ASTM D4566 Standard Test Methods for Electrical Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable
ASTM D4566远程通信电线和电缆用绝缘体和套管的电气性能特性的标准试验方法
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 may 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 The test methods appear in the following sections of this standard:
Test Method

Sections

Electrical Tests of Insulation—InProcess

48

DC proof test

8

Insulation defect or fault rate

7

Spark test

6

Electrical Tests of Completed Wire and Cable

951

Attenuation

24

Attenuation, effects due to aging

31

Attenuation, effects due to elevated temperature

29

Attenuation, effects due to humidity

30

Attenuation to crosstalk ratio—far end (ACRF)

28

Attenuation to crosstalk ratio—near end (ACRN)

26

Capacitance deviation

19

Capacitance difference

20

Capacitance unbalance, Pairtoground (CUPG)

22

Capacitance unbalance, Pairtopair (CUPP)

21

Capacitance unbalance, Pairtosupport wire

23

Characteristic Impedance—Method 1 Propagation constant
and capacitance 
47

Characteristic Impedance—Method 2, Singleended
measurements 
48

Characteristic Impedance—Method 3 Least Squares Function Fit

49

Coaxial capacitance (capacitance to water)

17

Conductor continuity

11

Conductor resistance (CR)

13

Conductor resistance unbalance (CRU of pairs)

15

Continuity of other metallic elements

12

Crosses test (continuity between wires of different pairs)

35

Crosstalk loss, farend

27

Crosstalk loss, nearend

25

DC proof test, Coretointernal shield (screen)

40

DC proof test, Coretoshield

38

DC proof test, Coretosupport wire

39

DC proof test, Internal shield (screen)toshield

41

DC proof test, Other required isolations

42

DC proof test, Wiretowire

37

Fault rate test (air core only)

33

Insulation resistance (IR)

32

Jacket voltage breakdown rating test

36

Mutual capacitance (CM)

18

Mutual conductance

16

Phase Constant

44

Phase Delay

45

Phase Velocity

46

Resistance of other metallic cable elements

14

Shorts test (continuity between wires of a pair)

34

Structural Return Loss and Return Loss

50

Unbalance attenuation (conversion losses)

51

Voltage surge test

43

1.3 The values stated in inchpound 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Sections 6 and 37.
4.1 Inprocess electrical tests are used primarily as process control tools in an attempt to minimize the number and magnitude of problems detected at final test of completed cable.
9.1 Electrical tests of completed wire and cable may include verification of some or all of the properties in accordance with Sections 11 through 51.
2. Referenced Documents (purchase separately)
ASTM Standards
B193 Test Method for Resistivity of Electrical Conductor Materials
D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
D1711 Terminology Relating to Electrical Insulation
D2633 Test Methods for Thermoplastic Insulations and Jackets for Wire and Cable
D3426 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Using Impulse Waves
D5423 Specification for ForcedConvection Laboratory Ovens for Evaluation of Electrical Insulation
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
D1711 Terminology Relating to Electrical Insulation
D2633 Test Methods for Thermoplastic Insulations and Jackets for Wire and Cable
D3426 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Using Impulse Waves
D5423 Specification for ForcedConvection Laboratory Ovens for Evaluation of Electrical Insulation
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ANSI Standard
ANSI/IEEEStandard100 IEEE Standard Dictionary of Electrical and Electronics Terms
IEC Standard
IEC611561 Multicore and Symmetrical Pair/Quad Cables for Digital CommunicationsPart 1: Generic Specification
Index Terms
aging; attenuation; attenuation to crosstalk ratio nearend; attenuation to crosstalk ratio farend; capacitance deviation; capacitance difference; capacitance unbalance pairtopair; capacitance unbalance pairtoground; capacitance unbalance pairtosupport wire; characteristic impedance; coaxial capacitance; conductor resistance; conductor resistance unbalance; continuity; conversion loss; crosses; crosstalk loss—far end; crosstalk loss—near end; dc proof test; equal level farend crosstalk; equal level unbalance attenuation farend; equal level unbalance attenuation nearend; equal level longitudinal conversion transfer loss (EL LCTL); equal level transverse conversion transfer loss (EL TCTL); fault rate test; humidity; insulation defect; insulation resistance; jacket voltage breakdown; longitudinal conversion loss (LCL); longitudinal conversion transfer loss (LCTL); mutual capacitance; mutual conductance; phase constant; phase delay; phase velocity; shorts test; spark test; structural return loss; transverse conversion loss (TCL); transverse conversion transfer loss (TCTL); unbalance attenuation farend; unbalance attenuation nearend; voltage surge test; Aging; Attenuation; Capacitance difference/deviation/unbalance; Characteristic impedance; Coaxial capacitance; Communications; Conductor continuity/resistance; Cross section data/analysisinsulation; DC voltage test; Defects; Spark testing; Structural return loss; Telecommunications; Thicknesselectrical insulating materials; Voltage surge test; Electrical performance; Fault rate; Impedance; Jacket voltage breakdown; Insulated wire and cable; Insulation adhesion//compression//shrinkback; Insulation defects; LCL/LCTL (longitudinal conversion/transfer loss); Insulation resistance; Jacket bonding//notch//peel//shrinkback//slip strength; Melt flow; Mutual conductance/capacitance; Oil immersion; Performanceelectrical insulation; Phase delay/constant/velocity; Shorts test;