ABB REL650 series, Applications Manual

Page: 404 / 516

Set tSendMin = 0 s
Set Unblock = Disabled
(Set to
NoRestart if Unblocking scheme with no alarm for loss of guard is to be
used.
Set to Restart if Unblocking scheme with alarm for loss of guard is to be used)
Set tSecurity = 0.035 s
12.1.3.2 Delta blocking scheme
Set Operation = Enabled
Set SchemeType = DeltaBlocking
Set
tCoord
= 0 s
Set
tSendMin
= 0 s
Set
Unblock
=
Disabled
(Set to NoRestart if Unblocking scheme with no alarm for loss of guard is to be
used.
Set to
Restart if Unblocking scheme with alarm for loss of guard is to be used)
Set
tSecurity
= 0.035 s
Set
DeltaI
= 10 %IB
Set
DeltaV
= 5 %VB
Set
Delta3I0
= 10 %IB
Set
Delta3V0
= 5 %VB
12.1.3.3 Permissive underreaching scheme
Set
Operation
=
Enabled
Set
SchemeType
=
Permissive UR
Set tCoord = 0 ms
Set tSendMin = 0.1 s
Set Unblock = Disabled
Set tSecurity = 0.035 s
12.1.3.4 Permissive overreaching scheme
Set Operation = Enabled
Set
Scheme type
=
Permissive OR
Set
tCoord
= 0 ms
Set
tSendMin
= 0.1 s (0 s in parallel line applications)
Set
Unblock
=
Disabled
Set
tSecurity
= 0.035 s
Section 12
1MRK 506 334-UUS A
Scheme communication
398
Application manual