ABB Relion REB500, Applications Manual

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Section 6
1MRK 505 353-UEN
BP-Additions to base documentation
48 Application Manual
Bay protection functions REB500
6.3 Commissioning
The following information about bay protection functionality applies in addition to
the Commissioning Manual of REB500.
6.3.1 Regulations
DANGER: Note that when commissioning REB500 the analogue
input signals act on the bay protection functions as well as the sta-
tion functions. Especially when the commissioning subsequently
(e.g. following additions to the system), care must be taken to pre-
vent part of the system which are already in operation from mal-
operating. Corresponding precautions must be taken (interrupting
tripping circuits, blocking system functions, disabling auxiliary
tripping relays).
6.3.2 Additional checks for bay protection REB500
The following checks described below are necessary to commission the bay protec-
tion function (in addition to the function test of REB500 station protection).
6.3.2.1 Commissioning a new station without any HV
When commissioning a new station or a station, which is not energized, the busbar
and breaker failure protection functions and the bay protection functions (line pro-
tection) can be commissioned separately, although certain tests do overlap and
should be coordinated to save time.
Note also that, for example, injecting current in the analog input of one feeder can
trip other feeders via the intertripping logic. This can, however, be prevented by
taking the appropriate precautions (interrupting tripping circuits, blocking station
protection functions or blocking tripping relays).