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Rapid tripping apparatus for current limiting of breaker

A technology of tripping device and circuit breaker, which is applied in the direction of protection switch operation/release mechanism, etc. It can solve the problems of tripping device failure, moving contact rod burning contacts, circuit breaker cannot effectively cut off the circuit that generates fault current, etc. Achieve the effects of good current limiting effect, reliable cut-off, and simple structure

Inactive Publication Date: 2007-08-08
LEGRAND LOW VOLTAGE ELECTRICAL APPLIANCES WUXI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] If the operating mechanism of the circuit breaker cannot act in time to cut off the circuit, the contacts will be burned due to the multiple bounces of the moving contact rod. Moreover, when the short-circuit current is too large, the release may fail unexpectedly, and the circuit breaker will not be able to operate. Effectively cut off the circuit that generates the fault current, causing undue economic loss

Method used

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  • Rapid tripping apparatus for current limiting of breaker
  • Rapid tripping apparatus for current limiting of breaker
  • Rapid tripping apparatus for current limiting of breaker

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Embodiment Construction

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] In the figure: 1. Side plate, 2. Upper link, 3. Jump button, 4. Lever, 5. Lock, 6. Release piece, 7. Right touch rod, 8. Quick action unit box, 9. Dynamic Feeling rod, 10. rotating shaft, 11. action block, 12. left feeling rod, 13. lower connecting rod, 14. firing transmission part, 15. slider, 16. limit spring, 17. pull rod, 18. positioning spring, 19. Displacement transmission part, 20. Toggle rod, 21. Arc groove, 22. Rotation shaft, 23. Cylinder, 24. Hook buckle, 25. Groove mouth, 26. Waist groove, 27. Protrusion, 28 . Long slot, 29. Central axis, 30. Conductive system unit box.

[0024] The current-limiting quick release device for the circuit breaker includes: a rotating shaft 10 installed in the conductive system unit box 30, a movable contact rod 9 that can rotate relative to the rotating shaft 10 is installed in the middle of the end face ...

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Abstract

The invention relates to one breaker to cut fault current circuit and to one remove device of one flow limit protection, wherein, the breaker limit flow rapid remove device comprises the following parts: rotation axis fixed on conductive system unit case; one cover remove structure composed of conductive system unit case top remove part and lock part; one slide block set in the conductive system unit case slide tank for upper and down.

Description

technical field [0001] The present invention relates to a circuit breaker for cutting off a circuit that generates a fault current. Specifically, it designs a quick release device for current limiting protection. sex and safety. In particular, the rapid release device for current limiting is adopted, which can limit the rise of the short-circuit current and reduce the damage to the circuit breaker. Background technique [0002] Usually, when a large short-circuit current occurs in the circuit, the circuit breaker with a short-circuit protection function release will cut off the faulty circuit, and the breaking time is longer, and the breaking energy of the contacts of the circuit breaker is relatively high, so the circuit breaker Contact damage is severe. In order to reduce the breaking energy of the contact system, some circuit breakers adopt some methods to limit the rise of fault current and speed up the breaking speed of the circuit breaker, such as increasing the cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
Inventor 王茂华张江易军段新高
Owner LEGRAND LOW VOLTAGE ELECTRICAL APPLIANCES WUXI
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