CN103219682B - Power transmission line disconnection protection and emergency power supply device - Google Patents
Power transmission line disconnection protection and emergency power supply device Download PDFInfo
- Publication number
- CN103219682B CN103219682B CN201310161737.7A CN201310161737A CN103219682B CN 103219682 B CN103219682 B CN 103219682B CN 201310161737 A CN201310161737 A CN 201310161737A CN 103219682 B CN103219682 B CN 103219682B
- Authority
- CN
- China
- Prior art keywords
- binding post
- power supply
- transmission line
- line
- pedestal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a power transmission line disconnection protection and emergency power supply device. The power transmission line disconnection protection and emergency power supply device comprises a base, side line connecting columns, an upper line connecting column, a lower line connecting column, a sliding block, a connecting rod, an elastic pull rope, a pull wire and a cover plate. When a line protected by the power transmission line disconnection protection and emergency power supply device is disconnected, the disconnected line falls down to pull the pull wire, so that the sliding block slides, the connecting rod slides to one side far away from a partition plate, and two corresponding line connecting columns are conducted; if other lines are not disconnected, current is conducted to a standby line, and is further transmitted downstream through the standby line; and for the upstream power transmission line disconnection protection and emergency power supply device, the sliding block moves due to line disconnection, so that the line connecting column which is connected with the standby line is conducted with the connecting rod, and the failing line is isolated. According to the power transmission line disconnection protection and emergency power supply device, the disconnected line can be automatically isolated by using the standby line when a power transmission line is disconnected, and power can be supplied emergently, so that the power can be safely transmitted, and can be supplied emergently when a line at a position is disconnected or a plurality of lines at a plurality of positions are disconnected.
Description
Technical field
The invention belongs to a kind of protection and the Emergency power supply unit that are applied to grid power transmission circuit, especially a kind of utilize an additional extra pair many power transmission lines to carry out protecting line protection and Emergency power supply unit.
Background technology
Electric power is indispensable in daily life; but because natural calamity, human factor or other force majeure effects make transmission line break; and the circuit protection device employing used at present is power-off protection; to prevent the safety of disconnection portion position personnel; but this power-off protection also can make local users have a power failure; and can not power-off for a long time in some important place, this just requires that the electric power first-aid personnel of power supply department recover electric power quickly and efficiently, has manufactured pressure to power supply department.Meanwhile, the mode due to this power-off protection makes in electrical network minor issue also can cause power-off protection and user within the scope of is had a power failure, and proposes high standard to the regular maintenance of circuit.
Summary of the invention
The technical problem to be solved in the present invention causes the technical problem of local power-off.
The present invention adopts a siding automatically to cut off the electrical connection of broken string part when broken string occurs certain root power transmission line in circuit and the mode of emergency service substitutes original mode adopting direct power-off protection.This transmission line breaking protection and Emergency power supply unit are made up of pedestal, side binding post, upper binding post, lower binding post, slide block, connecting rod, elastic drag rope, bracing wire, cover plate.Pedestal is a container-like device, is made up of insulating material, and there is a hole in front, have guide rail in the middle part of both sides and below, there is dividing plate centre, and dividing plate two sides has a fixed leg respectively, pedestal take dividing plate as plane of symmetry full symmetric, and at the parts of this statement dividing plate side, opposite side repeats no more; The hole in pedestal front is used for bracing wire and passes; The guide rail of two sides is symmetrical, and there is semicircle resettlement groove at the two ends, left and right of guide rail, and semicircle resettlement groove is used for laying side binding post, porose in semicircle resettlement groove, wiring pin for side binding post stretches out, and the centre of side guide is chute, for connecting rod in interior slip; Under pedestal, square guide rail is used for the slip of slide block, and play the guiding role, lower square guide rail has a placement hole near one end of dividing plate, for the arrangement of lower binding post; Binding post on dividing plate is used for being connected with elastic drag rope.Side binding post is the profile shape corresponding with the resettlement groove of pedestal side guide, external arc is corresponding with resettlement groove, and Inner arc is corresponding with connecting rod, and side binding post is made up of electric conducting material, binding post there is a wiring pin stretch out, be electrically connected for pedestal and outside.Respectively there is a binding post front and back of slide block, middle porose, respectively have a breach up and down, are made up of electric conducting material; Slide block front binding post is used for connecting stay wire, and rear binding post is for connecting elastic drag rope, and middle hole is for installing connecting rod, and upper and lower breach is used for matching with upper and lower binding post.Connecting rod is a bar-shaped part, is made up of electric conducting material, middle coating insulation material, and itself and slide block are insulated.Upper binding post is identical with lower binding post profile, is made up of electric conducting material, and be installed in the corresponding resettlement groove of base and cover plate, side and shoe contact, opposite side stretches out pedestal and outside is electrically connected.There is guide rail cover plate side, identical with square guide rail under pedestal, and have upper binding post resettlement groove in guide rail, coordinate with pedestal, cover above pedestal, cover plate guide rail coordinates guide shoe to slide in guide rail with square guide rail under pedestal.
During normal work, on pedestal, each resettlement groove is equipped with corresponding binding post, connecting rod is contained in the hole of slide block, slide block is arranged on the side near bracket plate of foundation in the middle of pedestal and cover plate two guide rail, slide block front binding post connecting stay wire, rear binding post is connected with the binding post of bracket plate of foundation by elastic drag rope, the upper and lower gap portions of slide block is connected with lower binding post with upper binding post, due to side binding post, connecting rod is conductor, so electric current can from the stud conductor of side to opposite side, insulating material has been applied in the middle of connecting rod, so connecting rod and slide block insulate, slide block is conductor, go up binding post electric current can pass to lower binding post.During use, transmission line breaking protection and electric supply installation are installed on the place higher than transmission line, make bracing wire and power transmission line shape in an angle; bracing wire one end is connected with wire; ensure that the wire of disconnection can pull bracing wire, and then pulls slide block to switch when there is circuit breaking.
When transmission line broken string and Emergency power supply unit are applied in circuit, two lines and emergency service is protected for a siding at this, four, device side binding post is connected between two, the power transmission line that upstream normally uses is connected with that binding post of the close dividing plate of this side, power transmission line place of device opposite side, the binding post away from dividing plate be connected with the power transmission line normally used connects the top binding post of second line protection and Emergency power supply unit, the siding that the below binding post of second line protection and Emergency power supply unit is arranged side by side with this power transmission line normally used is connected.Equally; four, the side binding post of second line protection and Emergency power supply unit is connected between two; the connections mode of opposite side is identical with the mode of connection of first line protection and Emergency power supply unit; be the upper binding post that its binding post away from dividing plate near normal transmission line connects first line protection and Emergency power supply unit equally, the lower binding post of first line protection and Emergency power supply unit connects power transmission line for subsequent use.Equally; if when protecting many simultaneously; second line protection and Emergency power supply unit is connected for first line protection and Emergency power supply unit; as long as the lower binding post of second line protection and Emergency power supply unit connects the upper binding post of the 3rd line protection and Emergency power supply unit; the lower binding post of the 3rd device connects binding post on the 4th device again, and to the last the lower binding post of a device connects siding.
For first line protection and Emergency power supply unit, when circuit is normal, upstream electrical flows through the binding post of this wire side near dividing plate; connecting rod; the opposite side binding post contacted with connecting rod, the binding post of dividing plate opposite side, connecting rod is transferred to downstream line.When the circuit breaking that first line protection and Emergency power supply unit are protected; because circuit breaking falls; pull bracing wire; make skid; connecting rod is made to slide into that side away from dividing plate; corresponding two binding posts of conducting; if All other routes do not break; then electric current is reached downstream by from siding; the line protection of upstream and Emergency power supply unit make slide block move because of broken string equally; make that binding post and the connecting rod conducting of connection siding, and then keep apart the circuit broken down.If there are two circuits to break in a circuit simultaneously, due to series connection mutually in the middle of line protection and Emergency power supply unit, disconnect with upper and lower binding post when slide block moves, and then electric current cannot pass to siding, be that faulty line is de-energized, prevent short circuit.Meanwhile, siding is segmented, prevents multiposition in circuit from breaking down simultaneously and causes short circuit.
In summary, present invention achieves with a siding automatism isolation broken string and emergency service when broken string occurs circuit power transmission line, make electric power transfer to safety, the emergency service when a position single line broken string or multiposition many line broken strings, reduces the pressure that electric power first-aid is safeguarded simultaneously.
Accompanying drawing explanation
Fig. 1 is front view and the A-A direction cutaway view of the pedestal of this transmission line breaking protection and Emergency power supply unit
Fig. 2 is the stereogram of the pedestal of this transmission line breaking protection and Emergency power supply unit
Fig. 3 is vertical view and the B-B direction cutaway view of the slide block of this transmission line breaking protection and Emergency power supply unit
Fig. 4 is the stereogram of the slide block of this transmission line breaking protection and Emergency power supply unit
Fig. 5 is the up/down binding post stereogram of this transmission line breaking protection and Emergency power supply unit
Fig. 6 is the stereogram of the side binding post of this transmission line breaking protection and Emergency power supply unit
Fig. 7 is the stereogram of the cover plate of this transmission line breaking protection and Emergency power supply unit
Fig. 8 is the assembly stereogram (cover plate omits) of this transmission line breaking protection and Emergency power supply unit
Fig. 9 is the assembly front view cutaway view (cover plate omits) of this transmission line breaking protection and Emergency power supply unit
Schematic diagram (for two power transmission lines) is electrically connected when Figure 10 is the work of this transmission line breaking protection and Emergency power supply unit.
Embodiment
Below by example and accompanying drawing thereof, the present invention is described in further details;
See Fig. 1-Fig. 2, the pedestal 1 of this transmission line breaking protection and Emergency power supply unit, pedestal 1 is a container-like device, is made up of insulating material, and there is a hole 6 in front, guide rail is had in the middle part of both sides and below, there is dividing plate 19 centre, and dividing plate 19 two sides has a fixed leg 4 respectively, and pedestal 1 is plane of symmetry full symmetric with dividing plate 19, at the parts of this statement dividing plate 19 side, opposite side repeats no more; The hole 6 in pedestal 1 front passes for bracing wire 12; The guide rail 2 of two sides is symmetrical, there is semicircle resettlement groove 2-c at the two ends, left and right of side guide 2, semicircle resettlement groove 2-c is used for laying side binding post 8, porose 2-a in semicircle resettlement groove 2-c, wiring pin for side binding post 8 stretches out, the centre of side guide 2 is chute 2-b, for connecting rod 14 in interior slip; Pedestal 1 time square guide rail 3, for the slip of slide block 7, play the guiding role, and lower square guide rail 3 has a placement hole 5 near one end of dividing plate 19, for the arrangement of lower binding post 11; Binding post 4 on dividing plate is for being connected with elastic drag rope 13.
See Fig. 3-Fig. 4, the slide block 7 of this transmission line breaking protection and Emergency power supply unit, respectively there is a binding post front and back of slide block 7, and middle porose 7-d respectively has a breach 7-a up and down, is made up of electric conducting material; Slide block 7 front binding post 7-b is used for connecting stay wire 12, and rear binding post 7-c is for connecting elastic drag rope 13, and middle hole 7-d is for installing connecting rod 14, and upper and lower breach 7-a is used for matching with upper and lower binding post 11.
See Fig. 5; the up/down binding post 11 of this transmission line breaking protection and Emergency power supply unit; upper binding post is identical with lower binding post profile; be made up of electric conducting material; be installed in the corresponding resettlement groove 5 of pedestal 1 and cover plate 10; side contacts with slide block 7, and opposite side stretches out pedestal 1 and is electrically connected with outside.
See Fig. 6; the side binding post 8 of this transmission line breaking protection and Emergency power supply unit; side binding post 8 is profile shapes corresponding with the resettlement groove 2-c of pedestal 1 side guide 2; external arc 8-b is corresponding with resettlement groove 2-c; Inner arc 8-a is corresponding with connecting rod 14; side binding post 8 is made up of electric conducting material, side binding post 8 has a wiring pin 8-c stretch out, and is electrically connected for pedestal 1 and outside.
See Fig. 7; the cover plate 10 of this transmission line breaking protection and Emergency power supply unit; there is guide rail 9 cover plate 10 side; identical with pedestal 1 time square guide rail 3; upper binding post resettlement groove 5 is had in guide rail 9; coordinate with pedestal 1, cover above pedestal 1, cover plate 10 guide rail 9 and pedestal 1 time square guide rail 3 coordinates guide shoe 7 to slide in guide rail.
See Fig. 8-Fig. 9, the assembly of this transmission line breaking protection and Emergency power supply unit, during normal work, on pedestal 1, each resettlement groove is equipped with corresponding binding post, connecting rod 14 is contained in the hole 7-d of slide block 7, slide block 7 is arranged in the middle of pedestal 1 and cover plate 10 liang of guide rails near the side of pedestal 1 dividing plate 19, slide block 7 front binding post 7-b connecting stay wire 12, rear binding post 7-c is connected with the binding post 4 of pedestal 1 dividing plate 19 by elastic drag rope 13, slide block about 7 breach 7-a position is connected with lower binding post 11 with upper binding post 11, due to side binding post 8, connecting rod 14 is conductors, so electric current can from the stud conductor of side to opposite side, insulating material has been applied in the middle of connecting rod 14, so connecting rod 14 and slide block 7 insulate, slide block 7 is conductors, go up binding post 11 electric current can pass to lower binding post 11.During use, transmission line breaking protection and electric supply installation are installed on the place higher than transmission line, make bracing wire 12 and power transmission line shape in an angle; bracing wire 12 one end is connected with wire; ensure that the wire of disconnection can pull bracing wire 12, and then pulls slide block 7 to switch when there is circuit breaking.
See Figure 10, electrical connection signal during the work of this transmission line breaking protection and Emergency power supply unit, when transmission line broken string and Emergency power supply unit are applied in circuit, two lines and emergency service is protected for a siding at this, four, device side binding post 7-5, 7-6, 7-7, 7-8 is connected between two, the power transmission line 17 that upstream normally uses is connected with that binding post 7-2 of the close dividing plate 19 of this side, power transmission line place of device opposite side, the binding post 7-1 away from dividing plate 19 be connected with the power transmission line normally used connects the top binding post 11-1 of second line protection and Emergency power supply unit, the siding 18-1 that the below binding post 11-2 of second line protection and Emergency power supply unit is arranged side by side with this power transmission line normally used is connected.Because device is plane of symmetry full symmetric with dividing plate 19, so opposite side repeats no more.Equally; four, the side binding post 7-5 of second line protection and Emergency power supply unit; 7-6; 7-7; 7-8 is connected between two; the connections mode of opposite side is identical with the mode of connection of first line protection and Emergency power supply unit; be the upper binding post 11-1 that its binding post 7-1 away from dividing plate 19 near normal transmission line connects first line protection and Emergency power supply unit equally, the lower binding post 11-2 of first line protection and Emergency power supply unit connects power transmission line 18-1 for subsequent use.Equally; if when protecting many simultaneously; second line protection and Emergency power supply unit is connected for first line protection and Emergency power supply unit; as long as the lower binding post of second line protection and Emergency power supply unit connects the upper binding post 11-1 of the 3rd line protection and Emergency power supply unit; the lower binding post of the 3rd device connects binding post 11-1 on the 4th device again, and to the last the lower binding post 11-2 of a device connects siding.
For first line protection and Emergency power supply unit; when circuit is normal; upstream electrical flows through the binding post 7-2 of this wire side near dividing plate 19; connecting rod 14; the opposite side binding post 7-6 contacted with connecting rod 14; the binding post 7-7 of dividing plate 19 opposite side, connecting rod 14 is transferred to downstream line.When the circuit breaking that first line protection and Emergency power supply unit are protected; because circuit breaking falls; pull bracing wire 12; slide block 7 is slided; connecting rod 14 is made to slide into that side away from dividing plate 19; corresponding two the binding post 7-1 of conducting; 7-5; if All other routes do not break; then electric current is reached downstream by from siding 18-1; the line protection of upstream and Emergency power supply unit make slide block 7 move because of broken string equally, make that binding post and connecting rod 14 conducting of connection siding, and then keep apart the circuit broken down.If there are two circuits to break in a circuit simultaneously; due to series connection mutually in the middle of line protection and Emergency power supply unit, when slide block 7 moves and upper and lower binding post 11 disconnect, and then electric current cannot pass to siding; just faulty line is de-energized, and prevents short circuit.Meanwhile, siding is segmented, prevents multiposition in circuit from breaking down simultaneously and causes short circuit.
The above is only one embodiment of the present invention; should be understood that; for field, place of the present invention those of ordinary skill under the premise without departing from the principles of the invention; a lot of remodeling can also be made; such as, the shape of connecting rod is changed, the connected mode of slide block and bracing wire or elastic drag rope; the profile etc. of binding post, these also should belong to protection scope of the present invention.
Claims (2)
1. transmission line breaking protection and Emergency power supply unit, is characterized in that: be made up of pedestal, side binding post, upper binding post, lower binding post, slide block, connecting rod, elastic drag rope, bracing wire, cover plate; Pedestal is a container-like device, is made up of insulating material, and there is a hole in front, have guide rail in the middle part of both sides and below, there is dividing plate centre, and dividing plate two sides has a fixed leg respectively, pedestal take dividing plate as plane of symmetry full symmetric, and the hole in pedestal front is used for bracing wire and passes; The guide rail of two sides is symmetrical, and there is semicircle resettlement groove at the two ends, left and right of guide rail, and semicircle resettlement groove is used for laying side binding post, porose in semicircle resettlement groove, wiring pin for side binding post stretches out, and the centre of side guide is chute, for connecting rod in interior slip; Under pedestal, square guide rail is used for the slip of slide block, and play the guiding role, lower square guide rail has a placement hole near one end of dividing plate, for the arrangement of lower binding post; Binding post on dividing plate is used for being connected with elastic drag rope.
2. transmission line breaking protection as claimed in claim 1 and Emergency power supply unit; it is characterized in that: side binding post is the profile shape corresponding with the resettlement groove of pedestal side guide; external arc is corresponding with resettlement groove; Inner arc is corresponding with connecting rod; side binding post is made up of electric conducting material; binding post there is a wiring pin stretch out, be electrically connected for pedestal and outside.
3. transmission line breaking protection as claimed in claim 1 and Emergency power supply unit, is characterized in that: respectively there is a binding post front and back of slide block, middle porose, respectively has a breach up and down, be made up of electric conducting material; Slide block front binding post is used for connecting stay wire, and rear binding post is for connecting elastic drag rope, and middle hole is for installing connecting rod, and upper and lower breach is used for matching with upper and lower binding post.
4. transmission line breaking protection as claimed in claim 1 and Emergency power supply unit, is characterized in that: connecting rod is a bar-shaped part, is made up of electric conducting material, middle coating insulation material, itself and slide block insulated.
5. transmission line breaking protection as claimed in claim 1 and Emergency power supply unit; it is characterized in that: upper binding post is identical with lower binding post profile; be made up of electric conducting material; be installed in the corresponding resettlement groove of base and cover plate; side and shoe contact, opposite side stretches out pedestal and outside is electrically connected.
6. transmission line breaking protection as claimed in claim 1 and Emergency power supply unit; it is characterized in that: there is guide rail cover plate side; identical with square guide rail under pedestal; upper binding post resettlement groove is had in guide rail; coordinate with pedestal; cover above pedestal, cover plate guide rail coordinates guide shoe to slide in guide rail with square guide rail under pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310161737.7A CN103219682B (en) | 2013-05-06 | 2013-05-06 | Power transmission line disconnection protection and emergency power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310161737.7A CN103219682B (en) | 2013-05-06 | 2013-05-06 | Power transmission line disconnection protection and emergency power supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103219682A CN103219682A (en) | 2013-07-24 |
| CN103219682B true CN103219682B (en) | 2015-07-08 |
Family
ID=48817268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310161737.7A Expired - Fee Related CN103219682B (en) | 2013-05-06 | 2013-05-06 | Power transmission line disconnection protection and emergency power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103219682B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958416B (en) * | 2016-05-18 | 2017-09-15 | 洪东科 | Break from the power transmission line fixing device that comes off |
| CN105932631B (en) * | 2016-05-18 | 2017-09-29 | 吴秦 | Safety-type high voltage transmission line system |
| CN112366631B (en) * | 2020-10-30 | 2022-08-23 | 东至县健茂贸易有限公司 | Electric power transmission frame capable of carrying out emergency circuit breaking |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2270673A1 (en) * | 2004-10-29 | 2007-04-01 | Administrador De Infraestructuras Ferroviarias (Adif) | Emergency brake system for compensation pulley of railroad cable has actuating subgroup having tongue pieces for signaling condition of activated subgroups |
| CN200956523Y (en) * | 2006-09-08 | 2007-10-03 | 新巨企业股份有限公司 | Fully-extracting combined standby electric power system |
| CN103001312A (en) * | 2012-12-25 | 2013-03-27 | 无锡应达工业有限公司 | Quick switching device of duplicate power supply |
| CN203289176U (en) * | 2013-05-06 | 2013-11-13 | 丁云广 | Transmission line disconnection protection and emergency power supply device |
-
2013
- 2013-05-06 CN CN201310161737.7A patent/CN103219682B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2270673A1 (en) * | 2004-10-29 | 2007-04-01 | Administrador De Infraestructuras Ferroviarias (Adif) | Emergency brake system for compensation pulley of railroad cable has actuating subgroup having tongue pieces for signaling condition of activated subgroups |
| CN200956523Y (en) * | 2006-09-08 | 2007-10-03 | 新巨企业股份有限公司 | Fully-extracting combined standby electric power system |
| CN103001312A (en) * | 2012-12-25 | 2013-03-27 | 无锡应达工业有限公司 | Quick switching device of duplicate power supply |
| CN203289176U (en) * | 2013-05-06 | 2013-11-13 | 丁云广 | Transmission line disconnection protection and emergency power supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103219682A (en) | 2013-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103424588B (en) | Electric energy meter connection terminal kit | |
| CN202562967U (en) | Rapid wiring device and testing system | |
| CN103219682B (en) | Power transmission line disconnection protection and emergency power supply device | |
| CN202696045U (en) | Tool used for live-line assembling and disassembling of circuit fault indicator | |
| CN215009046U (en) | Electrical protection device of low-voltage switch equipment | |
| CN203289176U (en) | Transmission line disconnection protection and emergency power supply device | |
| CN204597008U (en) | A kind of anti-virtual connection current testing binding post | |
| CN207946467U (en) | A kind of overhead transmission line electroscopic device being easily installed dismounting | |
| CN105097379A (en) | Multi-fuse-link fuse | |
| CN103296497A (en) | Multi-branch wire connecting board | |
| CN202259117U (en) | Outdoor AC high-voltage drop type fuse | |
| CN202307657U (en) | 126 kV outdoor AC high-voltage isolation switch | |
| CN203967526U (en) | A kind of bus-bar system | |
| CN205406767U (en) | Hang device of earth connection on female arranging outside transformer room | |
| CN203260909U (en) | Safe and disassemblable power distribution cabinet body | |
| CN203398351U (en) | Live part verification prompting device for hitched ground wire | |
| CN102946101A (en) | Single-power-supply ring network power supply system | |
| CN202205634U (en) | Novel disconnecting switch contact structure | |
| CN202333748U (en) | Three-phase four-wire null line breakdown protection device | |
| CN105895393A (en) | Isolation switch accessory capable of tensioning relative to contact finger and preventing electrical conduction | |
| CN204029643U (en) | A kind of intelligent double-power diverter switch | |
| CN206132883U (en) | Circuit breaker heating circuit monitoring devices | |
| CN203118849U (en) | Bypass isolation switch | |
| CN205911213U (en) | Isolator of closed condition of detectable | |
| CN203607681U (en) | Electrical equipment cabinet with insulated protection cover added around bus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20160506 |