ABB REL650 series, Commissioning Manual

Page: 156 / 208

9.9.1.5 Checking of unblocking logic
M13868-72 v4
Check the unblocking function (if the function is required) when checking the
communication scheme.
Command function with continuous unblocking (
Unblock = 1)
M13868-76 v6
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.
9.9.1.6 Completing the test
M13868-84 v6
Continue to test another function or end the test by changing the TESTMODE
setting to Off . Restore connections and settings to their original values, if they were
changed for testing purposes.
9.9.2 Current reversal and Weak-end infeed logic for distance
protection 3-phase ZCRWPSCH
M14947-2 v7
Prepare the IED for verification of settings outlined in Section "Preparing the IED
to verify settings" .
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.
9.9.2.1 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.
Section 9
1MRK 506 383-UEN A
Testing functionality by secondary injection
150 Line distance protection REL650 2.2 IEC
Commissioning manual