IS 13412 : Part 2 : 1998 Laminated core packages for transformers and inductors used in telecommunication and electronic equipment: Part 2 Electrical characteristics - [IS 13412(Part 2)

1 Scope

1.1 This standard (Part 2) specifies electrical characteristicsof laminated core packages using YEE-2 laminations according to IS11794 series and, in their larger variant, according to IS 13412 :Part 1, for cores made from specified grades of orientedsilicon-steel or nickel-iron alloys. It also gives the marking andpackaging requirements.

1.2 The main applications of these cores exclude the significanttransmission of power with the consequence that the principalelectrical characteristic may be expressed in terms of inductancefactor, A_L.

1.3 Although laminated core packages are produced with orwithout an air gap in the centre leg of the magnetic circuit, thisstandard deals only with gaped cores, where control of the lengthof a designed air gap enables specified A_L valuesto be achieved.

Note - The electrical characteristics of laminated core packageswithout an air gap is a matter of agreement between the customerand the manufacturer.

2 References

IS 1885 : Part 31 :1971Electrotechnical vocabulary:Part 31 Magnetism

IS 9000 : Part 1 :1998Basic environmental testing proceduresfor electronic and electrical items :Part 1 General

IS 11794 : Part 1 :1986Laminations for transformers andinductors for use in telecommunicationand electronic equipment :Part 1 General requirements and tests

IS 11794 : Part 2 : Sec 1 : 1986 Laminations fortransformers andinductors for use in telecommunicationand electronic equipment :Part 2 Preferred ranges of laminations,Section 1 Lamination type YEI-1