GB/T 21437.2-2021 PDF English
US$590.00 · In stock · Download in 9 secondsGB/T 21437.2-2021: Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 21437.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 21437.2-2021 | English | 590 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only
| Valid |
| GB/T 21437.2-2008 | English | 145 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Road vehicles -- Electrical disturbances from conduction and coupling -- Part 2: Electrical transient conduction along supply lines only
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 21437.2-2021
GB/T 21437.2-2021: Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 2: Electrical transient conduction along supply lines only
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT21437.2-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.10
CCS T 35
Replacing GB/T 21437.2-2008
Road vehicles - Test method of electrical disturbances from
conduction and coupling - Part 2.Electrical transient
conduction along supply lines only
(ISO 7637-2.2011, Road vehicles - Electrical disturbances from conduction and
coupling - Part 2.Electrical transient conduction along supply lines only, MOD)
Issued on. DECEMBER 31, 2021
Implemented on. JULY 01, 2022
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
Introduction... 6
1 Scope... 7
2 Normative references... 7
3 Terms and definitions... 7
4 Test procedures... 7
4.1 General provisions... 7
4.2 Test temperature and supply voltage... 8
4.3 Voltage transient emission test... 8
4.4 Transient immunity test... 12
5 Test equipment and requirements... 14
5.1 Artificial networks... 14
5.2 Parallel resistor RS... 15
5.3 Switch S... 15
5.4 Power... 17
5.5 Measuring instruments... 17
5.6 Immunity test pulse generator... 18
Appendix A (Informative) Example of test pulse severity levels... 23
Appendix B (Normative) Transient emission assessment - Voltage waveforms... 25
Appendix C (Normative) Verification procedure for test pulse generator... 28
Appendix D (Informative) Determination of pulse generator energy... 31
Appendix E (Informative) Sources of transients in road vehicle's electrical systems 35
Appendix F (Informative) Alternative transient test technique based on
electromechanical switching of inductive loads... 38
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
"Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents".
This document is Part 2 of GB/T 21437 "Road vehicles - Test method of electrical
disturbances from conduction and coupling". The following Parts of GB/T 21437 has been released.
- Part 1.Definitions and general considerations;
- Part 2.Electrical transient conduction along supply lines only;
- Part 3.Electrical transient transmission by capacitive and inductive coupling via
lines other than supply lines.
This document replaces GB/T 21437.2-2008 "Road vehicles - Electrical disturbances
from conduction and coupling - Part 2.Electrical transient conduction along supply
lines only". Compared with GB/T 21437.2-2008, except for structural adjustment and
editorial changes, the main technical changes are as follows.
- CHANGE the "4.3 Voltage transient emission test" to "4.3.1 General provisions",
"4.3.2 Arrangement for slow pulse test", "4.3.3 Arrangement for fast pulse test".
CHANGE the Figure 1, dividing the "Test arrangement for fast pulse transient
emission" into two cases (see 4.3; 4.3 of the 2008 edition);
- CHANGE the "4.4 Transient immunity test" to "4.4.1 DUT Location", "4.4.2 Power
line location", "4.4.3 Load simulator location", "4.4.4 Test arrangement". DELETE
the Figure 2c) -- Illustration on the 5b pulse (see 4.4; 4.4 of the 2008 edition);
- INTEGRATE and SIMPLIFY the measuring instrument in 5.5.DELETE the "Table
2 -- Voltage probe parameters" (see 5.5; 5.5 of the 2008 edition);
- ADD the title "5.6.1 General provisions" to the content of the suspension paragraph
under 5.6; POSTPONE the subsequent clauses accordingly. CHANGE the Us
parameters of test pulse 1, test pulse 2a and 2b, test pulse 3a and 3b in 5.6 (see 5.6;
5.6 of the 2008 edition);
- DELETE the relevant content of "5.6.4 Test pulse 4" and "5.6.5 Test pulse 5a and
5b" (see 5.6.4 and 5.6.5 of the 2008 edition);
- DELETE the content of the "Definition" column in Table C.1 (see Appendix B;
Appendix C of the 2008 edition), which has been defined in GB/T 29259.
This document modifies and adopts ISO 7637-2.2011 "Road vehicles - Electrical
disturbances from conduction and coupling - Part 2.Electrical transient conduction
along supply lines only".
The technical differences, between this document and ISO 7637-2.2011, as well as the
reasons, are as follows.
- In the introductory language of Chapter 3 -- Terms and definitions, USE "GB/T
21437.1" to replace "ISO 7637-1", to adapt to the technical conditions in China and
increase operability;
- ADJSUT the content of the suspension paragraph under 5.6 to "5.6.1 General
provisions"; POSTPONE the subsequent clauses accordingly;
- DELETE 5.6.4 of ISO 7637-2.2011, because this clause has no actual content.
The following editorial changes have also been made to this document.
- COMBINE the descriptions of part a) and part b) of Figure 2; CHANGE the "2" in
Figure 2a) to "2a", "4" to "4a"; CHANGE "2" in Figure 2b) to "2b", "4" to "4b";
- SIMPLIFY Table A.1 and Table A.2; DELETE the redundant footnotes;
- MODIFY Table A.3 with reference to GB/T 33014 (all parts); GIVE notes to
"Category 1, Category 2, Category 3", to facilitate the unified understanding of the
automotive electromagnetic immunity standard as a whole, for easy understanding and use;
- Because the A.2.1 of ISO 7637-2.2011 has no title, ADD the title "General provisions";
- ADD the title "C.2.1 General" to the content of the suspended paragraph under C.2;
POSTPONE the subsequent clauses accordingly;
- Because ISO 7637-2.2011 lacks references to Table C.1, Table C.2, Table C.3,
Table C.4, Table C.5, Table C.6, ADD the reference to these Tables, in C.2.1;
- In Appendix D, ADD the references to Figures D.1 and D.2.
Please note that some content of this document may be patented. The issuing agency of
this document assumes no responsibility for identifying patents.
This document was proposed by the Ministry of Industry and Information Technology
of the People's Republic of China.
This document shall be under the jurisdiction of the National Automotive
Standardization Technical Committee (SAC/TC 114).
This document was first published in 2008.This is the first revision.
1 Scope
This document specifies the test equipment, test methods, requirements for electrical
transient conducted emission and immunity tests of automotive electrical/electronic
components, along power lines.
2 Normative references
The contents of the following documents constitute essential provisions of this
document through normative references in the text. Among them, for dated references,
only the version corresponding to the date applies to this document; for undated
references, the latest version (including all amendments) is applicable to this document.
GB/T 21437.1 Road vehicles - Test method of electrical disturbances from
conduction and coupling - Part 1.Definitions and general considerations (GB/T
21437.1-2021, ISO 7637-1.2015, MOD)
3 Terms and definitions
The terms and definitions, which are defined in GB/T 21437.1, apply to this document.
4 Test procedures
The power line's transient emission and immunity tests, which are mentioned in this
document, are carried out in the laboratory.
During the test, the ambient temperature shall be 23 °C ± 5 °C.
5 Test equipment and requirements
The artificial network replaces the impedance of the vehicle wiring harness. It is used
as a reference standard for impedance, in the laboratory, to determine the performance
of equipment and electrical/electronic devices.
The parallel resistor RS simulates the equivalent resistor of other electrical devices of
the vehicle, which are connected in parallel with the DUT.
Switch S shall be installed in the position. In vehicle's practical applications,
if the line, between the switch and the load, is long, a slow pulse arrangement shall be
used. Otherwise, it should use a fast pulse arrangement.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 21437.2-2021 be delivered?Answer: The full copy PDF of English version of GB/T 21437.2-2021 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 21437.2-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 21437.2-2021_English will be deemed to be sold to your employer/organization who actually paid 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+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 21437.2-2021 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB/T 21437.2-2021?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21437.2-2021 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. How to buy and download a true PDF of English version of GB/T 21437.2-2021?A step-by-step guide to download PDF of GB/T 21437.2-2021_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 21437.2-2021".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|