Automatic reclosing controller of general low-voltage circuit breaker
A low-voltage circuit breaker and automatic reclosing technology, which is applied in the direction of automatic disconnection emergency protection devices, circuit devices, emergency protection circuit devices, etc., can solve problems such as inability to distinguish, increase workload, and output overload of low-voltage circuit breakers. , to achieve the effect of improving power supply reliability, reducing workload and high reliability
Active Publication Date: 2009-06-03
SHANGHAI JINGYI ELECTRICAL APPARATUS FACTORY CO LTD
View PDF0 Cites 11 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
After the loss of voltage trip, it is necessary to wait for personnel to close the switch, resulting in a long power outage and increasing the workload
[0003] At present, a few products with automatic reclosing function are only for specific switches, and the versatility is not strong
In particular, when the output of the low-voltage circuit breaker is overloaded or even short-circuited, it cannot be determined, and automatic reclosing may cause the fault to expand and cause serious consequences.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] The present invention will be further described below in conjunction with accompanying drawing.
[0036] Such as Figure 1~3 As shown, the general low-voltage circuit breaker automatic reclosing controller includes a signal input unit, a signal processing unit, a signal output unit, and a power supply unit; the signal input unit is connected to the low-voltage circuit breaker, and the signal processing unit is connected to the signal The input unit is connected with the signal output unit, and the power supply unit is connected with the signal input unit and the signal processing unit.
[0037] The signal input unit includes: a voltage change rate detection module; an opening and closing detection circuit including a photocoupler GU1, resistors R2, R3, and a light-emitting diode LED2; a photocoupler GU2, resistors R4, R5, and a diode D1 The power-on and power-off detection circuit of the output terminal; including the time setting circuit with exclusion RP, toggle swit...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an automatic reclosing controller of a general low-voltage circuit breaker, comprising a signal input unit, a signal processing unit, a signal output unit and a power supply unit. The signal input unit is connected with the low-voltage circuit breaker; the signal processing unit is connected with the signal input unit and the signal output unit; the power supply unit is connected with the signal input unit and the signal processing unit. Compared with the prior art, the automatic reclosing controller of the general low-voltage circuit breaker has advantages of strong generality, high reliability, economy and practicality. With the automatic reclosing controller arranged additionally, the automatic reclosing controller is restored during the power supply, therefore, the power supply reliability is improved and the workload is reduced.
Description
technical field [0001] The invention relates to circuit control, in particular to an automatic reclosing controller for a general low-voltage circuit breaker. Background technique [0002] In the power supply and distribution system, there are a large number of unattended low-voltage distribution cabinets. When the voltage is lost (undervoltage), the low-voltage circuit breaker trips. Some of the trips due to the loss of voltage are transient faults (such as lightning strikes), and some are caused by power failures on the upper-level power supply lines. After the loss of voltage trip, it is necessary to wait for personnel to close the switch, which causes a long power outage and increases the workload. [0003] At present, a small number of products with automatic reclosing function are only for specific switches, and their versatility is not strong. In particular, when the output of the low-voltage circuit breaker is overloaded or even short-circuited, it cannot be determi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/06
Inventor 胡正业
Owner SHANGHAI JINGYI ELECTRICAL APPARATUS FACTORY CO LTD