Siemens 7SR12 Argus User Manual

7SR11 & 7SR12 Performance Specification
©2017 Siemens Protection Devices Limited Chapter 3 Page 14 of 56
1.5 Environmental Performance
1.5.1 General
1.5.1.1 Temperature
IEC 60068-2-1/2
Type
Level
Operating range
-10 °C to +55 °C
Storage range
-25 °C to +70 °C
1.5.1.2 Humidity
IEC 60068-2-78
Type Level
Operational test
56 days at 40 °C and 93 % relative humidity
1.5.1.3 Transient Overvoltage
IEC 60255-5
Type Level
Between all terminals and earth, or
between any two independent circuits
5.0 kV, 1.2/50 µs 0.5j
1.5.1.4 Insulation
IEC 60255-5
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
1.5.1.5 Installation Category
IEC 60255-27
Type
Level
Installation Category (Overvoltage Category)
Class III
1.5.1.6 Pollution
IEC 60255-27
Level
Pollution Degree 2
1.5.1.7 IP Ratings
IEC60529
Type Level
Installed with cover on
Rear IP 10
Front IP 51
Installed with cover removed
Rear IP 10
Front IP 20

Siemens 7SR12 Argus Specifications

General

Brand	Siemens
Model	7SR12 Argus
Category	Protection Device
Language	English