Title:
POWER SWITCHING SYSTEM
Document Type and Number:
Japanese Patent JP2020198766
Kind Code:
A
Abstract:
To provide a power switching system that can cut off a load from a power supply even when an earthquake occurs while a commercial power supply is cut off and the load is operating on a distributed power supply.SOLUTION: A power switching system includes a switching switch 21 that switches between a commercial power supply 4 and a power storage battery 3 to supply the power of one of the commercial power supply 4 and the power storage battery 3 to a specific load, a seismic sensor 23, and a control unit 24 that shuts off the power of the load, and the switching switch 21 is connected to the secondary side of a main breaker 11 to which the commercial power supply 4 is connected to the primary side, and a specific load is connected to the output side of the switching switch 21 via an earth leakage breaker 22. The seismic sensor 23 and the control unit 24 receive power from both the commercial power source 4 and the power storage battery 3, and when an earthquake is detected, both the main breaker 11 and the earth leakage breaker 22 are shut off.SELECTED DRAWING: Figure 1
Inventors:
KATO MASAYUKI
Application Number:
JP2019105565A
Publication Date:
December 10, 2020
Filing Date:
June 05, 2019
Export Citation:
Assignee:
KAWAMURA ELECTRIC INC
International Classes:
H02H5/00; H01H9/54; H01H83/02; H02B1/40; H02J3/38; H02J9/04
Attorney, Agent or Firm:
Yoshiki Ishida