Section 13 Commissioning And Maintenance Of The Fault Clearing System; Commissioning Tests; Periodic Maintenance Tests - ABB Relion 670 Series Commissioning Manual

1MRK 511 403-UEN E
Section 13
13.1

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.
The final testing includes primary verification of all directional functions where load currents is
checked on the local HMI and in PCM600. 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 breaker must be checked individually and it must be
verified that the other involved breakers are not tripped at the same time.
13.2

Periodic maintenance tests

The periodicity of all tests depends on several factors, for example the importance of the
installation, environmental conditions, simple or complex equipment, static or
electromechanical IEDs, and so on.
The normal maintenance praxis of the user should be followed. However, ABB's
recommendation is as follows:
Every second to third year
• Visual inspection of all equipment.
• Removal of dust on ventilation louvres and IEDs if necessary.
• Periodic maintenance test for protection IEDs of object where no redundant protections
are provided.
Every four to six years
• Periodic maintenance test for protection IEDs of objects with redundant protection
system.
Bay control REC670
Commissioning manual
Commissioning and maintenance of
the fault clearing system
First maintenance test should always be carried out after the first half year of
service.
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Commissioning and maintenance of the fault clearing system
Section 13
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