UL 1414-2020 pdf free download.Capacitors and Suppressors for Radio- and Television-Type Appliances.
9 Flammability Test Section
9 effective May 1 , 2007
9.1 For a polymeric enclosure material that does not comply with 6.1 (a), three samples of the component are to be subjected to three 1 5 s applications of a test flame, the period between applications of the flame being 1 5 s.
The material shall not continue to flame for more than 1 5 s after the first and second applications, and not more than 60 s after the third application.
9.2 For the test, a supply of gas having a heating value of approximately 1 000 Btu/ft 3 (37.6 MJ/m 3 ) at normal pressure and a 3/8-in (9.5-mm) diameter Tirrill burner are to be used. The test flame is to be 3/4 in (1 9 mm) high with the air ports of the burner closed.
9.3 Each component is to be mounted in a position that is most conducive to the ignition of the component and that is permitted by the physical construction of the component. The tip of the test flame is to be applied at any location on the body of each component.
10 Dielectric Voltage-Withstand Test Section 1 0 effective May 1 , 2007
10.1 As-received samples 1 0.1 .1 Ten components shall withstand without indication of unacceptable results at the sensitivity setting specified in 1 0.3.2 for 1 min a sinusoidal potential, having a frequency of 60 Hz, applied from lead to lead. The potential is to be 4 kV rms for Class Y1 capacitors, and 2 kV rms for all other components.
10.2 Tested samples 1 0.2.1 Where specified, components subjected to tests in other sections of this Standard shall withstand without indication of unacceptable results at the sensitivity setting specified in 1 0.3.2 for not less than 1 min a sinusoidal potential, having a frequency of 60 Hz, applied, unless specified otherwise, between leads and between both leads of the component connected together and metal foil wrapped closely around the enclosure. The potential is to be 4 kV rms for Class Y1 capacitors, and 2 kV rms for all other components.
10.3 Test method 1 0.3.1 The test potential is to be obtained from a transformer that provides a variable output voltage. The applied potential is to be increased at a uniform rate, by manual or automatic means, from zero to the specified test value within 5 s.UL 1414 pdf download.