Nkhani Za Kampani

  • Kulumikizana kwa insulation kwa low voltage switchgear

    Kulumikizana kwa insulation kwa low voltage switchgear

    Mu 1987, chikalata chaukadaulo chotchedwa "zofunikira pakulumikizana kwa insulation mu Supplement 1 mpaka iec439" idalembedwa ndi sub Technical Committee ya International Electrotechnical Commission (IEC) 17D, yomwe idayambitsanso kulumikizana kwa insulation mu ...
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