Completing The Test; Current Protection; Instantaneous Phase Overcurrent Protection 3-Phase Output Phpioc; Measuring The Operate Limit Of Set Values - Hitachi Relion 670 Series Commissioning Manual

1MRK 511 403-UEN Rev. L
2. Increase the voltage and make note of the operate value U>Trip. This is done by manual
testing and without trip of the test set.
3. Connect the trip contact to the test set to stop the test set for measurement of trip times below.
4. Reduce the voltage slowly and make note of the reset value. The reset value must be high for
this function.
5. Check the operating time by injecting a voltage corresponding to 1.2 ˣ U>Trip level. Make note
of the measured trip time.
6. If required, verify the trip time at another voltage. Normally 2 ˣ U>Trip is selected.
7. If used, measure the alarm level operating value. Increase the voltage and make note of the
operate value U>Alarm. This is done with manual test and without trip of the test set.
8. Measure the operating time on the alarm output by connecting the stop of the test set to an
output from tAlarm. Inject a voltage 1.2 ˣ U>Alarm and measure the alarm time.
9. Check that trip and alarm outputs operate according to the configuration logic.
10. Finally check that start and alarm information is stored in the event menu and if a serial
connection to the SA is available verify that the correct and only the required signals are
presented on the local HMI and on the SCADA system.
11.3.1.2

Completing the test

Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
11.4

Current protection

11.4.1 Instantaneous phase overcurrent protection 3-phase output
PHPIOC
Prepare the IED for verification of settings outlined in Section
Values of the logical signals for PHPIOC are available on the local HMI under Main menu /Tests /
Function status /Current protection /InstPhaseOverCurrent(50,3I>>) /PHPIOC(50;3I>>):x ,
where x = 1, 2, and 3.
The Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
To verify the settings the following fault type should be tested:
• Phase-to-earth fault
Ensure that the maximum continuous current, supplied from the current source used for the test of
the IED, does not exceed four times the rated current value of the IED.
11.4.1.1

Measuring the operate limit of set values

Bay control REC670
Commissioning manual
The required trip and alarm voltage, as well as the used stabilizing resistance value
must be set in the function. Note as well that the used CT input in the IED must
have the ratio set as 1:1. This is essential for the measurement of the expected
value. Normally a slightly higher operating value is no problem as the sensitivity is
not influenced much.
Information on how to use the event menu is found in the operator's manual.
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Testing functionality by secondary injection
"Preparing the IED to verify
Section 11
SEMOD55257-73 v4
SEMOD53531-1 v1
M11754-3 v8
settings".
M11754-11 v7
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