Completing The Test; Current Reversal And Weak-End Infeed Logic For Distance Protection 3-Phase Zcrwpsch; Current Reversal Logic - ABB Relion 670 Series Commissioning Manual

1MRK 511 403-UEN E
Command function with continuous unblocking (
Procedure
1. Activate the guard input signal (CRG) of the IED.
2. Using the scheme selected, check that a signal accelerated trip (TRIP) is obtained when
the guard signal is deactivated.
11.10.1.6

Completing the test

continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
11.10.2 Current reversal and Weak-end infeed logic for distance
protection 3-phase ZCRWPSCH
Prepare the IED for verification of settings as outlined in section
section
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.
11.10.2.1

Current reversal logic

It is possible to check the delay of the CS send signal with
reverse to a forward fault.
By continuously activating the CR input and changing from a reverse to a forward fault, the
tDelayRev can be checked.
delay
Checking of current reversal
Bay control REC670
Commissioning manual
"Preparing for test" in this chapter.
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
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Testing functionality by secondary injection
Unblock = 1 )
TESTMODE setting to Off .
"Requirements"
tDelayRev by changing from a
tDelayRev set value.
Section 11
M13868-76 v6
M13868-84 v6
M14947-2 v7
and
M14947-8 v3
M14947-13 v9
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