CN205985912U - Put type of puing aside cubical switchboard among metal -enclosed type - Google Patents
Put type of puing aside cubical switchboard among metal -enclosed type Download PDFInfo
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- CN205985912U CN205985912U CN201620924380.2U CN201620924380U CN205985912U CN 205985912 U CN205985912 U CN 205985912U CN 201620924380 U CN201620924380 U CN 201620924380U CN 205985912 U CN205985912 U CN 205985912U
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- handcart
- switch cubicle
- room
- main bus
- curtain plate
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Abstract
The utility model provides a put type of puing aside cubical switchboard among metal -enclosed type which characterized in that includes: the casing, the casing is the cuboid, the baffle, it sets up perpendicularly in the cubical switchboard, divide into front portion and rear portion with the cubical switchboard, shutter mechanism curtain plate, it sets up on the baffle, can open and close, main bus -bar room, main bus -bar room are located the rear portion top of cubical switchboard for accept the main bus -bar, handcart room, handcart room are located the anterior middle of cubical switchboard for accept the handcart, cable chamber, cable chamber are located the rear portion below of cubical switchboard, relay instrument room, relay instrument room are located the anterior top of cubical switchboard, quiet contact cover box, quiet contact cover box set up in the main bus -bar room, have the opening to the opening part is relative in shutter mechanism curtain plate, the static contact is arranged in quiet contact cover box, current transformer, it is arranged in the main bus -bar room to it is relative with shutter mechanism curtain plate. This cubical switchboard dependable performance, it is convenient to maintain, and the security is high to installation and commissioning that can be convenient is favorable to improving work efficiency.
Description
Technical field
This utility model is related to electric field, more particularly, to the switch cubicle of electrical equipment.
Background technology
Switch cubicle is a kind of electrical equipment.Generally, outside line is introduced into the master switch in switch cabinet, subsequently into sub-control
Switch, each branch is needed to arrange by it.As instrument, automatic control, motor magnetic switch, various A.C. contactors etc., have also sets
Altitude chamber and low-pressure chamber switch cubicle, are provided with high voltage bus, such as power plant etc., and have is additionally provided with as protecting subtracting in low week of capital equipment
Carry.
The Main Function of switch cubicle is to carry out generating electricity, transmit electricity in power system, during distribution and electric energy conversion, carrying out
Folding, control and protection electrical equipment.Part in switch cubicle mainly has chopper, disconnecting switch, on-load switch, operation machine
Structure, transformer and various protection device etc. form.The sorting technique of switch cubicle is a lot, such as permissible by chopper mounting means
It is divided into withdraw-type switch cabinet and fixed switching cabinet；Or the difference according to cabinet body structure, open type switch cubicle, metal envelope can be divided into
Close switch cubicle and metal enclosed armoured switch cabinet；High-tension switch cabinet, Medium Voltage Switchgear can be divided into according to electric pressure difference again
With low-tension switch cabinet etc..Be primarily adapted for use in power plant, transformer station, petrochemical industry, metallurgical steel rolling, industry light industry textile industry, industrial enterprise and
The various difference occasion such as residential quarters, skyscraper.
The layout of existing switch cubicle is not reasonable, thus leading to the maintenance inconvenience of operator, and easily causes tactile
Electrification, safety and convenience be not good.
Utility model content
The purpose of this utility model is to provide a kind of new switch cubicle so that attendant can be safely and conveniently to electricity
Gas equipment or switch cubicle are safeguarded.
According to one side of the present utility model, provide to put in a kind of metal-enclosed type and remove type switch cubicle, its feature exists
In, including：Housing, described housing is cuboid；Dividing plate (19), it is vertically installed in described switch cubicle, by described switch cubicle
It is divided into front and rear；Valve mechanism curtain plate (14), it is arranged on described dividing plate, can open and close, wherein, described work
Door mechanism's curtain plate (14) includes first group of rectangle upset blade and second group of rectangle overturns blade, and described first group of rectangle overturns leaf
Piece rotates around first axle (14-1), and described second group of rectangle upset blade rotates around the second axle (14-2), described second axle (14-
2) parallel with described first axle (14-2) and be located at below described first axle, wherein said first group and second group of rectangle overturn leaf
Piece includes the equal multiple upset blades of quantity, and described first axle (14-1) is located at each in described first group of rectangle upset blade
The top of the weight of upset blade, and described second axle (14-2) is located at each upset leaf in described second group of rectangle upset blade
The top of the center of gravity of piece；Main bus-bar room (A), described main bus-bar room (A) is located at the rear upper of described switch cubicle, for receiving master
Bus；Handcart room (B), described handcart room (B) is located at the anteriomedial of described switch cubicle, for receiving handcart；Cable vault (C),
Described cable vault (C) is located at the lower rear of described switch cubicle；Relay control room (D), described relay control room (D) is located at
The front upper of described switch cubicle；Fixed contact cover box (6), described fixed contact cover box (6) is arranged in described main bus-bar room (A),
There is opening, and described opening is in described valve mechanism curtain plate (14) relatively；Static contact (5), positioned at described fixed contact cover
In box (6)；Current transformer (7), it is located in described main bus-bar room (A), and relative with described valve mechanism curtain plate (14)；Handss
Car (15), described handcart (15) includes pulley, the first moving contact and the second moving contact, can pass through described in described handcart (15)
Pulley slides in and out described handcart room (B), when described handcart (15) slides into described handcart room (B), described valve mechanism curtain
Plate (14) is opened, thus described first moving contact is connected with described static contact (5), described second moving contact and described Current Mutual Inductance
Device (7) connects；Described handcart (15) is connected with described relay control room (C) also by plug connector (13).
According to an embodiment of the present utility model, described housing is manufactured by aluminizing zinc steel plate, and bolt-connection forms, surface
Using electrostatic molding powder spray treatment.
According to an embodiment of the present utility model, described switch cubicle also includes hoisting board (12), and it is provided in described
The top of switch cubicle, for being connected to lifting appliance when lifting by crane described switch cubicle.
According to an embodiment of the present utility model, described valve mechanism curtain plate (14) is in closing shape in its natural state
State.
According to an embodiment of the present utility model, described handcart (15) is circuit breaker cart, voltage mutual inducer trolley, keeps away
One of thunder device handcart and isolation handcart.
This utility model provide switch cubicle dependable performance, easy to maintenance, safe, and can easily install and
Debugging, thus be conducive to improving work efficiency.
Brief description
Fig. 1 is to put, in metal-enclosed type according to one embodiment of this utility model, the left view removing type switch cubicle.
Fig. 2 is the structural representation of the valve mechanism curtain plate according to an embodiment of the present utility model.
Specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.
Fig. 1 is to put, in metal-enclosed type according to one embodiment of this utility model, the left view removing type switch cubicle.
Left view can clearly and intuitively represent invention main points of the present utility model.
As shown in figure 1, put, in the metal-enclosed type of this utility model offer, the type switch cubicle of removing including：
Housing, described housing is cuboid.Alternatively, housing is that aluminizing zinc steel plate manufactures, and bolt-connection forms.Front/rear door
Using electrostatic molding powder spray treatment.
Dividing plate 19, it is vertically installed in described switch cubicle, and described switch cubicle is divided into front and rear (to correspond respectively to
The right part of Fig. 1 and left part).Anterior generally operating portion, rear portion is generally high pressure or the part of arrangement cable, and the two separately sets
Put the safety of the personnel of being beneficial to, prevent high pressure and get an electric shock.Alternatively, dividing plate is the metallic plate processing through electroplating anticorrosion.
Valve mechanism curtain plate 14, it is arranged on described dividing plate, can open and close.When opening, switch cubicle and front portion
With rear portion UNICOM such that it is able to connect the electric component of front and rear；And when closing (during such as attendant's maintenance), then may be used
To isolate front and rear it is ensured that the safety of personnel.Opening of valve mechanism curtain plate 14 can be automatic or manual
, or can be backed down by handcart, and be automatically switched off when handcart exits, must not arbitrarily open curtain plate during maintenance.
Bus-bar room A, described main bus-bar room A are located at the rear upper of described switch cubicle, for receiving main bus-bar.It is usually three
Root main bus-bar (U phase, V phase and W phase or A phase, B phase and C phase).Closed by bus room cover plate 1 above bus-bar room.Main bus-bar through
Each cabinet bus-bar room, is installed by the corresponding corresponding cabinet of the labelling printing on bus during installation.
Handcart room B, described handcart room B is located at the anteriomedial of described switch cubicle, for receiving handcart.When handcart pushes,
Valve mechanism curtain plate 14 will be made to open, and during handcart pull-out, valve mechanism curtain plate 14 will be closed.
Cable vault C, described cable vault C are located at the lower rear of described switch cubicle.In this compartment, generally installing electric current is mutual
Sensor, spark gap (or overvoltage protection device), inlet wire or outlet cable, zero sequence current mutual inductor and earthed switch etc..Cable
The arrangement of room will be described in more detail in preferred implementation later.
Relay control room D, described relay control room D are located at the front upper of described switch cubicle.Arrange in control room
There are relay and terminal block, other control and protection unit being used for operating, observing, switch, instrument etc., be installed in this compartment
On external door.
Fixed contact cover box 6, described fixed contact cover box 6 is arranged in described main bus-bar room A, has opening, and described opens
Mouthful place is relative with described valve mechanism curtain plate 14, mentioned here with respect to, refer to opening towards described valve mechanism curtain plate 14, when
When curtain plate is opened, the electric component on handcart can be inserted in described fixed contact cover box 6 by this opening, and with positioned at described
Static contact 5 in fixed contact cover box 6 contacts.
Current transformer 7, it is located in described main bus-bar room A, and relative with described valve mechanism curtain plate 14.This will be rear
It is described in detail in literary composition.
According to a preferred implementation of the present utility model, described housing is manufactured by aluminizing zinc steel plate, bolt-connection and
Become, surface adopts electrostatic molding powder spray treatment.
According to a preferred implementation of the present utility model, described switch cubicle also includes hoisting board 12, and it is provided in
The top of described switch cubicle, for being connected to lifting appliance when lifting by crane described switch cubicle.Boatswain chair 12 is preferably provided in dividing plate
On 19 extended line, thus more firmly and reliable when handling.
According to a preferred implementation of the present utility model, described valve mechanism curtain plate 14 be up and down formula curtain plate or
Convertible activity curtain plate.Up and down formula can be that this valve mechanism curtain plate 14 slides up and down along dividing plate, thus beating on an off
Close；And convertible can be this valve mechanism curtain plate 14 pivoting, thus opening and closing, this mode is similar to shutter
Form.Valve mechanism curtain plate can be backed down by handcart, or can be that handcart connects link gear, thus in handcart activity
When drive being turned on and off of valve mechanism curtain plate.Valve mechanism curtain plate 14 can be using the work of any known or following exploitation
Door mechanism.
Fig. 2 is the structural representation of the valve mechanism curtain plate according to an embodiment of the present utility model.With reference to
Fig. 2 describes the valve mechanism curtain plate 14 of upset structure in detail.
As shown in Fig. 2 described valve mechanism curtain plate 14 includes first group of rectangle upset blade and second group of rectangle overturns leaf
Piece, described first group of rectangle upset blade rotates around first axle 14-1, and described second group of rectangle upset blade is around the second axle 14-2
Rotation, described second axle 14-2 parallel with described first axle 14-1 and be located at described first axle below, wherein said first group with
Second group of rectangle upset blade includes the equal multiple upset blades of quantity, and described first axle 14-1 is located at described first group of rectangle
The top of the weight of each upset blade in upset blade, and described second axle 14-2 is located at described second group of rectangle upset blade
In each upset blade center of gravity top.Although it is to be appreciated that first shown in Fig. 2 group and second group of rectangle reversion
Between blade, there is gap, but this is used for the purpose of convenient viewing and understands, is suitably without space therebetween, or two
Can be closed with insulant between person.
When handcart pushes, then can back down described upset blade, blade rotates around axle 14-1 and 14-2, thus handcart
Contact head stretches into main bus-bar room A by this upset blade, and the first-class connection with stationary contact, and when handcart exits, due to trip shaft
14-1 and 14-2 is in the top of each blade center of gravity, therefore can ensure that each blade of guarantee is automatically extensive under gravity
Arrive closed mode again, thus ensureing the safety of personnel.
Blade quantity of the present utility model is not limited to two or one or more.When every group include multiple
During upset blade, due to being independent of each other between each upset blade, therefore only need to several upset leaves in some cases
Piece overturns, and need not drive all of blade.Such beneficial effect is, under inspecting state, even if having touched some upsets
Blade, because other upset blades do not overturn, so reduce the risk of electric shock.Secondly, if certain upset blade occurs
Damage, then change this independent blade, need not all replace, which save cost, improve reliability.
According to a preferred implementation of the present utility model, described valve mechanism curtain plate 14 is in pass in its natural state
Closed state.This advantageously ensures the safety of attendant.
According to a preferred embodiment of the present invention, put the type switch cubicle of removing in metal-enclosed type and also include three main mothers
Wire casing 4, described three main bus-bar grooves 4 are arranged on described main bus-bar in the mode parallel and parallel to the ground with described dividing plate 19
In the A of room, for receiving three main bus-bars respectively.It will be understood by those skilled in the art that the line of three main bus-bar grooves 4 can hang down
Straight ground is arranged, or three main bus-bar grooves can triangular in shape be arranged, and that is, these three main bus-bar grooves can be each in specific
At three fixed points of triangle.
According to a preferred embodiment of the present invention, put the type switch cubicle of removing in metal-enclosed type and also include drawing under three
Described three main lines are connected to described static contact by branch bar 2 respectively.
According to a preferred embodiment of the present invention, put the type switch cubicle of removing in metal-enclosed type and also include handcart 15,
Described handcart 15 includes pulley, the first moving contact and the second moving contact, can be slided into by described pulley in described handcart 15 and
Skid off described handcart room B, when described handcart 15 slides into described handcart room B, described valve mechanism curtain plate 14 is opened, thus described
First moving contact is connected with described static contact 5, and described second moving contact is connected with described current transformer 7；Described handcart 15 is also
It is connected with described relay control room C by plug connector 13.
According to a preferred embodiment of the present invention, put the type switch cubicle of removing in metal-enclosed type and also include earth bus
10, it is arranged on the bottom of described cable vault C, is connected with described current transformer 7 by cable 8.
According to a preferred embodiment of the present invention, put the type switch cubicle of removing in metal-enclosed type and also include earthed switch
9, it is arranged on the dividing plate 19 in described C, is connected with described current transformer 7；
According to a preferred embodiment of the present invention, put the type switch cubicle of removing in metal-enclosed type and also include earthed switch
Operating mechanism 17, before and after it runs through described housing and parallel to the ground, described earthing switch operating mechanism 17 and described ground connection are opened
Close 9 mechanical connections, to control the opening and closing of described earthed switch 9；
According to a preferred embodiment of the present invention, put the type switch cubicle of removing in metal-enclosed type and also include little bus-bar room
E, it is located above described relay control room D；
According to a preferred embodiment of the present invention, put in metal-enclosed type the type switch cubicle of removing also include secondary line prevent
Backplate 18, is arranged on the lower front of described switch cubicle, and is separated with described handcart room B by horizontal baffle 16, described secondary
Space within line protective plate 18 is used for the cable laid the cable introducing outside switch cubicle or draw from described switch cubicle.
According to a preferred embodiment of the present invention, put the type switch cubicle of removing in metal-enclosed type and further include three
Insulating sheath 3, is separately positioned in described three main bus-bar grooves 4.Insulating sheath 3 helps to ensure that the safety of equipment and personnel.
According to a preferred embodiment of the present invention, wherein, described handcart 15 can be circuit breaker cart, mutual induction of voltage
One of device handcart, arrester handcart and isolation handcart.
According to a preferred embodiment of the present invention, wherein, described earth bus is through whole housing bottom
Grounding copper bar.
According to a preferred embodiment of the present invention, wherein, adopt φ 6 copper rod inside described little bus-bar room, under cause
On terminal in described relay control room D or switch.
According to a preferred embodiment of the present invention, wherein, the space in described secondary protection line plate and described cable
Room separates or is combined into same space.
It is described below in metal-enclosed type of the present utility model and put the installation removing type switch cubicle.
The installation foundation of switch cubicle of the present utility model, typically will be divided into final grouting concrete.It is to lay out for the first time
Closing cabinet installation steel component is angle steel, square steel or channel members installation foundation；Second placing concrete is the benefit on ground
Fill layer (general thickness is 60mm).In placing concrete supplemental layers, the ground level that concrete is formed should be less than steel component
Upper plane (i.e. equipment installed surface) 1～3mm.
When laying basic steel component, first straightening process should be carried out to component；It should be noted that height error, general steel when laying
Plane flatness tolerance on component processed, every square metre should control within 1mm.
When switch cubicle is in single-row arrangement, installation foundation should ensure that and the front corridor of cabinet is advisable not less than 2.5 meters (minimum is not lower than
2 meters)；During dually arrayed, between cabinet, width of corridor is typically no less than 2.8 meters.Maintenance channel after cabinet, at least should be able to freely open back door
(convenient for installing, overhauling, as larger as possible).
Switch cubicle, in handling process, should use specific means of transport, such as crane or fork truck etc., forbid using crowbar,
Cylinder etc., in order to avoid injury device.
Switch cubicle is transported to infield, by drawing or actual demands of engineering, with a certain cabinet body as benchmark, other cabinets
It is close to successively, blending bolt is adjacent cabinet connection fastening.If row's equipment number of units more (more than 10), spell cabinet work
Should start to carry out to two ends from middle part.If holding cabinet and between the walls apart from too small (less than the length of a section main bus-bar), end
1 to 2 cabinet body should after equipment main bus-bar pierces into, then carry out spell cabinet.
After the completion for the treatment of switch cubicle complete combination (assembled), available M12 bolt passes through the lower margin hole of equipment bay and basic steel
Component is connected and fixed, or with being welded equipment and basic steel beam column firm welding.
Wear main bus-bar and connection main bus-bar with draw branch bar when, first that cabinet top main bus-bar room cover plate 1 is tight
Fixing bolt unclamps, and sheds cover plate.
Bus wiped clean, mark according to the cabinet numbering printing on bus and mutually, successively main bus-bar is pierced into cabinet master
Bus-bar room.By main bus-bar joint and main bus-bar with draw branch bar and be bolted fastening.
When bus has insulating requirements, at busbar shiplap joint head, adopt insulating boot box sealing cover；Laterally during bus button cover box, cover should be made
Box latches in down, in order to avoid coming off.
When drawing cable outside connecting, by a cable in cable duct (or interlayer), the cable from cable vault's base plate goes out
String holes stretches in cabinet, carries out after end by the height of bus wiring pile crown in cabinet, and cable is connected to bus wiring pile crown.Simultaneously
End Boards wall is on the support in cabinet.
In connecting secondary cable, pull down the secondary wire protection plate 18 in left side in cabinet, the outside cable introducing or from this cabinet
The cable drawn, all spaces in the backplate of left side are laid, and side wall has support to be used for fixing cable.By two after the completion of cable connection
Secondary line backplate is reinstalled back in situ.
Figure below labelling
1. bus room cover plate
2. draw branch bar down
3. insulate sheath through walls
4. main bus-bar
5. static contact
6. fixed contact cover box
7. current transformer
8. cable
9. earthed switch
10. earth bus
11. little bus room cover plates
12. hoisting boards
13. secondary plugging-in elements
14. valve mechanism curtain plates
15. handcarts
16. horizontal baffles
17. earthed switch operations
18. secondary wire protection plates
It is to be appreciated that above only preferred implementation of the present utility model has been described in detail, but not
Mean that protection domain of the present utility model is limited in disclosed description.For example, in this utility model, each compartment is permissible
Exist independent of other compartments, and the arrangement of each compartment or setting can also exist independent of other compartments.This area skill
Art personnel, according to the description above, the modification under without creative work, the present invention made, add and delete, each fall within this
The protection domain of utility model.
Claims (5)
1. put in a kind of metal-enclosed type and remove type switch cubicle it is characterised in that including：
Housing, described housing is cuboid；
Dividing plate (19), it is vertically installed in described switch cubicle, and described switch cubicle is divided into front and rear；
Valve mechanism curtain plate (14), it is arranged on described dividing plate, can open and close, wherein, described valve mechanism curtain plate
(14) include first group of rectangle upset blade and second group of rectangle overturns blade, described first group of rectangle upset blade is around first axle
(14-1) rotate, described second group of rectangle upset blade rotates around the second axle (14-2), described second axle (14-2) and described the
One axle (14-1) is parallel and is located at below described first axle, and wherein said first group and second group of rectangle upset blade include quantity
Equal multiple upset blades, described first axle (14-1) is located at described first group of rectangle and overturns each upset blade in blade
The top of weight, and described second axle (14-2) is located at the center of gravity of each upset blade in described second group of rectangle upset blade
Top；
Main bus-bar room (A), described main bus-bar room (A) is located at the rear upper of described switch cubicle, for receiving main bus-bar；
Handcart room (B), described handcart room (B) is located at the anteriomedial of described switch cubicle, for receiving handcart；
Cable vault (C), described cable vault (C) is located at the lower rear of described switch cubicle；
Relay control room (D), described relay control room (D) is located at the front upper of described switch cubicle；
Fixed contact cover box (6), described fixed contact cover box (6) is arranged in described main bus-bar room (A), has opening, and described
Opening is in described valve mechanism curtain plate (14) relatively；
Static contact (5), in described fixed contact cover box (6)；
Current transformer (7), it is located in described main bus-bar room (A), and relative with described valve mechanism curtain plate (14)；
Handcart (15), described handcart (15) includes pulley, the first moving contact and the second moving contact, can lead in described handcart (15)
Cross described pulley and slide in and out described handcart room (B), when described handcart (15) slides into described handcart room (B), described valve
Mechanism's curtain plate (14) is opened, thus described first moving contact is connected with described static contact (5), described second moving contact and described electricity
Current transformer (7) connects；Described handcart (15) is connected with described relay control room (C) also by plug connector (13).
2. put in metal-enclosed type according to claim 1 and remove type switch cubicle it is characterised in that described housing is by aluminizing
Zinc steel plate manufactures, and bolt-connection forms, and surface adopts electrostatic molding powder spray treatment.
3. put in metal-enclosed type according to claim 1 and remove type switch cubicle it is characterised in that described switch cubicle also wraps
Include hoisting board (12), it is provided in the top of described switch cubicle, for being connected to lifting appliance when lifting by crane described switch cubicle.
4. put in metal-enclosed type according to claim 1 and remove type switch cubicle it is characterised in that described valve mechanism curtain
Plate (14) is closed in its natural state.
5. put in metal-enclosed type according to claim 1 and remove type switch cubicle it is characterised in that described handcart (15) is
One of circuit breaker cart, voltage mutual inducer trolley, arrester handcart and isolation handcart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620924380.2U CN205985912U (en) | 2016-08-23 | 2016-08-23 | Put type of puing aside cubical switchboard among metal -enclosed type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620924380.2U CN205985912U (en) | 2016-08-23 | 2016-08-23 | Put type of puing aside cubical switchboard among metal -enclosed type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205985912U true CN205985912U (en) | 2017-02-22 |
Family
ID=58034478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620924380.2U Active CN205985912U (en) | 2016-08-23 | 2016-08-23 | Put type of puing aside cubical switchboard among metal -enclosed type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205985912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952844A (en) * | 2020-07-27 | 2020-11-17 | 国网福建省电力有限公司三明供电公司 | Transformer substation's secondary minibus prevents mistake protective housing |
| CN112332285A (en) * | 2020-09-29 | 2021-02-05 | 国网山东省电力公司梁山县供电公司 | Interval safety protection device and method for lightning arrester |
-
2016
- 2016-08-23 CN CN201620924380.2U patent/CN205985912U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952844A (en) * | 2020-07-27 | 2020-11-17 | 国网福建省电力有限公司三明供电公司 | Transformer substation's secondary minibus prevents mistake protective housing |
| CN111952844B (en) * | 2020-07-27 | 2022-04-19 | 国网福建省电力有限公司三明供电公司 | Transformer substation's secondary minibus prevents mistake protective housing |
| CN112332285A (en) * | 2020-09-29 | 2021-02-05 | 国网山东省电力公司梁山县供电公司 | Interval safety protection device and method for lightning arrester |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |