Measuring The Trip Limit Of Set Values; Completing The Test; Directional Phase Overcurrent Protection, Four Steps Oc4Ptoc (51_67); Function Revision History - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
• Phase-to-ground 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 trip 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 TR_A (TR_B or TR_C) 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 Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.4.2 Directional phase overcurrent protection, four steps OC4PTOC
(51_67)
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
Table continues on next page
92
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 -
© 2017 - 2021 Hitachi Power Grids. All rights reserved
1MRK 511 403-UUS Rev. K
"Preparing the IED to verify
GUID-154CAE8E-8FD4-460C-852D-6E5C93545F0D v1
Commissioning manual
M11754-11 v7
M11754-24 v5
SEMOD56287-67 v9
settings".
Bay control REC670