reliable infrared camera with SF6 gas detection capabilities. This enables the identification of potential leaks during routine maintenance rounds. These new - generation infrared cameras integrate a high - performance thermal imager with a reliable pistol - grip form factor and SF6 gas detection functionality.

These devices offer several advantages over other methods, as detailed below:

They allow maintenance to be scheduled at a convenient time, eliminating any unplanned downtime.
They reduce the potential for equipment damage and the costs associated with these leaks.
Technicians can check for leaks from a safe distance while the equipment is in operation.
They can locate leaks in overhead equipment or in areas off the ground.

When using this device, the following points should be noted:

Avoid using it on rainy or windy days. Under such conditions, the gas dissipates too quickly, except in the case of a massive leak.
For the gas to be visible, it needs to have a different temperature from the background, so a thermal contrast is required.
Use a tripod to stabilize the camera during the inspection.
Position the camera 3 - 4 meters away from the target.

Common leak locations include flanges, the tops and bases of bushings, and tubes.

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