Circuit interrupter providing protection and waveform capture fo

Details Circuit interrupter providing protection and waveform capture fo Circuit interrupter providing protection and waveform capture fo

1994-12-22

1997-02-04

Young, Brian K.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

341123, 364487, H02H 300

Patent

active

056005270

ABSTRACT:
A circuit breaker with a digital trip unit has a protection mode and a waveform capture mode of operation. In the protection mode, an equivalent sampling technique based upon pairs of samples spaced 90 electrical degrees apart with a pattern of delays between pairs is used to digitize the waveforms in the protected electrical system. Synchronous sampling is used in the waveform capture mode. The value of each sample is monitored in the waveform capture mode and a transfer is made back to the protection mode if a threshold value indicating an overcurrent condition is exceeded. The percentage total harmonic distortion, and per harmonic distortion for harmonics, up to and including the 27th are sequentially presented on a display on the front panel of the circuit breaker and can be transmitted along with the raw waveform data to a remote processor.

REFERENCES:
patent: 4291299 (1981-09-01), Hinz et al.
patent: 4672555 (1987-06-01), Hart et al.
patent: 4709339 (1987-11-01), Fernandes
patent: 5060166 (1991-10-01), Engel
patent: 5224054 (1993-06-01), Wallis
patent: 5233538 (1993-08-01), Wallis

Affiliated with

Also associated with

Rating

Circuit interrupter providing protection and waveform capture fo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit interrupter providing protection and waveform capture fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit interrupter providing protection and waveform capture fo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-685196