This paper presents the skin effect impact on active power losses in sheathless single-core cables/wires supplying nonlinear loads. There are significant conductor when current has a distorted waveform (e.g., diode rectifiers). The authors present new method for loss calculation. obtained results have been compared to IEC-60287-1-1:2006 + A1:2014 standard and based Bessel function. For all meth...

It is proposed to install an underwater observing system off the coast of Seattle, Washington and Vancouver, British Columbia in order to allow long-term scientific study of the ocean. The area to be covered corresponds to the Juan de Fuca tectonic plate. Electric power will be provided via a cable similar to a submarine telecommunications cable, and communications will be via fiber optics in t...

Aging mechanisms of two polymeric insulation materials that are used widely in nuclear power plant low-voltage cables; cross-linked polyethylene (XLPE) and ethylene propylene rubber/ethylene propylene diene terpolymer (EPR/EPDM), are reviewed. A summary of various nondestructive methods suitable for evaluation of cable insulation is given. A capacitive sensor capable of making local nondestruct...

This study presents an alternative methodological approach for thermal rating of power cables installed in vertical risers covered by unvented circular protective guards. An analogue thermal-electrical circuit is proposed for the thermal analysis of cables inside vertical risers. The proposed equivalent analogue model is verified by means of indoor experiments and finite-element simulations wit...

Steady-state potential and current distributions resulting from internal injection of current in the squid giant axon have been measured experimentally and also computed from nonlinear membrane cable equation models by numerical methods, using the Hodgkin-Huxley equations to give the membrane current density. The solutions obtained by this method satisfactorily reproduce experimental measuremen...

Isolated power supply for telecom/datacom applications 3 IC equalizes gigabit copper-cable links 12 DESIGN IDEAS DAC/µP supervisor combination improves analog I/O reliability 15 Industrial AC-switch debouncer isolates input and output 17 Multiplexer enables pseudo-multidrop RS-232 transmission 19 Solid-state circuit converts temperature to voltage 20 Measuring threshold voltages 21 Notch filter...

Two main causes of such induced voltages in the shield are: time-varying magnetic flux and potential difference at the cable connections with the earthing system. It has been shown in that both components of the voltage along shield, due to ground potential difference and field coupling, are significant and moreover that they cancel each other. As a consequence, it is possible to optimize the d...

Modem process control systems often employ accurate position or speed controlled PWM motors, which require feedback data for the drive control loop. Current methods require an independently shielded cable for feedback data transmission. This is due to the fact that high-voltage PWM signals could easily interfere with the feedback signals, which are typically one or more orders of magnitude smal...