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IEC09000652-1-en.vsd
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IEC 61850
IEC09000652 V1 EN-US
Figure 19: Connection example of the test equipment to the IED when test
equipment is connected to the transformer input module
10.5 Releasing the function to be tested
M11413-2 v7
Release or unblock the function to be tested. This is done to ensure that only the
function or the chain of functions to be tested are in operation and that other
functions are prevented from operating. Release the tested function(s) by setting
the corresponding Blocked parameter under Function test modes to No in the local
HMI.
When testing a function in this blocking feature, remember that not only the actual
function must be activated, but the whole sequence of interconnected functions
(from measuring inputs to binary output contacts), including logic must be
activated. Before starting a new test mode session, scroll through every function to
ensure that only the function to be tested (and the interconnected ones) have the
parameters Blocked and eventually EvDisable set to No and Yes respectively.
Remember that a function is also blocked if the BLOCK input signal on the
corresponding function block is active, which depends on the configuration. Ensure
that the logical status of the BLOCK input signal is equal to 0 for the function to be
tested. Event function blocks can also be individually blocked to ensure that no
events are reported to a remote station during the test. This is done by setting the
parameter EvDisable to Yes.
Any function is blocked if the corresponding setting in the local
HMI under Main menu/Test/Function test modes
menu remains
On, that is, the parameter Blocked is set to Yes and the parameter
TESTMODE under Main menu/Test/IED test mode remains
Section 10 1MRK 505 378-UEN A
Testing IED operation
92 Line differential protection RED670 2.2 IEC
Commissioning manual
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