TWI635527B - Improved interlocking device used in between circuit breakers - Google Patents

Abstract

The invention relates to an improved device for interlocking between a circuit breaker and a circuit breaker, which can use a mechanical interlocking function between two or more circuit breakers, and has an action contact controlled by an operation sequence, and can be electrically connected. The control of the main power supply of the circuit breaker can achieve the mechanical and electrical interlocking function in a safe and flawless state, and the device that prevents the electrical switch from malfunctioning, and improves the safety of the use of the electrical device.

Description

Interlocker interlocking method improvement device

The invention relates to an improved device for interlocking between circuit breakers, which improves the inconvenience in the practical application field of the current market, an action that is safe in safety (simple and convenient to install), and an improved interlocking mode between circuit breakers which can improve electrical safety performance. Device.

The demand for the market leads to the development of new products, and the functional requirements are improved from the inconvenience and urgent improvement requirements of the actual use of the customer. Based on the enthusiasm for improving industrial safety and the experience of on-site implementation, the applicant of the present invention has a series of inventions and creations on motor switch and power supply management. More than a dozen of these research and development results have been patented and approved. In particular, the applicant of the present invention has provided a series of practical motor switch locking devices, which can be used in combination with various brands and models of motor switches, and has achieved good results. The applicant of the present invention has such a series of inventions and creations on the safety of the motor switch. In view of the fact that many electrical accidents in the past and the past have occurred in the maintenance events of the motor machinery, the utility model mainly lacks a practical motor switch locking device. However, there has not been a locking device that is applicable to various states.

In many cases of the actual power system, there are many situations in which the two circuit breakers must be interlocked with each other, that is, the mechanical interlock of the two circuit breakers (MI), that is, only one of the two circuit breakers. Power on, not both at the same time, otherwise it will cause a short circuit accident. In the above-mentioned state, most of the cases use automatic switching switches (also known as common switches). ATS), but the automatic switch is usually two side by side on the same chassis, and the circuit breaker must be the same size. Under actual conditions, all the elastic applications have been lost, and the methods and methods of making them have to solve the long-term inconvenience. In addition to not limiting the specifications of the circuit breakers, it is necessary to be able to achieve electrical and mechanical interlocking functions. Safety and practical requirements, in addition to solving the above various conditions, closed ON, open OFF can be locked, and the interlocking function must be overcome, the above problems have existed for a long time, domestic and foreign industry has been unable to properly solve the problem problem.

In addition, when three circuit breakers must be interlocked, that is, three circuit breakers interlock the function of interlocking Tie, that is, the three circuit breakers only allow two simultaneous ONs at the same time. This problem is a long-standing problem, generally The problem cannot be solved, and the large power part is treated by ACB. However, when the distance is too large, the mechanicality cannot be interlocked. However, the actual demand of the market is that the circuit breaker part hopes to be mechanically interlocked, which can improve its absolute reliability. . And by the mechanical action of the state, it can be used for identification and increase the convenience and safety of use. For example, in Taiwan patent M318184 patent case, the inconvenience and shortcomings of the patent for the non-fuse switch locking device can only lock the position of the trip position, although it meets the requirements of the locking device that must be able to be powered off and locked during maintenance, but not A function that can be used for the aforementioned conditions of other different functional requirements and must be interlocked. It is necessary to improve the shortcomings of the Taiwan Patent No. 105134930 switch safety interlocking method patent, and to improve the interlocking function of the interlocking part, which may cause malfunctions, such as power failure and disconnection, etc., which may cause malfunction or malfunction. And the way the line-controlled interlocking method is limited for distance. In the world of traditional arts, the traditional locks are generally used in the world of interlocking. Different methods require different locks and components, and a variety of safety locks are derived, but the mechanical interlocking function is not actually achieved. Discrimination, this will result in an increase in production costs, and increase the burden of product management and the troubles of the owners. Also known in the world of technology, the interlocking devices in the world, in the professional system Manufacturers have created an interlocking lock product, commonly known as Kerkey, which is the key to interlocking in the lock. If there are two locks, only one key is placed on the two circuit breakers. The principle of application is that the key can be pulled up before being placed on another lock and controlled by the key. In the same way, when three locks are used, two keys are attached, so that the interlock function is achieved by the control of the key. Although it has versatility, simple structure, and easy installation, the potential fatal safety and downside is that when the standby key is used improperly to control the operation, it may cause malfunction and cause safety. These problems have existed for a long time, and domestic and foreign companies have been unable to properly solve these problems.

The general mechanical interlocking circuit breakers must be the same size. If they are different in size, they are not compatible and the specifications are limited. Similarly, ATS has the same problem. Because of the above problems, it cannot be changed and flexibility is limited. There are problems such as mechanical devices, locks, keys, etc., which are inconvenient to manage. KerKey is managed by a key, and there are also doubts about malfunctions. The above problems have not been perfect solutions.

The equipment of the mechanical interlock device between the circuit breakers can solve the problem of the power load distribution application in the power system, and the addition of the standby power supply or the problem of power management can improve the system power quality and safety stability. Generally, it is divided into the interlocking device (Machine Interlock) between the two circuit breakers and the circuit breaker, or the interlocking device Tie between the three circuit breakers. The function is to prevent the circuit breakers in the circuit to be controlled from being simultaneously input. , the danger that may be caused. Explain the following functional requirements in a simple case. For example, taking the power of a 3000KW transformer as an example, when only one 3000KW load is used, but the equipment has problems, the impact will be great. If three 1500KW are used. The transformer is usually supplied by the secondary circuit, and the other 1500KW can be used as support. Similarly, when the load supply capacity is more reasonable, the reliability of the power distribution system can be improved. In this way, the air circuit is used in the power distribution system. Application of ACB Many, for example, a 6400A ACB directly supplies the load, which can be used to distribute the load to two 3200A ACBs (or one ACB for support and three 3200A ACBs). The application of distributed load can improve the reliability and safety of the system. The same applies to the application principle of the low-voltage circuit breaker MCCB. It can be seen from the above that the interlocking relationship between the circuit breaker and the circuit breaker is generally used or the relationship that the three circuit breakers cannot be simultaneously input, such a wide range of applications, in general, the problem of power load distribution, in the conventional skill In general, MI, ATS or Kerkey are used to solve the problem.

In summary, MI (Machine Interlock) mechanical interlock device, basically the circuit breaker and the circuit breaker must be the same size, can be assembled, and the advantage is simple. It must be a switch of the same size to be a disadvantage, and the padlock is not easy to manage. ATS, its condition is the same, the circuit breaker must be the same size. Kerkey uses the key to control the action of the switch when the lock is in the state of the lock. The disadvantage is that it is imported and expensive, and when the spare key is placed in the lock, it may cause malfunction, which cannot be overcome by the prior art.

In many cases of the actual power system, when two circuit breakers interlock with each other, for example, when adding a set of backup power sources, the two circuit breakers must interlock Interlock, that is, only one of the two circuit breakers is energized, not two Powering up at the same time can cause a short circuit accident. In the above-mentioned state, most of the cases use an automatic changeover switch (also known as ATS). However, the automatic switch is generally two side by side on the same casing, and the circuit breaker must be of the same specification. In actual conditions, all the elastic applications are lost. If the prior art and method are applied, the inconvenience of the above-mentioned inconvenience cannot be solved. Especially in the size and distance of the specification. Another example is an application example of electric load distribution. A main circuit breaker performs load distribution function with three circuit breakers. When three circuit breakers must be interlocked, that is, three circuit breakers interlock the function of interlocking Tie. That is three Circuit breakers can only allow up to two simultaneous ONs. If the previous techniques and methods are applied, the long-standing problems cannot be solved, especially the problem of mechanical interlocking, and the limited distance, that is, mechanical and electrical failure. The interlocking aspect cannot be identified by the state's contact output function, which makes it more convenient and safe to use. In order to achieve the above object, the mechanical interlocking device for the switch safety lock must be made with a brake mechanism for making the internal lock lever of the switch safety lock act or not, and then combined with the lock safety lock body lock device. With the line control module transmission mechanism, the interlock function can be achieved, and the malfunction can be prevented, the mechanical interlock safety is higher, and the requirements of public safety regulations are met to prevent accidents. As described above, it can also be applied to the interlocking application between multiple circuit breakers to make a universally used interlocking device for the switch safety lock, which can be applied to most places, so that the switch and the switch The application of the interlocking device has the greatest economic benefit, and can be equipped with standard equipment, which can reduce the troubles in equipment maintenance in the future, and also solves the problem that when someone accidentally gets the spare key and operates with the spare key, it will not Mistakes are generated to avoid accidents that cause work safety incidents and meet safety requirements. However, in order to improve the previous limited problem of distance, and the site is already in the old distribution box, there is no space between the circuit breaker and the circuit breaker. This product can also be used to solve the problem, especially the long distance condition cannot be mechanical. The problem of interlocking must be overcome.

In summary, the mechanical interlock of the inter-circuit breaker interlocking device must be reliable and safe. To be able to use any specifications, you can interlock them at will. When the spare key is mishandled, it will not cause malfunction. And not limited by distance, it is best to have mechanical and electrical contacts. And meet the requirements of the permanent components in compliance with the specifications. If it can solve the problem that any specification can be used, the product can be standardized and standardized, and this problem has not been effectively solved in the power system. For the problems that the prior art cannot overcome, and the inconvenience in use, there is interlock between the circuit breakers of the present invention. Ways to improve the product requirements of the method.

The main object of the present invention is to provide an electrical switch for an interlock between a circuit breaker and a circuit breaker, which is a mechanical interlocking device, which is particularly free from distance restrictions and is not limited by the type and size of the switch. The device prevents malfunction or malfunction due to electrical failure. In particular, the main purpose of the present invention is to perform Mechanical interlock between two circuit breakers, Preventing three mechanical interlocks that close ON at the same time between the three circuit breakers, Interlocking between multiple circuit breakers A universal safety feature allows for the interlocking of mechanical and electrical interactions between circuit breakers. The invention provides a switch interlocking device with simple structure and convenient installation, which can comprehensively use the solutions of various functional requirements mentioned above, and adopts a reliable and reliable mechanical combination to prevent the occurrence of malfunction and improve the use of electrical equipment. Security on the ground.

In order to achieve the above object, the apparatus for improving the inter-circuit breaker interlocking method comprises: a switch locking device, wherein the switch locking device is disposed on a circuit breaker, and the switch locking device has a lock, and the lock pivots The internal linkage mechanism and the shift lever are interlocked; a switch key placement control box can realize the interlocking function and prevent the malfunction by the above-mentioned switch locking device and the action sequence control mechanism inside the switch key placement control box. The situation occurs, the reliability is increased by mechanical interlocking, and the requirements of public safety regulations are met to prevent accidents. And improved the patent of application No. 105134930, and the braking device and the auxiliary transmission device are removed by using a wire-control module as a medium to provide a distance transmission function, Solve the problem that there is no distance limitation due to the remote control module. In the electrical interlocking part, the function of interlocking control between the transmission mechanism and the braking mechanism can be realized to make a switch key placement control box, and the switch key is placed inside the control box and is provided with a switch key placement control box state connection. The electrical connection is made to the tripping mechanism of the circuit breaker to achieve a safe and secure locking function.

In order to achieve the mechanical locking function, the lock of the switch locking device can be locked in multiple positions. The lock must have special functions and can be changed in various combinations, for example, the key rotation has three positions or two. The position can be pulled out or unplugged at each position to meet the requirements of various state functions.

In order to meet the requirements of mechanical interlocking function and electrical interlocking function. According to the functional requirements of the interlock between the circuit breakers, an external brake mechanism is electrically connected to a circuit breaker position state contact, a switch key placement control box state contact, and the circuit breaker is tested according to the set operation sequence control function. The button controls the tripping mechanism of the circuit breaker to achieve a safe and secure latching function.

In order to achieve the mechanical interlocking function between the two circuit breakers, a switch locking device can be placed on a circuit breaker, and the operating position of the locking device is in the blocking position, and the gear lever position of the locking device is at the circuit breaker handle. In the middle of the path, the key can be pulled out of the lock and can be placed on the switch key to place the control box; the other circuit breaker has another switch lock device, and the lock is in the normal position. When the position of the shift lever of the lock is not in the middle of the path of the handle of the circuit breaker, the circuit breaker is not restricted to move, and the action of closing or turning OFF can be arbitrarily performed, and at this time, the key on the lock is fixed on the lock. The lock can not be pulled out, so that the mechanical interlock function that only one circuit breaker can be closed ON between the two circuit breakers can be achieved, and because the switch key placement control box is made to allow one or two The key can be placed in the open Turning off the function of the key on the control box, and allowing only one of the two types of circuit breakers to have a key on the lock device of the switch, so that the mechanical interlock does not malfunction. This achieves the interlock function.

In order to achieve the mechanical interlock function between the three circuit breakers to prevent three simultaneous ONs, a switch locking device can be placed on a circuit breaker. When the key on the lock is positioned in the locked position, the gear lever is at this time. The position is in the active path of the circuit breaker handle. At this time, the circuit breaker is restricted from moving, and the action of closing or turning OFF can not be performed arbitrarily, and at this time, the key can be pulled away from the lock and the key is placed in the The switch key is placed on the control box. At this time, because the key is placed on the switch key placement control box, the control mechanism can set the other two keys to freely move and withdraw the lock according to the set action sequence. The key can be placed on the lock of the switch locking device on the other two circuit breakers. At this time, the two circuit breakers are not restricted in activities, and can be arbitrarily closed or turned OFF, and at this time, the two locks The key is fixed on the lock and cannot be removed (the necessary condition for the key to be withdrawn is that the key position on the lock is in the locked position), so that three circuit breakers can be achieved, at most two Closing the circuit breaker can function simultaneously ON. The above three keys are different numbered keys.

In order to achieve the mechanical interlock function between the three circuit breakers to prevent three simultaneous ONs, a switch locking device can be placed on a circuit breaker. When the key on the lock is positioned in the locked position, the gear lever is at this time. The position is in the active path of the circuit breaker handle. At this time, the circuit breaker is restricted from moving, and the action of closing or turning OFF can not be performed arbitrarily, and at this time, the key can be pulled away from the lock and the key is placed in the The switch key is placed on the control box. At this time, because the key is placed on the switch key placement control box, the control mechanism can set the other two keys to freely move and withdraw the lock according to the set action sequence. The key can be placed in the other two On the lock of the switch locking device on the circuit breaker, the two circuit breakers are not restricted in activity at this time, and the action of closing ON or opening OFF can be arbitrarily performed, and at this time, the key on the two locks is fixed at the The lock must not be detached (the necessary condition for the key to be withdrawn is that the key is locked at the lock), so that up to only two of the three circuit breakers can be turned ON at the same time. The above three keys can be the same numbered key. Therefore, in the above state, since the three keys are the same, when a spare key is erroneously operated, a malfunction may occur, so that a switch key placement control box state that is activated by the internal setting operation sequence control mechanism is formed inside the switch key placement control box. The contact, the electrical connection breaker position state contact is electrically connected to the circuit breaker main circuit power supply, and controls the tripping mechanism device of the circuit breaker to achieve a safe and innocent locking function.

In order to achieve the interlock function between the two circuit breakers and the other circuit breaker, the two circuit breakers can be set to A and B respectively, and the other circuit breaker is set to C, and the switch locking device is first placed. On the circuit breaker, when the key of the lock is in the locked position, the position of the shift lever is in the active path of the handle of the circuit breaker, and the key can be pulled away from the lock (and when the lock is locked on the switch) When the key is in the normal position, the key is not detachable from the lock, and the key that has been detached from the lock is placed in the switch key placement control box, and the operation of the key operates in the set order. Whether the control can be pulled out or not pulled out, with A and B as a group, and C as a group, so that the two interlocks generally form a circuit breaker to the interlocking function between the two circuit breakers.

As in the above embodiment, the requirement of the interlocking safety lock of the present invention can be changed in addition to the mechanical mechanism inside the lock of the locking device of the switch, and the position of the key can be used to change. Interlocking application only between circuit breakers, and In addition, the switch key placement control box uses the key and the internal action sequence control mechanism to achieve the mechanical interlock function, and is supplemented by the circuit breaker position state contact of each circuit breaker, and is electrically connected to the circuit breaker according to the function requirement. The tripping mechanism acts to achieve mechanical and electrical interlocking functions.

As described above, in the interlocking application between a plurality of circuit breakers, it is possible to manufacture an interlocking device that is highly safe and universally usable between the circuit breakers, and can be applied to most places, application books. The invention relates to an improved device for interlocking between circuit breakers, which can obtain maximum economic benefit and become a standardization standard device, which can reduce the troubles in equipment maintenance in the future, and solves the problem when someone accidentally obtains a spare key and operates with the spare key. There will be no malfunctions, so as to avoid accidents and cause work safety incidents to meet the safety requirements. The various contact states described above can be transmitted in a wired or wireless manner to meet the requirements of monitoring management.

In order to solve the problem, the present invention not only has novelty and progress, but also considers market problems in the design process. In addition to the functionality of the solution, whether the market function is appropriate, whether it is a permanent component, whether the emergency can be destroyed, the switch can be operated and can comply with world regulations such as NEC, IEC, JIS, BS, CCC, CNS, etc. As mentioned above, the purpose and function of the solution and means can achieve the requirements of various current regulations, such as the four major principles of the US Electrical Code NEC for the locking device and the four characteristics of the product function. China's CCC requirements for power distribution equipment and switchgear 5C, JIS, BS, TUV, etc., can be applied to real-world market applications.

10‧‧‧Interlocking device improvement device

11‧‧‧Switch locking device

12‧‧‧1 switch locking device

13‧‧‧2 switch locking device

14‧‧‧3 switch locking device

15‧‧‧Switch key control box

16‧‧‧Locks

Locks of 17‧‧1

Locks of 18‧‧‧2

Locks of 19‧‧3

20‧‧‧ key

Key 21‧‧1

Key 22‧‧‧2

Key 23‧‧3

24‧‧ ‧bar

25‧‧‧Normal position

26‧‧‧Lock position

27‧‧‧Circuit breaker

Circuit breaker 28‧‧‧1

Circuit breaker 29‧‧‧2

Circuit breaker 30‧‧‧3

31‧‧‧Hands

32‧‧‧Switch key placement control box status contact

33‧‧‧Circuit Position Status Contact

34‧‧‧External brake mechanism

35‧‧‧ breaker test button

36‧‧‧Circuit breaker insufficient voltage tripping coil

Fig. 1 is a schematic view showing the appearance of an inter-circuit breaker interlocking device for an inter-circuit breaker interlocking device of the present invention.

Fig. 2 is a schematic view showing an embodiment of an interlocking device between two circuit breakers of the improved inter-circuit breaker interlocking device of the present invention.

FIG. 3 is a schematic view showing an embodiment of interlocking devices between three circuit breakers in the device for improving the inter-circuit breaker interlocking method of the present invention.

Fig. 4 is a view showing another embodiment of the interlocking device between the three circuit breakers of the improved inter-circuit breaker interlocking device of the present invention.

Fig. 5 is a view showing an embodiment of an inter-circuit breaker interlocking device for an inter-circuit breaker interlocking device of the present invention.

Fig. 6 is a schematic view showing the drawing of a single line diagram of the system for improving the interlocking mode between the circuit breakers of the present invention.

According to the preferred embodiment of the apparatus for inter-circuit breaker interlocking device 10 of the present invention, as shown in FIG. 1, there is a circuit breaker 27 having a switch locking device 11 on the switch 27 Above the lock device 11, there is a lock 16 which can be in the normal position 25 or the lock position 26 according to the action requirement. The lock 16 has a key 20 on the lock 16 or placed in the switch key placement control box. In 15 , the lock 16 and the switch key are placed on the control box 15 to act as required to achieve the functional requirements of the interlock.

According to the preferred embodiment of the apparatus for inter-circuit breaker interlocking device 10 of the present invention, as shown in FIG. 2, there are two circuit breakers, No. 1 circuit breaker 28, and No. 2 circuit breaker 29, which 1 There is a No. 1 switch locking device 12 above the circuit breaker 28, and a No. 2 switch locking device 13 above the No. 2 circuit breaker, as shown in the figure No. 1 circuit breaker 28, the No. 1 switch locking device 12 Positioned in the blocking position 26, the shift lever 24 of the No. 1 lock 17 is located in the middle of the movable path of the handle 31 of the No. 1 circuit breaker 28, and the No. 1 key 21 of the No. 1 lock 17 is placed on the switch key placement control box 15; Break on the 2nd The switch 29 has a No. 2 switch locking device 13 in the normal position 25. The No. 2 circuit breaker 29 can normally be turned ON and turned OFF. The No. 2 key 22 on the No. 2 lock 18 is in the No. 2 lock. 18, if the number 2 key 22 is to be pulled away from the 2nd lock 18, it must be positioned in the locked position 26, and the necessary condition for the key 1 to be withdrawn from the switch key placement control box 15 is the key No. 2 22 is also placed on the switch key placement control box 15, such that the No. 1 circuit breaker 28 and the No. 2 circuit breaker 29 above the No. 1 locking device 12 on the No. 1 lock 17 and the No. 2 locking device 13 The locks 18 are all in the locked position 26, and the two keys 21 and the two keys 22 are both on the switch key placement control box 15, wherein the first key 21 and the second key 22 can only have one The switch key can be pulled out of the control box 15. This allows for the function of two Mechanical Interlock MIs.

According to the preferred embodiment of the apparatus for inter-circuit breaker interlocking device 10 of the present invention, as shown in FIG. 3, there are three circuit breakers No. 28, No. 2, No. 29, and No. 3, three circuit breakers 30. The circuit breaker, the No. 1 circuit breaker 28 has a No. 1 switch locking device 12, the No. 2 circuit breaker 29 has a No. 2 switch locking device 13, and the No. 3 circuit breaker 30 has a No. 3 switch locking device 14 The position of the third lock 19 of the No. 3 switch locking device 14 above the No. 3 circuit breaker 30 is in the latching position 26, and the shift lever 24 is located at the movable path of the handle 31 of the No. 3 breaker 30. In the middle, the No. 3 key 23 of the No. 3 lock 19 is placed on the switch key placement control box 15; the No. 1 circuit breaker 28 has a No. 1 switch locking device 12 and a No. 2 circuit breaker 29 with a No. 2 switch. The lock device 13, the lock No. 1 and the lock 18 are all in the normal position 25. At this time, the No. 1 breaker 28 and the No. 2 breaker 29 can be normally turned ON and turned OFF. The No. 1 key 21 above the No. 1 lock 17 and the No. 2 key 22 above the No. 2 lock 18 are all unable to be detached from the lock. At this time, the No. 1 key 21 is to be pulled away from the No. 1 lock 17 or No. 2 key 22 To remove the No. 2 lock 18, the No. 1 switch locking device 12 or the No. 2 switch locking device 13 must be in the blocking position 26; when the No. 1 key 21, No. 2 key 22, No. 3 key 23 has at least one key It is placed on the switch key placement control box 15, in which one or two keys can be removed, so that the function of the mechanical interlock TIE between the three circuit breakers can be achieved.

According to the preferred embodiment of the apparatus for inter-circuit breaker interlocking device 10 of the present invention, as shown in FIG. 4, there are three circuit breakers No. 28, No. 2, No. 29, and No. 3, three circuit breakers 30. The circuit breaker has a switch locking device 11 on the circuit breaker 28, and a switch locking device 11 on the circuit breaker 29, and a switch locking device 11 on the circuit breaker 30, as shown in the figure. The switch locking device 11 above the No. 3 circuit breaker 30 has the lock 16 in the locked position 26, and the gear lever 24 is located in the middle of the movable path of the handle 31 of the No. 3 circuit breaker 30, and the key 20 of the lock 16 is placed. The switch key is placed on the control box 15; the other circuit breaker 28 and the second circuit breaker 29 also have switch locking devices 11 respectively, and the locks 16 are all in the normal position 25, at which time the circuit breaker 28 is Both of the circuit breakers 29 can be normally turned ON and turned OFF. The key 20 above the lock 16 cannot be removed from the lock. At this time, the key 20 is to be pulled away from the lock 16, and the switch must be on the switch. The locking device 11 is located in the locking position 26; when at least one key 20 of the three keys 20 is placed in the switch key placement control 15, of which there are one or two key 20 can be pulled out, so we can achieve between three breaker mechanical interlock TIE function. In the above embodiment, the keys of the interlocking device 3 are all the same number, and the functional characteristics of the three interlocks can be achieved.

According to the preferred embodiment of the apparatus for inter-circuit breaker interlocking device 10 of the present invention, as shown in FIG. 5, in addition to the combination of the above-mentioned circuit breaker 27 switch locking device 11 and the switch key placement control box 15, The mechanical interlocking function; the control box state contact 32 is placed according to the switch key, the circuit breaker position state contact 33 of the circuit breaker 27 is electrically connected, and then electrically connected to the external brake mechanism 34, and is actuated by the external brake mechanism 34. Whether the circuit breaker test button 35 is actuated or not operated; or is electrically connected to the circuit breaker insufficient voltage tripping coil 36 tripping device to achieve the dual protection function of mechanical and electrical interlocking.

According to the present invention, the inter-circuit breaker interlocking device 10 is shown in Fig. 6 as a schematic diagram of the inter-circuit breaker interlocking device in the system line diagram.

In summary, the improved interlocking device between the circuit breakers of the present invention can solve various kinds of The application of special requirements, and the mechanical interlocking mechanism to solve the accident that may occur due to the electrical interlocking function, the invention is particularly suitable for the application of the interlocking function between switches without distance limitation, and is deeply utilized by the industry. Sex. In the relevant products and approved patent announcements on the market, the same technical features as the essence of the present invention are not found, and the statutory patent application requirements of novelty and progress are also met.提出 Submit a patent application in accordance with the law, and ask your review board to give the patent as soon as possible to ensure the rights and interests of the applicant. However, the present invention is not limited to the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any equivalent changes or modifications made in accordance with the spirit of the present invention are still covered by the scope of the present invention. In the right.

Claims (2)

An improved interlocking device between circuit breakers includes: a switch locking device, the switch locking device is disposed on a circuit breaker, the switch locking device and the circuit breaker are one or plural, and the switch is locked The gear lever of the lock on the device can be positioned in the middle of the active path travel of the circuit breaker handle, which is closed or turned OFF, and the circuit breaker can be locked in the position of closing ON or opening OFF, and the circuit breaker is closed at this time. The device is restricted in activity, and the action of closing or turning OFF is not arbitrarily performed. The key on the lock device of the switch is positioned at the locked position or the set position, and the switch is placed on the circuit breaker. The key in the lock of the locking device can be completely pulled out or at least one of the keys can be pulled out of the lock; a switch key is placed on the control box, and the switch key is placed on the lock key in the control box and the lock on the lock device of the switch Corresponding to the key number, the switch key placement control box and the switch locking device are separate independent components, and the switch key placement control box has at least one key that cannot be pulled out, At least one key on the lock on the switch locking device on the circuit breaker is pulled out, and the internal control mechanism of the switch key is placed in accordance with the required action sequence to achieve the function according to the required function. The function of pulling out or unplugging. An improved interlocking device between circuit breakers includes: a switch locking device, the switch locking device is disposed on a circuit breaker, the switch locking device and the circuit breaker are one or plural, and the switch is locked The gear lever of the lock on the device can be positioned in the middle of the active path travel of the circuit breaker handle, which is closed or turned OFF, and the circuit breaker can be locked in the position of closing ON or opening OFF, and the circuit breaker is closed at this time. The device is restricted in activity and cannot be arbitrarily turned ON or turned OFF. The switch is locked on the lock device. The key is located in the locked position or the set position, and can be pulled out from the lock, and the key in the lock of the switch locking device disposed on the circuit breaker can be completely pulled out or at least one or more is pulled out of the lock; a switch key Positioning a control box, the key number in the switch key placement control box corresponds to a key number on the lock on the switch locking device, the switch key placement control box and the switch locking device are separate independent components, the switch key At least one key of the placement control box cannot be pulled out, and at least one key corresponding to the key on the lock on the switch locking device on the circuit breaker is pulled out, and the switch key is placed according to the required sequence of operations. The internal mechanism of the control box acts to achieve the function of pulling out or unplugging the key according to the demand function; an external braking mechanism, the external braking mechanism is electrically connected with the position state contact of the circuit breaker and the state of the switch key placement control box Braking the trip device of the circuit breaker; placing the control box and the external brake mechanism according to the switch locking device and the switch key Together, can achieve functional mechanical and electrical interlock between circuit breakers.