【国外标准】 Standard Test Methods for Electrical Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable

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.1.1 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 SectionsElectrical Tests of Insulation—In-process 5 – 9     DC proof test 9     Insulation Defect or Fault Rate 8     Spark Test 7Electrical 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 441.3 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.