Measuring The Operate Limit Of Set Values; Completing The Test; Directional Phase Overcurrent Protection, Four Steps Oc4Ptoc; Verifying The Settings - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
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

1. Set the operation mode to
2. Inject a phase current into the IED with an initial value below the set value of
also make sure that the set value
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
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
Restore connections and settings to their original values, if they were changed for testing
purposes.
11.4.2

Directional phase overcurrent protection, four steps OC4PTOC

Prepare the IED for verification of settings outlined in Section
settings".
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

Verifying the settings

1. Connect the test set for current injection to the appropriate IED phases.
If there is any configuration logic that is used to enable or block any of the four available
overcurrent steps, make sure that the step under test is enabled (for example, end fault
protection).
If
and neutral.
If
and out from phase L2.
94
Observe: Do not exceed the maximum permitted overloading of the
current circuits in the IED.
The verification of the non-directional phase overcurrent function is done as
instructed below, but without applying any polarizing voltage.
1 out of 3 currents are chosen for operation: Connect the injection current to phases L1
2 out of 3 currents are chosen for operation: Connect the injection current into phase L1
© Copyright 2017 ABB. All rights reserved
1 out of 3 .
IP>> is in between IP>>Min and IP>>Max .
2 out of 3 and inject current into one of the phases and then
1MRK 511 403-UEN E
IP>> and
TESTMODE setting to Off .
"Preparing the IED to verify
Bay control REC670
Commissioning manual
M11754-11 v7
M11754-24 v5
SEMOD56287-67 v9
SEMOD56287-72 v10