We use them in the secondary to provide limited power outputs per IEC 950.
We have obtained UL and TUV certifications without a problem.
 
Richard Woods

        ----------
        From:  pmerguer...@itl.co.il [SMTP:pmerguer...@itl.co.il]
        Sent:  Wednesday, November 17, 1999 8:43 AM
        To:  emc-p...@majordomo.ieee.org
        Subject:  PTCs for Transformer Overload/Short Circuit Protection


        Hello Group,

        Anyone had problems with Test Houses regarding the use of PTCs in
        Transformer Primary and/or Secondary Windings to Protect Against
        Overload/Short Circuit Conditions?


        Regards,
        +++++++++++++++++++++++++++++++++++
        RTTE Directive Seminar
        Renaissance Hotel, Tel-Aviv
        12th January 2000. For details:
        http://www.itl.co.il/RTTE.htm
        +++++++++++++++++++++++++++++++++++


        Peter Merguerian
        Managing Director
        Product Testing Division
        I.T.L. (Product Testing) Ltd.
        Hacharoshet 26, POB 211
        Or Yehuda 60251, Israel

        Tel: 972-3-5339022 Fax: 972-3-5339019
        e-mail: pmerguer...@itl.co.il
        website: http://www.itl.co.il 






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