This object contains the threshold value for the
cePfePerfCurrentEffciency object. If during the last 5
second measurement period the cePfePerfCurrentEfficiency
object becomes less than or equal to this threshold value,
an event of type 'thldEfficiencyEvent' will be genera-
ted.
Value of zero indicates that no comparison is being made
between the cePfePerfCurrentEfficiency object value and
the threshold value, therefore no event action will be gene-
rated.