GB/T 7196-2012 English PDFUS$194.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 7196-2012: Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids Status: Valid GB/T 7196: Historical versions
Basic dataStandard ID: GB/T 7196-2012 (GB/T7196-2012)Description (Translated English): Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K15 Classification of International Standard: 29.035.99 Word Count Estimation: 10,127 Older Standard (superseded by this standard): GB/T 7196-1987 Adopted Standard: IEC 60589-1977, IDT Regulation (derived from): National Standards Bulletin No. 41 of 2012 Issuing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 determination by liquid extraction of ionic impurities in electrical insulating materials Test methods. This standard applies to the determination of electrical insulating materials in ionized soluble organic or inorganic subst GB/T 7196-2012: Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids---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. ICS29.035.99 K15 National Standards of People's Republic of China GB/T 7196-2012/IEC 60589. 1977 Replacing GB/T 7196-1987 Determination of electrical insulating materials by extraction with liquids Test methods of ionic impurities (IEC 60589. 1977, IDT) Issued on. 2013-06-01 2012-12-31 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of ContentsPreface Ⅰ 1 Scope 1 2 Terms and definitions 1 3 Instrument 1 4 Program 1 4.1 water extract 1 The organic extracts were 2 4.2 5 3 Calculation 6 3 test report Appendix A (informative) platinized platinum electrode 5 Annex B (informative) potassium chloride standard solution 6 GB/T 7196-2012/IEC 60589. 1977ForewordThis standard rule according to GB/T 1.1-2009 given draft. This Part replaces GB/T 7196-1987 "Test Method for Determination of electrical insulating materials extraction liquid ionic impurities", and GB/T 7196-1987 compared to the main technical changes are as follows. --- Will be part of the "note" to modify the contents of text articles. This standard uses the translation method is equivalent to using IEC 60589. 1977 "was measured by liquid extraction of ionic impurities in electrical insulating materials test side law". The standard proposed by China Electrical Equipment Industrial Association. This standard by the national system of assessment and an insulating material Standardization Technical Committee (SAC/TC301) centralized. This standard was drafted. Guilin Electric Apparatus Research Institute, Shunde quality and technical supervision of standards and codes, Beijing Machinery Industry Electrical Technology and Economy Institute. The main drafters. Zhang Bo, Luo Zhuanyong, Ouyang Dan, Liu Yali, thoughtful. This standard was first released in December 1987, this is the first revision. GB/T 7196-2012/IEC 60589. 1977 Determination of electrical insulating materials by extraction with liquids Test methods of ionic impurities1 ScopeThis standard specifies the test method for measuring liquid extraction of ionic impurities in electrical insulating materials. This standard applies to the determination of the electrical insulating material ionized soluble organic or inorganic substances, based on the volume of the extraction solution conductivity Increases to justify their existence. The test has a special significance for the refrigerant or impregnant immersed in an electrically insulating material.2 Terms and definitionsThe following terms and definitions apply to this document. 2.1 liquid extract volume conductivity volumeconductivityoftheliquidextract Liquid extract volume conductivity γex equal volume of extraction solution conductivity and Comparative test solution (blank test solution) the volume conductivity Difference in SI units in unit volume conductivity is Siemens per meter (S/m). In fact common units of volume conductivity Simon Sub per centimeter (S/cm).3 Instrument250mL conical flask of hard glass equipped with a reflux condenser (see Figure 1). Conductivity cell. a known constant k (1/m or 1/cm). Accuracy of 5% resistor bridge or other measurable resistance means. For the water extract, the measuring device should be at a frequency of 50Hz ~ 3000Hz measured resistance to 1MΩ. Note. I do not know if the cell constant k, can be determined by known conductivity standard solution of potassium chloride in Appendix B. For organic extracts, the measuring device should be used no more than 100V DC voltage measuring resistor until 1TΩ.4 Program4.1 water extract 4.1.1 test water Volume conductivity of the test water shall be less than or equal to 2.0 × 10-4S/m. Wherein the pH should be between 6.8 to 7.2. Test water can be prepared by ion exchange agent or in compliance with the above pH of distilled water twice. Note. It should be noted the impact of carbon dioxide, water, freshly prepared, if short-term exposure to air, it will change to a pH between 5.7 to 6.9 If. Water pH change caused by carbon dioxide, but not less than 6.4, it may be passed through to the water a short time to recover pure nitrogen pH = 7. As the water stored in the Polyethylene bottle carbon dioxide removal, the pH can be kept at the desired range. 4.1.2 Preparation of aqueous extract solutions The absence of special provisions, water extraction solution is prepared according to the following procedure. GB/T 7196-2012/IEC 60589. 1977 ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 7196-2012_English be delivered?Answer: Upon your order, we will start to translate GB/T 7196-2012_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 7196-2012_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 7196-2012_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. 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