Commissioning Tests - ABB REL670 Installation And Commissioning Manual

Commissioning tests

Chapter 12
Commissioning and maintenance of
the fault clearing system
2 Commissioning tests
During commissioning all protection functions shall be verified with the setting values used at
each plant. The commissioning tests must include verification of all circuits by green-lining the
circuit diagrams and the configuration diagrams for the used functions.
Further, the settings for protection functions are tested and recorded carefully as outlined for the
future periodic maintenance tests described below.
The final testing will include primary verification of all directional functions where load currents
is checked on the IED through the LHMI or the PCM600 tool. The amplitudes and angles of all
currents and voltages should be checked and the symmetry verified.
Directional functions have information about the measured direction and for example measured
impedance. These values must be checked and verified as correct with the export or import of
power available.
Finally final trip tests must be performed. This involves activation of protection functions or
tripping outputs with the circuit breaker closed and the tripping of the breaker verified. When
several breakers are involved each must be checked individually and it must be verified that the
other involved breakers are not tripped at the same time.
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