Method and apparatus using a five-wire network for distribution of electrical power
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 11, 1998
Issued Date -
N/A
app pub date -
Oct 24, 1995
filing date -
Feb 7, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention features a method and an apparatus for distributing electrical power from a power source to a distribution transformer, using at least one hot-phase conductor, a neutral conductor and an independent ground conductor. The neutral conductor is connected to the ground conductor at only one point in the distribution system, preferably at or near the power source. Normal imbalance current flows only in the neutral conductor. Return current flow in the earth is eliminated by the single point neutral-to-ground connection. Magnetic field (MF) generation in this power distribution system is thus reduced and stray voltage problems eliminated. In addition, high-impedance faults are easily detected because the only current ever flowing in the ground conductor is fault current. A method is also described for converting existing power distribution systems to the independent ground topology of the present invention.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 15 Citation Count
- H02H Class
- 50.80 % this patent is cited more than
- 27 Age