Title:
ENERGIZATION PREVENTIVE DEVICE IN AN EARTHQUAKE DISASTER AND DISTRIBUTION BOARD HAVING THIS DEVICE
Document Type and Number:
Japanese Patent JP3157717
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to keep power in a cable way until a power company stops the power even when an earthquake is sensed, and prevent a fire caused at the re-transmission after power stoppage.
SOLUTION: A energization preventive device includes an earthquake sensitive sensor 1, a memory means and a trip circuit 6. The memory means stores data on condition that the earthquake sensitive sensor 1 senses an earthquake and at the same time a power failure is detected by a power supply voltage detecting unit 3. When the power is fed again to the cable way, the trip circuit 6 generates a trip signal to a wiring breaker 7 to stop the power cable way. In this case, the memory means may store the data of the earthquake, and at the re-transmission of power the trip circuit 6 may be operated when an output is generated from a power supply voltage initiation detecting unit. The distribution board has a function for stopping the power immediately to a load that has a tendency of a fire, by connecting an instantaneous trip circuit 12 of the energization preventive device to a branch breaker with an external trip function.
Inventors:
Naoki Yonebayashi
Masao Miyamoto
Hirohisa Kato
Yusuke Kobayashi
Kato Mitsue
Masao Miyamoto
Hirohisa Kato
Yusuke Kobayashi
Kato Mitsue
Application Number:
JP15935196A
Publication Date:
April 16, 2001
Filing Date:
June 20, 1996
Export Citation:
Assignee:
Nitto Kogyo Co., Ltd.
International Classes:
H02H5/00; (IPC1-7): H02H5/00
Domestic Patent References:
| JP9215178A | ||||
| JP9233623A | ||||
| JP9233682A |
Attorney, Agent or Firm:
Akio Najima (2 others)