This European Standard specifies methods of measurement of electrical power consumption, and the reporting of results, for external power supplies. This standard is applicable to external power supplies with a rated input voltage within the range 100 V a.c. to 250 V a.c. having a single output with a rated output power not exceeding 250 W and a rated output voltage not exceeding 230 V a.c. or 325 V d.c.
Compliance to requirements of Commission Regulation (EC) No 278/2009 of 6 April 2009 with the clauses of this standard is declared by Annex ZZ.