Glossary

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There are 6 names in this directory beginning with the letter U.
UL
Underwriters Laboratories. An organization which tests and verifies construction and performance of electronics parts and equipment.

Ultraviolet (UV) Inhibitor
Chemicals in a PVC insulation compound protect the insulation from breaking down when exposed to sunlight.

Ultraviolet Degradation
The degradation caused by long time exposure of a material to sunlight or other ultraviolet rays containing radiation.

Unidirectional Concentric Stranding
A stranding where each successive layer has a different lay length, thereby retaining a circular form without migration of strands from on layer to another.

Unidirectional Stranding
A term denoting that in a stranded conductor all layers have the same direction of lay.

Unilay Strand
A conductor constructed with a central core surrounded by more than one layer of helically-laid wires, with all layers having a common length and direction of lay.