Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1989-11-14
1991-05-28
Wong, Peter S.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
361 87, 361 99, 340664, H02H 600
Patent
active
050199560
ABSTRACT:
In this power control apparatus, a current flowing in a main current (201) is detected by a current transformer (202) and a zero-phase current transformer (203), provided in the main circuit. A value of this current is provided to a CPU (214) included in an intelligent controller (207). A maximum peak value and the like are evaluated by the CPU to be compared with predetermined set values. If those values are equal to or higher than the set values, an excitation signal is applied to a tripping device (205) to release a latch by a latch scheme (206) and thus to trip the circuit breaker. The CPU alters the set value when supplied with a setting alteration instruction from a central monitor (40), and causes the circuit breaker to be tripped when supplied with a stop instruction therefrom.
REFERENCES:
patent: 4710845 (1987-12-01), Demeyer
patent: 4780786 (1988-10-01), Weynachter et al.
patent: 4819124 (1989-04-01), Arinobu
Kamino Toshihide
Morii Toshimichi
Nakayama Katsutoyo
Morii Dengyo Kabushi Kaisha
Ohbayashi Corporation
Terasaki Denki Sangyo
Wong Peter S.
LandOfFree
Power control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power control apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-40008