This is being cleared up in the third edition of IEC 60950. It has been
undefined
in previous versions of the standards. Agencies have each chosen values to use,
but
you should be able to argue for the following since most countries have already
agreed to this proposal in their voting on the
Hello Group,
Just to add my two cents...
Let us not forget Clause 2.2.7.2 which (as I understand it) indicates that
for Clearences for Primary Circuits (Table 3); ELV, SELV, and TNV circuits
are considered to have 0 volts.
This clause seems to indicate that while determining the working voltage
Dear group,
I have a question on defining the RATED VOLTAGE that should be applied to
TNV in UL1950 Clause 6.3.3.1 Additional Test for separation between
telecommunication network and earth (Figure 17) for a Class III device that
operates from an external nominal 12VDC (SELV) Listed Class II
3 matches
Mail list logo
