Woodward HighPROtec MCDLV4, Руководство пользователя, Страница: 417 / 1275

Parameters
If the Adaptive Parameter feature is not used, the adaptive set control logics will not be selected (assigned). The
protective elements work in this case just like a normal protection using the “Default” settings. If one of the
Adaptive Set Control logics” is assigned to a logic function, the protective element will be “switched-over” to the
corresponding adaptive settings if the assigned logic function is asserted and will fall back to the “Default” Setting if
the assigned signal that has been activated the
Adaptive Set has fallen back.
Application Example
During a Switch-OnTo-Fault condition, it is usually requested to make the embedded protective function tripping the
faulted line faster, instantaneously or sometimes non-directionally.
Such a Switch-OnTo-Fault application can easily be realized using the
Adaptive Parameter features above
mentioned: The standard time overcurrent protection element (e.g. 51P) normally works with an inverse curve type
(e.g. ANSI Type A), while in case of
SOTF condition, it should trip instantaneously. If the SOTF logic function
»SOTF
ENABLED
« is detecting a manual circuit breaker close condition the relay switches to AdaptiveSet1 if the
signal »SOTF.
ENABLED
« is assigned to AdaptiveSet1. The corresponding AdaptiveSet1 will become active and that
means e.g. » curve type = DEFT« and »t = 0« sec.
417 MCDLV4 DOK-HB-MCDLV4-2E