Testing Ied Operation; Preparing The Ied To Verify Settings - ABB RET650 Series Commissioning Manual

1MRK 504 136-UUS B
Section 6
6.1

Preparing the IED to verify settings

If a test switch is included, start preparation by making the necessary connections to the test
switch. This means connecting the test equipment according to a specific and designated IED
terminal diagram.
Put the IED into the test mode to facilitate the test of individual functions and prevent unwanted
operation caused by other functions. The busbar differential protection is not included in the test
mode and is not prevented to operate during the test operations. The test switch should then be
connected to the IED.
Verify that analog input signals from the analog input module are measured and recorded
correctly by injecting currents and voltages required by the specific IED.
To make testing even more effective, use PCM600. PCM600 includes the Signal monitoring tool,
which is useful in reading the individual currents and voltages, their amplitudes and phase angles.
In addition, PCM600 contains the Disturbance handling tool. The content of reports generated by
the Disturbance handling tool can be configured which makes the work more efficient. For
example, the tool may be configured to only show time tagged events and to exclude analog
information and so on.
Check the disturbance report settings to ensure that the indications are correct.
For test functions and test and signal parameter names, see the technical manual. The correct
initiation of the disturbance recorder is made on pickup and/or release or trip from a function.
Also check that the wanted recordings of analog (real and calculated) and binary signals are
achieved.
The IEDs in the 650 series can have between 1 and 4 individual parameter setting groups prepared
with full sets of different parameters for all functions. The purpose of these groups is to be able to
handle different power system load conditions to optimize the parameters settings of the
different functions for these different power systems conditions (for example summer/winter and
day/night).
During testing, observe that the right testing method, that corresponds to the actual parameters
set in the activated parameter setting group, is used.
Set and configure the function(s) before testing. Most functions are highly flexible and permit a
choice of functional and tripping modes. The various modes are checked at the factory as part of
the design verification. In certain cases, only modes with a high probability of coming into
operation need to be checked when commissioned to verify the configuration and settings.
Requirements for testing the function.
Transformer protection RET650
Commissioning manual

Testing IED operation

Parameters can be entered into different setting groups. Make sure to test
functions for the same parameter setting group. If needed, repeat the tests for all
different setting groups used. The difference between testing the first parameter
setting group and the remaining is that there is no need for testing the
connections.
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Section 6
Testing IED operation
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