508A BULLETIN-2008

UL Standard for Safety Industrial Control Panels (COMMENTS DUE: July 28@ 2008)


 

 

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标准号
508A BULLETIN-2008
发布日期
2008年06月27日
实施日期
2013年12月21日
废止日期
中国标准分类号
/
国际标准分类号
/
发布单位
UL - UL
引用标准
12
适用范围
These requirements cover industrial control panels intended for general industrial use@ operating from a voltage of 600 volts or less. This equipment is intended for installation in ordinary locations@ in accordance with the National Electrical Code@ ANSI/NFPA 70@ where the ambient temperature does not exceed 40??(104?? maximum. These requirements also cover industrial control panel enclosures and industrial control panels intended for flame safety supervision of combustible fuel type equipment@ elevator control@ crane or hoist control@ service equipment use@ marine use@ air conditioning and refrigeration equipment@ and for control of industrial machinery including metalworking machine tools@ power press controls@ and plastic injection molding machinery. This equipment consists of assemblies of two or more power circuit components@ such as motor controllers@ overload relays@ fused disconnect switches@ and circuit breakers@ or control circuit components@ such as pushbuttons@ pilot lights@ selector switches@ timers@ and control relays@ or a combination of power and control circuit components@ with associated wiring@ and terminals . These components are mounted on@ or contained within@ an enclosure@ or are mounted on a sub-panel.




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