Ormazabal cgm.3 system Series - Operating Conditions

General description
General Instructions
IG-136-EN version 10; 23/06/2016
13
cgm.3 system
Fully SF6 gas insulated medium voltage switchgear up to 40.5 kV in accordance with IEC Standards
1.6 Operating conditions
Installation Indoor
Maximum ambient temperature + 40 ºC
Minimum ambient temperature – 5 ºC / - 30 ºC
(a)
Maximum mean 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 flammable gases, vapours or
salt)
Insignificant
(b)
Vibrations caused by causes external to the switchgear or by seismic movements Insignificant
(a)
1000 m for metering function and non-shielded connectors. For higher installation altitudes, check with Ormazabal.
(b)
Unless indicated otherwise, It is assumed that there are no specific user requirements.
The specications refer to the section "Normal
service conditions for indoor cubicles" in
Standard IEC 62271-1 "Common specications
for high-voltage cubicles".
For special service conditions: ambient
temperature above + 40 ºC, installation over
2000 m above sea level, signicant pollution
level, or others different to those described,
check with Ormazabal.