CN2452126Y - Phase-defect protection circuit breaker - Google Patents
Phase-defect protection circuit breaker Download PDFInfo
- Publication number
- CN2452126Y CN2452126Y CN 00262289 CN00262289U CN2452126Y CN 2452126 Y CN2452126 Y CN 2452126Y CN 00262289 CN00262289 CN 00262289 CN 00262289 U CN00262289 U CN 00262289U CN 2452126 Y CN2452126 Y CN 2452126Y
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- CN
- China
- Prior art keywords
- phase
- circuit breaker
- utility
- protection circuit
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides a phase failure protecting circuit breaker which is composed of a movable contact, a static contact, an arc extinguishing device, an operating system and various releases. Phase failure releases are arranged outside overload releases, and the utility model has the capability of phase failure protection as well as the capability of overload protection. Therefore, circuits can be switched off during the overload or the phase failure of the circuits in order to ensure the safety of the circuits and electric equipment. The utility model has the advantages of compact structure, complete function and safe and reliable operation, is widely used for various distribution lines and is particularly suitable for the control circuits of motors.
Description
The utility model belongs to a kind of basic electrical equipment original paper, particularly a kind of open-phase protection circuit breaker, and it is to the improvement of existing circuit breaker and perfect.
Existing circuit breaker all has long delay heat and takes off moving magnetictrip of device and wink etc., and circuit overload is played practical protective effect.Therefore, in the Motor Control circuit, extensively adopt circuit breaker.But in use,, cause the phase failure unavoidable because of blown fuse of the power transformer phase failure or front or the like.Yet that has only dress no-voltage release coil opens circuit mutually, and circuit breaker just can be made a response, the broken string of other each phases, and existing circuit breaker all can not moved.So motor just moves under phase shortage, cause motor to burn thus.At the construction field (site), finding is arranged during this type of accident.
The purpose of this utility model is, overcomes the shortcoming that existing circuit breaker exists aspect open-phase protection, aims to provide a kind of open-phase protection circuit breaker with perfect open-phase protection ability, to avoid owing to phase-deficient operation meets with to the accident of motor breaking-up.
Technical solution of the present utility model is: a kind of open-phase protection circuit breaker; it moves magnetictrip by dynamic/static contact, arc control device, wink; compositions such as long delay thermal overload release and phase shortage release; it is characterized in that the phase shortage release includes coil, iron core, spring and module, module then is made of thyristor, diode and resistance.In the circuit at open-phase protection circuit breaker place; as long as arbitraryly break mutually; then the coil of phase shortage release promptly cuts off the power supply; its iron core is under spring action; promote the finger plate on the draw bar, make operating system thread off and reset, moving contact separates with fixed contact; load power source is cut off, and has guaranteed the safety of power consumption equipment.
Be further described below in conjunction with schematic diagram of the present utility model and present embodiment figure.
Accompanying drawing 1 is an electrical schematic diagram of the present utility model;
Accompanying drawing 2 is the complete section Visual figure of present embodiment.
Present embodiment moves magnetictrip (10), long delay thermal overload release (7), phase shortage release (17) and operating system etc. by moving contact (12), fixed contact (11), arc-control device (13), wink and forms.Phase shortage release (17) comprises coil (5), (3) unshakable in one's determination, spring (4) and module (8), and module (8) then includes thyristor (14), diode (16) and resistance (15).Operating system is made up of handle (1) and transmission mechanism (2).
Before combined floodgate, coil (5) is switched on, and spring (4) is in compressive state under the effect of (3) unshakable in one's determination.Behind the combined floodgate, moving contact (12) and fixed contact (11) closure, power consumption equipment normally moves.During when the equipment long term overloading or by transient high-current, then long delay thermal overload release (7) or wink are moved magnetictrip (10) successive relay trip, promote finger plate (6) rotation on the draw bar (9), make operating system thread off and reset, moving contact (12) separates with fixed contact (11), and circuit promptly is cut off.
Under normal operation, the coil of phase shortage release (5) is switched on all the time.But when emerged in operation is arbitrary when opening circuit mutually, coil (5) is outage immediately all, loses the iron core (3) of electromagnetic force, under the effect of spring (4), promotes finger plate (6) rotation on the draw bar (9), makes operating system thread off and reset.So moving contact (12) separates with fixed contact (11), circuit is promptly by disjunction, the accident of having avoided phase-deficient operation to bring.As shown in Figure 1, module (8) includes thyristor (14), diode (16) and resistance (15).When V broke mutually, thyristor (14) can not conducting because of the anode decompression, coil (5) outage; When U opens circuit mutually, because of the control utmost point bias voltage of thyristor (14) is zero, and can not conducting, also make coil (5) outage; Broken string as for the W phase causes coil (5) outage, and is apparent especially.
In addition, before combined floodgate, there is the phase failure in ifs circuit, and then feed motion can not be realized the normal connection of circuit, have only get rid of open phase fault after, closing a floodgate just to make circuit put into operation.Like this, can reach and remove a hidden danger (phase failure) before operation, this is an another advantage of the present utility model.
The utility model complete function, reliable operation and safety, and structure is very compact.With existing similar comparison, its function increases, and body does not strengthen.
Claims (3)
1, a kind of open-phase protection circuit breaker, it is made up of operating system, moving contact, fixed contact, arc-control device and various releases etc., it is characterized in that being provided with phase shortage release (17) side by side with overload release (7), (10).
2, open-phase protection circuit breaker according to claim 1 is characterized in that phase shortage release (17) is made up of unshakable in one's determination (3), spring (4), coil (5) and module (8).
3,, it is characterized in that module (8) includes thyristor (14), resistance (15) and diode (16) according to claim 1,2 described open-phase protection circuit breakers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00262289 CN2452126Y (en) | 2000-11-15 | 2000-11-15 | Phase-defect protection circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00262289 CN2452126Y (en) | 2000-11-15 | 2000-11-15 | Phase-defect protection circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2452126Y true CN2452126Y (en) | 2001-10-03 |
Family
ID=33617597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00262289 Expired - Fee Related CN2452126Y (en) | 2000-11-15 | 2000-11-15 | Phase-defect protection circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2452126Y (en) |
-
2000
- 2000-11-15 CN CN 00262289 patent/CN2452126Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |