Alex, Assuming your talking about 60950 and the signal lines are SELV you only need basic insulation, not reinforced, between TNV-3 and SELV. Distance through insulation does not come into play, just the dielectric test and voltage rating of the wire in this case. Dan Roman [email protected]
From: [email protected] [mailto:[email protected]]On Behalf Of Alex McNeil Sent: Thursday, September 18, 2003 3:04 AM To: [email protected] Subject: PSTN + Signal Cable Hi Colleagues, Does anyone foresee a problem if I route the PSTN and Signal wires within the same cable? I am thinking of a particular application where the above scenario would fit well in my design. I ensure that the 1.6mm (and 2.0mm for re-inforced insulation) spacing requirement is met on the PCB connector and PCB tracking. The only problem I see is the cable insulation does not meet the 0.4mm thru insulation requirement but the manufacturer will test the cable for 1500Vrms dielectric strength between the PSTN wires and the Signal wires, 100% of production and produce a CoC. Or must I specify that the wire insulation meet the 0.4mm thru insulation requirement? Thanks in advance of your replies. Kind Regards Alex McNeil ________________________________________________________________________ This email has been scanned for all viruses by the MessageLabs Email Security System. ________________________________________________________________________
