CN1288811C - Fixed high-voltage switch cubicle - Google Patents
Fixed high-voltage switch cubicle Download PDFInfo
- Publication number
- CN1288811C CN1288811C CN 01119316 CN01119316A CN1288811C CN 1288811 C CN1288811 C CN 1288811C CN 01119316 CN01119316 CN 01119316 CN 01119316 A CN01119316 A CN 01119316A CN 1288811 C CN1288811 C CN 1288811C
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- China
- Prior art keywords
- strip
- plug
- contact
- circuit breaker
- current transformer
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Abstract
The present invention discloses a high voltage switch cabinet used for power distribution, which is mainly composed of a cabinet body with a metal shell and associated assemblies, wherein a busbar, a circuit breaker or a load switch, an upper isolating male contact, a lower isolating male contact, a current transformer, an earthing switch male contact, a lead-in cable or an overhead lead-in line, and a lead-out cable or an overheat lead-out line which are connected according to a main connection return circuit are arranged in the cabinet body; the cabinet body is arranged in groups. The present invention is characterized in that a connection point of a rotating arm of a moving contact and a corresponding fixed contact on the isolating male contact are directly arranged on a connection terminal of the assembly which is connected. The present invention has cabinet structure, small ground occupation, material saving, low cost, convenient maintenance and assembly repair, and is suitable for installation matching or renewed assembly for power equipment.
Description
Technical field
The present invention relates to power distribution, specifically a kind of switch cubicle that is used for the setting of power transmission and distribution switching device.
Background technology
In the electric power system, existing fixed formula high-tension switch cabinet, be by the requirement of main electrical scheme in metal enclosed shell, be concatenated into the main electrical scheme loop by isolating switch, circuit breaker or on-load switch, current transformer, earthed switch and turnover line cable or built on stilts turnover line, with the electric energy inlet highway, or electric energy is exported by bus.As turnover line cabinet commonly used or contact cabinet, general structure all is independently to install two groups of isolating switches and several groups of current transformers in the both sides of circuit breaker or on-load switch, satisfies the requirement that control, protection and safety are isolated with this.And do not go to consider the volume size issue.Because pile crown is independent between each components and parts, so the overall dimension of switch cubicle is big, floor space is also big, coloured, the ferrous metal and the insulating material of consumption are also just many.
JGN-35 (F) the type fixed high-voltage switch cubicle that domestic certain company produces, rated current 1600A, specified switching current 31.5KT, the single busbar connection switch cubicle is of a size of 1.8 * 3.6 * 3.8=24.6M during the adapted vacuum circuit-breaker
3
Summary of the invention
The objective of the invention is to provide a kind of size little, in light weight, black, non-ferrous metal and insulating material consumption are few, and floor space is few, the fixed high-voltage switch cubicle of compact conformation.
Structural design of the present invention is based on following consideration: under the prerequisite that satisfies the requirement of downlink or uplink main electrical scheme, outlet terminal with circuit breaker or on-load switch arc control device, outlet terminal on current transformer and the post insulator, be provided with as the pivoted arm contact or the stationary contact headstock of isolating the plug-in strip moving contact respectively, by to the binding post of circuit breaker or on-load switch, current transformer, supporting insulator and isolation plug-in strip as connect, the contact is multiplexing or use mutually, reaches the purpose of simplified structure.
The fixed high-voltage switch cubicle that the present invention provides, comprise casing with metal shell, be connected and installed with main bus bar by the main electrical scheme loop in the casing, circuit breaker or on-load switch, upper and lower isolation plug-in strip, current transformer, earthed switch plug-in strip, turnover line cable or built on stilts turnover line, casing is provided with in groups, it is characterized in that: the pivoted arm contact and the corresponding stationary contact headstock of isolating moving contact on the plug-in strip are set directly on the binding post that is connected assembly in the series via, described isolation plug-in strip and the binding post that is connected assembly as connect, the contact is multiplexing or use mutually.
Two binding posts of the arc control device of described circuit breaker or on-load switch directly are made as the pivoted arm contact that connects upper and lower isolation plug-in strip moving contact; Binding post on the current transformer and support binding post on the post insulator of bus directly is set to the stationary contact headstock corresponding with the moving contact of upper and lower isolation plug-in strip.
A binding post on the current transformer is connected with turnover line cable or built on stilts turnover line, and the stationary contact headstock of this wiring point double as earthed switch plug-in strip.
Described going up on isolation plug-in strip and the following isolation plug-in strip is respectively equipped with a metallic operation connecting lever, and its fixed pivot is located on the inner wall of circuit breaker or on-load switch opposite one side box body.
On two sidewalls of described casing, and be positioned at the lower portion of main bus bar, be provided with two slots of isolating the metal that plate uses as safety inspection plant ground connection.
Described current transformer is arranged on the top of suspension type circuit breaker or on-load switch.
The design that the present invention utilizes binding post to use mutually as contact base meets between 2 with the shortest axiom of air line distance, so its structure can access and simplify and significantly reduce size, effectively reduces the raw-material consumption of structure.The setting that its ground connection is isolated plate then provides the condition that makes things convenient for for Maintenance and Repair.
Join the product of vacuum circuit-breaker with above-mentioned same specification and compare, the adapted rated current still is 1600A, and specified switching current 31.5KA is constant, the technology of the present invention organization plan specifically be of a size of 1.4 * 2.8 * 1.8 ≈ 7M
3
Description of drawings
Be described further below in conjunction with embodiment and accompanying drawing thereof:
Fig. 1 is a single-pole switch cabinet schematic diagram of the present invention.
Fig. 2 is the configuration state figure that is in when opening circuit maintenance.
Fig. 3 is two of embodiments of the invention.
Embodiment
Referring to accompanying drawing.High-tension switch cabinet of the present invention as shown in Figure 1, it arranges the arrangement mode simultaneous of a utmost point to be provided with every cabinet.By opening the top view of cabinet door, can see all that the structure in the diagram bin is provided with content.In order to realize from high voltage bus and plug-in strip, circuit breaker, connect to break-make between cable turnover line, the requirement of the electric insulation of conformance with standard defined be must guarantee in each utmost point casing between each assembly and contact, the power-frequency withstand voltage and the impulse withstand voltage of correspondent voltage grade guaranteed to bear.
Therefore, as long as can form the safety return circuit of downlink or uplink by the main electrical scheme requirement, the compound mode of circuit breaker in the diagram cabinet or on-load switch, isolating switch, post insulator summation current transformer allows different the variation.In the casing 1 shown in Figure 1, isolate plug-in strip and be in "on" position.Two insulating sleeves 13 were being supported main bus bar 3 about top was provided with.Two binding posts on the circuit breaker on right side (or on-load switch) 6 are respectively with the moving contact pivoted arm contact of isolating plug-in strip 4,7 as two groups.The stationary contact headstock J corresponding with last isolation plug-in strip 4
1Be located on the post insulator 2, and electrically connect, be closely linked together with main bus bar 3.7 of following isolation plug-in strips and stationary contact headstock J
2Correspondence, stationary contact headstock J
2It is exactly a binding post of current transformer 9.The metallic operation connecting lever 5 in left side is made operation plug-in strip usefulness, and they are by insulated tension pole, around the pivoted arm contact D at place on the upper and lower outlet terminal of column support type circuit breaker (or on-load switch) 6
1, D
2Rotate, realize that break-make connects.Another binding post on the current transformer is connected with turnover line cable (or built on stilts turnover line) 10.And the stationary contact headstock J of this wiring point double as earthed switch plug-in strip 11
3Earthed switch plug-in strip 11 is connected the pivoted arm contact D of tank wall
3On.12 slots for ground connection isolation plate plant guiding usefulness.So-called turnover line is determined in actual installation, occupation mode or be inlet wire or for outlet.
During work, set circuit breaker (or on-load switch) 6 earlier and be in the separating brake position, manipulation operations connecting lever 5 is rotated in a clockwise direction isolation plug-in strip 4 and isolation plug-in strip fixed contact J respectively
1Intact contact enters "on" position; And following isolation plug-in strip 7, along counterclockwise rotate to current transformer 9 on fixed contact J
2Intact contact also is in "on" position.At this moment, can only could close by controlling organization 8 and close circuit breaker (or on-load switch) 6.Electric energy on the main bus bar 3 (stream) just can be by last isolation plug-in strip 4 → circuit breaker or on-load switch 6 → following isolation plug-in strip 7 → current transformer 9 → cable turnover line 10 → deliver to transformer station of subordinate or user; Perhaps opposite, electric energy (electric current) by cable turnover line 10 → current transformer, 9 → following isolation plug-in strip 7 → circuit breaker or on-load switch → on isolate plug-in strip 4 and deliver to main bus bar 3.
Shown in Figure 2, this device also is provided with at descending main bus bar and does not carry out the isolation ward facility that safety inspection detects under the powering-off state.If must carry out Maintenance and Repair to the electrical installation of other except that bus in the cabinet, at first circuit breaker (or on-load switch) 6 is disconnected by controlling organization 8, make the loop outage; Manipulation operations connecting lever 5 rotations again make the isolation plug-in strip rotate to respectively by insulated tension pole and are in the fully open position, are illustrated gate-dividing state.For guaranteeing safety, cable turnover this moment line (or built on stilts turnover line) 10 also outages in advance.And guarantee circuit breaker in the cabinet or on-load switch, isolating switch all under the situation of separating brake, the earthed switch plug-in strip 11 that closes again, the earthed switch plug-in strip 11 knee-joint point D that rotates
3Rotate, make it fixed contact J with it
3Contact reliably passes in and out line 10 (or built on stilts turnover line) ground connection with cable, has so just got rid of the charged trouble and worry of two ends; The ground connection that will connect earth connection 17 is then isolated plate 14, inserts in the slot 12 of its guiding, and puts in place, contacts with the back plate of switch board housing 1.Set about Maintenance and Repair at last.
Ground connection is isolated plate 14 by two-layer composition up and down, and the upper strata is an insulating barrier 15, can improve ground connection and isolate withstand voltage between plate and the bus; Lower floor reliably is connected with ground wire 17 separately for the metal partion (metp) 16 of conduction.Ground connection is isolated plate 14 switch cubicle is divided into upper and lower two metal cells fully.Charged main bus bar is isolated in the superincumbent cell, and reliable ground protection is arranged below, can guarantee maintainer's safety inspection, debugging.Before need sending electricity, need strictness to detach ground connection earlier and isolate plate 14, the earthed switch plug-in strip 11 of leaving behind by operating sequence, guaranteeing that circuit breaker (or on-load switch) 6 is under the preceding topic of separating brake, close again and isolate plug-in strip 4,7 up and down, close then and close circuit breaker or on-load switch 6, can send.
As shown, the position of some assemblies can change in the casing, for example can be with the position reciprocity of circuit breaker or on-load switch 6 and metallic operation connecting lever 5; The position is set also can changes of current transformer 9.
Embodiment shown in Figure 3 and precedent relatively are provided with general layout and slightly change.Wherein current transformer 9 has moved to the upper right side, is a underslung circuit breaker (or on-load switch) 18 below being right after; The position of lower left current transformer is originally used 3 post insulators 21 instead and is supported, and the stationary contact headstock J of following isolation plug-in strip of conduct simultaneously and earthed switch plug-in strip
2, J
3Overhead outlet 19 is being supported by post insulator 20.Other assembly and connection thereof are identical with precedent.
The operation operating state and the precedent of isolating among the figure after plug-in strip 4,7 closes a floodgate are similar: wherein
When 1, pressing the down direction transmission operation
Electric energy (stream) by main bus bar 3 → on isolate overhead outlet 19 outlet behind the cabinet of the switch cubicle → transformer station of subordinate or the user that branch bus → circuit breaker 6 (or on-load switch) → following isolation plug-in strip 7 → post insulator 20 is supported that be connected of plug-in strip 4 → current transformer 9 → current transformer and circuit breaker 6 (or on-load switch);
When 2, pressing the up direction transmission operation
Electric energy after by the cabinet of switch cubicle built on stilts inlet wire → following isolation plug-in strip → circuit breaker or on-load switch → branch bus → current transformer → on isolate plug-in strip → main bus bar.
Other situation comprises the maintenance of carrying out behind the sub-switching operation, and is all identical with precedent.
Structure technology scheme of the present invention can satisfy cable turnover line, built on stilts turnover line cabinet, about the connection of various main electrical schemes such as contact cabinet, and reach electric index standard-required.
Claims (6)
1, a kind of fixed high-voltage switch cubicle, comprise casing (1) with metal shell, by the attaching of main electrical scheme loop main bus bar (3) is arranged in the casing (1), circuit breaker or on-load switch (6), upper and lower isolation plug-in strip (4,7), current transformer (9), earthed switch plug-in strip (11), turnover line cable or built on stilts turnover line (10); Casing is provided with in groups, it is characterized in that: the pivoted arm contact (D that isolates plug-in strip moving contact arm
1, D
2, D
3) and corresponding stationary contact headstock (J
1, J
2, J
3) be set directly on the binding post that is connected assembly in the series via, described isolation plug-in strip and the binding post that is connected assembly as connect, the contact is multiplexing or use mutually.
2, fixed high-voltage switch cubicle according to claim 1 is characterized in that two binding posts of the arc control device of said circuit breaker or on-load switch (6) directly are provided with the pivoted arm contact (D that connects upper and lower isolation plug-in strip moving contact
1, D
2), binding post on the current transformer and support binding post on the post insulator of bus, directly the setting stationary contact headstock (J corresponding with the moving contact of upper and lower isolation plug-in strip (4,7)
2, J
1).
3, fixed high-voltage switch cubicle according to claim 1, it is characterized in that a binding post on the said current transformer (9) is connected with turnover line cable or built on stilts turnover line, and the stationary contact headstock (J of this wiring point double as earthed switch plug-in strip (11)
3).
4, fixed high-voltage switch cubicle according to claim 1, it is characterized in that said going up is respectively equipped with an operation connecting lever (5) on isolation plug-in strip (4) and the following isolation plug-in strip (7), its fixed pivot is located on the inner wall of circuit breaker or on-load switch (6) opposite casing.
5, fixed high-voltage switch cubicle according to claim 1 is characterized in that on the two side of said metal shell (1), and the lower portion that is positioned at main bus bar (3) is provided with the slot that two ground connection of plant during as safety inspection are isolated the metal that plate uses.
6, fixed high-voltage switch cubicle according to claim 1 is characterized in that said current transformer (9) is arranged on the top of suspension type circuit breaker or on-load switch (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01119316 CN1288811C (en) | 2001-05-28 | 2001-05-28 | Fixed high-voltage switch cubicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01119316 CN1288811C (en) | 2001-05-28 | 2001-05-28 | Fixed high-voltage switch cubicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1388616A CN1388616A (en) | 2003-01-01 |
| CN1288811C true CN1288811C (en) | 2006-12-06 |
Family
ID=4663608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01119316 Expired - Lifetime CN1288811C (en) | 2001-05-28 | 2001-05-28 | Fixed high-voltage switch cubicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1288811C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298397B (en) * | 2016-08-31 | 2018-01-09 | 中国西电电气股份有限公司 | A kind of isolation circuit breakers stacked switch and operating method |
-
2001
- 2001-05-28 CN CN 01119316 patent/CN1288811C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1388616A (en) | 2003-01-01 |
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| 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 | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325011 West District 23, Wenzhou Economic Development Zone, Wenzhou, Zhejiang Patentee after: Zhejiang CHINT Intelligent Electric Co., Ltd. Address before: 325011 West District 23, Wenzhou Economic Development Zone, Wenzhou, Zhejiang Patentee before: Complete Equipment Manufacture Co., Ltd., Zhengtai Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061206 |