Apparatus for improved protection against lower magnitude faults

Electricity: electrical systems and devices – Safety and protection of systems and devices – Automatic reclosing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

361 72, H02H 324

Patent

active

049741128

ABSTRACT:
Apparatus for improving the performance of conventional electromagnetic reclosing relays under continuous lower magnitude ground or phase faults in electrical power distribution systems. An incomplete sequence relay is connected to the reclosing relay to render the timing drum or cam of the reclosing relay operative when the contacts of the circuit breaker are open, and to reset the reclosing relay after a selected time interval when the breaker is closed. This arrangement prevents timing problems associated with lower magnitude faults which otherwise keep the reclosing relay from reaching its lockout condition.

REFERENCES:
patent: 2861223 (1958-11-01), Seller et al.
Type RC Automatic Reclosing Relay Instructions Westinghouse Electric Corp. 12 pp. 4/54.
Reclosing Relay Type NLR11A Instructions, General Electric Co., 26 pp., 2/69.
Agastat 7000 Series Timing Relay Data Sheets, Amerace Corp., Union, N.J. 2 pp. 4/85.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Apparatus for improved protection against lower magnitude faults does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for improved protection against lower magnitude faults, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for improved protection against lower magnitude faults will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1036347

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.