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Title:
電源等判定装置
Document Type and Number:
Japanese Patent JP3976465
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To exactly judge advisability of a three-phase current power source and advisability of wiring between the three-phase current power supply and electrical equipment. SOLUTION: This judging device is constituted by providing a pulse generator 13 to generate a first pulse A to indicate phase difference between two phases of three-phase current power from the three-phase current power source 11, a second pulse B to indicate phase difference between two other phases different from the above two phases respectively and a microcomputer 14 to be booted by exchanging and fetching the three-phase current power from the three-phase current power source and to judge the advisability of the three-phase current power source and the advisability of wiring between the three-phase current power source and an induction motor based on the first and second pulses and the microcomputer 14 is constituted so as to set time to exceed time from boot to stabilization of the three-phase current power source as the maximum judging time and to enable execution of above judgment within the maximum judging time.

Inventors:
Masayuki Kumakura
▲土▼橋 光浩
Masanori Mori
Masao Yokoyama
Application Number:
JP2000042284A
Publication Date:
September 19, 2007
Filing Date:
February 21, 2000
Export Citation:
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Assignee:
Sanyo Electric Co., Ltd.
International Classes:
G01R31/02; G05F1/10; H02H3/34; H02H11/00
Domestic Patent References:
JP8289466A
JP2082171A
Attorney, Agent or Firm:
Masayuki Kushibuchi
Kushibuchi Kazue