ASTM D4566-20

ASTM D4566-20 - 1.10.2020

Significance and Use

6.1 Electrical tests, properly interpreted, provide information with regard to the electrical properties of the insulation. The electrical test values give an indication as to how the insulation will perform under conditions similar to those observed in the tests. Electrical tests provide data for research and development, engineering design, quality control, and acceptance or rejection under specifications.

1. Scope

1.1 These test methods cover procedures for electrical testing of thermoplastic insulations and jackets used on telecommunications wire and cable and for the testing of electrical characteristics of completed products. To determine the procedure to be used on the particular insulation or jacket compound, or on the end product, reference should be made to the specification for the product.

1.2 These test methods appear in the following sections of this standard:

Test Method

Sections

Electrical Tests of Insulation—In-process

5 – 9

DC proof test

Insulation Defect or Fault Rate

Spark Test

Electrical Tests of Completed Wire and Cable

10 – 52

Attenuation

Attenuation, Effects Due to Aging

Attenuation, Effects Due to Elevated Temperature

Attenuation, Effects Due to Humidity

Attenuation to Crosstalk Ratio—Far End (ACR-F)

Attenuation to Crosstalk Ratio—Near End (ACR-N)

Capacitance Deviation

Capacitance Difference

Capacitance Unbalance, Pair-to-ground (CUPG)

Capacitance Unbalance, Pair-to-pair (CUPP)

Capacitance Unbalance, Pair-to-support Wire

Characteristic Impedance—Test Method 1: Propagation Constant and Capacitance

Characteristic Impedance—Test Method 2: Single-ended Measurements

Characteristic Impedance—Test Method 3: Least Squares Function Fit

Coaxial Capacitance (Capacitance to Water)

Conductor Continuity

Conductor Resistance (CR)

Conductor Resistance Unbalance (CRU of Pairs)

Continuity of Other Metallic Elements

Crosses Test (Continuity Between Wires of Different Pairs)

Crosstalk Loss, Far-end

Crosstalk Loss, Near-end

DC Proof Test, Core-to-internal Shield (Screen)

DC Proof Test, Core-to-shield

DC Proof Test, Core-to-support Wire

DC Proof Test, Internal Shield (Screen)-to-shield

DC Proof Test, Other Required Isolations

DC Proof Test, Wire-to-wire

Fault Rate Test (Air Core Only)

Insulation Resistance (IR)

Jacket Voltage Breakdown Rating Test

Mutual Capacitance (CM)

Mutual Conductance

Phase Constant

Phase Delay

Phase Velocity

Resistance of Other Metallic Cable Elements

Shorts Test (Continuity Between Wires of a Pair)

Structural Return Loss and Return Loss

Unbalance Attenuation (Conversion Losses)

Voltage Surge Test

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Sections 7 and 38.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

D5423-23	Standard Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
D150-22	Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
D2633-21	Standard Test Methods for Thermoplastic Insulations and Jackets for Wire and Cable
D1711-24	Standard Terminology Relating to Electrical Insulation
D3426-19	Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Using Impulse Waves
IEC 61156-1	Multicore and Symmetrical Pair/Quad Cables for Digital Communications--Part 1: Generic Specification
B193-20	Standard Test Method for Resistivity of Electrical Conductor Materials
ANSI/IEEE Standard 100	IEEE Standard Dictionary of Electrical and Electronics Terms Available from Global Engineering Documents, 15 Inverness Way, East Englewood, CO 80112-5704, http://www.global.ihs.com.
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications