Power source miswiring detection apparatus

Details Power source miswiring detection apparatus Power source miswiring detection apparatus

1996-04-02

1998-10-27

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

340635, 324 66, 324 7677, 307127, 307129, 307138, 361 85, 361 23, G08B 2100

Patent

active

058283099

ABSTRACT:
A power source miswiring detection apparatus for detecting a miswiring of wires of a power source, including a pulse generator for generating a first pulse having a pulse width corresponding to a first phase difference between a first pair of two phases of a three-phase alternating power source, and a second pulse having a pulse width corresponding to a second phase difference between a second pair of two phases of the three-phase alternating power source which is different from the first pair of two phases, and a microcomputer for detecting a third phase difference between the first pulse and the second pulse to judge whether the third phase difference is in a predetermined range, and detecting the miswiring if the third phase difference is judged to be out of the predetermined range.

REFERENCES:
patent: Re33874 (1992-04-01), Miller
patent: 4119910 (1978-10-01), Hayashi
patent: 5184063 (1993-02-01), Eisenhauer

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