Jim, The Australians require supplementary insulation because the NT1s installed there do not provide isolation between the U and the S/T interfaces so the S/T is classed as TNV not SELV. Look in the RCIC web site in the EMC-PSTC discussion at uc.com/compliance_engineering/pstc_db.htm for more information.
Dick Shultz >Supplementary insulation > >Best regards >Barry Singleton >Approvals Specialist email:[email protected] >Securicor 3net Limited >Ringway House Bell Road >Daneshill Basingstoke >Hants RG24 8FB UK >Tel: 44 (0)1256 792174 >Fax: 44 (0)1256 840429 >------------- >Original Text >From: Jim Wiese <[email protected]> >Organization: ADTRAN, Inc. > >Does anyone know what the signal tranformer requirements for an >ISDN S/T interface in Australia. > >The assumption is that the power supply to the terminal adapter meets all >applicable safety requirements. > >What I'm basically looking for are the Creepage, Clearance and >insuluation category requirements. > >Thanks, > >Jim Wiese >ADTRAN, Inc. >205-971-8431 >[email protected]
