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.
Область применения1.1 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.