ABB RED670 Commissioning Manual page 239

1MRK 505 378-UUS Rev. J
Values of the logical signals for ZCRWPSCH are available on the local HMI under Main menu/Tests/
Function status / Scheme communication / ZCRWPSCH(85) /ZCRWPSCH:1.
The Signal Monitoring in PCM600 shows signals that are available on the Local HMI.
The current reversal logic and the weak-end infeed functions are tested during the secondary-injection
test of the impedance or overcurrent protection zones together with the scheme communication logic for
the distance protection function ZCPSCH (85).
11.11.3.1 Function revision history
Document
revision
B
C
D
E
F
G
H
J
K
L
M
11.11.3.2 Current reversal logic
It is possible to check the delay of the CS send signal with tDelayRev by changing from a reverse to a
forward fault.
By continuously activating the CR input and changing from a reverse to a forward fault, the delay
tDelayRev can be checked.
Checking of current reversal
Line differential protection RED670
Commissioning manual
Product History
revision
2.2.1 -
2.2.2 -
2.2.2
2.2.2 -
2.2.3 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.4
2.2.5 Added DOs for teleprotection permissive (TxPrm & RxPrm1) transmit and receive signals in
accordance with 61850 Ed 2.0
The reverse zone timer must not operate before the forward zone fault is applied. The
user might need to block the reverse zone timer setting during testing of current reversal.
The forward zone timer must be set longer than the tDelayRev set value.
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Section 11
Testing functionality by secondary injection
GUID-23BE6A6F-8D87-4CD9-952B-40EE65D7F04C v1
M14947-8 v3
M14947-13 v9
233