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1MRK 504 160-UEN -
9.2
Transformer protection RET650 2.1 IEC
Commissioning manual
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 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.
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.
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.
Activating the test mode
Put the IED into the test mode before testing. The test mode blocks all protection
functions and some of the control functions in the IED, and 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 StartLED 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 startLED above the LCD will start flashing when the IED is in test
mode.
Section 9
Testing IED operation
55
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