Overview
IEC 61196-1-106:2008 is an international standard developed by the International Electrotechnical Commission (IEC) that specifies electrical test methods for coaxial communication cables, focusing on the withstand voltage of the cable sheath. This part of the IEC 61196 series defines a standardized procedure to determine the electrical insulation strength of the cable sheath by conducting voltage withstand tests under controlled conditions.
The standard ensures the reliability and safety of coaxial communication cables by verifying that the sheath can withstand specified voltages without breakdown. This test primarily serves as a proof test or type test to validate cable manufacturing quality and electrical performance.
Key Topics
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Scope of Application
Applies specifically to coaxial communication cables and addresses test methods for the sheath's dielectric withstand voltage.
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Test Principle
The withstand voltage test is performed by immersing the cable sheath in water, applying an a.c. test voltage between the cable conductor and the water, and monitoring for electrical breakdown.
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Test Equipment
Requires a metallic water tank equipped with suitable electrodes and an a.c. power supply operating between 40 Hz and 60 Hz capable of delivering voltages from 0.8 kV up to 5 kV r.m.s., adjustable according to sheath thickness.
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Sample Preparation
Cable samples are cut to specified lengths, with the cable sheath removed at one end to contact the cable screen to the power supply.
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Test Procedure
The cable is immersed in water at 15 °C to 35 °C for one hour. After immersion, the prescribed test voltage is applied for 1 to 2 minutes between the outer conductor and the water. Test voltage levels depend on the nominal sheath thickness, from 1 kV for sheaths up to 0.5 mm thickness to 5 kV for thicknesses over 1.0 mm.
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Test Report Requirements
Reports must detail test conditions including temperature, sample length, test voltage and frequency, test duration, and the pass/fail result based on voltage breakdown occurrence.
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Performance Requirement
The sheath must show no electrical breakdown during the test to meet the standard's requirements.
Applications
IEC 61196-1-106:2008 is fundamental for manufacturers and quality assurance teams working with coaxial communication cables in diverse industries, including:
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Telecommunications: Ensuring coaxial cables used for data and voice communication maintain insulation integrity for safe and reliable transmissions.
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Broadcasting: Verifying cable durability and electrical safety in transmission systems for radio and television signals.
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Industrial and Military: Validating cable robustness in demanding electrical environments, where withstand voltage is critical for operational safety.
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Cable Design and Testing: Providing a benchmark method for manufacturers during cable development, type approval, and routine quality control.
By ensuring cable sheath integrity, this standard helps prevent failures caused by electrical breakdown, reducing downtime, maintenance costs, and safety hazards.
Related Standards
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IEC 61196-1: Coaxial communication cables - Part 1: Generic specification – general definitions and requirements. This foundational document provides the terms, definitions, and general requirements referenced by IEC 61196-1-106.
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Other parts of the IEC 61196 series: Cover various mechanical, environmental, and electrical test methods for coaxial communication cables, complementing the withstand voltage testing to ensure overall cable performance.
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ISO/IEC Directives Part 2: Guidelines on drafting international standards, under which IEC 61196-1-106 was developed.
Keywords
IEC 61196-1-106, coaxial communication cables, withstand voltage test, cable sheath testing, electrical test methods, dielectric strength, cable insulation test, coaxial cable quality, IEC standards for cables, cable type test, voltage breakdown test, sheath dielectric test.
Open preview (PDF)Coaxial communication cables - Part 1-106: Electrical test methods - Test for withstand voltage of cable sheath
