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Section 8
1MAC050144-MB C
Measurement functions
582
615 series ANSI
Technical Manual
Phase Mode is "Three Phase". In this case, only the Phase Mode value "Single Phase"
results in the PICKUP_B interruption and the PICKUP_A dip.
It is also possible that there are simultaneously a dip in one phase and a swell in other
phases. The functionality of the corresponding event indication with one inactive phase is
shown in Figure 315. Here, the "Swell + dip" variation type of Phase mode is "Single
Phase". For the selection "Three Phase" of Phase mode, no event indication or any
activation takes place due to a non-active phase.
Figure 315:
Concurrent dip and swell when Phase mode is "Single Phase"
In Figure 316, one phase is in dip and two phases have a swell indication. For the Phase
Mode Dip value "Three Phase", the activation occurs only when all the phases are active.
Furthermore, both swell and dip variation event detections take place simultaneously. In
case of a concurrent voltage dip and voltage swell, both SWELLCNT and DIPCNT are
incremented by one.
Also Figure 316 shows that for the Phase Mode value "Three Phase", two different time
moment variation event swell detections take place and, consequently, DIPCNT is
incremented by one but SWELLCNT is totally incremented by two. Both in Figure 315
and Figure 316 it is assumed that variation durations are sufficient for detections to take
place.
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Содержание 615 Series ANSI
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Страница 29: ...1MAC050144 MB C Section 615 series ANSI 22 Technical Manual ...
Страница 389: ...Section 4 1MAC050144 MB C Protection functions 382 615 series ANSI Technical Manual ...
Страница 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
Страница 635: ...Section 10 1MAC050144 MB C Other functions 628 615 series ANSI Technical Manual ...
Страница 707: ...Section 15 1MAC050144 MB C Applicable standards and regulations 700 615 series ANSI Technical Manual ...
Страница 711: ...Section 16 1MAC050144 MB C Glossary 704 615 series ANSI Technical Manual ...
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