Thermax | Glossary

Hard Drawn Copper Wire - Copper wire that has not been annealed after drawing.

Heat Seal - In cabling, a method of sealing a tape wrap jacket by means of thermal fusion.

Heat Shock - Test to determine stability of a material by sudden exposure to a high temperature for a short period of time.

Henry - Unit of inductance when the induced electromotive force of one volt is produced by the inducing current changing at the rate of one ampere per second.

Hertz (Hz) - A term replacing cycles-per second as the unit of measure for frequency.

High Strength Alloy Conductor - a conductor which shows a maximum 20% increase in resistance and a minimum of a 70% increase in breaking strength over the equivalent construction in pure copper while exhibiting a minimum elongation of 5% in 10 inches.

High Voltage - Generally considered to be a wire or cable with an operating voltage of 600 volts.

Hi-Pot - A test designed to determine the highest potential that can be applied to a conductor without breaking through the insulation.

Hot Tin Dip - A process of passing bare wire through a bath of molten tin to provide a coating.

Impedance - The total opposition that a circuit offers to the flow of alternating current or any other varying current at a particular frequency. It is a combination of resistance R and reactance X, measured in ohms and designated by Z.

Impulse Strength - The voltage breakdown of insulation under voltage surges on the order of microseconds in duration.

Inductance - The property of a circuit or circuit element that opposes a change in current flow. Inductance thus causes current changes to lag behind voltage changes. Inductance is measured in henrys.

Inorganic - Designating-or composed of-matter other than animal or vegetable, such as earthy or mineral matter.

Insulation Resistance - The ratio of the applied voltage to the total current between two electrodes in contact with a specified insulator.

Interstice - A minute space between one thing and another, especially between things closely set or between the parts of a body.

Ionization Voltage (Corona Level) - The minimum value of falling r.m.s. voltage which sustains electrical discharge within the vacuous or gas-filled spaces in the cable construction or insulation.

Jute - A natural fiber of plant base formed into rope-like strands. Used in cables for filling the interstices to give a round cross-section.

KAPTON ® - DuPont Company registered trademark for polyimide film.

Kilovolt Ampere - 1000 volts X amperes.

Kilovolt - 1000 volts.

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