Standard Test Method for Alternating-Current Magnetic Properties of Amorphous Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method with Sheet Specimens

Importancia y uso:

4.1 This test method provides a satisfactory means of determining various ac magnetic properties of amorphous magnetic materials. It was developed to supplement the testing of toroidal and Epstein specimens. For testing toroidal specimens of amorphous materials, refer to Test Method A912/A912M.

4.2 The procedures described herein are suitable for use by manufacturers and users of amorphous magnetic materials for materials specification acceptance and manufacturing control.

Note 2: This test method has been principally applied to the magnetic testing of thermally, magnetically annealed, and flattened amorphous strip at 50 Hz and 60 Hz. Specific core loss at 13 kG or 14 kG [1.3 T or 1.4 T], specific exciting power at 13 kG or 14 kG [1.3 T or 1.4 T], and the flux density, B, at 1 Oe [79.6 A/m] are the recommended parameters for evaluating power grade amorphous materials.

Subcomité:

A06.01

Referida por:

A0901-24

Volúmen:

03.07

Número ICS:

17.220.20 (Measurement of electrical and magnetic quantities)

Palabras clave:

ac; ammeter; amorphous; anneal; core loss; exciting power; form factor; magnetic; peak; permeability; sheet; specific; voltmeter; wattmeter; waveform; yoke;