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1. WO2000041202 - CURRENT LIMITER AND CIRCUIT BREAKER WITH CURRENT-LIMITING FUNCTION

Publication Number WO/2000/041202
Publication Date 13.07.2000
International Application No. PCT/JP1999/007303
International Filing Date 24.12.1999
IPC
H01H 9/30 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
9Details of switching devices, not covered by groups H01H1/-H01H7/104
30Means for extinguishing or preventing arc between current-carrying parts
H01H 9/34 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
9Details of switching devices, not covered by groups H01H1/-H01H7/104
30Means for extinguishing or preventing arc between current-carrying parts
34Stationary parts for restricting or subdividing the arc, e.g. barrier plate
H01H 9/44 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
9Details of switching devices, not covered by groups H01H1/-H01H7/104
30Means for extinguishing or preventing arc between current-carrying parts
44using blow-out magnet
H01H 9/46 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
9Details of switching devices, not covered by groups H01H1/-H01H7/104
30Means for extinguishing or preventing arc between current-carrying parts
46using arcing horns
H01H 33/98 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
33High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
70Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
98the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
H01H 71/02 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
71Details of the protective switches or relays covered by groups H01H73/-H01H83/115
02Housings; Casings; Bases; Mountings
CPC
H01H 2077/025
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
77Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
02in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
025with pneumatic means, e.g. by arc pressure
H01H 33/98
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
33High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
70Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
98the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
H01H 71/0257
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
71Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
02Housings; Casings; Bases; Mountings
025Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
0257Strength considerations
H01H 73/18
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
73Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
02Details
18Means for extinguishing or suppressing arc
H01H 77/06
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
77Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
02in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
06with electromagnetic opening
H01H 77/10
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
77Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
02in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
10with electrodynamic opening
Applicants
  • MITSUBISHI DENKI KABUSHIKI KAISHA [JP/JP]; 2-3, Marunouchi 2-chome Chiyoka-ku Tokyo 100-8310, JP (AllExceptUS)
  • MITSUHASHI, Takao [JP/JP]; JP (UsOnly)
  • TSUKIMA, Mitsuru [JP/JP]; JP (UsOnly)
  • TAKAHASHI, Mitsugu [JP/JP]; JP (UsOnly)
  • FUSHIMI, Masahiro [JP/JP]; JP (UsOnly)
  • FUKUYA, Kazunori [JP/JP]; JP (UsOnly)
  • MURATA, Shiro [JP/JP]; JP (UsOnly)
  • YAMAGATA, Shinji [JP/JP]; JP (UsOnly)
Inventors
  • MITSUHASHI, Takao; JP
  • TSUKIMA, Mitsuru; JP
  • TAKAHASHI, Mitsugu; JP
  • FUSHIMI, Masahiro; JP
  • FUKUYA, Kazunori; JP
  • MURATA, Shiro; JP
  • YAMAGATA, Shinji; JP
Agents
  • SOGA, Michiteru ; S. Soga & Co. 8th floor, Kokusai Building 1-1, Marunouchi 3-chome Chiyoda-ku Tokyo 100-0005, JP
Priority Data
10/37246228.12.1998JP
11/1074519.01.1999JP
11/24006626.08.1999JP
11/6998616.03.1999JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CURRENT LIMITER AND CIRCUIT BREAKER WITH CURRENT-LIMITING FUNCTION
(FR) LIMITEUR DE COURANT ET DISJONCTEUR AVEC LIMITATION DE COURANT
Abstract
(EN)
A current limiter having an excellent current-limiting function and produced at low cost and a circuit breaker comprising the same and having a small impedance are provided so as to prevent the case from being damaged because of an unwanted increase of the pressure inside the case due to an arc. Contactors (1, 7) have respective contacts. When the contacts are in contact with each other, the ends on the contacts' side are in a cylindrical space in a cylindrical insulator (25); when the contacts are out of contact, one of the contacts is outside the cylindrical space. If an arc is produced, the pressure in acylindrical space (18) is abruptly increased to decrease the arc current, thus improving the current limiting performance.
(FR)
Cette invention concerne un limiteur de courant très efficace, au coût de fabrication réduit, intégré à un disjoncteur de faible impédance, l'ensemble protégeant le boîtier contre une augmentation accidentelle de la pression interne provoquée par un arc. Lorsque les contacts des contacteurs (1 7) se touchent, les extrémités latérales des contacts se trouvent dans l'espace cylindrique d'un isolant cylindrique (25); Lorsque les contacts ne se touchent pas, l'un des contacts se trouve hors de l'espace cylindrique. Si un arc se produit, la pression dans l'espace cylindrique (18) augmente brusquement, ce qui provoque une baisse du courant générateur d'arc et améliore la fonction limitatrice de courant.
Also published as
ININ/PCT/2000/443/CHE
Latest bibliographic data on file with the International Bureau