On-line DGA commercial products recommendation

[leoliu]

A power utility company want to install two on-line DGA monitors for their transformers. It will be greatly appreciated if anybody here like to recommend some available products or the exprience with using them to me.

 

[leoliu]

please take a look at the post and give any suggestion

 

[Dumbo2929]

I have recently installed a Morgan-Shaffer Calisto, which is a new hydrogen and water monitor. It is not a full on-line DGA, by is similar to the Hydran or other units. The Calisto was easy to install, program and provides very accurate data. I would recommend this for hydrogen and water monitoring. Sudden increases in hydrogen are predictors of transformer failures.