How do the safety standards (for example, IEC 60950 and their clones) define 'insulating tape'? Are the insulating properties determined as applied in the end product by hipot and leakage current?
On Mon, 29 Apr 2002 12:16:16 -0700 (PDT), Rich Nute <[email protected]> wrote: >Thanks for sharing your findings on insulating tape >and anti-static tape. > >All insulators have the property of insulation >resistance. Modern insulations have insulation >resistances in the gigaohm and teraohm ranges. > >I would guess that anti-static insulators have a >relatively low value of insulation resistance. From >what you describe, the manufacturer has assumed that >his anti-static material is not suitable as an >insulator, presumably because the insulation >resistance is relatively low. > >The insulation resistance required by a circuit is >relative to the circuit resistances. > >Insulation is in parallel to circuit resistances. >The effect of insulation resistance is usually >ignored because we assume the insulation resistance >is very high compared to the circuit resistance. > >For relatively low circuit resistances, I would >think that relatively low insulation resistances >-- say megohm range -- would be acceptable. I >would think that one could use an anti-static >material as an insulator if the insulation >resistance was sufficiently high compared to the >circuit resistance. > >I wonder of anti-static material manufacturers have >studied the long-term effects of various values of >working voltage on the material? > > >Best regards, >Rich > > > > > > > >------------------------------------------- >This message is from the IEEE EMC Society Product Safety >Technical Committee emc-pstc discussion list. > >Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > >To cancel your subscription, send mail to: > [email protected] >with the single line: > unsubscribe emc-pstc > >For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > >For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > >All emc-pstc postings are archived and searchable on the web at: > http://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" ---- Patrick Lawler [email protected] ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
