| 摘要 |
PROBLEM TO BE SOLVED: To supply an electric power at a proper fee, which prevents unnecessary trip due to an in-rush current, without increasing a rating current of a circuit breaker.SOLUTION: A power supply system comprises: a circuit breaking part that breaks a current flowing to a circuit which supplies an electric power to a transformer; a breaker that has control part breaking the circuit breaking part by an electronic type control; and an electric power charge calculation part that calculates an electric power royalty corresponding to a value of a rating current of the circuit breaking part. The control part includes: a first breaking control part that breaks the current when detecting the current exceeding a value obtained by multiplying the rating current of transformer by a first constant multiple after a first period after a power is inputted to the circuit; a second breaking control part that breaks the current based on a predetermined operation characteristic curve when detecting the current exceeding the rating current of the circuit breaking part obtained by multiplying by a second constant multiple smaller than the first constant multiple; and an initialization processing part that sets at least one of a first period time width or the first constant so as to be adjustable.SELECTED DRAWING: Figure 1 |
