EMengineer
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Good day,
I have worked with IEC 60601-1 and IEC 60950-1 standards and there leakage current measurement principle was to measure current between appliance (enclosure, patient connections, etc.) and earth (simulate if human touches any part).
Recently I started to study IEC 60335-1 household appliances and there's leakage current measurement - but it slightly differs from mentioned above. The principle of current measurement is to measure it between one phase and enclosure. But what will I find when I measure current between primary circuit and enclosure? What is the main purpose/ idea of such measurement? As I understood during this measurement the earth connection should be open.
Here is the diagram from the IEC 60335-1:
I have worked with IEC 60601-1 and IEC 60950-1 standards and there leakage current measurement principle was to measure current between appliance (enclosure, patient connections, etc.) and earth (simulate if human touches any part).
Recently I started to study IEC 60335-1 household appliances and there's leakage current measurement - but it slightly differs from mentioned above. The principle of current measurement is to measure it between one phase and enclosure. But what will I find when I measure current between primary circuit and enclosure? What is the main purpose/ idea of such measurement? As I understood during this measurement the earth connection should be open.
Here is the diagram from the IEC 60335-1: