7PG21 Solkor Rf Commissioning
©2012 Siemens Protection Devices Limited Chapter 6 Page 8 of 21
Fig.2 Connections for Overall Fault setting Tests by Primary Injection
2.8 Circuit-breaker tripping tests
If it has not been possible to make the tripping-tests described under "Overall fault Setting tests" perform the
following test:
Insert the d.c. supply links and fuses, and operate the relay by hand; tripping should occur only when the trip-links
are inserted.
2.9 Stability Tests
The purpose of these tests is to ensure that the pilots are correctly connected and that the current transformers at
each end are starred correctly relative to one another in order to permit stabilisation of the protection under
through fault conditions.
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