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GB/T 30140-2013 English PDF

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US$369.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 30140-2013: Measuring method for the shielding effectiveness of magnetic material in low frequency alternating magnetic field
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30140-2013	369	Add to Cart	3 days	Measuring method for the shielding effectiveness of magnetic material in low frequency alternating magnetic field	Valid

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Basic data

Standard ID: GB/T 30140-2013 (GB/T30140-2013)
Description (Translated English): Measuring method for the shielding effectiveness of magnetic material in low frequency alternating magnetic field
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H21
Classification of International Standard: 77.040.99
Word Count Estimation: 16,160
Quoted Standard: GB/T 26667-2011; ASTM A34/A34M-2006; ASTM A340-2003A(2011)
Adopted Standard: ASTM A698/A698M-2007, NEQ
Regulation (derived from): National Standards Bulletin No. 25 of 2013
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the method for measuring magnetic low frequency magnetic shielding effectiveness in a magnetic field. This standard applies to materials covered include: metal magnetic shielding materials, composite materials and various types of

GB/T 30140-2013: Measuring method for the shielding effectiveness of magnetic material in low frequency alternating magnetic field

---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 method for the shielding effectiveness of magnetic material in low frequency alternating magnetic field ICS 77.040.99 H21 National Standards of People's Republic of China Magnetic shielding low frequency magnetic field Effectiveness Measurement Issued on. 2013-12-17 2014-05-14 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses redrafted law of the non-equivalent with ASTMA698/A698M-2007 "in attenuating alternating magnetic field in the magnetic shield effect test Energy standard method. " The standard proposed by China Electrical Equipment Industrial Association. This standard by the National Technical Committee of Standardization of electromagnetic shielding material (SAC/TC323) centralized. This standard was drafted. Shanghai Measurement and Testing Technology Research Institute, Northern Engineering Design Institute, Anfang Gaoke Electromagnetic Safety (Northern Beijing) Co., Ltd. The main drafters of this standard. to Lei, Xu Zhen, Lei Shi Bing, Cheng Tao, Cai Qing, Lu Fumin, Li Ziqiang, Zhu Andong, Qilu, Sun Jian. Magnetic shielding low frequency magnetic field Effectiveness Measurement

1 Scope

This standard specifies the method for measuring magnetic magnetic shielding effectiveness in the low frequency magnetic field. This standard applies to materials covered include. metal magnetic shielding materials, composite materials and various types of magnetic shielding coating shielding material.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 26667-2011 electromagnetic shielding material terms ASTMA34/A34M-2006 test sample magnetic material and process specifications (PracticeforSamplingandPro- curementTestingofMagneticMaterials) ASTMA340-2003a (2011) about the magnetic measurements Symbols and Definitions (TerminologyofSymbolsand DefinitionsRelatingtoMagneticTesting)

3 Terms and Definitions

GB/T 26667-2011 and ASTMA340-2003a (2011) define the following terms and definitions apply to this document. 3.1 Magnetic shielding effectiveness magneticshieldingeffectiveness SEM Shielding material placed before, after measuring the voltage detection coil ratio. Shielding material placed before, after the detection coils measure the magnetic field strength ratio.

4 Measurement Conditions

4.1 Measuring magnetic field frequency 50Hz or 60Hz. Measure the magnetic field magnitude 4.2 Field size can measure the magnetic field strength at any desired, an AC magnetic field Hp standard measurement of 40A/m or 160A/m. 4.3 Measuring environmental requirements Environmental alternating magnetic field is less than 10nT, the device away from the surrounding electromagnetic radiation instruments. An ambient temperature of 23 ℃ ± 5 ℃, relative humidity not Greater than 70%. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 30140-2013_English be delivered?

Answer: Upon your order, we will start to translate GB/T 30140-2013_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 30140-2013_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 30140-2013_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.