EN 50123-4-2003 en Railway applications - Fixed installations - D C switchgear Part 4 Outdoor d c disconnectors switch-disconnectors and earthing switches (Incorporates Amendment A.pdf

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3、A1:2013EN 50123-4:2003+A1:2013 - 2 - 3 - EN 50123-4:2003/A1:2013ForewordThis document (EN 50123-4:2003/A1:2013) has been prepared by CLC/SC 9XC “Electric supply and earthing systems for public transport equipment and ancillary apparatus (Fixed installations)“, of Technical Committee CLC/TC 9X “Elect

4、rical and electronic applications for railways“.The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 2014-08-26 latest date by which the national standards conflicting with th

5、is document have to be withdrawn(dow) 2016-08-26Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights.Foreword to amendment A1 (1 &RQWHQWV3DJ

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8、OLFDEOHWHVWVDQGWHVWVHTXHQFH 3HUIRUPDQFHRIWHVWVBS EN 50123-4:2003+A1:2013EN 50123-4:2003+A1:2013- 3 - 3 - EN 50123-4:2003/A1:2013ForewordThis document (EN 50123-4:2003/A1:2013) has been prepared by CLC/SC 9XC “Electric supply and earthing systems for public transport equipment and ancillary apparatus

9、 (Fixed installations)“, of Technical Committee CLC/TC 9X “Electrical and electronic applications for railways“.The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 2014-08-26

10、 latest date by which the national standards conflicting with this document have to be withdrawn(dow) 2016-08-26Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any o

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