Set and configure the function(s) before the testing can start. Most functions are
highly flexible in that it permits a choice of functional and tripping modes. The
various modes are checked at the factory as part of the design verification. In
certain cases only modes with a high probability of coming into operation need to
be checked when commissioned to verify the configuration and settings.
Requirements for testing the function.
•
Calculated settings
•
Valid configuration diagram for the IED
•
Valid terminal diagram for the IED
•
Technical manual
•
Three-phase test equipment
Content of the technical manual.
•
Application and functionality summaries
•
Function blocks
•
Logic diagrams
•
Input and output signals
•
A list of setting parameters
•
Technical data for the function
The test equipment should be able to provide a three-phase supply of currents (and
for some START functions also voltage). The magnitude and angle of currents
(and voltages) should be possible to vary. Check that the IED is prepared for test
before starting the test session. Consider the logic diagram of the function when
performing the test.
The response from a test can be viewed in different ways.
•
Binary output signals
•
Service values in LHMI (logical signal or phasors)
•
A PC with PCM600 (configuration software) in debug mode
4.2
Activating test mode
The IED shall be put into test mode before testing. Test mode blocks all functions
in the IED and the individual functions to be tested can be unblocked to prevent
unwanted operation caused by other functions. In this way, it is possible to test
slower back-up measuring functions without the interference from faster measuring
functions. Test mode is indicated when the yellow Start LED flashes.
Procedure
Section 4
1MRS756801 A
Testing IED operation
24
630 series
Commissioning Manual
