Completing The Test; Current Protection; Instantaneous Phase Overcurrent Protection 3-Phase Output Phpioc; Measuring The Operate Limit Of Set Values - Hitachi RED670 Commissioning Manual

1MRK 505 378-UEN Rev. K
OperMode
231a
312a
321a
11.4.15.3

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.
11.5

Current protection

11.5.1 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.
11.5.1.1

Measuring the operate limit of set values

1. Set the operation mode to 1 out of 3.
2. Inject a phase current into the IED with an initial value below the set value of IP>> and also
make sure that the set value IP>> is in between IP>>Min and IP>>Max.
3. Increase the injected current in the Ln phase until the TRLn (n=1–3) signal appears.
4. Switch the fault current off.
5. Compare the measured operating current with the set value.
6. Set the operation mode to 2 out of 3 and inject current into one of the phases and then check
that no TRLn signal appears.
11.5.1.2 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.
Line differential protection RED670
Commissioning manual
Fault type/Faulted phase current to the IED
L1L2N/IL1 L1L2N/IL2 L2L3N/IL2
No Trip Trip
Trip No Trip
No Trip Trip
Observe: Do not exceed the maximum permitted overloading of the current circuits
in the IED.
© 2017 - 2022 Hitachi Energy. All rights reserved
L2L3N/IL3 L3L1N/IL1
Trip No Trip No Trip
No Trip Trip No Trip
No Trip Trip No Trip
"Preparing the IED to verify
Section 11
Testing functionality by secondary injection
L3L1N/IL3
Trip
Trip
Trip
GUID-8BD66BC8-AAC3-41C4-B819-B159361688D2 v5
SEMOD53531-1 v1
settings".
M11754-3 v8
M11754-11 v7
M11754-24 v5
153