Electronic control system for overload relay or the like

Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific quantity comparison means

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

361 96, H02H 308

Patent

active

044464983

ABSTRACT:
A control is provided for an AC circuit protection system or the like which is capable of monitoring either single phase or polyphase current flow. The composite current is periodically sampled at a frequency f.sub.s which is not a harmonic frequency of circuit current. The current sample values are converted into digital form and processed, then stored in an accumulator stage. When an overcurrent condition occurs the accumulator stage overflows and trips a circuit interrupter.

REFERENCES:
patent: 4017766 (1977-04-01), Vercellotti et al.
patent: 4103317 (1978-07-01), Krich
patent: 4180842 (1979-12-01), Keeney
patent: 4219858 (1980-08-01), De Puy et al.
patent: 4219860 (1980-08-01), De Puy
patent: 4241410 (1980-12-01), De Puy
patent: 4275445 (1981-06-01), Elizaram
patent: 4291355 (1981-09-01), Dinger
patent: 4305108 (1981-12-01), Udren
patent: 4327391 (1982-04-01), Grzebielski
General Electric Lod-Trols II Solid State Motor Protection Instructions pp. 58-60 Aug. 79.
"Analog to Digital Conversion Techniques with COPS Family Microcontrollers" National Semiconductor Co. 2/80.

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

Electronic control system for overload relay or the like does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic control system for overload relay or the like, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic control system for overload relay or the like will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2035214

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