Delta Blocking Scheme - ABB REL650 Applications Manual

Section 12
Scheme communication
12.1.3.2
12.1.3.3
12.1.3.4
398
tSendMin
Set = 0 s
Unblock Disabled
Set =
(Set to
used.
Set to
Set tSecurity = 0.035 s

Delta blocking scheme

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