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GB/T 3048.12-2007 English PDF

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Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 3048.12-2007 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.

US$519.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 3048.12-2007: Test methods for electrical properties of electric cables and wires -- Part 12: Partial discharge test
Status: Valid

GB/T 3048.12: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 3048.12-2007	519	Add to Cart	4 days	Test methods for electrical properties of electric cables and wires -- Part 12: Partial discharge test	Valid
GB/T 3048.12-1994	399	Add to Cart	3 days	Test methods for determining electrical properties of electric cables and wires. Partial discharge test	Obsolete
GB 3048.12-1983	359	Add to Cart	3 days	Electric wires and cables--Test methods for partial discharge measurements	Obsolete

Similar standards

GB/T 3048.4 GB/T 3048.5 GB/T 3048.1 GB/T 9330 GB/T 5441 GB/T 4011

Basic data

Standard ID: GB/T 3048.12-2007 (GB/T3048.12-2007)
Description (Translated English): Test methods for electrical properties of electric cables and wires -- Part 12: Partial discharge test
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K13
Classification of International Standard: 29.060
Word Count Estimation: 20,247
Date of Issue: 2007-12-03
Date of Implementation: 2008-05-01
Older Standard (superseded by this standard): GB/T 3048.12-1994
Quoted Standard: GB/T 2900.19; GB/T 3048.1; GB/T 3048.8-2007; JB/T 10435; IEC 60270: 1981
Adopted Standard: IEC 60885-3-1988, MOD
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 the partial discharge test of terms and definitions, test equipment, Specimen preparation, test procedures, precautions, test equipment calibration and test records. This test method is applicable to the measurement of different length power cables with extruded insulation partial discharge, i. e. the required sensitivity for a given voltage and discharge capacity of the measuring cable or test discharge exceeds the specified value. For general techniques for partial discharge measurements refer to IEC 60270: 1981. This part should GB/T 3048. 1 together.

GB/T 3048.12-2007: Test methods for electrical properties of electric cables and wires -- Part 12: Partial discharge test

---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 12. Partial discharge test ICS 29.060 K13 National Standards of People's Republic of China Replacing GB/T 3048.12-1994 Electrical wire and cable performance test method Part 12. Partial discharge test (IEC 60885-3. 1988, Electricaltestmethodsforelectriccables- Part 3. Testmethodsforpartialdischargemeasurementonlengths ofextrudedpowercable, MOD) 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

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Test apparatus 1 5 Sample Preparation 6 6 Test Procedure 6 7 Notes 8 Calibration of test equipment 8 8 9 9 test record Appendix A (informative) This section reg number and IEC 60885-3. 1988 10 reg number control Appendix B (normative) double-pulse curve drawing 11 Annex C (normative) termination impedance requirements 13 C. 1 terminating impedance constituted 13 C. 2 RC element 13 C. 3 RLC elements (series resonant circuit) 13 Annex D (informative) fully shielded technical conditions partial discharge test system 14 D. 1 independent power 14 D. 2 power supply filter system 14 D. 3 14 isolated Floor D. 4 fully shielded chamber 14 D. 5 Test equipment and testing equipment 14 D. Note 6 14

Foreword

GB/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 12. The partial modification using IEC 60885-3. 1988 "cable electrical performance test methods - Part 3. Root out of the whole power cable partial discharge Test Method "(in English). This part of the structure in line with GB/T 1.1-2000 "Standardization Guide Part 1. Standard structure and drafting of the rules," and with GB/T 3048 coordinated with other parts. Listed in Appendix A of this part of the reg number and IEC 60885-3. 1988 clauses numbered Control List. Taking into account the development of detection technologies in use IEC 60885-3. 1988, we made some changes in this section, relevant technical differences Provision And into the body of a single vertical line identifies them involved with the provisions margin. This part of IEC 60885-3. 1988 differences are as follows. --- According to the standard structure GB/T 1.1-2000 harmonization principles and provisions of GB/T 3048 in other parts of this part of the increase A. Chapter 2, "Normative references", Chapter 7, "Precautions", Chapter 8, "Verification test equipment," Chapter 9, "Test record record"; --- Taking into account the actual operating conditions of the test, this section made the following changes. 1) In view of the "drawing double pulse map" does not have to step cable partial discharge test, but only check test circuit, it will be IEC 60885-3. 1988 2.6 instead of this section "Appendix B"; 2) In view of the "terminal impedance requirements" theoretical estimate based, and is rarely used in the measurement method, it will be IEC 60885-3. 1988 2.7 instead of this section "Appendix C"; --- According to GB/T 1.1-2000 "take full account of the latest technology," the requirements of this section do the following changes. 1) Since the partial discharge of the cable termination is an important part of the partial discharge testing technology, Chapter 5, "this part of the sample Preparation "specifies more mature test terminal; 2) based on long-term accumulation of technology cable partial discharge test, this part of the increase in Chapter 7 "Notes"; 3) summarize the past 20 years and below 35kV cable partial discharge test routine experience in this section 7.4 "recommended Fully shielded test chamber "Appendix D presentation; --- This part reference IEC 60885-2. 1987 "cable electrical performance test methods - Part 2. Partial discharge tests" (in English) of Chapter 5, "test procedure" to increase the 6.6.2; --- This section removed IEC 60885-3. 1988 Chapter 3, "Guidelines for the application." For ease of use, the IEC 60885-3. 1988 This section also made the following editorial changes. "." --- With a decimal point instead of a comma as the decimal point, ""; --- Deleted international standards foreword; --- Increase the informative appendix A guide to use. This Part replaces GB/T 3048.12-1994 "electrical wire and cable performance test method for partial discharge test." This revision in accordance with 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 3048.12-1994 The main changes are as follows. --- Standard English name to "Testmethodsforelectricalpropertiesofelectriccablesandwires- Part 12. Partialdischargetest "; --- 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 of "Notes" (1994 edition, Chapter 6; Chapter 7 of this edition); 8) Chapter 8 of "verification test equipment" (1994 edition no; 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); --- Made the appropriate changes and improvement in Chapter 4, "Test Equipment" (1994, version 3.1; this edition 4.1,4.1.1); --- In Chapter 5, "Sample Preparation" increased production requirements for a sample terminal (1994 edition, Chapter 4; 5th edition chapter); --- To Chapter 7, "Precautions" made a great complement, especially recommended "fully shielded partial discharge test system technical conditions" (1994 edition, Chapter 6; edition of Chapter 7 and Appendix D); --- Increased in Chapter 8 "Calibration test device" (1994 edition no; Chapter 8 of this edition); --- Increase in Chapter 9, "trial record", sets out the specific content of the test records shall set forth (1994 edition no; Chapter 9 of this edition); --- The former version of the standard in Chapter 7, "double pulse graph drawing method" to Appendix B (1994 edition, Chapter 7; edition Appendix B); --- The former version of the standard of Chapter 8, "termination impedance requirements" to Appendix C (1994 edition, Chapter 8; edition Appendix C). This section of the Appendix A, Appendix D is an informative annex; Appendix B, Appendix C is a normative appendix. 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, Zhang Zhaohuan, Fanzuo Yi. This part of the standard replaces the previous editions as. GB 3048.12-1983, GB/T 3048.12-1994. Electrical wire and cable performance test method Part 12. Partial discharge test

1 Scope

GB/T 3048 This section specifies the terms and definitions of partial discharge test, test equipment, specimen preparation, test procedures, precautions Item, calibration and test records test equipment. Local This test method is suitable for measuring different lengths extruded insulation power cable discharge, that under a specified voltage and sensitivity at a given Measuring cable discharge amount or discharge test whether the amount exceeds a predetermined value. General technical reference about partial discharge measurements IEC 60270. 1981. This section should be used in conjunction with the GB/T 3048.1.

2 Normative references

The 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 test JB/T 10435 wire and cable partial discharge test system test method IEC 60270. 1981 partial discharge measurement

3 Terms and Definitions

GB/T 2900.19 and IEC 60270. 1981 establishes the terms and definitions applicable to GB/T 3048 this part.

4 Test Equipment

4.1 Test circuit 4.1.1 The composition of the test circuit Test circuit includes a high voltage power supply, high voltage voltmeter, measuring circuit, the discharge amount of calibration, dual pulse generator and other components. If necessary, Also includes a terminal impedance or reflection suppressor. Noise level of all components of the test equipment should be low enough to obtain the required sensitivity. NOTE. Usually less use of high voltage meter, commonly used to measure high voltage divider. 4.1.2 High Voltage Power Supply In addition to using the test transformer, the recommended series resonant means for generating the test voltage. Either way, the test should use the power Test samples meet the required voltage and capacitance current requirements. Test frequency power supply should be (49 ~ 61) Hz AC power, the test voltage waveform of two identical half-wave approximation of the sine wave, and the peak The ratio of the rms should Sang 2 ± 0.07. 4.1.3 Test circuit and instrumentation Test circuit comprises a sample and measuring circuit coupling capacitor. Measuring loop is the measured impedance (input impedance of the measuring instrument and selected with The input impedance of the cable unit), connecting wires and measuring instruments and other components. Measuring instrument or detector includes a suitable amplifier, oscilloscope ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 3048.12-2007_English be delivered?

Answer: Upon your order, we will start to translate GB/T 3048.12-2007_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 3048.12-2007_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 3048.12-2007_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.

Question 5: Should I purchase the latest version GB/T 3048.12-2007?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 3048.12-2007 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.