Mutual Capacitance

This test measures the funtional capacitance between a pair of insulated wires within an multi-pair cable. Capacitance measurements are made between the two conductors under test and between each conductor and the components not under test (shield, other conductors) shorted together. These values are then used to calculate the mutual capacitance for the pair within […] Read more

Mutual Inductance

It is critical that signal-carrying conductors within a larger cable construction each be able to effectively perform their separate functions without electrical interference. A source of electrical interference can distort a signal carried on a wire, drastically affecting the functionality of the system. The mutual inductance test measures the effectiveness of the insulation on inner […] Read more

Nitric Acid Immersion (Acid Resistance)

The Nitric acid immersion test determines the ability of a wire’s insulation to resist breakdown in the presence of a strong acid. Test samples are submerged in red fuming nitric acid for a duration of 8 hours. Resistance to the acid is determined via a wet dielectric test – any dielectric breakdown is considered a […] Read more

Nominal Electric Resistance per Unit Length

This test is used to calculate the nominal resistance per length based on the resistivity and cross-sectional area of the round wire sample. Read more

Outer Conductor Integrity

The outer conductor integrity test is designed to evaluate the ability of an outer conductor material to withstand heat exposure and subsequent soldering. Samples are placed into an oven at the specified temperature for no less than 1 hour and 30 minutes. After the heat exposure, samples are maintained at room temperature for no less […] Read more

Jacket Color

Insulation color is often used to identify a wire or cable’s system or function(s). The jacket color test evaluates the characteristics of an insulative jacket’s color as compared to the limitations specified in the applicable standard. This testing procedure applies the Munsell Notation of color categorization in which colors are defined by hue, value, and […] Read more

Heat Distortion

The heat distortion test evaluates the ability of an insulator or jacket to maintain its physical structure without deformation under elevated temperature conditions. Distortion of the insulation or outer jacket can create an uneven insulative surface on a conductor; areas with reduced insulation coverage are more susceptible to damage. Distortion also increases the possibility for […] Read more

Flexibility

The flexibility of a wire/cable is dependent on a combination of the conductor and insulation constructions. Wire/ cable constructions with more conductor strands are often better able to endure flexing without breaking whereas more rigid constructions are more likely to crack or break over periods of excess mechanical stress. The flexibility of a wire or […] Read more

Flex Life at Crimp Termination

This test evaluates the ability of a terminated wire sample to maintain its structural integrity under conditions of repeated stress at the point of termination. The location of a crimp termination on a wire is more likely to experience conditions of mechanical stress than other locations along the length of the wire. It is crucial […] Read more

Phase Constant

A phase constant is a physical property of a propagating sine wave representing the shift in phase the wave experiences while travelling along its path. This test measures the phase constant of a twisted pair cable as a value of radians per length. Lectromec uses a spectrum analyzer to make all relevant measurements in determining […] Read more

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