
Methods Of Measurement Of Touch Current And Protective Conductor Current
出版:Verband Deutscher Elektrotechniker

專家解讀視頻
2000 [01/10/2000]DRAFT 90 AMD1 99 [01/09/1999]DRAFT 90 [01/12/1990]
DIN EN 60990 (2000-10) - Identical
IEC 60990 Ed. 2.0 - Identical
EN 60990:2016 - Identical