Results 291 to 300 of about 2,858,375 (353)

Fault detection and fault isolation in the ground station

MILCOM 97 MILCOM 97 Proceedings, 2002
The satellite ground station environment is one in which the availability of the equipment is normally paramount. Satellite contacts may be scheduled at any time and the data being down-linked may be irreplaceable if the equipment in the ground station is not available to receive it.
D.C. Elmore, T.R. Hurd
openaire   +1 more source

Performance testing low voltage ground fault protection

2001 IEEE Industrial and Commercial Power Systems Technical Conference. Conference Record (Cat. No.01CH37226), 2002
The National Electrical Code (NEC) requires ground-fault protection of equipment by devices intended to detect and interrupt low-current arcing phase-to-ground faults on many solidly grounded low-voltage systems having current ratings of 1000 A or greater.
openaire   +1 more source

Analysis of Simultaneous Line-to-Ground Faults

Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1957
A CERTAIN PERCENTAGE of the faults on power systems occur simultaneously at different points in the circuits. Such faults may result from a ground at one location on a circuit which raises the voltage on a healthy phase so that a flashover occurs at a second location.
openaire   +1 more source

Ground-Fault Interrupters

Transactions of the ASAE, 1974
null L. H. Soderholm, null L. F. Charity, null G. R. Olson   +2 more
openaire   +1 more source

Elegant ground-fault solutions for impossible problems

IEEE Transactions on Industry Applications, 2001
Low-voltage power distribution systems are typically grounded by one of two generally accepted methods, high-resistance grounded systems (a derivative of the ungrounded system) and solidly grounded systems. High-resistance grounded systems have gained in popularity due to the fact that the first line-to-ground fault does not cause a disruption of ...
openaire   +1 more source

Double Ground Fault Resistance

2023 Seminar on Fields, Waves, Photonics and Electro-optics: Theory and Practical Applications (FWPE), 2023
openaire   +1 more source

MV ground fault analysis and global grounding systems

2004
In 1999 the Italian Standard CEI 11-1, based on the CENELEC HD 637 S1 Standard, introduced, with reference to MV distribution systems, the notion of "global grounding systems", i.e. large interconnected grounding systems, able to keep touch voltages below safety limits, through lowering the equivalent grounding resistance and making the ground surface ...
TOMMASINI, Riccardo, PONS, ENRICO, TOJA S.   +2 more
openaire   +1 more source

Ground-fault protection of unit-connected generators

Electrical Engineering, 1958
THE INCREASING SIZE of turbine-generators on large power supply systems means that a sudden loss of a unit tends to endanger the continuity of power supply over large areas. Because of this, some operating companies prefer to sound an alarm upon the detection of generator ground faults which in themselves do not cause immediate disability of the ...
openaire   +1 more source

A New Method of Ground Fault Protection

Transactions of the American Institute of Electrical Engineers, 1934
A new high-resistance ``thyrite'' and a new 3-element cold-cathode tube having unusual characteristics constitute the basic elements in a new high voltage relay combination for relaying or detecting ground faults on ungrounded systems. This scheme of protection, as described herein, is characterized by its reliability, simplicity, sensitivity, and low ...
openaire   +1 more source

Extensional tectonics and two-stage crustal accretion at oceanic transform faults

Nature, 2021
Ingo Grevemeyer, Jason Phipps Morgan, C W Devey   +2 more
exaly