LOW PRESSURE DISTRIBUTION SYSTEM PROTECTIVE APPARATUS IN HIGH MAGNETIC FIELD ENVIRONMENT AND METHOD OF SELECTING PROTECTIVE DEVICE

Japanese Patent JP3859217

B

PROBLEM TO BE SOLVED: To provide a simple protective apparatus having a control protective device for controlling and protecting a wiring protective device of a low pressure distribution system which normally operates even in a high magnetic field environment or a load even if the protective device is not magnetically shielded.
SOLUTION: The low pressure distribution system protective apparatus in the high magnetic field environment of 160 gauses or more includes a high magnetic field application fuse 4, a high magnetic field application switch 5 and a high magnetic field application thermal relay 6 provided on a distribution line. The high magnetic field application fuse 4 stretches elements which have a silver ribbon or a single metal in an insulating cylinder and is constituted by fully filling the circumstances with an extinguishing sand. The high magnetic field application switch 5 is made a solid-state contactor. The high magnetic field application thermal relay 6 is taken as a configuration which makes moving parts other than a bimetal nonmagnetic substance.

Ookawa, Yoshinao
Murano, Yoshihiro
Morito, Yoshimi
Kashimura, Shinji
Okada, Kenichi
Okamura, Hiroki
Mihashi, Takao
Sasaki, Takashi
Yamane, Minoru

JP2004000007774

September 29, 2006

January 15, 2004

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JAPAN ATOM ENERGY RES INST
KANDENKO CO LTD
MITSUBISHI ELECTRIC CORP

G21B1/11; H02H3/08; G21B1/00; G21B1/17; G21B1/21; H01H37/52; H01H61/00; H01H85/041; H01H85/06; H01H85/18; G21B1/11; H02H3/08; G21B1/00; H01H37/00; H01H61/00; H01H85/00; (IPC1-7): H02H3/08; G21B1/00; H01H37/52; H01H61/00; H01H85/041; H01H85/06; H01H85/18

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