To ensure correct results, check that the IED as well as the test
equipment are properly earthed before testing.
4.5
Releasing the function to be tested
Release or unblock the function to be tested 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 LHMI.
When testing a function in this blocking feature, not only the actual function 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. 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 LHMI
under
Main menu/Tests/Function test modes
menu remains “On”,
that is, the parameter
Blocked
is set to “Yes” and the parameter
TestMode
under
Main menu/Tests/IED test mode
remains active.
All functions that were blocked or released in a previous test mode
session, that is, the parameter
Test mode
is set to “On”, are reset when
a new test mode session is started.
1.
Select
Main menu/Tests/Function test modes
.
2.
Browse to the function instance that needs to be released.
3.
Set parameter
Blocked
for the selected function to “No”.
4.6
Verifying analog primary and secondary
measurement
Verify that the connections are correct and that measuring and scaling is done
correctly. This is done by injecting current and voltage to the IED.
Section 4
1MRS756801 E
Testing IED operation
26
630 series
Commissioning Manual