Gary,
between TNV2 and PE (ground) the only requirement is functional insulation.
For max TNV2 (120Vdc) the following spacings apply:
clearance: 0,6mm (table 2K last column)
creepage: 0,6 up to 2,4mm depending on the PD and MG
(table 2L)
eg for PD 2 MG IIIa 1,5mm
relevant document: IEC 60950 3.ed 1999
best regards
helmut hintz
----------
Von: Gary.McInturff / unix (gary.mcintu...@worldwidepackets.com)
An: emc-p...@ieee.org
Betreff: TNV-2 to SELV Spacing
Datum: Donnerstag, 15. Juni 2000 16:44
Temporarily without my standard, and need a spacing requirement.
Seems to me that over surface it was 1.4 mm or 1.0 mm through air, but it
also seems to me that it was contingent upon whether or not the secondary
was grounded or not. How about TNV-2 to ground?
As always there is no room, no time and we need to spin the board.
Thanks
Gary
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