Reference Manual

Environmental Capabilities

3.7.2 Climatic Conditions

The severity of these requirements are in conformity with: IEC 721-3-3

classes 3K3/3Z2/3Z4. and ETS 300 019-1-3 Class 3.1.

Table 7

Environmental Unit Value

Parameters Normal

Condition

Safe Function Non-

destruction

Temperature



+5 - +40 0 - +45 -10 - +55

Relative humidity % 5-85 5-90 5-90

3.7.3 Biological Conditions

Requirements

There are no requirements for this condition.

3.7.4 Chemically Active Substances

The severity of these requirements is in conformity with: IEC 721-3-3

classes /3C2(3C1)/. and ETS 300 019-1-3 Class 3.1.

Note: The values are average yearly levels of airborne

contaminants that can be accepted. It is assumed that one of

the contaminants is dominant at each site, and that the other

is present in insigniﬁcant amounts.

3.7.5 Mechanically Active Substances

The severity of these requirements is in conformity with: IEC 721-3-3

class /3S2/. and ETS 300 019-1-3 Class 3.1.

3.7.6 Mechanical Conditions

The severity of these requirements is in conformity with: IEC 721-3-3

class/3MI/. and ETS 300 019-1-3 class 3.1.

20 (34)

EN/LZT 720 0024 R2A

2002-11-01