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GB/T 17737.301-2018Coaxial communication cables -- Part 1-301: Mechanical test methods -- Test for ovality (English PDF)

同轴通信电缆 第1-301部分:机械试验方法 椭圆度试验

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

March 15, 2018

Implementation date

October 1, 2018

Scope

GB/T 17737.301-2018 is the English-translated version of 同轴通信电缆 第1-301部分:机械试验方法 椭圆度试验.

GB/T 17737.301-2018 — This part of GB/T 17737 applies to coaxial communication cables. It stipulates the determination of the insulation, outer conductor and jacket or protection of coaxial cable Layer ovality test method.

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Document preview — GB/T 17737.301-2018

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 Ellipticity test
  • 4.1 Principle
  • 4.2 Test Equipment
  • 4.3 sample preparation
  • 4.4 Procedures

Foreword

GB/T 17737 "Coaxial Communication Cable" has or plans to issue the following parts.

--- Part 1. General rules, definitions and requirements;

--- Section 1-31 . Mechanical test methods ; Ellipticity test ;

-- Part 1-302 . Mechanical test methods ; eccentricity test ;

-- Part 1-304 . Mechanical test methods ; Impact test ;

Part 1-108 . Mechanical test methods -- Tensile strength and elongation test of copper clad metal ;

--- Part 1-310. Mechanical test methods Torsional characteristics of copper clad metal;

--- Part 1-313. Mechanical test methods Adhesion of media and sheath;

--- Part 1-314. Mechanical test methods Bending test of cables;

--- Part 1-316. Mechanical test methods Maximum tensile strength test of cables;

--- Part 1-317. Mechanical test methods Cable compression test;

--- Sections 1-318. Mechanical test methods Thermal performance test;

--- Part 1-324 . Mechanical test methods Cable abrasion resistance test ;

--- Part 1-325 . Mechanical test methods Wind - induced vibration test ;

This section is part 1-301 of GB/T 17737.

This section was drafted in accordance with the rules given in GB/T 1.1-2009.

This section uses the translation method equivalent to using IEC 61196-1-301.2005 "coaxial communication cable Part 1-301. mechanical test method

Ellipticity test."

The Chinese documents that have a consistent correspondence with the normatively quoted international documents in this section are as follows.

---GB/T 17737.1-2013 Coaxial telecommunication cables Part 1. General specifications General, definitions and requirements (IEC 61196-1.

2005, IDT).

1 Scope

This part of GB/T 17737 applies to coaxial communication cables. It stipulates the determination of the insulation, outer conductor and jacket or protection of coaxial cable

Layer ovality test method.

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 version (including all amendments) applies to this document.

IEC 61196-1 Coaxial Communication Cables Part 1. Generic Specification General, Definitions and Requirements (Coaxialcommunicationca-

bles-Part 1.Generic specification-General,definitionsandrequirements)

3 Terms and definitions

The terms and definitions defined by IEC 61196-1 apply to this document.

4 Ellipticity test

4.1 Principle

The ellipticity of the cable is determined by measuring two orthogonal diameters on the cross-section of the finished cable specimen.

4.2 Test Equipment

The resolution of the instrument is 0.01mm. The following instruments can be used.

--- Microscope. Can be read to the third decimal place;

--- Projection measuring instrument. Magnification at least 10 times;

--- Caliper;

---micrometer.

4.3 sample preparation

Three specimens were taken from the finished cable, each specimen having a cut-off interval of at least 100 mm. According to the relevant sub-specification or detailed regulations

Make sure that the cross-section of each specimen should be cut flat and carefully clean the burrs.

4.4 Procedures

The outer diameter of the cable was measured twice for each cross-section and the diameters measured should be perpendicular to each other.

Each time a measurement is taken, an appropriate position is selected. Both diameters are perpendicular to each other and give their maximum difference.

......
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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