Classification of chemically active substances (EN 60721-3-3)
Environmental parameter
Class
3C1R
3C1L
3C1
3C2
3C3
3C4
a)
Sea salt
No
No
No
Salt
fog
Salt
fog
Salt
fog
b)
Sulphur dioxide
[mg/m
3
]
0,01 0,1 0,1 1,0 10 40
c)
Hydrogen sulphide
[mg/m
3
]
0,0015 0,01 0,01 0,5 10 70
d)
Chlorine [mg/m
3
]
0,001 0,01 0,1 0,3 1,0 3,0
e)
H
ydrochloric acid
[mg/m
3
]
0,001 0,01 0,1 0,5 5,0 5,0
f)
H
ydrofluoric acid
[mg/m
3
]
0,001 0,003 0,003 0,03 2,0 2,0
g)
Ammonia [mg/m
3
]
0,03 0,3 0,3 3,0 35 175
h)
Ozone [mg/m
3
]
0,004 0,01 0,01 0,1 0,3 2,0
i)
Nitric oxide (expressed in equivalent values of
nitrogen dioxide) [mg/m
3
]
0,01 0,1 0,1 1,0 9,0 20
Places where atmosphere is strictly monitored and
regulated (“clean spaces” category)
X
Places where atmosphere is permanently
monitored
X
Places located in rural and urban
regions where
industrial activities are few and where traffic
is moderate
X
Places located in urban regions with industrial
activities and/or considerable traffic
X
Places in proximity to industrial sources with
chemical emissions
X
Places located in industrial installations.
Emissions of highly concentrated chemical
pollutants
X
The KEOR HPE UPS 60÷160 kVA is designed to be installed in an environment that meets the
following classifications.
K Climatic conditions
In accordance with the technical
specification
B Biological conditions
3B1 (EN 60721-3-3)
C Chemically active substances
3C2 (EN 60721-3-3)
S Mechanically active substances
3S2 (EN 60721-3-3)
In the event that the environmental conditions of the installation room do not comply with the
specified requirements, additional precautions must be taken to reduce excessive values to the
specified limits.
To Next Page
Loading...
