Preparing The Ied To Verify Settings - ABB Relion 670 Series Commissioning Manual

Section 10
Testing IED operation
10.1.2

Preparing the IED to verify settings

If a test switch is included, start preparation by making the necessary connections to the test
switch. This means connecting the test equipment according to a specific and designated IED
terminal diagram.
Put the IED into the test mode to facilitate the test of individual functions and prevent unwanted
operation caused by other functions. The busbar differential protection is not included in the test
mode and is not prevented to trip during the test operations. The test switch should then be
connected to the IED.
84
This IED is designed for a maximum continuous current of four times the rated
current.
All references to CT and VT must be interpreted as analog values received from
merging units (MU) via IEC/UCA 61850-9-2LE communication protocol, analog
values received from the transformer input module, or analog values received from
the LDCM.
When using a MU test simulator, make sure it is set to the correct SVID and that the
system frequency is set to the same as in the IED.
Please observe the measuring accuracy of the IED, the test equipment and the
angular accuracy for both of them.
Consider the configured logic from the function block to the output contacts when
measuring the trip time.
After intense testing, it is important that the IED is not immediately restarted,
which might cause a faulty trip due to flash memory restrictions. Some time must
pass before the IED is restarted. For more information about the flash memory,
refer to section "Configuring the IED and changing settings".
If the IED is used together with a merging unit and no time synchronization is
available, for example, in the laboratory test, the IED will synchronize to the SV data
stream. During the re-synchronization, the protection functions will be blocked
once a second for about 45 ms, and this will continue for up to 10 minutes. To
avoid this, configure PTP (IEEE 1588) to
unit is configured.
© Copyright 2017 ABB. All rights reserved
On for the access point where the merging
Line distance protection REL670
1MRK 506 371-UUS E
M11741-2 v12
Commissioning manual