GB/T 3048.11-2007 English PDFUS$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 3048.11-2007: Test methods for electrical properties of electric cables and wires -- Part 11: Test for dielectric dissipation factor Status: Valid GB/T 3048.11: Historical versions
Basic dataStandard ID: GB/T 3048.11-2007 (GB/T3048.11-2007)Description (Translated English): Test methods for electrical properties of electric cables and wires -- Part 11: Test for dielectric dissipation factor Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: K13 Classification of International Standard: 29.060 Word Count Estimation: 8,894 Date of Issue: 2007-12-03 Date of Implementation: 2008-05-01 Older Standard (superseded by this standard): GB/T 3048.11-1994 Quoted Standard: GB/T 2900.19; GB/T 3048.1; GB/T 3048.8-2007 Regulation (derived from): Announcement of Newly Approved National Standards No. 12 of 2007 (total 112) 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 test dielectric loss tangent of terms and definitions, test equipment, Specimen preparation, test procedures, test results and calculations, precautions and test records. This section applies to frequency AC voltage measurement cable products dielectric loss tangent (tan��) values ??and capacitor values ??, but not for winding wire products. This part should GB/T 3048. 1 together. GB/T 3048.11-2007: Test methods for electrical properties of electric cables and wires -- Part 11: Test for dielectric dissipation factor---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. Test methods for electrical properties of electric cables and wires Part 11. Test for dielectric dissipation factor ICS 29.060 K13 National Standards of People's Republic of China Replacing GB/T 3048.11-1994 Electrical wire and cable performance test method Part 11. dielectric loss tangent test Posted 2007-12-03 2008-05-01 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 Normative references 1 3 Terms and definitions 4 Test apparatus 1 5 Sample Preparation 2 6 Test Procedure 2 7 Test results and calculations 2 8 Note 2 9 3 test recordForewordGB/T 3048 "electrical wire and cable performance test method" is divided into 14 parts. --- Part 1. General; --- Part 2. Test resistivity of metal materials; --- Part 3. Semi-conductive rubber material volume resistivity test; --- Part 4. DC resistance of conductors; --- Part 5. Insulation resistance test; --- Part 7. Tracking resistance test; --- Part 8. AC voltage test; --- Part 9. spark test of insulated cores; --- Part 10. extruded jacket spark test; --- Part 11. dielectric loss tangent test; --- Part 12. Partial discharge test; --- Part 13. impulse voltage test; --- Part 14. DC voltage test; --- Part 16. Surface resistance test. This section GB/T 3048 Part 11. This Part replaces GB/T 3048.11-1994 "electrical wire and cable performance test method dielectric loss tangent test." This revision According to GB/T 1.1-2000 "Standardization Guide Part 1. Standard structure and write rules" of this section have been adjusted. Section compared with the GB/T 3048.11-1994 The main changes are as follows. --- Standard Chinese name to "wire and cable electrical performance test methods - Part 11. dielectric loss tangent test"; --- Standard English name to "Testmethodsforelectricalpropertiesofelectriccablesandwires- Part 11. Testfordielectricdissipationfactor "; --- Overall structure and layout of this section according to GB/T 1.1-2000 modified. 1) Chapter 1 of "Range" (1994 edition Chapter 1; Chapter 1 of this edition); 2) Chapter 2 is "normative references" (1994 edition, Chapter 2; edition Chapter 2); 3) Chapter 3 as "Terms and Definitions" (1994 edition no; Chapter 3 of this edition); 4) Chapter 4, to "test equipment" (1994 edition Chapter 3; Chapter 4 of this edition); 5) Chapter 5 is "Sample Preparation" (1994 edition, Chapter 4; Chapter 5 of this edition); 6) Chapter 6 is "Test Program" (1994 edition Chapter 5; Chapter 6 of this edition); 7) Chapter 7 is "the test results and calculations" (1994 edition, Chapter 6; edition Chapter 7); 8) Chapter 8 of "Notes" (1994 edition, Chapter 7; Chapter 8 of this edition); 9) Chapter 9 "test records" (1994 edition no; Chapter 9 of this edition); --- In Chapter 2, "Normative references" supplemented with relevant standards (1994 edition Chapter 2; Chapter 2 of this edition); --- Increased Chapter 3, "Terms and definitions" (1994 edition no; Chapter 3 of this edition); --- The following modifications were made in Chapter 4, "Test Equipment". 1) a clear test voltage power supply in accordance with the provisions of GB/T 3048.8 is measured (1994 Version 3.1.3; edition 4.1.3); 2) raise the standard capacitor [1994 Edition 3.2.1 b requirements. Excerpts of 4.2.1 b),]; item; 3) increasing the measuring instrument shall meet the current requirements of the sample capacitor (1994 Edition no; this version 4.2.2); Preparation of deionized water terminal --- increase in Chapter 5, "Sample Preparation" (1994 edition free; edition 5.6); --- The following modifications were made in Chapter 6, "Test Program". 1) sample wiring supplemented and perfected [1994 Version 5.1.3; Excerpts of 6.1 c) above]; 2) Remove the thermometer measures the ambient temperature with the provisions of the (1994 version 5.3; free edition); 3) increase the requirements for measuring sample temperature measurement tanδ value at a predetermined test temperature (1994 version without; Excerpts 6.3); --- In Chapter 7, "test results and calculations", increasing the capacitance value of the sample read or compute requirements (no 1994 edition; edition 7.2); --- Increase in Chapter 9, "trial record", sets out the specific content of the test records shall set forth (1994 6.2; Chapter 9 of this edition). This part is proposed by the China Electrical Equipment Industrial Association. This part of the National Standardization Technical Committee of wire and cable. This section is drafted. Shanghai Electric Cable Research Institute. The main drafters of this section. Wan Shuter, Yuzhen Ming, Xiakai Rong, Yang only. This part of the standard replaces the previous editions as. GB 767-1965, GB 3048.11-1983, GB/T 3048.11-1994. Electrical wire and cable performance test method Part 11. dielectric loss tangent test1 ScopeGB/T 3048 This section specifies the terms and definitions, test equipment, specimen preparation, test procedures, test dielectric loss tangent, Test results and calculations, precautions and test records. This section applies to power frequency AC voltage measuring dielectric loss tangent of the angle of cable products (tanδ) and capacitance value, but not for about Group product line. This section should be used in conjunction with the GB/T 3048.1.2 Normative referencesThe following documents contain provisions which, through reference to GB/T 3048 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 2900.19 term High Voltage Engineering and Electrical Insulation Coordination GB/T 3048.1 wire and cable electrical performance test methods - Part 1. General GB/T 3048.8-2007 electrical wire and cable performance test methods - Part 8. AC voltage test3 Terms and DefinitionsGB/T 2900.19, and established the following terms and definitions apply GB/T 3048 this part. 3.1 Characterization in a cable insulation parameters alternating electric field energy loss, is the applied sinusoidal voltage and current through the sample between the phase angle Complementary angle tangent.4 Test Equipment4.1 Test Power 4.1.1 In addition to using the test transformer to produce the required test voltage, the series resonant circuit can also be used to generate test voltage. Power should test Meet the test voltage and current requirements corresponding capacitance required for the test specimen. 4.1.2 The test shall supply frequency (49 to 61) Hz waveform of the AC voltage, the voltage should be close to a sine wave, two substantially identical half-wave, And the ratio of peak to rms Sang 2 ± 0.07. 4.1.3 should be GB/T 3048.8-2007 4.3 measured voltage test power supply. 4.2 Measuring Instruments Dielectric loss angle 4.2.1 can be used amoxicillin bridge (or current Comparator Bridge) and the standard capacitor measuring cable tangent (tanδ). a) amoxicillin bridge (dual-shield structure should be accompanied by automatic adjustment is shielded potentiometer) or current Comparator Bridge, should satisfy the following condition. 1) tanδ measurement range of 1 × 10-4 ~ 1.0; ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 3048.11-2007_English be delivered?Answer: Upon your order, we will start to translate GB/T 3048.11-2007_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 3048.11-2007?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 3048.11-2007 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
