42 Installation Guide
In case of WARNING or ALARM
Your company may already have a standard policy in place for dealing with hydrogen or moisture
alarms. In addition to this, for a WARNING, ABB recommends scheduling an off-line DGA to confirm the
readings and obtain the levels of other dissolved gases.
For an ALARM, ABB recommends performing an off-line DGA as soon as possible. Based on the result of
the off-line DGA, a diagnosis and maintenance recommendation can be formulated.
—
Table 9 Reaction to warnings and alarms
CoreSense Recommended action
Hydrogen or moisture level or rate-of-
change reached the WARNING threshold
Plan to perform an off-line lab DGA to confirm hydrogen and
moisture values and obtain other important gases. This should be
done in a short time frame.
Hydrogen or moisture level or rate-of-
change reached the ALARM threshold
Plan to perform an off-line lab DGA to confirm hydrogen and
moisture values and obtain other important gases. This should be
done as soon as possible.
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