IEC 60050-447:2020 defines terms specifically relevant to measuring relays.
IEC 60050-447 Ed. 2.0 b:2020 History
IEC 60050-447 Ed. 2.0 b:2020
$208.00 $417.00
IEC 60050-447 Ed. 1.0 b:2010
$158.00 $317.00
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