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Chapter 3) 7SR17 Rho Performance Specification
1.4
Environmental Performance
1.4.1
General
Temperature
1.4.1.1
IEC 60068-2-1/2
Type
Operating range
Storage range
Humidity
1.4.1.2
IEC 60068-2-78
Type
Operational test
Transient Overvoltage
1.4.1.3
IEC 60255-5
Type
Between all terminals and earth, or
between any two independent circuits
Insulation
1.4.1.4
IEC 60255-5
Type
Between any terminal and earth
Between independent circuits
Across normally open contacts
IP Ratings
1.4.1.5
IEC60529
Type
Installed with cover on
Installed with cover removed
Chapter 3) Page 14 of 46
Level
-10 C to +55 C
-25 C to +70 C
Level
56 days at 40 C and 93 % relative humidity
Level
5.0 kV, 1.2/50 s 0.5j
Level
2.5 kV AC RMS for 1 min
1.0 kV AC RMS for 1 min
Level
Rear
IP 20
Front
IP 51
Rear
IP 20
Front
IP 20
©2014 Siemens Protection Devices Limited
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