General instructions
Storage
IG-136-EN version 10; 23/06/2016
16
cgm.3 system
Fully SF6 gas insulated medium voltage switchgear up to 40.5 kV in accordance with IEC Standards
3 Storage
If it needs to be stored, the equipment must be placed on
dry ground or on top of damp-proof insulating material, still
in its original packaging.
After prolonged storage, clean all the insulating parts
carefully before commissioning the equipment. The
enclosure should be cleaned with a clean, dry lint-free
cloth.
Storage must always be INDOORS, with the following
conditions recommended:
1. Ambient air temperature should not exceed 40 ºC and
its mean value, measured in a period of 24 hours,
should not exceed 35 ºC.
2. The ambient air temperature should not drop below
- 5 ºC. There are also cubicles with storage
temperature up to - 40 ºC.
3. The switchgear must be protected from direct solar
radiation.
4. Altitude, both in transport and in storage, must not
exceed 2000 m.
5. The environmental air must not have any significant
contamination from dust, smoke, corrosive and/or
inflammable gases, vapours or salt.
6. The switchgear must be protected from the rain, and
the humidity conditions should be as follows:
a) the mean relative humidity value, measured over
a period of 24 hours, must not exceed 95%.
b) the mean water steam pressure value, measured
in a period of 24 hours, must not exceed 2.2 kPa.
c) the mean relative humidity value, measured over
a period of one month, must not exceed 90%.
d) the mean water steam pressure value, measured
in a period of one month, must not exceed
1.8 kPa.
7. During transport, vibrations caused by external
factors or seismic movements must be insignificant.
Any other conditions must be made known
beforehand, since the equipment
must be factory-set at atmospheric pressure in
the nal destination.
Otherwise the gauge may show an erroneous
reading, even though
the unit's interior pressure value is correct.
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