If you are auditing an or designing a brand new system .
Since 2014, the IEC 60439-1 standard has been withdrawn and replaced by (General Rules) and IEC 61439-2 (Power Switchgear). What changed? iec 60439-1 standard pdf
Since the standard is copyrighted by the and its network of authorized distributors, obtaining a legal copy is essential. If you are auditing an or designing a brand new system
Verification of insulation levels to prevent electrical breakdown. iec 60439-1 standard pdf
Despite its withdrawal, there are several legitimate reasons to search for the :