ABB RED670 - Identifying the Function to Test in the Technical Reference Manual; Differential Protection; High Impedance Differential Protection HZPDIF; Verifying the Settings

When the IED is brought into normal service it is recommended to delete all events
resulting from commissioning tests to avoid confusion in future fault analysis. All
events in the IED can be cleared in the local HMI under Main Menu//Clear/Clear
internal event list
or Main menu/Clear/Clear process event list. It is not
possible to clear the event lists from PCM600.
When testing binary inputs, the event list (EL) might be used instead. No uploading
or analyzing of registrations is then needed since the event list keeps running,
independent of start of disturbance registration.
11.2 Identifying the function to test in the technical
reference manual
M11748-2 v4
Use the technical manual to identify function blocks, logic diagrams, input and
output signals, setting parameters and technical data.
11.3 Differential protection
IP10805-1 v1
11.3.1 High impedance differential protection HZPDIF
SEMOD55257-42 v3
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
11.3.1.1
Verifying the settings
SEMOD55257-46 v5
1.
Connect single-phase or three-phase test set to inject the operating voltage.
The injection is done across the measuring branch.
The required trip and alarm voltage, as well as the used
stabilizing resistance value must be set in the function. Note
as well that used CT input in the IED must have ratio set as
1:1. This is essential for the measurement of the expected
value. Normally a slightly higher operating value is no
problem as the sensitivity is not influenced much.
2. Increase the voltage and make note of the operate value U>Trip
. This is done
by manual testing and without trip of the test set.
3. Connect the trip contact to the test set to stop the test set for measurement of
trip times below.
4. Reduce the voltage slowly and make note of the reset value. The reset value
must be high for this function.
1MRK 505 378-UEN A Section 11
Testing functionality by secondary injection
Line differential protection RED670 2.2 IEC 105
Commissioning manual