Hitachi Relion 670 Series Commissioning Manual page 206

Section 11
Testing functionality by secondary injection
Checking the operation of binary input and output
1. Simulate normal operation conditions with three-phase voltage on the main fuse group and the pilot
fuse group. Ensure the values are equal to their rated values.
2. Disconnect one of the phase voltage from the main fuse group or the pilot fuse group. Observe the
binary outputs of the IED. The MAINFUF or the PILOTFUF signals are simultaneously activated.
Only the output circuit related to the open phase will be active i.e either MAINFUF or PILOTFUF.
3. Establish a normal voltage operating condition and observe the corresponding output signals.
MAINFUF or PILOTFUF should change to 0 in about 27 ms.
4. Set normal conditions as mentioned in step 1.
5. Enable the BLOCK binary input and repeat step 2. MAINFUF or PILOTFUF should not appear.
Checking the operation of MAINFUF and PILOTFUF
1. Simulate normal operation conditions with three-phase voltage on the main fuse group and the pilot
fuse group. Ensure the values are equal to their rated values.
2. Decrease one of the three-phase voltages on main fuse group or pilot fuse group. The voltage
change must be greater than the set value for Vdif Main block or Vdif Pilot alarm. MAINFUF or
PILOTFUF signals are activated without any time delay.
3. Set normal conditions as mentioned in step 1. MAINFUF or PILOTFUF signals should reset.
4. Set SealIn to On, Vdif Main block to 20% of VBase and VSealIn to 70% of VBase.
5. Apply three-phase voltages with the value slightly below VSealIn level.
6. Decrease one of the three-phase voltages on main fuse group. The voltage change must be greater
than the set value for Vdif Main block. MAINFUF signal is activated.
7. After more than 5 seconds increase the measured voltage back to the value slightly below VSealIn
level. MAINFUF signal should not reset.
8. Slowly increase measured voltage to the value slightly above VSealIn until MAINFUF signal resets.
9. Record the measured voltage and compare with the set value VSealIn.
11.9.3.1 Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.9.4 Voltage based delta supervision DELVSPVC
Prepare the IED for verification of settings outlined in Section
11.9.4.1 Verifying the signals and settings
Make sure that the function is connected to SMAI function with V3P signal.
Delta supervision function has 6 different modes of operation. Proceed as follows to test the function in a
particular mode.
1. Set the following parameters:
•
•
•
•
200
Operation = Enabled
MeasMode = Phase-to-ground
Umin = 10% of VBase
DelU> = 50% of VBase
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1MRK506371-UUS Rev. M
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"Preparing the IED to verify
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Commissioning manual
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