ASTM D4566 Standard Test Methods for Electrical Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable
ASTM D4566遠(yuǎn)程通信電線和電纜用絕緣體和套管的電氣性能特性的標(biāo)準(zhǔn)試驗(yàn)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—In-Process
|
4-8
|
|
DC proof test
|
8
|
|
Insulation defect or fault rate
|
7
|
|
Spark test
|
6
|
|
Electrical Tests of Completed Wire and Cable
|
9-51
|
|
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 (ACR-F)
|
28
|
|
Attenuation to crosstalk ratio—near end (ACR-N)
|
26
|
|
Capacitance deviation
|
19
|
|
Capacitance difference
|
20
|
|
Capacitance unbalance, Pair-to-ground (CUPG)
|
22
|
|
Capacitance unbalance, Pair-to-pair (CUPP)
|
21
|
|
Capacitance unbalance, Pair-to-support wire
|
23
|
|
Characteristic Impedance—Method 1 Propagation constant
and capacitance |
47
|
|
Characteristic Impedance—Method 2, Single-ended
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, far-end
|
27
|
|
Crosstalk loss, near-end
|
25
|
|
DC proof test, Core-to-internal shield (screen)
|
40
|
|
DC proof test, Core-to-shield
|
38
|
|
DC proof test, Core-to-support wire
|
39
|
|
DC proof test, Internal shield (screen)-to-shield
|
41
|
|
DC proof test, Other required isolations
|
42
|
|
DC proof test, Wire-to-wire
|
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 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 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 In-process 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 Forced-Convection 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 Forced-Convection 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
IEC61156-1 Multicore and Symmetrical Pair/Quad Cables for Digital Communications--Part 1: Generic Specification
Index Terms
aging; attenuation; attenuation to crosstalk ratio near-end; attenuation to crosstalk ratio far-end; capacitance deviation; capacitance difference; capacitance unbalance pair-to-pair; capacitance unbalance pair-to-ground; capacitance unbalance pair-to-support 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 far-end crosstalk; equal level unbalance attenuation far-end; equal level unbalance attenuation near-end; 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 far-end; unbalance attenuation near-end; voltage surge test; Aging; Attenuation; Capacitance difference/deviation/unbalance; Characteristic impedance; Coaxial capacitance; Communications; Conductor continuity/resistance; Cross section data/analysis--insulation; D-C voltage test; Defects; Spark testing; Structural return loss; Telecommunications; Thickness--electrical 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; Performance--electrical insulation; Phase delay/constant/velocity; Shorts test;
