Hitachi Relion 650 Series Technical Manual page 350

Section 12
Monitoring
Last operation time alarms
The operation times of the last operation are compared against their expected values, which are
either set values or calculated average values, depending on the AlmTolSetSel setting. Refer
305 for detailed description.
Table 305: Reference values for checking actual switching times (X = L1 / L2 / L3)
AlmTolSetSel
setting
AlmTolOnDef
Val
AlmTolOnAvg
CalVal
Any deviation of more than AlmTolRange from the expected value will raise an alarm. The only
exception is the first operation when comparison to calculated average values (AlmTolOnAvgCalVal)
is selected:
Here, an alarm will be raised if the difference between phases exceeds the AlmTolRange setting.
344
Primary Primary
contact contact
closing time opening time
DefaultPriClTi DefaultPriOp
meX setting TimeX setting
CLAVGPRIX OPAVGPRIX
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NO (52a) NO (52a)
closing time opening time
DefaultNOClT DefaultNOOp
imeX setting TimeX setting
CLAVGNOX OPAVGNOX
1MRK 511 557-UEN Rev. A
GUID-DC5703CC-3AF0-4A20-BBCD-CE0ACC2A253D v2
Table
NC (52b) NC (52b)
closing time opening time
DefaultNCClT DefaultNCOp
imeX setting TimeX setting
CLAVGNCX OPAVGNCX
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