ABB RED670 Relion 670 series, Commissioning Manual

Page: 94 / 308

Prepare the IED for test before testing a particular function. Consider the logic
diagram of the tested protection function when performing the test. All included
functions in the IED are tested according to the corresponding test instructions in
this chapter. The functions can be tested in any order according to user preferences.
Only the functions that are used (
Operation is set to On ) should be tested.
The response from a test can be viewed in different ways:
• Binary outputs signals
• Service values on the local HMI (logical signals or phasors)
• A PC with PCM600 application configuration software in work online mode
All setting groups that are used should be tested.
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.
Please consider the configured logic from the function block to the
output contacts when measuring the operate 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”.
Section 10
1MRK 505 378-UEN A
Testing IED operation
88 Line differential protection RED670 2.2 IEC
Commissioning manual