Ormazabal cgmcosmos-2lv, Общее руководство по инструкции

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Maintenance
42
General instructions
cgmcosmos
system
Medium voltage switchgear and control gear, fully insulated in SF
6
gas up to 24 kV with external cable test device
IG-257-EN version 01; 03/02/2016
7 Maintenance
For safety reasons, maintenance operations
performed directly on the driving mechanism
must be performed WITHOUT any actuating
lever inserted.
The live parts of the
cgmcosmos
cubicle main circuit
and switching equipment do not require inspection or
maintenance, as they are completely insulated in SF
6
and
therefore unaffected by the external environment. Class
E2 electrical endurance tests mean that the breaking
components are maintenance free.
The operating mechanism for the
cgmcosmos
system
switching equipment does not require lubrication for correct
operation throughout its estimated lifetime, according to
the service conditions specified in IEC 62271-1.
These mechanisms must be inspected when used under
extreme conditions (dust, salt, pollution). It is advisable to
carry out at least one operation during the inspections.
Components manufactured from galvanised sheet steel
have been painted to ensure their resistance to corrosion.
Any scratches, dents or similar on them must be repaired
to prevent corrosion.
7.1 Voltage presence indicator test
To test the
ekor .vpis
o
ekor .ivds
, voltage presence indicator,
connect it to a 230 V
ca
power supply. To do this, disconnect
the
ekor
.vpis
o
ekor
.ivds
unit from the cubicle, and, using
4 mm terminals, apply the voltage between the test point
for the phase to be checked and the earth test point.
No polarity is defined for 230
ac
V, so either
the phase or neutral conductor can be
connected.
If a flashing signal is observed, the device is working
correctly. In order to properly test the
ekor .vpis
o
ekor .ivds
,
this check should be carried out for all three phases.
The voltage presence indication is not
sufficient to ensure that the installation
has been disconnected from the electricity
supply. Before accessing the cable
compartments, it is necessary to confirm that
the feeder is connected to earth.
The
ekor .vpis
o
ekor .ivds
voltage indicator can be replace
if required. To do so, loosen until you remove the two
screws on the top right and bottom left of the indicator
using a medium size Philips screwdriver. The
ekor .vpis
o
ekor .ivds
unit can then be disconnected from the base
without needing to power down the line.
Fig. 7.1 ekor
.vpis
connection mode