CN218996591U - Isolating switch locking device - Google Patents
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- CN218996591U CN218996591U CN202223399788.7U CN202223399788U CN218996591U CN 218996591 U CN218996591 U CN 218996591U CN 202223399788 U CN202223399788 U CN 202223399788U CN 218996591 U CN218996591 U CN 218996591U
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Abstract
The utility model provides a blocking device of an isolating switch, which belongs to the technical field of electricity stealing protection and comprises the following components: the device comprises a first isolation cover, a second isolation cover, a connecting piece and a limiting ring. The second isolation cover is arranged on one side of the first isolation cover and is opposite to the first isolation cover, and the second isolation cover is matched with the first isolation cover to be used for being sleeved and positioned on the outer side of the isolating switch contact. The connecting piece is arranged on the first isolation cover and the second isolation cover and is used for positioning the first isolation cover and the second isolation cover. The limiting ring is fixed on the outer side surfaces of the first isolation cover and the second isolation cover, the operating rod penetrates through the limiting ring and is used for limiting the operating rod by means of the connection relation between the first isolation cover and the second isolation cover. According to the isolating switch locking device provided by the utility model, the isolation of the isolating switch contact is realized through the first isolating cover and the second isolating cover, and the swing of the operating rod is avoided through the arrangement of the limiting ring, so that the whole device has higher integration level and better safety protection effect.
Description
Technical Field
The utility model belongs to the technical field of electricity larceny protection, and particularly relates to a blocking device of an isolating switch.
Background
According to the requirements of the optimization of the commercial environment about the industrial expansion matched engineering implementation: in the implementation process of the high-pressure industrial expansion engineering, the matched engineering of the user is required to be earlier than the power receiving engineering of the user. However, in the practical implementation process, it is found that part of illegal users steal electricity through time difference and a disconnecting switch, etc., so that loss of a power grid and certain potential safety hazard are caused.
Disclosure of Invention
The utility model aims to provide a blocking device of an isolating switch, which aims to solve the problem of electricity stealing at the isolating switch.
In order to achieve the above purpose, the utility model adopts the following technical scheme: providing an isolation switch lockout device comprising:
a first isolation cover;
the second isolation cover is arranged on one side of the first isolation cover and is opposite to the first isolation cover, and the second isolation cover is matched with the first isolation cover for sleeving and positioning on the outer side of the isolating switch contact;
the connecting piece is arranged on the first isolation cover and the second isolation cover and is used for positioning the first isolation cover and the second isolation cover;
and the limiting ring is fixed on the outer side surfaces of the first isolation cover and the second isolation cover, and the operating rod penetrates through the limiting ring and is used for limiting the operating rod by means of the connection relation of the first isolation cover and the second isolation cover.
In one possible implementation manner, the top surface of the first isolation cover and the top surface of the second isolation cover are provided with connecting plates, and the connecting piece is installed on two connecting plates.
In one possible implementation manner, the connecting piece comprises a plurality of positioning buckles, and a plurality of positioning buckles are sequentially fixed on the connecting plate.
In one possible implementation manner, the positioning buckle comprises a female buckle and a male buckle, the male buckle and the female buckle are respectively located on two sides, away from the connecting plates, of the connecting plates, and the male buckle and the female buckle are in clamping fit.
In one possible implementation, the first and second shields are each made of an insulating material.
In one possible implementation, the bottom edge of the first cage and the bottom edge of the second cage are integrally formed.
In one possible implementation manner, a yielding groove is formed in the top edge of the first isolation cover and the top edge of the second opposite isolation cover, and the first isolation cover and the second isolation cover are used for being sleeved on the isolating switch contact through the yielding groove.
In one possible implementation manner, two connection plates are arranged oppositely and in parallel, and the two connection plates are distributed on two sides of the yielding groove.
In one possible implementation manner, the first isolation cover and the second isolation cover are provided with observation holes.
In one possible implementation, the bottom of the limiting ring is fixed on the first isolation cover and the second isolation cover, and the top of the limiting ring extends outwards.
The isolating switch locking device provided by the utility model has the beneficial effects that: compared with the prior art, the first isolation cover and the second isolation cover in the isolation switch locking device are oppositely arranged, and the first isolation cover and the second isolation cover are matched for being sleeved and positioned on the outer side of the isolation switch contact. The connecting piece is installed on first cage and second cage, realizes the location of first cage and second cage through setting up the connecting piece. And limiting rings are fixed on the outer side surfaces of the first isolation cover and the second isolation cover.
In practical application, the isolating switch contact can be well isolated from the outside through the first isolating cover and the second isolating cover. The first isolation cover and the second isolation cover can be stably positioned on the isolating switch contact through the connecting piece, after the positions of the first isolation cover and the second isolation cover are determined, the position of the limiting ring is determined, and as the operating rod penetrates through the limiting ring, the operating rod can exert an acting force on the limiting ring if moving, and the position of the limiting ring is kept stable, so that the movement of the operating rod is limited. The isolation of isolator contact has been realized through first cage and second cage to this application, and through the setting of spacing ring, has avoided the swing of action bars, and the level is higher in whole device integration to have better safety protection effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a lockout device for an isolator provided in an embodiment of the present utility model;
fig. 2 is a top view of a locking device of an isolating switch according to an embodiment of the present utility model.
In the figure: 1. a first isolation cover; 2. a second isolation cover; 3. a connecting plate; 4. a limiting ring; 5. an observation hole; 6. a relief groove; 7. and a connecting piece.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 and 2, a description will be given of a locking device for an isolating switch according to the present utility model. An isolator-lock comprising: the first isolation cover 1, the second isolation cover 2, the connecting piece 7 and the limiting ring 4. The second isolation cover 2 is arranged on one side of the first isolation cover 1 and is opposite to the first isolation cover 1, and the second isolation cover 2 is matched with the first isolation cover 1 to be sleeved and positioned on the outer side of the isolating switch contact. The connecting member 7 is mounted on the first and second cages 1 and 2 for positioning the first and second cages 1 and 2. The limiting ring 4 is fixed on the outer side surfaces of the first isolation cover 1 and the second isolation cover 2, and the limiting ring 4 is internally penetrated with an operating rod and is used for limiting the operating rod by means of the connection relation between the first isolation cover 1 and the second isolation cover 2.
The isolating switch locking device provided by the utility model has the beneficial effects that: compared with the prior art, in the isolating switch locking device, the first isolating cover 1 and the second isolating cover 2 are oppositely arranged, and the first isolating cover 1 and the second isolating cover 2 are matched for sleeving and positioning on the outer side of an isolating switch contact. The connecting piece 7 is arranged on the first isolation cover 1 and the second isolation cover 2, and the positioning of the first isolation cover 1 and the second isolation cover 2 is realized by arranging the connecting piece 7. A limiting ring 4 is fixed on the outer side surfaces of the first isolation cover 1 and the second isolation cover 2.
In practical application, the isolating switch contact can be well isolated from the outside through the first isolating cover 1 and the second isolating cover 2. The first isolation cover 1 and the second isolation cover 2 can be stably positioned on the isolating switch contact through the connecting piece 7, after the positions of the first isolation cover 1 and the second isolation cover 2 are determined, the position of the limiting ring 4 is determined, and as the operating rod is penetrated in the limiting ring 4, the operating rod can exert an acting force on the limiting ring 4 if moving, and the position of the limiting ring 4 is kept stable, so that the movement of the operating rod is limited. The isolation of isolator contacts is realized through the first isolation cover 1 and the second isolation cover 2, and the swinging of the operating rod is avoided through the arrangement of the limiting ring 4, so that the whole device is high in integration level and has a good safety protection effect.
Related components of the existing isolating switch comprise a brake bar, an operating bar is arranged on the brake bar, the brake bar can drive the operating bar to move, and in order to ensure effective transmission of electric energy and prevent electricity theft, the movement of the brake bar, namely the movement of the operating bar, needs to be limited.
In recent years, with the high-speed development of economy in China, infrastructure construction is more rapid, and higher requirements are put on the operation reliability of various high-voltage electrical equipment of a power system; the isolating switch is in the worst working environment in various devices of the power system, is completely exposed to the atmosphere and is corroded by acid rain, salt fog and wind and sand. Because the existing isolating switch has the defects in design, the isolating switch has poor current passing capability and short-circuit current bearing capability; self-cleaning cannot be realized, and maintenance is often required; and has the defects of high heat generation of the conductive loop, easy corrosion of the transmission part, poor corrosion resistance and the like.
The high-voltage isolating switch is an important switching device in power plants and substation electrical systems, and as the name implies, plays an isolating role in a circuit so that an maintainer can safely operate and overhaul power equipment. Because the usage amount is large, the requirements on the working reliability are high, and the influences on the design, establishment and safe operation of the substation and the power plant are large. Because the knife switch has the main characteristic of no arc extinguishing capability, the knife switch can only be used for switching on and off a circuit under the condition of no load current, and the knife switch has higher requirements on the working performance of the grounding knife switch.
The isolating switch is a switching device which is used for isolating a power supply, switching operation and switching on and off a small current circuit and has no arc extinguishing function. When the isolating switch is in the separated position, the contacts have an insulation distance and an obvious disconnection mark which meet the specified requirements; and when the isolating switch is in the closed position, the switch equipment can bear the current under the normal loop condition and the current under the abnormal condition within the specified time.
As the voltage level of the power grid is continuously improved, the requirements of electric equipment on the power supply reliability are also higher and higher; the high-voltage isolating switch operates under the high-voltage and high-current states, and the working reliability of the high-voltage isolating switch has close relation with the temperature rise of the contact. In the running process of the power grid, the reasons such as mechanical vibration and contact ablation can possibly deteriorate the contact condition, increase the contact resistance, cause the contact temperature to rise, aggravate the oxidation of the contact surface, cause the arc discharge at the local fusion welding or contact loosening position, and finally cause serious accidents such as damage to electrical equipment and even power failure.
The traditional temperature measurement mode is contact measurement, is not suitable for parts working under high-voltage and high-current environments, is widely applied to infrared thermal imagers in recent years, is not suitable for on-line monitoring and automatic control due to high price and manual operation, and cannot be widely popularized in production sites due to complicated structure, high cost and low working reliability of other measurement methods.
In some embodiments of the isolating switch locking device provided in the present application, referring to fig. 1 and 2, the top surface of the first isolating cover 1 and the top surface of the second isolating cover 2 are both provided with connection plates 3, and the connection piece 7 is mounted on the two connection plates 3. Firstly, in the actual application process, the position of the isolating switch contact is determined, more importantly, the isolating switch contact has a certain volume, so that the problem of illegal power consumption existing by partial users is solved when the completion of high-voltage industrial expansion engineering is inconsistent with the application acceptance time of the users, and the isolating switch contact needs to be completely wrapped by the first isolating cover 1 and the second isolating cover 2. Therefore, avoidance grooves are required to be formed in the first isolation cover 1 and the second isolation cover 2, and the two avoidance grooves are arranged oppositely to form a cavity for covering the isolating switch contact.
At this time, the first isolation cover 1 and the second isolation cover 2 can be regarded as split structures, and for the convenience of installation of the connecting piece 7, the connecting plates 3 are fixed on the outer side surfaces of the first isolation cover 1 and the second isolation cover 2, and the connecting plates 3 on the first isolation cover 1 and the second isolation cover 2 are oppositely arranged, so that the connecting piece 7 can be clamped on the two connecting plates 3, and the positioning of the first isolation cover 1 and the second isolation cover 2 can be completed through the connecting plates 3.
In some embodiments of the disconnecting switch locking device provided in the present application, referring to fig. 1 and 2, the connecting piece 7 includes a plurality of positioning buckles, and the plurality of positioning buckles are sequentially fixed on the connecting plate 3. The positioning buckles are sequentially distributed along the length direction of the connecting plate 3, and the stability of connection between the two isolation covers can be ensured by arranging the positioning buckles. And the two connection plates 3 are integrally formed with the first and second cages 1 and 2, respectively, due to the above arrangement, the two connection plates 3 are normally vertically fixed on the respective outer sides of the first and second cages 1 and 2.
With the development of science and technology, high-tech electricity stealing techniques make it difficult to discriminate, define and evidence electricity stealing actions, and common electricity stealing techniques include: the electric larceny methods have high concealment and flexibility, bring great difficulty to the electric larceny field reconnaissance work, and further promote the electric larceny behavior of users.
At present, the national network power grid has no systematic tool for the anti-electricity-stealing service, the company has high anti-electricity-stealing service discreteness, and no relevant statistical analysis, so that the development condition of the anti-electricity-stealing service can not be effectively controlled, and the establishment of an anti-electricity-stealing work plan is not facilitated. Meanwhile, the traditional anti-electricity-stealing investigation mode cannot clearly discriminate and locate electricity stealing behaviors, so that the accuracy of anti-electricity-stealing diagnosis and the operation efficiency are relatively low; the traditional anti-electricity-theft method can not timely and accurately locate the electricity-theft condition of the user, and can not accurately count the information such as electricity-theft quantity, electricity charge and the like.
In order to prevent the electricity stealing phenomenon, the power supply department generally takes measures to put the ammeter into the ammeter box, locks the ammeter box door by a through mechanical lock to prevent other personnel from being opened at will, and the through lock used in the prior art has a simple structure and is easy to be destroyed and opened by personnel, and especially in some areas where the ammeter box is not in place under supervision, the ammeter box is often opened privately by users, and the circuit is lapped, so that the electric energy is stolen, serious economic loss is caused for the power department, potential safety hazards exist in the electricity stealing process, and the current ammeter box cannot play a safe and effective role in electricity stealing.
In some embodiments of the isolating switch locking device provided in the present application, referring to fig. 1 and 2, the positioning buckle includes a female buckle and a male buckle, the male buckle and the female buckle are respectively located on the sides of the two connecting plates 3 away from each other, and the male buckle and the female buckle are in clamping fit.
The female buckle and the male buckle are respectively arranged on the side surfaces of the two connecting plates 3, which are far away from each other, the female buckle is provided with an inserting rod, the inserting rod and the female buckle are integrally formed, and the inserting rod penetrates through the two connecting plates 3 and is matched with the male buckle in a clamping way. In order to prevent the sub-buckle from slipping off the inserting rod, a positioning ball is arranged on the inserting rod, the sub-buckle is sleeved on the inserting rod through certain deformation and is limited between the positioning ball and the connecting plate 3, and finally the positioning of the first isolation cover 1 and the second isolation cover 2 is completed.
During assembly of the various devices, it is often necessary to secure the two components together, which typically takes the form of a connector 7 that connects the two components together.
At present, the two parts are connected in various connection modes, such as a fixed connection mode through screws or bolts and the like, namely a common connection mode, the two parts are fixedly connected together through the screws or bolts, the screws or bolts can be used for connecting, high installation strength is achieved, the stability and reliability of connection between the connected parts can be effectively ensured, however, the installation process of the connection mode is complex, the installation time is long, and the installation cost is high. In addition, in the prior art, two components are fixedly connected together in a snap-fit manner.
In some embodiments of the isolation switch locking device provided in the present application, the first isolation cover 1 and the second isolation cover 2 are all made of insulating materials. In order to ensure that the disconnecting switch contact and other conductive components can stably operate, the first isolation cover 1 and the second isolation cover 2 can be insulating nonmetallic material parts, so that the problem that the first isolation cover 1 and the second isolation cover 2 are conductive is avoided.
In order to have a certain insulation effect, the first insulation cover 1 and the second insulation cover 2 themselves need to have a certain structural strength and a certain fire resistance.
As an outdoor high voltage disconnector for air break, it mainly serves to provide electrical isolation for high voltage electrical equipment in no-load condition, so that the disconnector does not have the ability to break rated current, this isolation may be daily operation or for maintenance of the high voltage equipment.
The folding isolating switch comprises isolating switch moving and fixed contacts arranged front and back and a folding conducting rod arranged between the isolating switch moving and fixed contacts, wherein the rear end of the conducting rod is a contact connecting end used for being electrically connected with the isolating switch fixed contacts, the conducting rod can realize switching on and off between the isolating switch moving and fixed contacts through horizontal folding action, and along with the development of series compensation technology, after the series compensation device is adopted in a power system, the current required to be switched on and off by the isolating switch reaches 6300A, and the recovery voltage reaches 7000V.
In the circuit system, when a circuit breaks down or needs to be overhauled, the circuit breaker trips, and at the moment, the isolating switch plays a role of cutting off small current or providing an obvious port so as to ensure the safety of workers during maintenance or overhauling. Under the general condition, the isolating switch has two forms, namely an open type isolating switch and a gas insulated metal closed type isolating switch, the open type isolating switch is directly exposed in the air, and obvious fracture can be seen when the isolating switch is opened, but the isolating switch is large in size and heavy.
The gas-insulated metal-enclosed isolating switch has small volume and high reliability, is widely applied, comprises three isolating switch single phases, each isolating switch single phase comprises a cylinder, each cylinder is internally provided with a moving contact, a fixed contact and a driving mechanism for driving the moving contact to act, and most of the driving mechanisms are electrically driven
In some embodiments of the isolation switch locking device provided in the present application, referring to fig. 1 and 2, the bottom edge of the first isolation cover 1 and the bottom edge of the second isolation cover 2 are integrally formed. If the first and second isolation covers 1 and 2 are all of a split structure, at this time, in order to ensure a strong isolation effect, that is, to avoid the first and second isolation covers 1 and 2 from being separated, at least two connectors 7 are required to be provided to ensure that the isolating switch contacts are covered by an effective package, but such a structure is inconvenient to install and detach.
In order to solve the problem, the bottom edges of the two isolation covers are integrally formed, so that the connection strength is guaranteed on one hand through the integrally formed arrangement, the risk of plastic deformation and even fracture of the isolation covers caused by external impact is reduced, more importantly, the use quantity of the connecting pieces 7 is reduced through the integrally formed arrangement, and the assembly is convenient.
In some embodiments of the isolation switch locking device provided in the present application, referring to fig. 1 and 2, a yielding groove 6 is formed on the top edge of the first isolation cover 1 and the top edge of the opposite second isolation cover 2, and the first isolation cover 1 and the second isolation cover 2 are used for being sleeved on the isolation switch contact through the yielding groove 6. When the isolating switch contact is required to be covered by the first isolating cover 1 and the second isolating cover 2, the isolating switch contact can be made to enter by pulling the two connecting plates 3 at the position of the abdicating groove 6, the connecting plates 3 can drive the corresponding positions of the corresponding first isolating cover 1 or second isolating cover 2 to deform, and finally the size of the abdicating groove 6 is increased. At this time, it is necessary to ensure that both the first and second shields 1 and 2 have a certain elastic deformation capability.
The first isolation cover 1 and the second isolation cover 2 are oppositely arranged, and the first isolation cover 1 and the second isolation cover 2 are matched to be sleeved and positioned on the outer side of the isolating switch contact. The connecting piece 7 is arranged on the first isolation cover 1 and the second isolation cover 2, and the positioning of the first isolation cover 1 and the second isolation cover 2 is realized by arranging the connecting piece 7. A limiting ring 4 is fixed on the outer side surfaces of the first isolation cover 1 and the second isolation cover 2.
In practical application, the isolating switch contact can be well isolated from the outside through the first isolating cover 1 and the second isolating cover 2. The first isolation cover 1 and the second isolation cover 2 can be stably positioned on the isolating switch contact through the connecting piece 7, after the positions of the first isolation cover 1 and the second isolation cover 2 are determined, the position of the limiting ring 4 is determined, and as the operating rod is penetrated in the limiting ring 4, the operating rod can exert an acting force on the limiting ring 4 if moving, and the position of the limiting ring 4 is kept stable, so that the movement of the operating rod is limited. The isolation of isolator contacts is realized through the first isolation cover 1 and the second isolation cover 2, and the swinging of the operating rod is avoided through the arrangement of the limiting ring 4, so that the whole device is high in integration level and has a good safety protection effect.
In some embodiments of the isolating switch locking device provided in the present application, referring to fig. 1 and 2, two connecting plates 3 are disposed opposite and parallel, and two connecting plates 3 are distributed on two sides of the yielding groove 6. The installation of a plurality of female buttons and the male buttons is facilitated through the arrangement.
In some embodiments of the isolation switch locking device provided in the present application, referring to fig. 1, a viewing hole 5 is provided on the first isolation cover 1 and the second isolation cover 2. In general, the first isolation cover 1 and the second isolation cover 2 are made of opaque materials, but it is inconvenient to observe the state of the isolating switch contact at this time, based on the above problem, an observation hole 5 may be provided on the side edge of the first isolation cover 1 and the second isolation cover 2, where the observation hole 5 depends on the size of the isolating switch contact.
In some embodiments of the isolating switch locking device provided in the present application, referring to fig. 1, the bottom of the limiting ring 4 is fixed on the first isolating cover 1 and the second isolating cover 2, and the top of the limiting ring 4 extends outwards. The limiting ring 4 mainly serves to limit the swing of the operating rod, so that the connection strength of the limiting ring 4 and the first isolation cover 1 and the second isolation cover 2 is a key for ensuring the effect, and therefore, the limiting ring 4 is integrally formed on the first isolation cover 1 and the second isolation cover 2.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. Disconnecting switch locking device, characterized in that it comprises:
a first isolation cover;
the second isolation cover is arranged on one side of the first isolation cover and is opposite to the first isolation cover, and the second isolation cover is matched with the first isolation cover for sleeving and positioning on the outer side of the isolating switch contact;
the connecting piece is arranged on the first isolation cover and the second isolation cover and is used for positioning the first isolation cover and the second isolation cover;
and the limiting ring is fixed on the outer side surfaces of the first isolation cover and the second isolation cover, and the operating rod penetrates through the limiting ring and is used for limiting the operating rod by means of the connection relation of the first isolation cover and the second isolation cover.
2. The disconnector lock-out device as recited in claim 1, wherein said top surface of said first cage and said top surface of said second cage are each provided with a web, said connector being mounted on both of said webs.
3. The disconnector locking device as recited in claim 2, wherein said connector includes a plurality of retaining tabs, a plurality of said retaining tabs being secured to said connector plate in turn.
4. The disconnector locking device as recited in claim 3, wherein said retaining clip comprises a female clip and a male clip, said male clip and said female clip being located on opposite sides of said two connecting plates, respectively, and said male clip and said female clip being snap-fit.
5. The disconnector locking device as recited in claim 1, wherein said first and second shields are each an insulating material piece.
6. The disconnector locking device as recited in claim 2, wherein a bottom edge of said first cage and a bottom edge of said second cage are integrally formed.
7. The disconnector locking device of claim 6 wherein a relief groove is formed in each of a top edge of said first cage and a top edge of said second opposing cage, said first cage and said second cage being adapted to be sleeved over a disconnector contact by passing from said relief groove.
8. The disconnector locking device as recited in claim 7, wherein two of said webs are disposed opposite and parallel to each other, and wherein two of said webs are disposed on opposite sides of said relief slot.
9. The disconnector locking device as recited in claim 1, wherein said first and second shields are provided with viewing apertures.
10. The disconnector lock-out device as recited in claim 1 wherein said bottom of said stop collar is secured to said first and second shields and wherein said top of said stop collar extends outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223399788.7U CN218996591U (en) | 2022-12-19 | 2022-12-19 | Isolating switch locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223399788.7U CN218996591U (en) | 2022-12-19 | 2022-12-19 | Isolating switch locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218996591U true CN218996591U (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223399788.7U Active CN218996591U (en) | 2022-12-19 | 2022-12-19 | Isolating switch locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218996591U (en) |
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- 2022-12-19 CN CN202223399788.7U patent/CN218996591U/en active Active
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