Magnetic materials - Methods of measurement of d.c. magnetic properties of magnetically soft materials

Magnetic materials - Methods of measurement of d.c. magnetic properties of magnetically soft materials

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1   Scope and object

This part of IEC 60404 specifies the methods of measuring the d.c. magnetic properties of [A1_start]magnetically soft materials[A1_end] iron and steel in a closed magnetic circuit using either the ring or the permeameter methods. [A1_start]The ring method is suitable for use with laminated or solid ring specimens as well as ring specimens produced by sintering.[A1_end]
Two methods are used:
  1. a) the ring method, particularly for magnetic field strengths of up to 10 kA/m;
  2. b) the permeameter method for magnetic field strengths in the range 1 kA/m to 200 kA/m.

NOTE The measurement of coercivity in an open magnetic circuit is specified in IEC 60404‑7.