ABB Relion 670 Series Applications Manual page 206

Section 7
Current protection
No. StartMode
22 FollowStart
23 FollowStart
24 FollowStart
25 FollowStart&M
ode
26 FollowStart&M
ode
27 FollowStart&M
ode
200
RetripMode t1 and t2 initiated
with
Off external START
UseFunctionMode external START
Always external START
Off external START
and current
above set level
UseFunctionMode external START
and current
above set level
Always external START
and current
above set level
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When t1 has When t2 has elapsed,
elapsed, TRRET TRBU will be given if
will
never be given current is above set
level of IPh> and
higher than
I>BlkCBPos or
CBCLD input has
logical value one
when current is
smaller than
I>BlkCBPos
be given if current current is above set
is above set level level of IPh> and
of IPh> and higher higher than
than I>BlkCBPos I>BlkCBPos or
or CBCLD input CBCLD input has
has logical value logical value one
one when current when current is
is smaller than smaller than
I>BlkCBPos I>BlkCBPos
be given if external current is above set
START is present level of IPh> and
higher than
I>BlkCBPos or
CBCLD input has
logical value one
when current is
smaller than
I>BlkCBPos
never be given current is above set
level of IPh> and
higher than
I>BlkCBPos or
CBCLD input has
logical value one
when current is
smaller than
I>BlkCBPos
be given if current current is above set
is above set level level of IPh> and
of IPh> and higher higher than
than I>BlkCBPos I>BlkCBPos or
or CBCLD input CBCLD input has
has logical value logical value one
one when current when current is
is smaller than smaller than
I>BlkCBPos I>BlkCBPos
be given if external current is above set
START is present level of IPh> and
higher than
I>BlkCBPos or
CBCLD input has
logical value one
when current is
smaller than
I>BlkCBPos
1MRK 505 370-UUS Rev. K
t1 and t2 will be
stopped (reset) if
external START
disappears
external START
disappears
external START
disappears
current is below set
level of IPh> or
external START
disappears
current is below set
level of IPh> or
external START
disappears
current is below set
level of IPh> or
external START
disappears
Busbar protection REB670
Application manual