Czech utility company uses optical gas imaging to check for SF6 leaks

A Czech utility company with nearly 40 substations had a difficult inspection task: surveying and maintaining dozens of circuit breakers, current transformers, and voltage transformers that use sulfur hexafluoride (SF6) as an insulator. This gas is very effective at preventing or delaying electric discharges, so it's important to ensure the insulated components aren't leaking gas, especially since SF6 can be harmful for the environment. This case study discusses how the utility company met the challenge posed by these gas leaks in order to ensure the continuity of power distribution and limit the gas's environmental impact.

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