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).
11.12.3.1 Function revision history
GUID-23BE6A6F-8D87-4CD9-952B-40EE65D7F04C v1
Document
revision
Product
revision
History
B 2.2.1 -
C 2.2.2 -
D 2.2.2
E 2.2.2 -
F 2.2.3 -
G 2.2.3 -
H 2.2.3 -
J 2.2.4 -
K 2.2.4 -
L 2.2.4
M 2.2.5 Added DOs for teleprotection permissive (TxPrm & RxPrm1) transmit and receive signals in
accordance with 61850 Ed 2.0
11.12.3.2 Current reversal logic
M14947-8 v3
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
M14947-13 v9
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.
1MRK 504 165-UUS Rev. J Section 11
Testing functionality by secondary injection
Transformer protection RET670 267
Commissioning manual
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