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8. Commissioning
W ARNING
For ENA version: do not access the area behind or
alongside the sw itchgear when it is energised or
being energised.
W ARNING
All operations for putting into service must be
carried out either by ABB personnel or by ABB
trained personnel.
Should the operations be prevented, do not force
the mechanical interlocks but make sure that the
operating sequence is correct.
The switchgear is shipped finished and checked.
Before putting the switchgear into service, all the
apparatus installed must be checked and tested as
prescribed below.
Test
extent
and
test
international
standards,
manufacturer
recommendations.
procedures are to be established by the plant
technical manager.
8.1 Preliminary operations
Make sure there is no evident damage and remove
any
foreign
bodies
connections forgotten during installation)
Make
sure
that
segregations (if supplied) and the external closing
panels are present.
Make sure that any insulating barriers or hoods
previously removed have been remounted.
Check
connection
continuity
(see table)
Make sure that the sheets have been properly
mounted and have not been deformed.
Make sure that all the metallic frame screws have
been properly tightened.
Thoroughly clean the sheets and the insulating
components by means of brushes and clean, dry
cloths. Avoid any compressed air blasts unless
these are dry and free of lubricating-oil.
Remove dust and dirt from any air vent grid and
ventilation ducts.
Check tightness and continuity of the switchgear
earthing busbar as well as the earthing connection.
Make sure that the Vmax circuit -breaker vacuum
interrupters have not been accidentally damaged.
Feed the auxiliary circuits.
Make sure that the value of the circuit power
supply ranges between 85% and 110% of the
apparatus rated voltage value. If all the above
tests are successful, carry out the inspection and
testing procedures indicated in
Note: Should any problem arise, please do not
hesitate to contact the ABB Quality Department.
methods
are
given
local
regulations
(such
as
tools
both
the
internal
tightness
and
power
in paragraph 6.3.
(chapter
8.2).
8.2 Measurements and tests
Tests at site are mandatory prior energization of the
switchgear.
The main purpose of site tests in general is to make
sure the switchgear is ready for energization, not to
repeat the factory testing and confirm the factory
results.
For manufacturer's recommendation of test scope and
method please contact ABB Service Department. After
performing the tests, make sure that all normal service
conditions are restored.
W ARNING
The check is only successful if all the above tests
have been passed successfully.
If the inspection gives negative results, do not put
the
apparatus
contact the ABB Customer Service Department.
Only
energise
b y
disconnectors in the OFF position and with the
and
circuit-breaker open.
Further
or
test
metal
circuit
into
service
but,
if
the
sw itchgear
necessary,
w ith
all
63
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