
106
MNS
D
TR
/
MNS
S
e
rv
ic
e
K
o
n
ser
wacja
i cz
ęści
zami
en
n
e
M
ai
n
ten
a
n
ce
an
d
Sp
ar
e
Par
ts
5
5.18.5 Maintenance and Inspection List
Frequency
Install. category
Item
no.
Work to be performed
Measured, test and limit values, operating and auxiliary
materials
A
B
C
Remarks
1.0
General visual inspection
(repetitive tests)
1.1
External inspection
1.1.1
Verify ambient conditions
Room temperature
35°C
Air, aggressive gases such as SO
2
, H
2
S etc.
1a
6m
X
Unpleasant smell
Relative humidity
50 % at 40°C
Auxiliary heating possi-
bly required
Dust
1.1.2
Check ventilation system (efficiency)
1a
6m
X
Operating room
Air supply to and air discharge from cubicle not obstructed
Switchgear system
max. temperature inside the cubicle:
60°C
Touch fronts with hand
surface, check cubicle
if hand-warm spots are
found
1.1.3
Check condition of enclosure / outside paint
Damaged / corroded
1a
6m
X
Missing parts such as module doors or covers
Ventilation louver dusty / covered
Roof plate contaminated / covered / obstructed / etc.
Fastening of cable compartment doors, side and back panels
Position of withdrawable modules in the cubicle (operating or
isolated position)
Cable / equipment compartment doors closed / open
1.1.4
Accessibility
Escape route
650 mm
1a
6m
X
1.2
Completion of the interior
1.2.1
Equipment compartment
Check filling factor and equipment
Arrangement of modules in accordance with engineering
documents
1a
6m
X
Internal conditions
Contamination, e.g. dust
Clean
1.2.2
Cable compartment / cable terminal compartment
Incoming feeder in accordance with documents (busbar / cable
1a
6m
X
laterally / top / bottom)
Sufficient room / strain relief
Cable routing; bending radii
Personal protection / protective bellows
Protective bellows
1.2.3
Busbar compartment
Check transport connections
Color changes at bolted connections
1a
6m
X
Check using thermo-
vision exposures
Proper installation of cover in partition wall 3
Check busbar supports
Contamination or flashover
Formation of cracks or creeping paths
Visual inspection of the condition of the busbar
insulation
Shrink-on tube brittle
Содержание MNS
Страница 1: ...MNS Rozdzielnica niskiego napięcia Dokumentacja Techniczno Ruchowa Service Manual ...
Страница 116: ......