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IEEE Transactions on Industry Applications, 2001
With the advent of high-voltage (greater than 1 kV) utilization circuits on longwall mining equipment in the late 1980s, the Mine Safety and Health Administration (MSHA) initially required maximum ground-fault current limits of 3.75 A for 4160 V systems and 6.5 A for 2400 V systems.
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With the advent of high-voltage (greater than 1 kV) utilization circuits on longwall mining equipment in the late 1980s, the Mine Safety and Health Administration (MSHA) initially required maximum ground-fault current limits of 3.75 A for 4160 V systems and 6.5 A for 2400 V systems.
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High-Resistance Grounding in the Cement Industry-A User's Experience
IEEE Transactions on Industry Applications, 1986The use of properly applied high-resistance grounding, with a method of tracing and locating the first fault, offers many advantages to the electrical power system including suppression of transient overvoltages, continued operation on the first ground fault, fast tracing of the first ground fault, and minimizing flash hazard. These benefits along with
John W. Foster +2 more
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Best Practices for Implementing High-Resistance Grounding in Mine Power Systems
2007 IEEE Industry Applications Annual Meeting, 2007Proper implementation of high-resistance grounding of mine power systems can reduce arc flash and shock hazards by limiting ground fault current while also permitting reliable detection and clearing of the fault. IEEE Standard 142 defines a high resistance grounded system as one with a purposely inserted resistance that limits ground-fault current to ...
Joseph Sottile +2 more
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Resistance to adipocyte hyperplasia in ground squirrels given high-fat diets
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 1987Mammalian hibernators prepare for the winter by depositing fat in existing fat cells. There is little, if any, production of new fat cells. This is curious because equivalent fat deposition in rats is associated with substantial fat cell production.
I M, Faust, N, Mrosovsky
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2006 China International Conference on Electricity Distribution (CICED 2006), 2006
This paper introduces the successful application of electrolytic pole in the inclined shafts to reduce the grounding resistance of the original ground grid in order to meet the designed requirements in the reconstruction of an existing substation in high soil resistivity area via the electrolyte generated from the electrolytic pole.
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This paper introduces the successful application of electrolytic pole in the inclined shafts to reduce the grounding resistance of the original ground grid in order to meet the designed requirements in the reconstruction of an existing substation in high soil resistivity area via the electrolyte generated from the electrolytic pole.
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Realization of a simple high-value grounded linear resistance in CMOS technology
Proceedings of the 31st European Solid-State Circuits Conference, 2005. ESSCIRC 2005., 2005A resistor circuit suitable for realizing high-values of resistance (>10M/spl Omega/), linear over signal amplitudes of /spl plusmn/100mV is demonstrated. The resistor is variable over a range of /spl plusmn/10%. The design is relatively simple and can be used to AC couple low-frequency analogue signal processing blocks, for example in biomedical ...
Peter J. Langlois +2 more
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TENCON 2010 - 2010 IEEE Region 10 Conference, 2010
Power system is generally protected from lightning strokes by surge arresters which are provided with a low earth resistance connection to enable the large currents encountered to be effectively discharged to the general mass of earth. This offers some resistance to the flow of current which depends on electrode arrangements as well as the surrounding ...
Y Khan +4 more
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Power system is generally protected from lightning strokes by surge arresters which are provided with a low earth resistance connection to enable the large currents encountered to be effectively discharged to the general mass of earth. This offers some resistance to the flow of current which depends on electrode arrangements as well as the surrounding ...
Y Khan +4 more
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The design of 110kV substation grounding grid with high resistivity soil
2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP), 2017This paper presents the design of 110kV substation grounding grid with high resistivity soil. A horizontal two layer soil model is built by means of the MALT program of the Software (CDEGS). The purpose of this paper is to minimize the touch and step voltages when the resistivity soil is high, in urban substation during a direct lightning stroke.
Mohammed Abdaldaim, Ping Wang, Lin Li
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Improved Electrical Safety Through High Resistance Grounding
IEEE Transactions on Industry Applications, 2015High resistance grounding (HRG) is a well-proven technology for improving electric reliability for many industrial and utility facilities such as used in petrochemical, automotive, and generating plants. Many such facilities require the increased reliability for production and operational reasons.
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Ground Fault Monitoring for Motor-Drive Systems with High Resistance Grounding
2023 IEEE International Electric Machines & Drives Conference (IEMDC), 2023Jiangang Hu +3 more
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