GB/T 21437.3-2021 PDF English
US$365.00 · In stock · Download in 9 secondsGB/T 21437.3-2021: Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines 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 21437.3: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 21437.3-2021 | English | 365 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
| Valid |
| GB/T 21437.3-2012 | English | 150 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Road vehicles -- Electrical disturbances from conduction and coupling -- Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 21437.3-2021
GB/T 21437.3-2021: Road vehicles - Test method of electrical disturbances from conduction and coupling - Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
---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/GBT21437.3-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.10
CCS T 35
Replacing GB/T 21437.3-2012
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 methods... 8
4.1 Overview... 8
4.2 Standard test conditions... 9
4.3 Grounding plate... 9
4.4 Test arrangement... 9
4.5 Capacitive coupling clamp method... 10
4.6 Direct capacitor coupling method... 12
4.7 Inductive coupling clamp method... 17
5 Test device... 19
5.1 Power... 19
5.2 Oscilloscope and probes... 19
5.3 Transient pulse generator... 19
5.4 Capacitive coupling clamp... 23
5.5 Direct capacitor coupling... 24
5.6 Inductive coupling clamp... 25
Appendix A (Normative) Calibration fixtures for the ICC method... 26
Appendix B (Informative) Example of severity levels of test pulse... 27
B.1 General provisions... 27
B.2 Severity level of test pulse... 27
B.3 Application example of classification of test pulse's severity level... 28
Appendix C (Informative) Estimation of inductive coupling coefficients... 29
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 3 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 21437.3-2012 "Road vehicles - Test method of electrical
disturbances from conduction and coupling - Part 3.Electrical transient transmission
by capacitive and inductive coupling via lines other than supply lines". Compared with
GB/T 21437.3-2012, except for structural adjustment and editorial changes, the main
technical changes are as follows.
- SIMPLIFY the Scope; MOVE the relevant content into 4.1 (see Chapter 1, 4.1;
Chapter 1 of the 2012 edition);
- In the Scope of application of the standard, DELETE the "42 V" electrical system
(see Chapter 1; Chapter 1 of the 2012 edition);
- CHANGE the thickness of the grounding plate, from "minimum 1 mm" to
"minimum 0.5 mm" (see 4.3; 3.3 of the 2012 edition);
- In the CCC test, CHANGE that "the length of the tested wiring harness shall not
exceed 2 m" into that "the total length of the tested wiring harness is
mm" (see 4.5.4; 3.4.2 of the 2012 edition);
- In the DCC test, CHANGE that "the length of the wire harness shall be between
1000 mm and 2000 mm" into that "the length of the wire harness shall be
mm" (see 4.6.4; 3.4.3 of the 2012 edition);
- In the ICC test, CHANGE "Test harness (length ≤ 2 m)" into that "The length of
the harness shall be mm" (see 4.7.3; 3.4.4 of the 2012 edition);
- ADD the specific method and schematic diagram of DCC level calibration (see 4.6.3);
- ADD the specific method and schematic diagram of ICC method level calibration
(see 4.7.2; 3.4.4 of the 2012 edition);
- CHANGE the test arrangement of DCC method, respectively giving different
arrangement methods of fast pulse and slow pulse (see 4.6.4; 3.4.3 of the 2012 edition);
- CHANGE the fast pulse from "fast pulse a, b" into "fast pulse 3a, 3b"; MAKE
appropriate adjustment of the pulse parameters tr and td, to be consistent with pulses
3a and 3b in GB/T 21437.2 (see 5.3.3; 4.3.2 of the 2012 version);
- For the slow pulse, CHANGE it from "slow pulse - positive pulse, negative pulse"
into "slow pulse - positive pulse 2a, negative pulse 2a"; MAKE appropriate
adjustment of the parameters tr, t1, to be consistent with the pulse 2a in GB/T
21437.2 (see 5.3.2; 4.3.3 of the 2012 edition).
This document modifies and adopts ISO 7637-3.2016 "Road vehicles - Electrical
disturbances from conduction and coupling - Part 3.Electrical transient transmission
by capacitive and inductive coupling via lines other than supply lines".
The technical differences, between this document and ISO 7637-3.2016, as well as the
reasons, are as follows.
- MODIFY and SIMPLIFY the Scope, clarifying the electrical/electronic
components for vehicles of categories M, N, O, L;
- USE the normative reference GB/T 21437.1 to replace ISO 7637-1 (see Chapter 3),
to adapt to the technical conditions in China and increase operability;
- USE the normative reference GB/T 21437.2 to replace ISO 7637-2 (see 4.5.2, 5.2,
5.3.1), to adapt to the technical conditions in China and increase operability;
- DELETE the "4.7.2 Generator verification" in ISO 7637-3.2016, which does not
conform to Chinese expression habits and has no substantial content; POSTPONE
the subsequent clauses accordingly;
- USE the normative reference GB/T 33014.4 to replace ISO 11452-4 (see 4.7.3), to
adapt to the technical conditions in China and increase operability;
The following editorial changes have been made to this document.
- COMBINE the descriptions of the two sub-graphs in Figure 3; CHANGE "2" to
"2a", "4" to "4a", "6" to "6a", "7" to "8" in Figure 3a); CHANGE "2" to "2b", "4"
to "4b", "6" to "6b" in Figure 3b);
- ADJUST the title and numbering of Figures 4 and 5;
- COMBINE the descriptions of the two sub-graphs in Figure 4; CHANGE "9" to
"9a" in Figure 4a); CHANGE "9" to "9b" in Figure 4b);
- COMBINE the descriptions of the two sub-graphs in Figure 5; CHANGE "9" to
"10" in Figure 5a); CHANGE the footnotes "a, b" to "b, c" in Figure 5b);
- Table 4 is not mentioned in the main text of ISO 7637-3.2016, which is
supplemented in 5.3.2;
- STANDARDIZE the headers of Table 4 and Table 5;
- The main text of ISO 7637-3.2016 does not mention Appendix A; in this document,
ADD "Appendix A -- Examples of calibration fixtures" in 4.7;
- DELETE and ADJUST some repeated or redundant notes in Appendix B.
PROVIDE notes for Category 1, Category 2, Category 3 of Appendix B, to
facilitate understanding and use.
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 2012.This is the first revision.
1 Scope
This document specifies a bench test method, for the immunity of electrical/electronic
components to electrical transients, which are coupled to non-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)
GB/T 21437.2 Road vehicles - Test method of electrical disturbances from
conduction and coupling - Part 2.Electrical transient conduction along supply lines
only (GB/T 21437.2-2021, ISO 7637-2.2011, MOD)
GB/T 33014.4 Road vehicles - Component test methods for electrical/electronic
disturbances from narrowband radiated electromagnetic energy - Part 4.Bulk
current injection (BCI) (GB/T 33014.4-2016, ISO 11452-4.2005, MOD)
3 Terms and definitions
The terms and definitions, which are defined in GB/T 21437.1, apply to this document.
4 Test methods
The test needs to be carried out in a laboratory.
The test transient pulse simulates fast and slow electrical transient disturbances, such
as those caused by inductive load switching, relay contacts bouncing, etc. The test
pulses, which are given in this Part, are typical pulses, reflecting the main characteristics
of transient pulses, that may appear in the vehicle.
The grounding plate shall be a metal sheet, which has a minimum thickness of 0.5 mm.
The minimum width of the grounding plate shall be 1000 mm, OR the width below the entire test
arrangement plus 200 mm, whichever is larger.
5 Test device
It shall use the power supply, which is specified in GB/T 21437.2.
It shall use the oscilloscope and probe, which is specified in GB/T 21437.2.
It shall use the pulse generator, which is specified in GB/T 21437.2.
......
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 21437.3-2021 be delivered?Answer: The full copy PDF of English version of GB/T 21437.3-2021 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 21437.3-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 21437.3-2021_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 21437.3-2021 -- 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 21437.3-2021?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21437.3-2021 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 21437.3-2021?A step-by-step guide to download PDF of GB/T 21437.3-2021_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 21437.3-2021".
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
|