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.
445 MCDGV4 DOK-HB-MCDGV4-2E
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