Siemens 7SR18 Solkor - Environmental Performance; General

7SR18 Performance Specification
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1.6 Environmental Performance
1.6.1 General
1.6.1.1 Temperature
IEC 60068-2-1
Type Level
Operating range
-10 °C to +55 °C
Storage range
-25 °C to +70 °C
1.6.1.2 Humidity
IEC 60068-2-30, IEC 60068-2-78
Type Level
Operational test (Indoor)
56 days at 40 °C and 93 % relative humidity
Operational test (Outdoor)
6 cycles at 24 h between +25 °C (97% r.h.) and +55 °C (93% r.h.)
1.6.1.3 Transient Overvoltage
IEC 60255-27
Type Level
Between all terminals and earth, or
between any two independent circuits
5.0 kV, 1.2/50 µs 0.5 j
1.6.1.4 Insulation Class
IEC 60255-27
Type Level
Insulation Class when mounted in normal position of use Class I
Insulation
IEC 60255-27
Type Level
Between any terminal and earth
2.5 kV AC RMS for 1 min
Between independent circuits
Across normally open contacts 1.0 kV AC RMS for 1 min
1.6.1.5 Installation Category
IEC 60255-27
Type Level
Installation Category (Overvoltage Category) Category III
1.6.1.6 Pollution Degree
IEC 60255-27
Level
Pollution Degree when mounted in its normal position of use. Pollution Degree 2