Type:Single-Phase /Three Phase ; Standard:IEC521; Rated Current:2(4),2.5(5),3(6),5(10),10( ... ),20(40),30(60),40(80)A 230/415V DD862 single-phase electric energy meters are induction meters applicable for measuring ... standards and IEC521 international standard.Specifications: Type:Single-Phase /Three Phase ;Standard:IEC521;Rated Current:2(4),2.5(5),3(6 ...