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GB/T 22071.1-2018: Test guide for instrument transformers -- Part 1: Current transformers
Status: Valid GB/T 22071.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22071.1-2018 | English | 1239 |
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Test guide for instrument transformers -- Part 1: Current transformers
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GB/T 22071.1-2018
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| GB/T 22071.1-2008 | English | 879 |
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Test guide for instrument transformers -- Part 1: current transformers
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GB/T 22071.1-2008
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PDF similar to GB/T 22071.1-2018
Basic data | Standard ID | GB/T 22071.1-2018 (GB/T22071.1-2018) | | Description (Translated English) | Test guide for instrument transformers -- Part 1: Current transformers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K41 | | Classification of International Standard | 29.180 | | Word Count Estimation | 62,647 | | Date of Issue | 2018-12-28 | | Date of Implementation | 2019-07-01 | | Older Standard (superseded by this standard) | GB/T 22071.1-2008 | | Regulation (derived from) | National Standard Announcement No. 17 of 2018 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 22071.1-2018: Test guide for instrument transformers -- Part 1: Current transformers---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 guide for instrument transformers--Part 1. Current transformers
ICS 29.180
K41
National Standards of People's Republic of China
Replace GB/T 22071.1-2008
Transformer test guidelines
Part 1. Current transformers
Published on.2018-12-28
2019-07-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
1 Scope 1
2 Normative references 1
3 test items and test sequence 1
4 General test conditions 4
5 type test 4
6 routine tests 25
7 Special test 46
Supplementary requirements for Type 8 tests 56
Figure 1 Test sequence flow chart for type test and routine test
Figure 2 Determine the resistance R0 value of the moment when the power is cut off.
Figure 3 Altitude correction factor for temperature rise 8
Figure 4 Radio interference voltage test line 12
Figure 5 Accuracy test (comparative method) 15
Figure 6 Composite error test (direct method 1) 16
Figure 7 Composite error test (direct method 2) 16
Figure 8 short-time current test 24
Figure 9 Primary power frequency withstand voltage test 27
Figure 10 Example of test circuit for partial discharge measurement
Figure 11 Example of a calibration circuit for partial discharge measurement 29
Figure 12 Non-capacitive transformer dielectric loss factor measurement 30
Figure 13 Capacitance type transformer partial capacitance and dielectric loss factor measurement (positive connection method) 31
Figure 14 Capacitance transformer overall capacitance and dielectric loss factor measurement 31
Figure 15 Ground-screen (last screen) dielectric loss factor measurement for capacitive transformers 32
Figure 16 Inter-section power frequency withstand voltage test 33
Figure 17 Secondary end power frequency withstand voltage test 34
Figure 18 Outlet terminal polarity test (DC test method) 36
Figure 19 Interturn overvoltage test (program A) 40
Figure 20 Interturn overvoltage test (program B) 41
Figure 21 Schematic block diagram of the YS-2 microcoulometer analysis system 42
Figure 22 Transfer Overvoltage Measurement. Impact Test Waveform 48
Figure 23 Transfer Overvoltage Measurement. General Test Arrangement 49
Figure 24 Transfer overvoltage measurement. GIS transformer test circuit 50
Figure 25 Schematic diagram of mechanical strength test 51
Figure 26 Insulation Thermal Stability Test (Line 1) 55
Figure 27 Insulation Thermal Stability Test (Line 2) 55
Figure 28 Insulation Thermal Stability Test (Line 3) 56
Table 1 Test item 2
Table 2 Types and pressures of gases in type test, routine test and special test 3
Table 3 Temperature rise limits for various components, materials and media of transformers 7
Table 4 Primary insulation level and withstand voltage of transformer 8
Table 5 Rain conditions for standard wet test 11
Table 6 Ratio difference and phase difference limits for measuring transformers (0.1 to 1.0) 13
Table 7 Ratio difference and phase difference limits for measuring transformers for special purposes (0.2S and 0.5S) 14
Table 8 Ratio difference limits for measuring transformers (levels 3 and 5) 14
Table 9 Error limits for P- and PR-rated protection transformers 14
Table 10 Error limits for TPX, TPY, and TPZ transformers 14
Table 11 Permissible partial discharge levels 29
Table 12 Dielectric loss factor allowable value of 32 for various oil immersed transformers
Table 13 Oil-immersed transformers sealing performance test requirements 37
Table 14 Insulation oil breakdown voltage requirements 44
Table 15 dielectric oil loss factor (tan δ) requirements 45
Table 16 Insulation oil moisture content requirements 45
Table 17 Dissolved gas content in insulating oil requires 45
Table 18 Passing Overvoltage Waveform Requirements and Limits 48
Table 19 Static withstand test load 51
Table 20 Application of test load on primary terminal 52
Table 21 Temporary leakage rates allowed for gas systems 53
Table 22 Fire hazard of electrical products 54
Foreword
GB/T 22071 "Guidelines for Testing of Transformers" is divided into the following sections.
--- Part 1. Current transformers;
--- Part 2. Electromagnetic voltage transformers.
This part is the first part of GB/T 22071.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 22071.1-2008 "Guidelines for Testing of Transformers Part 1. Current Transformers", and GB/T 22071.1-
Compared to.2008, the main technical changes are as follows.
--- Revised the normative reference documents (see Chapter 2 and Chapter 2 of GB/T 22071.1-2008);
--- Listed specific test items (see Table 1);
--- Improve the test sequence and give a test sequence diagram (see Figure 1 and 3.2 of GB/T 22071.1-2008);
--- Re-improved and supplemented the relevant test items and test methods (see 3.1 and Chapter 5, Chapter 6, Chapter 7);
--- Increased the relevant test requirements for equipment with maximum voltage of 750kV and 1000kV transformers (see Table 4).
This part was proposed by China Electrical Equipment Industry Association.
This part is under the jurisdiction of the National Instrument Standardization Technical Committee (SAC/TC222).
This section drafted by. Shenyang Transformer Research Institute Co., Ltd., China Electric Power Research Institute, Dalian North Transformer Group
Company, Dalian First Transformer Co., Ltd., Zhejiang Skyline Transformer Co., Ltd., Jiangsu Jingjiang Transformer Co., Ltd., special change
Electric Power Kangjia (Shenyang) Transformer Co., Ltd., Hengyang Huarui Electric Co., Ltd., State Grid Jilin Electric Power Co., Ltd.
Research Institute.
The main drafters of this section. Zhang Xianzhong, Liu Yong, Wang Wei, Wang Renqi, Sha Yuzhou, Xu Wen, Li Taochang, Xiong Jiangyi, Wang Jiyuan, Liu Yufeng,
Zeng Xiangshun, Tang Fuxin, Deng Xiaozhe, Huang Hua, Zhao Shixiang.
The previous versions of the standards replaced by this section are.
---GB/T 22071.1-2008.
Transformer test guidelines
Part 1. Current transformers
1 Scope
This part of GB/T 22071 gives the test items, test sequence, general test conditions and test requirements of the current transformer.
This section applies to the types of current transformers (hereafter referred to as transformers) specified in GB/T 20840.1 and GB/T 20840.2.
Tests, routine tests and special tests.
The test method given in this section can also be used as the handover test at the time of product acceptance.
2 Normative references
The following documents are indispensable for the application of this document. 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 2421.1 Overview and Guide for Environmental Testing of Electrical and Electronic Products
GB/T 2423.17 Environmental testing of electric and electronic products - Part 2. Test method test Ka. salt spray
GB/T 2423.23 Environmental testing - Part 2. Test method test Q. Sealing
GB/T 4208 enclosure protection grade (IP code)
GB/T 4756 petroleum liquid manual sampling method
GB/T 5169.2 Fire hazard testing for electric and electronic products - Part 2. General guide to fire hazard assessment
GB/T 5169.9 Fire hazard testing for electric and electronic products - Part 9. Guidelines for pre-selection of fire hazard assessment
General
GB/T 5169.18 Fire hazard testing for electric and electronic products - Part 18. General
GB/T 5585.1 Copper, aluminium and alloy alloys for electric purposes - Part 1 . Copper and copper alloy bus
GB/T 7354 partial discharge measurement
GB/T 7674 gas insulated metal-enclosed switchgear with rated voltage of 72.5kV and above
GB/T 11604 high-voltage electrical equipment radio interference test method
GB/T 16927.1 High Voltage Test Technique Part 1. General Definitions and Test Requirements
GB/T 16927.2 High voltage testing techniques - Part 2. Measuring systems
GB/T 19001 quality management system requirements
GB/T 20138 Protection level of external mechanical collision of electrical equipment casing (IK code)
GB/T 20840.1 Transformers - Part 1. General technical requirements
GB/T 20840.2-2014 Part 2. Supplementary technical requirements for current transformers
ISO 3231 Paint and varnish resistance to moisture containing sulphur dioxide (Paintsandvarnishes-Deter-
Aminationofresistancetohumidatmospherescontainingsulfurdioxide)
3 test items and test sequence
3.1 Test project
Type test, routine test and special test items are shown in Table 1.
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