Evaluation of motor power cables for PWM AC drives

1997 ◽  
Vol 33 (2) ◽  
pp. 342-358 ◽  
Author(s):  
J.M. Bentley ◽  
P.J. Link
Keyword(s):  
Power Cables ◽  
Motor Power ◽  
Ac Drives

scholarly journals Online and Offline Diagnosis of Motor Power Cables Based on 1D CNN and Periodic Burst Signal Injection

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5936
Author(s):  
Heonkook Kim ◽  
Hyeyun Jeong ◽  
Hojin Lee ◽  
Sang Woo Kim
Keyword(s):  
Domain Knowledge ◽  
Capacitive Coupling ◽  
Power Cables ◽  
Motor Power ◽  
Wiring Harness ◽  
Periodic Burst ◽  
Soft Fault ◽  
Soft Faults ◽  
High Level ◽  
Automated Lines

We introduce a new approach for online and offline soft fault diagnosis in motor power cables, utilizing periodic burst injection and nonintrusive capacitive coupling. We focus on diagnosing soft faults because local cable modifications or soft faults that occur without any indication while the cable is still operational can eventually develop into hard faults; furthermore, advance diagnosis of soft faults is more beneficial than the later diagnosis of hard faults, with respect to preventing catastrophic production stoppages. Both online and offline diagnoses with on-site diagnostic ability are needed because the equipment in the automated lines operates for 24 h per day, except during scheduled maintenance. A 1D CNN model was utilized to learn high-level features. The advantages of the proposed method are that (1) it is suitable for wiring harness cables in automated factories, where the installed cables are extremely short; (2) it can be simply and identically applied for both online and offline diagnoses and to a variety of cable types; and (3) the diagnosis model can be directly established from the raw signal, without manual feature extraction and prior domain knowledge. Experiments conducted with various fault scenarios demonstrate that this method can be applied to practical cable faults.

WIELAND-K32

Alloy Digest ◽  
2005 ◽  
Vol 54 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Electrical Engineering ◽  
Heat Treating ◽  
Power Cables ◽  
Bend Strength ◽  
Thermal Conductivities

Abstract Wieland-K32 is a nondeoxidized copper with acceptable electrical and thermal conductivities. It is often called electrolytic tough pitch copper. Typical applications include wrapping strip for power cables and for coaxial telephone cables in electrical engineering. This datasheet provides information on composition, physical properties, elasticity, and bend strength. It also includes information on corrosion resistance as well as heat treating and joining. Filing Code: CU-728. Producer or source: Wieland Metals Inc.

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