13.11.4.9 Completing the test
Continue to test another function or end the test by changing the Test mode setting
to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.
13.11.5
Single command SingleCommand16Signals
For the single command function block, it is necessary to configure the output
signal to corresponding binary output of the IED. The operation of the single
command function (SingleCommand16Signals) is then checked from the local
HMI by applying the commands with Mode = Off, Steady or Pulse, and by
observing the logic statuses of the corresponding binary output. Command control
functions included in the operation of different built-in functions must be tested at
the same time as their corresponding functions.
13.12 Scheme communication
13.12.1 Scheme communication logic for residual overcurrent
protection ECPSCH
Prepare the IED for verification of settings as outlined in section
"Overview" and
section "Preparing for test" in this chapter.
Before testing the communication logic for residual overcurrent protection function
ECPSCH, the four step residual overcurrent protection function EF4PTOC has to
be tested according to the corresponding instruction. Once this is done, continue
with the instructions below.
If the current reversal and weak-end infeed logic for earth-fault protection is
included, proceed with the testing according to the corresponding instruction after
the testing the communication logic for residual overcurrent protection. The current
reversal and weak-end-infeed functions shall be tested together with the permissive
scheme.
13.12.1.1 Testing the directional comparison logic function
Blocking scheme
Procedure
1MRK 504 088-UEN C Section 13
Verifying settings by secondary injection
193
Installation and commissioning manual
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