DIN IEC 60740-2-1995 电信和电子设备变压器和电感器铁芯片.第2部分:软磁金属材料制铁芯片最小漏磁性规范
Laminations for transformers and inductors for use in telecommunication and electronic equipment - Part 2: Specification for the minimum permeabilities of laminations made of soft magnetic metallic materials (IEC 60740-2:1993)
The document specifies requirements for the minimum permeabilities of laminations made of silicon-iron and nickel-iron alloys as defined by the alloy classes C2, E1, E3 and E4 of IEC 404-1.