Completing The Test; Directional Phase Overcurrent Protection, Four Steps Oc4Ptoc; Function Revision History; Verifying The Settings - Hitachi Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
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.
11.4.1.2

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.
11.4.2

Directional phase overcurrent protection, four steps OC4PTOC

Prepare the IED for verification of settings outlined in Section
Values of the logical signals for OC4PTOC are available on the local HMI under Main menu/Tests/
Function status/Current protection/PhaseOverCurrent4Step(51_67,4(3I>)) /
OC4PTOC(51_67;4(3I>)):x, where x = instance number.
The Signal Monitoring in PCM600 shows the same signals that are available on the local HMI.
11.4.2.1

Function revision history

Document
revision
A
B
C
D
E
F
G
H
J
K
11.4.2.2

Verifying the settings

88
Observe: Do not exceed the maximum permitted overloading of the current circuits
in the IED.
Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.4 -
2.2.4 -
2.2.5 • The harmonic restraint function changed to freeze the definite and IDMT timers.
• The maximum value of the settings IMin1, IMin2, IMin3 and IMin4 has been
decreased to 1000.0 % of IBase.
The verification of the non-directional phase overcurrent function is done as
instructed below, but without applying any polarizing voltage.
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1MRK 511 403-UEN Rev. L
"Preparing the IED to verify
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Bay control REC670
Commissioning manual
M11754-24 v5
SEMOD56287-67 v9
settings".
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