go to the Transformer service product page Kevin Laitkep asked on Sep 9th, 2014 in Transformer service

At what PPM of gas content in oil should the alarm point be set at? At what PPM should we be concerned?

We have ABB GSU Power transformers that have GE M2 Hydran monitoring units on them. We are trying to figure out where to set the proper alarm setting for gas content in the oil.

Andre Steinberg, Marketing and Sales Manager

ABB's answer

Our recommendation would be to take an oil sample from each transformer and make sure that H2 is below 100 ppm and CO below 350 ppm (current levels indicated in the IEEE Guide) - if that is true than set first alarm level to 150-200 ppm and the next to 250-300 ppm. Both would indicate the need for further investigation since Hydran is just a flag like sensor.

If you have any further questions, pls contact directly our Transformer Service center:

Customer Service Center
Address: ABB Inc. INYIV Customer Service Center MS 3L7 29801 Euclid Ave Wickliffe OH 44092-2530 USA
Phone: +1 800 435 7365 or 1 800 HELP 365
Fax: +1-919-666-1377


Submit comment cancel

Area expert

  • Andre Steinberg

    Andre Steinberg

    Marketing and Sales Manager

    Transformer service

Contact ABB

If you want to purchase a product, need any pricing information or need help or support from ABB, please contact your local partner.

Haven't found what you've been looking for?

or Ask a question or Contact ABB

ABB's website uses cookies. By staying here you are agreeing to our use of cookies. Learn more