ASTM D4566-20
Standard Test Methods for Electrical Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable
| Language: | English |
| Released: | 2020-11-06 |
| Pages: | 30 |
| Standards number: | ASTM D4566-20 |
| Standard number: | D4566-20 |
| Released: | 01.10.2020 |
| Status: | Active |
| Pages: | 30 |
| Section: | 10.02 |
| Keywords: | aging; attenuation; attenuation to crosstalk ratio far-end; attenuation to crosstalk ratio near-end; capacitance deviation; capacitance difference; capacitance unbalance pair-to-ground; capacitance unbalance pair-to-pair; 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 longitudinal conversion transfer loss (EL LCTL); equal level transverse conversion transfer loss (EL TCTL); equal level unbalance attenuation far-end; equal level unbalance attenuation near-end; 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 ; |
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 | 9 |
| Insulation Defect or Fault Rate | 8 |
| Spark Test | 7 |
| Electrical Tests of Completed Wire and Cable | 10 – 52 |
| Attenuation | 25 |
| Attenuation, Effects Due to Aging | 32 |
| Attenuation, Effects Due to Elevated Temperature | 30 |
| Attenuation, Effects Due to Humidity | 31 |
| Attenuation to Crosstalk Ratio—Far End (ACR-F) | 29 |
| Attenuation to Crosstalk Ratio—Near End (ACR-N) | 27 |
| Capacitance Deviation | 20 |
| Capacitance Difference | 21 |
| Capacitance Unbalance, Pair-to-ground (CUPG) | 23 |
| Capacitance Unbalance, Pair-to-pair (CUPP) | 22 |
| Capacitance Unbalance, Pair-to-support Wire | 24 |
| Characteristic Impedance—Test Method 1: Propagation Constant and Capacitance | 48 |
| Characteristic Impedance—Test Method 2: Single-ended Measurements | 49 |
| Characteristic Impedance—Test Method 3: Least Squares Function Fit | 50 |
| Coaxial Capacitance (Capacitance to Water) | 18 |
| Conductor Continuity | 12 |
| Conductor Resistance (CR) | 14 |
| Conductor Resistance Unbalance (CRU of Pairs) | 16 |
| Continuity of Other Metallic Elements | 13 |
| Crosses Test (Continuity Between Wires of Different Pairs) | 36 |
| Crosstalk Loss, Far-end | 28 |
| Crosstalk Loss, Near-end | 26 |
| DC Proof Test, Core-to-internal Shield (Screen) | 41 |
| DC Proof Test, Core-to-shield | 39 |
| DC Proof Test, Core-to-support Wire | 40 |
| DC Proof Test, Internal Shield (Screen)-to-shield | 42 |
| DC Proof Test, Other Required Isolations | 43 |
| DC Proof Test, Wire-to-wire | 38 |
| Fault Rate Test (Air Core Only) | 34 |
| Insulation Resistance (IR) | 33 |
| Jacket Voltage Breakdown Rating Test | 37 |
| Mutual Capacitance (CM) | 19 |
| Mutual Conductance | 17 |
| Phase Constant | 45 |
| Phase Delay | 46 |
| Phase Velocity | 47 |
| Resistance of Other Metallic Cable Elements | 15 |
| Shorts Test (Continuity Between Wires of a Pair) | 35 |
| Structural Return Loss and Return Loss | 51 |
| Unbalance Attenuation (Conversion Losses) | 52 |
| Voltage Surge Test | 44 |
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.