|
US$314.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 31723.406-2015: Metallic communication cable test methods -- Part 4-6: Electromagnetic compatibility (EMC) -- Surface transfer impedance -- Line injection method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 31723.406-2015 | English | 314 |
Add to Cart
|
3 days [Need to translate]
|
Metallic communication cable test methods -- Part 4-6: Electromagnetic compatibility (EMC) -- Surface transfer impedance -- Line injection method
| Valid |
GB/T 31723.406-2015
|
PDF similar to GB/T 31723.406-2015
Basic data | Standard ID | GB/T 31723.406-2015 (GB/T31723.406-2015) | | Description (Translated English) | Metallic communication cable test methods -- Part 4-6: Electromagnetic compatibility (EMC) -- Surface transfer impedance -- Line injection method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L26 | | Classification of International Standard | 33.120.10 | | Word Count Estimation | 16,143 | | Date of Issue | 2015-06-02 | | Date of Implementation | 2016-02-01 | | Quoted Standard | GB/T 17737.1-2013; IEC 62153-4-3 | | Adopted Standard | IEC 62153-4-6-2006, IDT | | Regulation (derived from) | National Standard Announcement 2015 No.19 | | 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 shielding effectiveness of metallic communication cables. Use a common high-frequency measuring instrument measuring the frequency range from kilohertz to 1 GHz or more. | GB/T 31723.406-2015: Metallic communication cable test methods -- Part 4-6: Electromagnetic compatibility (EMC) -- Surface transfer impedance -- Line injection method
---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.
Metallic communication cable test methods Part 4-6.. Electromagnetic compatibility (EMC) Surface transfer impedance Line injection method
ICS 33.120.10
L26
National Standards of People's Republic of China
Metallic communication cable test methods
Part 4-6. Electromagnetic compatibility
Surface transfer impedance line injection method
Part 4-6. Electromagneticcompatibility (EMC) -
(IEC 62153-4-6.2006, IDT)
Issued on. 2015-06-02
2016-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 1 General
4.1 Internal and external circuitry 1
4.2 transfer impedance ZT 1
4.3 sample length 2
5 test apparatus 2
5.1 Overview 2
5.2 Equipment 3
5.3 Transmitter 4
5.4 impedance matching circuit 6
6 of 8 test sample preparation
6.1 Overview 8
6.2 shielded symmetrical cable 9
6.3 shielded multi-core cable 9
7 Measuring 9
7.1 Overview 9
7.2 Measurement Considerations 9
7.3 Calibration 10
7.4 Measuring procedure 10
Assessment of test results 11 7.5
8 test results showing 12
8.1 represents 12
8.2 Temperature Correction 12
8.3 Test Report 12
Requirements 9 12
Foreword
GB/T 31723 "Metallic communication cable test methods" have been or are part of EMC plans to release the following sections.
--- Part 4-0. EMC surface transfer impedance and shield attenuation relationship between the recommended limits;
--- Part 4-1. EMC shielding introduce measurement;
--- Part 4-2. EMC shielding and coupling attenuation clamp injection method;
--- Part 4-3. Electromagnetic compatibility triaxial surface transfer impedance method;
--- Part 4-4. EMC shielding attenuation up to 3GHz and higher frequency shielding attenuation measurement method;
--- Part 4-5. EMC coupling or screening attenuation - Absorbing clamp method;
--- Part 4-6. EMC surface transfer impedance line injection method;
--- Part 4-7. Electromagnetic compatibility transfer impedance, shielded or coupling attenuation tube tube method;
--- Part 4-8. Electromagnetic compatibility capacitive coupling admittance.
This section GB/T Part of 4-631723.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section uses the translation method identical with IEC 62153-4-6.2006 "Metallic communication cable test methods - Part 4-6. Electromagnetic compatibility
Surface transfer impedance line injection method. "
This part made the following editorial changes.
--- All the relevant parameters of the original external circuit and the external system by the subscript 1 indicates, all internal circuitry and internal systems
Related parameters with subscript 2 represents;
--- 5.4.4 in the "load impedance R1" change-oriented part of the "load impedance R2".
Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.
This part is proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This section is under the jurisdiction of the National electronic equipment with a high-frequency cables and connectors Standardization Technical Committee (SAC/TC190).
This section is responsible for drafting units. China Electronics Standardization Institute.
The main drafters of this section. Peng, Wu Zhengping.
Metallic communication cable test methods
Part 4-6. Electromagnetic compatibility
Surface transfer impedance line injection method
1 Scope
GB/T 31723 in this section by the predetermined voltage and current applied to the cable shield and measuring the induced voltage obtained surface transfer
Shift impedance method to determine the shielding effectiveness of metallic communication cables.
Use a common high-frequency measuring instruments to measure the frequency range from kilohertz to 1GHz or more.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 17737.1-2013 Coaxial communication cables - Part 1. Generic specification - General, definitions and requirements (IEC 61196-1.2005,
IDT)
IEC 62153-4-3 Metallic communication cable test methods - Part 4-3 EMC surface transfer impedance triaxial method
[Metaliccommunicationcabletestmethods-ElectromagneticCompatibility (EMC) -Surfacetransfer
impedance-Triaxialmethod]
3 Terms and Definitions
Terms and definitions GB/T 17737.1-2013 given apply to this document.
4 General
4.1 Internal and external circuitry
An external circuit (wire injection circuit) is fed into the circuit, the shielding layer and the surface composition of the injection line, the relevant parameters indicated by the subscript 1. Internal power
Road (the cable under test, hereinafter referred to as CUT) is a measure of the induced voltage circuit parameters with the subscript 2 indicates.
4.2 Transfer impedance ZT
Transfer impedance ZT shielding is an important parameter to determine the efficiency of the cable shield.
For a short period of electrical cable length uniformity, longitudinal transfer impedance is defined as the induced voltage per unit length of the internal circuit CUT
And an external circuit (circuit line injection) current ratio, and vice versa.
Most cable capacitive coupling is negligible. But for single loose braided shield cable, capacitive coupling can not be ignored. by
Shield aperture coupled with capacitance by CT or capacitive coupling admittance YC description. For a short while the electrical length of the cable is uniform, YC set
It is defined as the ratio of the internal circuit current and external circuit voltage per unit length, and vice versa.
When the capacitive coupling can not be ignored, shielding effectiveness is represented by an equivalent transfer impedance ZTE.
ZTE = maxZF ± ZT (1)
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 31723.406-2015_English be delivered?Answer: Upon your order, we will start to translate GB/T 31723.406-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 31723.406-2015_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 31723.406-2015_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+ countriesQuestion 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 [email protected]. 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.
|