GB/T 17737.302-2018Coaxial communication cables -- Part 1-302: Mechanical test methods -- Test for eccentricity (English PDF)
同轴通信电缆 第1-302部分:机械试验方法偏心度试验
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
September 17, 2018
Implementation date
April 1, 2019
Scope
GB/T 17737.302-2018 is the English-translated version of 同轴通信电缆 第1-302部分:机械试验方法偏心度试验.
GB/T 17737.302-2018 — This part of GB/T 17737 applies to coaxial communication cables. It specifies the medium, outer conductor or sheath for determining the coaxial communication cable Test method for eccentricity.
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Document preview — GB/T 17737.302-2018
National Standard of the People's Republic of China
- ICS
- 33.120.10
- Classification
- L 26
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 eccentricity test
- 4.1 Principle
- 4.2 Test equipment
- 4.3 Sample preparation
- 4.4 Procedure
Foreword
GB/T 17737 "Coax Cable" has been or is planned to release the following parts.
--- Part 1. General rules, definitions and requirements;
--- Part 1-301. Mechanical test method ellipticity test;
--- Part 1-302. Mechanical test method eccentricity test;
---Part 1-304. Mechanical test method impact test;
--- Part 1-308. Mechanical test methods - Tests for tensile strength and elongation of copper-clad metal;
--- Part 1-310. Mechanical test method Test for torsional characteristics of copper-clad metal;
--- Part 1-313. Mechanical test method Adhesion of medium and sheath;
--- Part 1-314. Mechanical test method cable bending test;
--- Part 1-316. Mechanical test method for maximum tensile test of cables;
--- Part 1-317. Mechanical test method cable compression test;
--- Part 1-318. Mechanical test method thermal performance test;
--- Part 1-324. Mechanical test method cable wear resistance test;
--- Part 1-325. Mechanical test method for wind-induced vibration test;
This part is part 1-302 of GB/T 17737.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part uses the translation method equivalent to IEC 61196-1-302.2005 "coaxial communication cable part 1-302. mechanical test method
Eccentricity test.
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
Coaxial communication cables - Part 1 . General rules, definitions and requirements (IEC 61196-1.
2005, IDT).
1 Scope
This part of GB/T 17737 applies to coaxial communication cables. It specifies the medium, outer conductor or sheath for determining the coaxial communication cable
Test method for eccentricity.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.
IEC 61196-1 coaxial communication cables - Part 1. General specification, definitions and requirements (Coaxialcommunicationca-
bles-Part 1. Genericspecification-General, definitionsandrequirements)
3 Terms and definitions
The terms and definitions defined in IEC 61196-1 apply to this document.
4 eccentricity test
4.1 Principle
The eccentricity of the medium (or outer conductor or shield or sheath) is measured by the cross section of the medium (or outer conductor or shield or sheath) of the cable sample.
The medium (or outer conductor or shield or sheath) is determined by the radial thickness and outer diameter.
4.2 Test equipment
A measuring microscope with a resolution of 0.01 mm should be used. When the measured thickness is less than 0.5 mm, it is estimated to be after the decimal point.
Third place.
Alternatively, a projector/comparator with at least 10x magnification can be used. However, when controversial, it should be measured using a microscope.
4.3 Sample preparation
Three cable samples of about 100 mm in length should be taken from the finished cable, and each sample should be cut at least 1 m apart. When measuring media eccentricity
The external components of the cable medium should be removed at all times.
When measuring the eccentricity of the outer conductor or shield, the outer sheath should be removed.
Both ends of the specimen should be cut vertically and carefully removed, and the burrs should be carefully removed.
4.4 Procedure
Two radial thicknesses in the diameter of the medium (or outer conductor or shield or sheath) passing through the center of the inner conductor should be recorded to determine the minimum medium
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 11 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 17737.308-2018 — Coaxial communication cables -- Part 1-308: Mechanical test methods -- Test for tensile strength and elongation for copper-clad metals
GB/T 17737.301-2018 — Coaxial communication cables -- Part 1-301: Mechanical test methods -- Test for ovality
GB/T 17737.310-2018 — Coaxial communication cables -- Part 1-310: Mechanical test methods -- Test for torsion characteristics of copper-clad metals
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