Configure the zones used for the CS carrier send and for scheme communication
tripping by using the Application Configuration tool. The recommended settings of
tCoord
timer are based on maximal recommended transmission time for analog
channels according to IEC 60834-1. It is recommended to coordinate the proposed
settings with actual performance for the teleprotection equipment to get optimized
settings.
16.2.3.1
Permissive underreache scheme
SEMOD141800-6 v1
Set
Operation
=
On
Set
Scheme
type
=
Permissive UR
Set
tCoord
= 0 ms
Set
tSendMin
= 0.1 s
16.2.3.2
Permissive overreach scheme
SEMOD141800-9 v1
Set
Operation
=
On
Set
Scheme
type
=
Permissive OR
Set
tCoord
= 0 ms
Set
tSendMin
= 0.1 s
16.2.3.3
Blocking scheme
SEMOD141800-12 v1
Set
Operation
=
On
Set
Scheme
type
=
Blocking
Set
tCoord
= 25 ms (10 ms + maximal transmission time)
Set
tSendMin
= 0 s
16.2.3.4
Intertrip scheme
SEMOD141800-15 v1
Set
Operation
=
On
Set
Scheme
type
=
Intertrip
Set
tCoord
= 50 ms (10 ms + maximal transmission time)
Set
tSendMin
= 0.1 s
1MRK 504 163-UUS A
Section 16
Scheme communication
Transformer protection RET670 2.2 ANSI
825
Application manual
Summary of Contents for RELION RET670
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