ABB REB 551-C3*2.5, Installation And Commissioning Manual, Page: 137 / 148

128
Overview Chapter 15
Testing the protection system
1 Overview
Before start of this process, all individual devices that are involved in the fault clearance process
of the protected object must have been tested as individuals and set in operation. The breaker
must be ready for an open-close-open cycle.
Scheme performance test is the final test that should be carried out before the protected object
is taken into service.
Due to the complexity in combination with already performed tests, it is not necessary to test all
protection functions and all fault types in this process. The most important protection functions
in the terminal for single line to earth fault and phase-phase fault could be used for the test.
The shaping of the test process is dependent on the complexity of the design of the switchyard.
Hereby follows some items which could be used as guidelines.