Releasing The Function To Be Tested; Verifying Analog Primary And Secondary Measurement - Hitachi Relion 670 Series Commissioning Manual

1MRK506371-UUS Rev. M
10.5

Releasing the function to be tested

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.
Procedure
1. Click the Function test modes menu.
The Function test modes menu is located in the local HMI under Main menu/Test /Function test
modes.
2. Browse to the function instance that needs to be released.
3. Set parameter Blocked for the selected function to No.
10.6

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.
Besides verifying analog input values from the merging unit via the IEC/UCA 61850-9-2LE process bus,
analog values from the transformer input module can be verified as follows.
1. Inject a symmetrical three-phase voltage and current at rated value.
2. Compare the injected value with the measured values.
The voltage and current phasor menu in the local HMI is located under Main menu /
Measurements /Analog primary values and Main menu /Measurements /Analog secondary
values .
3. Compare the frequency reading with the set frequency and the direction of the power.
The frequency and active power are located under Main menu /Measurements /Monitoring /
ServiceValues(MMXN) /CVMMXN:x . Then navigate to the bottom of the list to find the frequency.
4. Inject an unsymmetrical three-phase voltage and current, to verify that phases are correctly
connected.
Line distance protection REL670
Commissioning manual
Any function is blocked if the corresponding setting in the local HMI under Main menu /Test /
Function test modes menu remains Enabled, that is, the parameter Blocked is set to Yes
and the parameter TESTMODE under Main menu/Test /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 Enabled, are reset when a new test mode session is started.
Apply input signals as needed according to the actual hardware and the application
configuration.
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Section 10
Testing IED operation
M11413-2 v8
M11745-2 v14
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