31
Condition monitoring functions
ā
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Characteristic Value
Current measuring accuracy
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Operate time accuracy īī§īī¦īīīīīī¢īīīī”īī¢īī¤īīī£īīīī īīīØī¦īīī”
Travelling time measurement ī
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ā
īīīīīīīŖī®īīīŗī£ī”īīīīīīī£ī īīØīīī”ī”ī£īīīīīī¢īīī¢īīīīī¢īīīīīīīīīīīī¢ī
Characteristic Value
Trip time
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NPS function: V
Fault
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voltage Lev
V
Fault
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voltage Lev
īīī©ī©īīī”
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Delta function:
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ī·īīīīīØīī¦īī¦īī”īī¢īīīīī¢īīīīīīīīīīīī īī¢ī
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īīØīŖīīī”
1)
Includes the delay of the signal output contact, f
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dom phase angle, results based on statistical distribution of 1000 measurements
1)
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jected from random phase angle, results based on statistical distribution of 1000 measurements
2)
Includes the delay of the signal output contact
ā
īīīīīīīŖīÆīīī«īÆīīī¢īīīīīīīīīīīī¢ī
Characteristic Value
Operation accuracy
Depending on the frequency of the current measured: f
n
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Pickup time
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V
Fault
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Minimum Typical Maximum
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Reset time īīīŖī¦īīī”
Reset ratio īī§īīīīīīī¦īīÆī¬
Retardation time īīī©ī«īīī”
Trip time accuracy in definite time mode īī§īī¦īīīīīī¢īīīī”īī¢īī¤īīī£īīīī īīīØī¦īīī”
Suppression of harmonics īøīŗīī
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