5
1.4 Applied standards
WS switchgear units are
• metal-enclosed
• SF
6
insulated
• type-tested
• tested for internal arc faults
WS switchgear may only be opera-
ted under normal operating conditi-
ons according to the specifications
EN 60694 or the IEC Publication
60694.
Operation under conditions deviating
from these is only admissible upon
consultation with and approved by
the manufacturer.
Ambient conditions (acc. to IEC 60 694)
Temperature class ”Minus 5 indoors”
3)
Min./max. ambient temperature °C -5 / 40
3)
Average value over 24 hours (max.) °C ≤ 35
3)
Average rel. air humidity: 24 h / 1 month % ≤ 95 / ≤ 90
3)
Max. installation altitude above sea level m ≤ 1,000
3)
3)
Higher values possible on request
4)
See section 4
Insulating gas (acc. to IEC 60 376)
Type Sulphurhexafluorid (SF
6
)
Rated pressure p
re
at 20 °C MPa 0.03-0.075
4)
Environmental and operating conditions
Degree of protection against
accidental contact and
foreign objects
(acc. IEC 60529)
Main electric circuits IP65
Drives IP2X
1)
Low-voltage cabinet IP3X
1)
Cable connection
compartment IP3X
2)
1)
optional IP 52
2)
optional
Designation IEC standard EN standard
Switchgear IEC 62271-200 EN 62271-200
IEC 60694 EN 60694
Behaviour in case of internal arc faults IEC 60298 EN 60298
Circuit-breaker IEC 62271-100 EN 62271-100
Earthing switch IEC 62271-102 EN 62271-102
Disconnector IEC 62271-102 EN 62271-102
Current transformer IEC 60044-1 EN 60044-1
Voltage transformer IEC 60044-2 EN 60044-2
Voltage detection systems IEC 61243-5 EN 61243-5
Protection against accidental
contact, foreign objects and water IEC 60529 EN 60529
Installation IEC 61936-1 HD 637 S1
Operation of electrical equipment – EN 50110
WS switchgear units meet the following standards and regulations:
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