SIS SS EN 50 028-1989
防爆电气设备．包装

Electrical apparatus for potentially explosive atmospheres — Encapsulation "m"

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标准号

SIS SS EN 50 028-1989

发布

1989年

发布单位

SE-SIS

当前最新

SIS SS EN 50 028-1989

 

 

适用范围

1.1 This European Standard contains the specific requirements for construction and testing of electrical apparatus, parts of electrical apparatus and Ex components in the type of protection encapsulation "m", intended for use in potentially explosive atmospheres. 1.2 This European Standard applies to electrical apparatus, parts of electrical apparatus and Ex components which have rated voltages not exceeding 11 kV. 1.3 This European Standard supplements European Standard EN 50 014 'General requirements', with the following exceptions. Clauses of El jropean Standard EN 50 014 which are not applicable 4.1 Maximum surface temperature (for Ex components) 5.2 Time delay before opening an enclosure 6.1 Definition of the enclosure material 6.2 (first Temperature index TI paragraph) 6.4 Threaded holes in enclosures of plastic material 8 Fasteners 9 Interlocking devices 15 Cable and conduit entries 17 Switchgear 18 Fuses 20.2 Warning label for luminaires 22.4.3.1 Impact tests (for Ex components) 22.4.4 Tests for degree of protection for enclosures 22.4.8 Tests in explosive mixtures 22.4.9 Tests of clamping of non-armoured cables in cable entries 22.4.10 Tests of clamping of armoured cables in cable entries

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