LOP Protection Summary
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LOP protection operates on the loss of one or two phases but not three.
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LOP Protection requires two settings:
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LOP Voltage (2000...15,000 V)
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LOP Timeout (0.1...100.0 s)
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LOP protection can be set for:
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Off
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Trip
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Alarm
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Table 59 LOP Protection Settings/Specifications
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LOP Protection Settings/Specifications |
|
|---|---|
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LOP Voltage range |
2...15 kV Default 10 kV |
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LOP Voltage setting resolution |
1 V |
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LOP Voltage accuracy(1) |
2.5% ± 25 V |
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LOP Timeout range |
0.1...100.0 s Default 10.0 s |
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LOP Timeout resolution |
0.1 s |
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LOP Time accuracy |
± 50 ms |
| (1) Includes accuracy of VTs in the switchgear. | |