IG-284-EN version 03; 06/05/2020
11
General Instructions
cgm
.800: Medium-voltage switchgear with integrated insulation in SF
6
gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
General description
1.6. Operating conditions
Installation
Indoor
Maximum ambient temperature
+ 40 °C
Minimum ambient temperature
- 5 °C/- 30 °C*
Maximum average ambient temperature, measured over a 24-hour period
+ 35 ºC
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
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
* Storage: - 40 °C.
Table 1.7.
Operating conditions
The specifi cations refer to the section "Normal service
conditions for indoor cubicles" 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
.
Summary of Contents for velatia cgm.800
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