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GBZ28870-2012 English PDF

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GBZ28870-2012: Measuring methods for anti-EMI soft ferrite materials
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Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/Z 28870-2012	English	279	Add to Cart	3 days [Need to translate]	Measuring methods for anti-EMI soft ferrite materials	Valid	GB/Z 28870-2012

PDF similar to GBZ28870-2012

Standard similar to GBZ28870-2012

GB/T 36103.1 SJ/T 10412 SJ/T 10410 GB/T 28869.2 GB/T 28869.3 GB/T 28864.2

Basic data

Standard ID	GB/Z 28870-2012 (GB/Z28870-2012)
Description (Translated English)	Measuring methods for anti-EMI soft ferrite materials
Sector / Industry	National Standard
Classification of Chinese Standard	L19
Classification of International Standard	29.100.10
Word Count Estimation	12,125
Quoted Standard	GB/T 9632.1-2002; GB/T 28868-2012; GB/Z 28865-2012
Regulation (derived from)	National Standards Bulletin 2012 No. 28
Issuing agency(ies)	Ministry of Health of the People's Republic of China
Summary	This standard specifies the EMI ferrite materials measurement method. The technical guidance document to guide anti-electromagnetic interference ferrite material specification measurements.

GBZ28870-2012: Measuring methods for anti-EMI soft ferrite materials

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Measuring methods for anti-EMI soft ferrite materials ICS 29.100.10 L19 People's Republic of China national standardization of technical guidance documents Measurement of resistance to electromagnetic interference soft ferrite materials Posted on.2012-11-05 2013-02-15 Implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This Guidance Document is drafted in accordance with the rules given in GB/T 1.1-2009. This Guidance Document is for reference only. The suggestions and opinions on this Guidance Document shall be submitted to the competent department of standardization administration under the State Council Door reflection. The guidance of technical documents by the People's Republic of China Ministry of Industry and Information Technology. This guidance document is governed by the National Committee for Standardization of Magnetic Materials and Ferrite Materials (SAC/TC89). This Guidance Document is drafted by Southwest Institute of Applied Magnetism. The main drafters of this guidance document are Peng Qinggui, Zhang Shijun, Liu Jian and Gao Xiaoqin. Measurement of resistance to electromagnetic interference soft ferrite materials

1 Scope

This Guidance Document specifies methods of measuring anti-electromagnetic interference ferrite materials. This Guidance Document is used to guide the specification of anti-electromagnetic interference soft ferrite materials.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 9632.1-2002 Communication inductors and transformers core measurement method (IEC 60367-1.1982, IDT) GB/T 28868-2012 uncoated magnetic oxide ring core size Anti - electromagnetic interference soft ferrite materials specification

3 environmental conditions

3.1 General Magnetic measurements, the general should be at least 24h in advance, according to GB/T 9632.1-2002 Chapter 6 of the magnetic normal samples State] treatment, and then measure. This step can also be omitted without affecting the measured values. Throughout the measurement process, the sample must be protected from mechanical shock and vibration and magnetic interference and should be avoided Winding polycondensation may occur due to temperature changes. 3.2 measured atmospheric conditions The measured atmospheric conditions should meet the following requirements. a) Standard atmospheric conditions Temperature .15 ℃ ~ 35 ℃; Relative humidity 20% ~ 80%; Pressure .86kPa ~ 106kPa. The measurement can be performed at a temperature within the range of standard atmospheric conditions, and the temperature can not change to a significant level throughout the measurement The degree of measurement results. In some cases, a thermostat is required. b) arbitration of atmospheric conditions Temperature .25 ℃ ± 1 ℃; Relative humidity .48% ~ 52%; Pressure .86kPa ~ 106kPa.

4 samples

Anti-electromagnetic interference Soft ferrite material performance parameters measured, as far as possible after sintering without external stress (such as not grinding), with A sample of a torus with a rectangular cross-section should have no apparent or intrinsic defects that affect the accuracy of the measurement. The best sample size press