Apparatus for checking electrical cable parameters and method of determining ultrasound speed in cable jacket and / or in electrical cable insulation

摘要

Device for checking the parameters of the electric cables is designed so that behind of the device (7) for construction of the electric cable (8) is placed ultrasound probe (12) measuring the thickness of the electrical cable casing (8) and / or before device (5) for further processing and modification of the electrical conductors (2) are placed ultrasonic probes (11) for measuring the thickness of insulation (4) of electric conductors (2). Outputs of ultrasound probe (12) measuring the thickness of the jacket (10) of the electrical cable (8) and / or the outputs of the ultrasonic probes (11) for measuring the thickness of insulation (4) of electric conductors (2) are connected to an ultrasonic meter (13) of the thickness of the jacket (10) of the electric cable (8) or the thickness of insulations (4) of the electrical conductors (2). The method for determining the velocity of the ultrasound propagation in the electrical cable jacket or in the insulation of the electric conductors by apparat is based on the fact that the velocity (v) is calculated from the known thickness (l) jacket of the cable (8) or the insulation (4) of the electrical conductors (2), from the ultrasound propagation velocity (v ') set on the ultrasonic device (13) for measuring thickness and from the thickness (l') of jacket (10) of the electric cable casing (8) or insulation (4) of the electrical conductors (2) measured by the ultrasonic meter (13) of the thickness at a set velocity (v ') of the ultrasound propagation.