IG-123-EN version 11; 23/07/2021
17
General instructions
cpg
.0: GIS medium-voltage switchgear,
gas insulated, up to 40.5 kV,
in accordance with IEC Standard
Normal service conditions(a)
3. Normal service conditions
(a)
Installation
Indoor
Maximum ambient temperature
+ 40 °C
Minimum ambient temperature
- 5/- 15/- 25 °C
Maximum mean ambient temperature, measured over a 24-hour period
+ 35 °C
Maximum mean relative humidity, measured over a 24-hour period
< 95 %
Maximum mean vapour pressure, measured over a 24-hour period
22 mbar
Maximum mean vapour pressure, measured over a 1-month period
18 mbar
Maximum height above sea level
1000 m
Solar radiation
Negligible
Ambient air pollution (dust, smoke, corrosive and/or fl ammable gases, vapours or salt)
Insignifi cant
Vibrations caused by causes external to the switchgear or by seismic movements
Insignifi cant
(a) For special service conditions (ambient temperature above + 40°C, installation, storage or transport altitude over 1000 m above sea level, signifi cant
pollution level, or others diff erent to those described), check with
Ormazabal
.
Table 3.1.
Normal service conditions
The specifi cations refer to the section "Normal
service conditions for indoor cubicles" in Standard
IEC 62271-1 "Common specifi cations for high-voltage
cubicles".
Summary of Contents for velatia cpg.0
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