Ormazabal velatia cgmcosmos, General Instructions Manual

Page: 14 / 120

1.6. Operating conditions
Installation Indoor
Maximum ambient temperature
+ 40 °C
Minimum ambient temperature
- 5 °C/- 30 °C (a)
Maximum average ambient temperature, measured over a 24-hour period
+ 35 °C
Maximum mean relative humidity, measured over a 24-hour period
< 95%
Maximum mean relative humidity, measured over a 1-month period
< 90%
Maximum mean vapour pressure, measured over a 24-hour period
2.2 kPa
Maximum mean vapour pressure, measured over a 1-month period
1.8 kPa
Maximum height above sea level 2000 m
(b)
Solar radiation
Negligible
Pollution due to corrosive and/or fl ammable gases
Insignifi cant
Vibrations due to seismic movements or caused by causes external to the switchgear Negligible
(a)
Storage: - 40 °C
(b) For the auxiliary services power supply modular cubicle,
cgmcosmos
-a, maximum altitude above sea level 1000 m.
Table 1.7.
Operating conditions
The specifi cations refer to the section "Normal service
conditions for indoor switchgear" in the IEC 62271-1
standard "Common specifi cations for high-voltage
cubicles".
For special service conditions: ambient temperature
above + 40ºC, installation between 2000 and 4000 m
above sea level, signifi cant pollution level, or others
diff erent to those described, check with Ormazabal .
IG-078-EN version 12; 23/04/2020
14
General description General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard