IEC 61557-5 specifies the requirements for equipment for measuring earth resistance using an a.c. voltage.
IEC 61557-5 Ed. 3.0 b:2019 History
IEC 61557-5 Ed. 3.0 b:2019
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IEC 61557-5 Ed. 1.0 b:1997
$16.00 $32.00
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