7SR21 & 7SR22 Performance Specification
Unrestricted © 2013 Siemens Protection Devices Limited
Page 17 of 68
1.4
Environmental Performance
1.4.1 General
1.4.1.1
Temperature
IEC 60068-2-1, IEC 60068-2-2
Type
Level
Operating range
- 10
°
C to + 55
°
C
Storage range
- 25
°
C to + 70
°
C
1.4.1.2
Humidity
IEC 60068-2-30, IEC 60068-2-78
Type
Level
Operational test (Indoor)
56 days at +40
°
C and 95 % relative humidity (r.h.)
Operational test (Outdoor)
6 cycles at 24 h b25
°
C (97% r.h.) and +55
°
C (93% r.h.)
1.4.1.3
Transient Overvoltage
IEC 60255-5
Type
Level
Between all terminals and earth, or
between any two independent circuits
5.0 kV, 1.2/50
m
s 0.5j
1.4.1.4
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
1.4.1.5
IP Ratings
Type
Level
Installed with cover on
IP 51 from front of relay
IP 10 from rear of relay
Installed with cover removed
IP 20 from front of relay
IP 10 from rear of relay
Summary of Contents for Argus 7SR21
Page 1: ...Energy Management 7SR21 7SR22 Argus Overcurrent Relay Reyrolle Protection Devices ...
Page 2: ......
Page 4: ...Contents 7SR11 and 7SR12 Page 2 of 2 2018 Siemens Protection Devices Limited ...
Page 185: ...7SR210 Settings Guide Unrestricted 2018 Siemens Protection Devices Limited Page 61 of 61 ...
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Page 643: ...Unrestricted ...