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Heavy current rapid on-off apparatus

A high-current, fast technology, applied in the direction of electric switches, circuits, electrical components, etc., can solve the problems of long disconnection fault time, large circuit breaker volume, low sampling accuracy, etc., and achieve large breaking current and reliable breaking Improved performance and fast breaking speed

Inactive Publication Date: 2008-07-30
HEFEI NANNAN POWER EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing problems of large volume, long disconnection fault time, high cost, low sampling accuracy, poor reliability and high maintenance cost of the existing circuit breaker, the present invention provides a high-current rapid breaking device, which can break quickly Reliable, low cost and easy to maintain

Method used

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Embodiment Construction

[0018] Referring to Figures 1 and 2, the present invention consists of an explosion control system and an explosion disconnecting device, both of which are connected in parallel to the M of the trunk line. 1 , M 2 On the two connection ends (in use state); the explosion control system is composed of a controller 2 and a voltage transformer 1 and a current transformer 3 connected in series at its two ends, and the explosion breaking device 4 is composed of explosives 4-9 and detonating device 4- 2 metal bus bars 4-8 and shunts 4-7. The detonating device 4-2 is connected with the controller 2. Described controller 2 is a high-speed single-chip microcomputer controller, and can adopt 40MHZ single-chip computer etc. The explosion breaking device 4 has an insulating shell 4-1, and the metal busbar 4-8 and the shunt 4-7 are installed in the shell cavity 4-4. Metal busbars 4-8 and shunts 4-7 are separated by insulating plates 4-6; both ends of metal busbars 4-8 and shunts 4-7 are ...

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Abstract

The invention relates to a great current fast on-off apparatus, which mainly solves the problems of large volume of present breaker, long time in breaking fault, high cost, low accuracy of sampling, low reliability and high cost on maintenance. The explosion control system and the explosion on-off device, both of which are connected in parallel to the two linking ends of the main lines M1, M2, form said invention; the explosion control system is formed controller, voltage transformer and current transformer wherein the transformers are in cascade connection to the two ends of the system; the explosion on-off device is formed by metal master which contains dynamite and igniter apparatus, and one diverter, while the igniter apparatus connects to the said high speed single chip microcomputer controller. Said invention has low producing cost which is 10% of foreign products, simple maintenance expense, while it improves the on-off speed 20 times and the reliability 80% to present technique, therefore the fault area can be controlled effectively.

Description

technical field [0001] The invention relates to a breaking protection device which can quickly and reliably cut off the faulty power supply, disconnect the protection equipment of the power grid and protect the power grid network when a short circuit occurs in parallel at the outlet of the generator and the power grid. Background technique [0002] When a short-circuit fault occurs at the outlet of the generator and the line equipment, due to the large short-circuit current (about 7-10 times the rated current of the generator), at this time, the source of the fault must be cut off, otherwise the generator set or other electrical equipment will be seriously damaged. For the grid-connection of generators and power plants in my country at present, when a local short-circuit fault occurs, it should be removed from the grid immediately, so as not to affect the operation of the entire power grid and expand the scope of the accident. The traditional method is basically to use large-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H39/00
Inventor 陈文根甘朝宏
Owner HEFEI NANNAN POWER EQUIP CO LTD
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