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 Enabled) 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.
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 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”.
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
Section 10 1MRK 504 165-UUS -
Testing IED operation
90 Transformer protection RET670 2.2 ANSI
Commissioning manual
To Next Page
Loading...
Need help?
General
