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Section 8
Testing IED operation
8.1.2
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 test switch should then be connected to the IED.
To make testing even more effective, use PCM600. 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.
Check the disturbance report settings to ensure that the indications are correct.
For information about the functions to test, for example signal or parameter names, see the technical
manual. The correct initiation of the disturbance recorder is made on start and/or release or trip from
a function. Also check that the wanted recordings of analog (real and calculated) and binary signals
are achieved.
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.
8.2
Activating the test mode
Put the IED into the test mode before testing. The test mode blocks almost all the protection
functions (except busbar differential protections) and some of the control functions in the IED. The
individual functions to be tested can be unblocked to prevent unwanted operation caused by other
functions. In this way, it is possible to test slower back-up measuring functions without the
interference from faster measuring functions. The test switch should then be connected to the IED.
Test mode is indicated when the yellow Start LED flashes.
1.
Browse to the TESTMODE menu and press E.
The TESTMODE menu is found on the local HMI under Main menu /Test/IED test mode /
TESTMODE
2.
Use the up and down arrows to choose On and press E.
3.
Press the left arrow to exit the menu.
The dialog box Save changes appears.
4.
Choose Yes, press E and exit the menu.
The yellow start LED above the LCD will start flashing when the IED is in test mode.
38
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.
In order to get the following information in SAM600-IO, the LHMI service kit is need. For
more information on LHMI service kit, refer section User interface.
© 2017 - 2023 Hitachi Energy. All rights reserved
1MRK511447-UEN Rev. E
Switchgear control unit SAM600-IO
Commissioning manual
M11741-2 v13
M11412-2 v16
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