Ormazabal velatia cpg.1, General Instructions Manual, Page: 16 / 44

General Instructions
Service conditions
16
cpg.1
GIS-type medium-voltage switchgear with full insulation in gas,
up to 38 kV, in accordance with IEEE Standards
IG-197-US version 02; 07/11/2019
3 Service conditions
Installation Indoor
Maximum ambient temperature 104 °F (+ 40 °C)
Minimum ambient temperature - 13 °F (- 25 °C)
Maximum mean ambient temperature, measured over a 24-hour period 95 °F (+ 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 height above sea level 3,250 feet (1,000 m)
Solar radiation Negligible
Ambient air pollution (dust, smoke, corrosive and/or flammable gases, vapours or salt) Insignificant
Vibrations caused by causes external to the switchgear or by seismic movements Insignificant
The specifications refer to the section "Normal
service conditions for indoor cubicles" in the
IEC 62271-1 standard 'Common specifications
for high voltage cubicle standards”.
For special service conditions: ambient
temperature above 104 °F (+ 40 °C), installation
and/or transport over 3,250 ft (1000 m) above sea
level, significant pollution level, or others different
to those described, check with Ormazabal.