PQA: Standard vs Limited general recorder
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Increasing recording time at a short registration periods is a well-known issue in power quality analysis that prompted us to invent two distinct solutions. One is auto recorder restart (presented in newsletter “PQA: Short registration period vs long time recording” [link do newslettra]), the other is to select between two pre-defined integrated recording profiles that best suit user’s needs.
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They are the Standard profile, which includes all recorded measurements (approx. 5220 registers) and is suitable for most PQA application and the Limited profile. The latter includes only a limited set (most important ones) of measurements (approx. 1220 registers) and is most suitable for long term recording with a short interval (1 week long record with a 1 second interval).
Main differences between the Standard / Limited profile:
- Limited profile registers only average (AVRG) values for P, Q, S, energy and harmonics, while the Standard profile also registers MIN, MAX, AVRGON values.
- Limited profile doesn’t register 10 s frequency values and interharmonics.
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More detailed overview of recording duration for different interval period in comparison with profile selection.
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| | Standard profile
| Limited profile
| | 1 sec | 12 hours / 1666MB | 7 days / 2657 MB | | 3 sec | 2 days / 2221MB | 15 days / 1898 MB | | 5 sec | 3 days / 1999 MB | 30 days / 2278 MB | | 10 sec | 7 days / 2332 MB | 60 days / 2278 MB | | 1 min | 30 days / 1666 MB | 60 days / 379 MB | | 2 min | 60 days / 1666 MB | 60 days / 189 MB | | 5 min | 60 days | 60 days | | 10 min | 60 days | 60 days | | 15 min | 60 days | 60 days | | 30 min | 60 days | 60 days | | 60 min | 60 days | 60 days | | 120 min | 60 days | 60 days |
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Metrel d.d.
| Ljubljanska c. 77 | | SI-1354 Horjul | | Slovenia |
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