FANOX SIA D, Руководство пользователя, Страница: 30 / 117

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SIA-D_
Rev. 07
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ISO 9001:2008
Phase and neutral blocking signalling times are used by the feeder application.
- When these times are adjusted to zero, feeder signalling outputs are activated and
desactivated following the staring up state of corresponding functions.
- When phase blocking signaling time is adjusted to a value different from zero, once
activated 50P or 51P starting up, phase activation state remains activated during this
time.
- When neutral blocking signalling time is adjusted to a value different from zero, once
activated 50N, 51N, 67N1 or 67N2 starting up, neutral activation state remains activated
during this time. The objective is not keeping blocked supply relay during an undefined
time when the feeder relay fails in clearing the fault. In this case the typical value of
adjustement of this time is the feeder adjusted tripping time plus the opening failure time.
Phase and neutral blocking times are used by the supply application.
- When these times are adjusted to zero, blocking and releasing of the functions’ trip is
produced with the activation and disconnection of corresponding inputs.
- When phase blocking time is adjusted to a value different from zero, once activated the
phase blocking input, 50P and 51P functions’ block remains activated during this time.
- When neutral blocking time is adjusted to a value different from zero, once activated the
the neutral blocking input, 50N, 51N, 67N1 and 67N2 functions’ block remains activated
during this time. The objective is not keeping blocked the functions during an undefined
time when the supply equipment inputs remain activated. In this case the typical value of
adjustement of these times is the feeder tripping time plus two times the feeder opening
failure time.