Completing The Test; Current Protection; Instantaneous Phase Overcurrent Protection 3-Phase Output Phpioc - ABB Relion 670 Series Commissioning Manual

1MRK 504 165-UEN E
rated value, if the measurement of the operating characteristics runs under constant voltage
conditions.
Measuring the operate limit of set values of load encroachment function
The load encroachment does not have any special output to be verified. It can only be verified
with the distance START and TRIP outputs.
Steps to test the load encroachment:
1. Supply the IED with healthy conditions for at least two seconds.
2. Apply the fault condition and slowly decrease the injected impedance to find the operate
value for of the phase-to-earth and phase-to-phase loops.
Under voltage seal-in
The under voltage seal-in logic can be verified using the TRUV and STUV outputs.
Steps to verify the logic:
1. Keep all the current and voltage in normal balanced condition.
2. Keeping the phase current at rated value, slowly reduce the voltage till it enters into the
respective zone mho characteristics and also below the set value of the under voltage
seal-in logic.
3. Before the operate time delay of the respective zone, reduce the current magnitude so
that the operating impedance moves out of the mho characteristics.
4. The under voltage seal-in should give a START and TRIP after the operate time delay is set
for the under voltage logic.
11.4.17.2

Completing the test

Continue to test another function or end the testing by setting the parameter
under Main menu/Tests/IED test mode/1: TESTMODE. If another function is tested, then set
the parameter
ZGVPDIS/1: ZGVPDIS for the function, or for each individual function in a chain, to be tested
next. Remember to set the parameter
been tested.
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
settings".
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
Transformer protection RET670
Commissioning manual
Blocked to No under Main menu/Tests/Function test modes/Impedance/
© Copyright 2017 ABB. All rights reserved
Blocked to Yes , for each individual function that has
Testing functionality by secondary injection
GUID-1219D2CC-D2EC-44B1-8F2E-A4C292590680 v2
GUID-93110921-550A-441F-A36F-901488CC41BB v3
TestMode to Off
"Preparing the IED to verify
Section 11
SEMOD53531-1 v1
M11754-3 v8
161