GB/T 3655-2000 Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame

Standard No.: GB/T 3655-2000
Language: Chinese
Release Date: 2000
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Replace By: GB/T 3655-2008
Lastest: GB/T 3655-2022

Scope: This standard specifies the general principle of AC measurement for measuring the magnetic properties of electrical steel sheets (strips) with Epstein square circles, the measurement method of specific total loss, the peak value of magnetic polarization, the effective value of magnetic field strength, the peak value of magnetic field strength and the specific apparent value. Power measurement method, general principle of DC measurement, DC measurement method of magnetic polarization, calibration of measuring device and test report. This standard is applicable to the measurement of DC magnetic properties of grain-oriented and non-grain-oriented electrical steel sheets (strips) and the measurement of AC magnetic properties with a frequency upper limit of 400 Hz. Applicable to test specimens obtained from any grade of electrical steel sheet (strip). The sample should be demagnetized before measurement, and the measurement should be carried out at an ambient temperature of (23±5)°C and a relative humidity of less than 80%. Measurements at higher frequencies should be carried out in accordance with GB/T 10129.

2022 GB/T 3655-2022 Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an epstein frame
2008 GB/T 3655-2008 Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame
2000 GB/T 3655-2000 Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame
1992 GB/T 3655-1992 Magnetic sheet and strip—Methods of measurement of magnetic electrical physical properties

GB/T 3655-2000Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame