UL SUBJECT 2557-2008
膜片开关调查大纲.发布编号:1

OUTLINE OF INVESTIGATION FOR MEMBRANE SWITCHES Issue Number: 1

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标准号

UL SUBJECT 2557-2008

发布日期

2008年05月28日

实施日期

废止日期

无

中国标准分类号

L22

发布单位

美国保险商实验所

引用标准

ASTM D257 ASTM D374 ASTM D1000 ASTM F1578 ASTM F1595 ASTM F1596 ASTM F1598 ASTM F1661 ASTM F1662 ASTM F1663 ASTM F1680 ASTM F1683 ASTM F1689 ASTM F1762 ASTM F1812 ASTM F1895 ASTM F1995 ASTM F1996 ASTM F2072 ASTM F2592 UL 746A UL 746B UL 746C UL 746E UL 74

适用范围

1.1 These requirements apply to membrane switches actuated by human activity, via a membrane or sensing substrate, to operate or control appliances and electrical equipment. The membrane switch electrical rating not to exceed 30 Vrms and power not greater than 100 VA. 1.2 When this outline references ²switches² it shall mean ²membrane switches² unless specifically indicated. 1.3 Membrane switches which incorporate additional control functions governed by the switch function are within the scope of these requirements. Additional control functions shall be evaluated for their suitability using the applicable standards for the application. 1.4 These membrane switches are intended to be operated by a person, via a membrane or by actuating a sensing substrate. 1.5 These requirements cover the indirect actuation of the switch when the operation of the actuating member or sensing unit is provided by a remote control or a part of an appliance or equipment such as a door. 1.6 Embedded components are evaluated with regards to their safety and application to the membrane switch construction. The acceptability of an embedded component in the membrane switch shall be considered with regards to construction and performance requirements in the end product final application.