Title:
漏電検出装置
Document Type and Number:
Japanese Patent JP6369775
Kind Code:
B2
Abstract:
An electrical leakage detector (1) is provided with a zero phase current transformer (11) through which an AC system passes, a calculation unit (12) for calculating a calculated value using the output current from the zero phase current transformer (11), and an electrical leakage detection unit (14) for outputting an electrical leakage detection signal indicating that electrical leakage is occurring in the AC system to a circuit breaking mechanism on the basis of the calculated value of the calculation unit (12). The electrical leakage detection unit (14) determines that there is an electrical leakage state and outputs an electrical leakage detection signal to the circuit breaking mechanism if the calculated values for at least a prescribed fraction of a plurality of contiguous half-wave waveforms in the output current are above an electrical leakage level. As a result of this configuration, the electrical leakage detector (1) is capable of distinguishing electrical leakage phenomena from non-leakage phenomena such as the anti-inrush noise, and the like, output from inverters, and the like, and more accurately determining whether there is electrical leakage.
Inventors:
Eiji Iwami
Application Number:
JP2013073657A
Publication Date:
August 08, 2018
Filing Date:
March 29, 2013
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H01H83/02
Domestic Patent References:
| JP201048746A | ||||
| JP201115583A | ||||
| JP4109178A | ||||
| JP53107640A |
Attorney, Agent or Firm:
Yasuo Itaya