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.
1.1 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) |
ASTM D4566-08 history
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