International Electrotechnical Commission
Glossary

ENSELV circuit, Safety Extra Low Voltage Circuit 
secondary circuit that is so designed and protected that under normal operating conditions and single fault conditions, its voltages do not exceed a safe value

Note 1 to entry: For commercial, industrial and telecommunication applications, the SELV voltage limits provided in IEC 60950-1:2005 are applicable. For household applications, the SELV voltage limits in IEC 60335-1:2010 shall be used.

Note 2 to entry: The limit values of voltages under normal operating conditions and single fault conditions (see 1.4.14 of IEC 60950-1:2005) are specified in 2.2 of IEC 60950-1:2005. See Table 1A of IEC 60950-1:2005.

Note 3 to entry: This definition of a SELV Circuit differs from the term “SELV system” as used in IEC 61140.


TC/SC:105Terms     Info     Publications
Published in:IEC 62282-5-1, ed. 2.0 (2012-09) Terms     Info
Reference number:3.24
Source:IEC 60950-1:2005, definition 1.2.8.8 (modified)

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