UL 1676:2001 pdf download Conductive-Path and Discharge-Path Resistors for Use in Radio-, Video-, or TeIevision -Type AppIiances
1 Scope
1.1 These requirements cover discharge-path resistors that are intended to be connected between theantenna and the supply circuit of a radio-, video-, or television-type appliance. The resistors are intendedto reduce the risk of fire or electric shock due to the buildup of a static electrical charge on the antennaconnected to the appliance. These resistors are:
a) Rated 1/2 W or greater,
b) Rated 480 ks2 to 12 M$2 for use in a 50/60 Hz, 125 V or less circuit, andc) Rated 960 k22 to 12 Ms2 for use in a 50/60 Hz, 126 – 250 V circuit
1.2 These requirements cover conductive-path resistors, of any rating, intended to be connected betweenlive parts and accessible conductive parts of a radio-, video-, or television-type appliance.
1.3 Deleted October 16, 2001.
2 General
2.1 Units of measurement
2.1.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.
2.2 Undated references
2.2.1 Any undated reference to a code or standard appearing in the requirements of this standard shallbe interpreted as referring to the latest edition of that code or standard.
3 Glossary
3.1 For the purpose of this Standard, the following definitions apply.
3.2 Relocated as 3.4 0ctober 16, 2001.
3.2.1 CLASS I PRODUCT- A construction in which rotection provided to reduce the risk of electricshock does not rely on basic insulation only, but which includes an additional means of protection. Theadditional means of protection provides for the connection of accessible current-carrying parts to thegrounding conductor of the equipment so the accessible parts do not present a risk of electric shockdue to breakdown of the basic insulation.
3.2.1 added October 16,2001
3.2.2 CLASS II PRODUCT- A construction in which protection provided to reduce the risk of electricshock does not rely on basic insulation only, but in which additional means of protection, such asdouble insulation or reinforced insulation, are provided when no provision for grounding is provided3.2.2 added October 16,2001
3.2.3 CLEARANCE- The shortest distance through air between two conductive parts3.2.3 added October 16,2001