CN201387994Y - Modular distribution cabinet with grounding knife switch - Google Patents
Modular distribution cabinet with grounding knife switch Download PDFInfo
- Publication number
- CN201387994Y CN201387994Y CN200820181376U CN200820181376U CN201387994Y CN 201387994 Y CN201387994 Y CN 201387994Y CN 200820181376 U CN200820181376 U CN 200820181376U CN 200820181376 U CN200820181376 U CN 200820181376U CN 201387994 Y CN201387994 Y CN 201387994Y
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- distribution cabinet
- switch
- power distribution
- system type
- protection
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Abstract
The utility model relates to a modular distribution cabinet with a grounding knife switch, which has the main technical scheme that the modular distribution cabinet adopts a double modular protection switches and secondary protection structure which comprises a primary general protection loop and a secondary branch production loop. The lower part of the modular distribution cabinet is connected with a double-head isolating switch, the upper end is connected with a low-voltage bus of a transmission line, and the lower end is grounded. After the adoption of the technical scheme that the dual integrated protection is realized, secondary wiring is reduced, the product performance is complete, an air circuit breaker is used as a main switch, the breaking capability is strong, and the breaking time is accurate; a substation grounding knife switch is adopted, the potential safety hazard for installing grounding lines in a low-voltage distribution cabinet is eliminated, the personnel protection effect and the equipment safety are enhanced, and the grounding operation in the operation site is easy, fast and reliable.
Description
Technical field
The utility model belongs to the technical field of low-voltage power supply, relates to the low-voltage distribution apparatus in the low-voltage power supply system.More particularly, the utility model relates to the cordwood system type power distribution cabinet of band ground connection plug-in strip.
Background technology
Low-voltage distribution apparatus is responsible for finishing controlling electric energy, protection, measurement, conversion and distribution in low-voltage power supply system.The various aspects that relate to nation-building and people's lives.The development of its development and national economy, science and technology and living standards of the people is closely related.
Along with the increase of resident living power utility load, more and more higher to the insulating degree requirement of power distribution station, the rural safe electricity consumption level constantly is improved.In the prior art, low-voltage distribution cabinet is to adopt switch elements such as air switch, A.C. contactor, earth leakage protective device.Secondary line wiring complexity, and can influence circuit because of loose contact, maintenance is trouble comparatively.And safety precautions is relatively poor.
The application of low-voltage circuit insulated conductor in the power distribution station is also more and more extensive, if insulated conductor is not installed electricity testing grounding ring or destroyed wire insulation, earth connection can't be installed, and maintenance has caused great difficulty to low-voltage circuit.At present, when the low-voltage insulation circuit that electricity testing grounding ring is not installed need change maintenance, operational grounding generally was to draw back A.C. contactor in low-voltage distribution cabinet, take off the three-phase fusion tube, then pile crown position installing earth connection under fuse.
Summary of the invention
The cordwood system type power distribution cabinet of the band ground connection plug-in strip that the utility model provides its objective is the electric wiring of simplifying power distribution cabinet, and improves its processing safety.
To achieve these goals, the utility model has been taked following technical scheme:
The cordwood system type power distribution cabinet of this band ground connection plug-in strip provided by the utility model; adopt the structure of dual cordwood system type protection switch, second class protection, comprise that one-level is always protected, secondary branch protection loop, connect the double end isolating switch down; upper end connection electric transmission line low-voltage bus bar, lower end ground connection.
Adopting the cordwood system type switch of the repertoire that integrates zero-sequence transformer, leakage relay, A.C. contactor, air circuit in the described power distribution cabinet, is main switch with the air circuit.
Adopt the substation grounding plug-in strip in the described power distribution cabinet.
In the described power distribution cabinet, the inlet wire current instrument transformer is connected with ammeter, and voltmeter connects conversion switch serial connection fuse and taps into the line three phase mains; Three-phase four-wire power connects one-level cordwood system type protection switch through disconnecting link, is divided into three the road or four the tunnel, connects secondary cordwood system type protection switch; Outlet termination lightning arrester, and connect indicator light, double end isolating switch.
Adopted the beneficial effect of above-mentioned technical scheme to be: in safeguard protection, adopt dual integrated protection, secondary connection reduces, and properties of product are more perfect; Having adopted the cordwood system type switch of the repertoire that integrates zero-sequence transformer, leakage relay, A.C. contactor, air circuit, is main switch with the air circuit, and breaking capacity is big, and break-time is accurate; Performance is reliable, misoperation is few, stable, not power consumption; Have the deferred action characteristic, can not overstep tripping; Have perfect defencive functions such as residual current protecting, overload protection, short-circuit protection, phase shortage under-voltage protection, disconnected zero protection, reclosing; The digital display form has real-time demonstration, tripping operation demonstration, button Presentation Function, energy is the residual electricity flow valuve and the maximal phase of circuit in real time, at present operating current value gear shows it is what reason tripping operation during tripping operation, the residual electricity flow valuve when that causes tripping operation reaches tripping operation mutually; Can show total tripping operation number of times and locking number of times; Wiring four is advanced four and is gone out, and the multistage fixedly stepping of residual current acting value is adjustable, easy to use, and has reduced secondary connection; Introduce the substation grounding plug-in strip; make low-voltage distribution cabinet possess ground connection plug-in strip function; promptly earth point is set up in the outlet in low-voltage distribution cabinet; and, plug-in strip is serially connected between low pressure outlet and the ground connection by being installed; utilization realizes the line maintenance state to the operation of this plug-in strip; eliminate the potential safety hazard of installing earth connection in the low-voltage distribution cabinet, improved personnel's protectiveness, the fail safe of equipment on the one hand, impel operation field ground connection simple to operate, quick, reliable on the other hand.
Description of drawings
Be brief description below to this Figure of description:
Fig. 1 is a circuit diagram of the present utility model.
Be labeled as among the figure:
1, inlet wire current instrument transformer, 2, ammeter, 3, voltmeter, 4, change over switch, 5, fuse, 6, disconnecting link, 7, one-level cordwood system type protection switch, 8, secondary cordwood system type protection switch, 9, lightning arrester, 10, indicator light, 11, the double end isolating switch.
Embodiment
Below in conjunction with accompanying drawing, relevant particular contents such as structure of the present utility model, effect, operation principle are elaborated:
As shown in Figure 1, in the power distribution cabinet described in the utility model, inlet wire current instrument transformer 1 is connected with ammeter 2, and voltmeter 3 connects conversion switch 4 serial connection fuses 5 and taps into the line three phase mains; Three-phase four-wire power connects one-level cordwood system type protection switch 7 through disconnecting link 6, is divided into three the road or four the tunnel, connects secondary cordwood system type protection switch 8; Outlet termination lightning arrester 9, and connect indicator light 10, double end isolating switch 11.
The cordwood system type power distribution cabinet of this band ground connection plug-in strip provided by the utility model; adopt the structure of dual cordwood system type protection switch, second class protection, comprise that one-level is always protected, secondary branch protection loop, connect the double end isolating switch down; upper end connection electric transmission line low-voltage bus bar, lower end ground connection.Adopt dual integrated protection, secondary connection reduces, and properties of product are more perfect.
Adopting the cordwood system type switch of the repertoire that integrates zero-sequence transformer, leakage relay, A.C. contactor, air circuit in the power distribution cabinet described in the utility model, is main switch with the air circuit.Breaking capacity is big, and break-time is accurate; Performance is reliable, misoperation is few, stable, not power consumption; Have the deferred action characteristic, can not overstep tripping; Have perfect defencive functions such as residual current protecting, overload protection, short-circuit protection, phase shortage under-voltage protection, disconnected zero protection, reclosing
Adopt the substation grounding plug-in strip in the power distribution cabinet described in the utility model.Make low-voltage distribution cabinet possess ground connection plug-in strip function; promptly earth point is set up in the outlet in low-voltage distribution cabinet; and, plug-in strip is serially connected between low pressure outlet and the ground connection by being installed; utilization realizes the line maintenance state to the operation of this plug-in strip; eliminate the potential safety hazard of installing earth connection in the low-voltage distribution cabinet; improve personnel's protectiveness, the fail safe of equipment on the one hand, impelled operation field ground connection simple to operate, quick, reliable on the other hand.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection range of the present utility model.
Claims (4)
1, a kind of cordwood system type power distribution cabinet with the ground connection plug-in strip; it is characterized in that: described power distribution cabinet adopts the structure of dual cordwood system type protection switch, second class protection, comprises that one-level is always protected, secondary branch protection loop, connects the double end isolating switch down; upper end connection electric transmission line low-voltage bus bar, lower end ground connection.
2, the cordwood system type power distribution cabinet of band ground connection plug-in strip according to claim 1, it is characterized in that: adopting the cordwood system type switch of the repertoire that integrates zero-sequence transformer, leakage relay, A.C. contactor, air circuit in the described power distribution cabinet, is main switch with the air circuit.
3, the cordwood system type power distribution cabinet of band ground connection plug-in strip according to claim 1 and 2 is characterized in that: adopt the substation grounding plug-in strip in the described power distribution cabinet.
4, the cordwood system type power distribution cabinet of band ground connection plug-in strip according to claim 1 and 2, it is characterized in that: in the described power distribution cabinet, inlet wire current instrument transformer (1) is connected with ammeter (2), and voltmeter (3) connects conversion switch (4) serial connection fuse (5) and taps into the line three phase mains; Three-phase four-wire power connects one-level cordwood system type protection switch (7) through disconnecting link (6), is divided into three the road or four the tunnel, connects secondary cordwood system type protection switch (8); Outlet termination lightning arrester (9), and connect indicator light (10), double end isolating switch (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820181376U CN201387994Y (en) | 2008-12-08 | 2008-12-08 | Modular distribution cabinet with grounding knife switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820181376U CN201387994Y (en) | 2008-12-08 | 2008-12-08 | Modular distribution cabinet with grounding knife switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387994Y true CN201387994Y (en) | 2010-01-20 |
Family
ID=41580536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820181376U Expired - Lifetime CN201387994Y (en) | 2008-12-08 | 2008-12-08 | Modular distribution cabinet with grounding knife switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387994Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001198A (en) * | 2012-12-12 | 2013-03-27 | 邯郸供电公司 | Power box |
| CN104577973A (en) * | 2013-10-16 | 2015-04-29 | 汪龙渊 | Multifunctional electric leakage protection device |
| CN105977858A (en) * | 2016-02-15 | 2016-09-28 | 刘统武 | Intelligent and safe distribution box |
-
2008
- 2008-12-08 CN CN200820181376U patent/CN201387994Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001198A (en) * | 2012-12-12 | 2013-03-27 | 邯郸供电公司 | Power box |
| CN104577973A (en) * | 2013-10-16 | 2015-04-29 | 汪龙渊 | Multifunctional electric leakage protection device |
| CN104577973B (en) * | 2013-10-16 | 2018-10-16 | 汪龙渊 | Multifunctional earth-leakage protective equipment |
| CN105977858A (en) * | 2016-02-15 | 2016-09-28 | 刘统武 | Intelligent and safe distribution box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: STATE GRID ANHUI WUHU POWER SUPPLY CO., LTD. Effective date: 20140528 Owner name: STATE GRID ANHUI WUHU POWER SUPPLY CO., LTD. Effective date: 20140528 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: STATE GRID ANHUI WUHU POWER SUPPLY CO., LTD. Free format text: FORMER NAME: ANHUI ELECTRIC POWER WUHU COUNTY POWER SUPPLY CO., LTD. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 241100 WUHU, ANHUI PROVINCE TO: 100031 XICHENG, BEIJING |
|
| CP03 | Change of name, title or address |
Address after: 241100 No. 1 Wuhu North Road, Wuhu County, Anhui Province Patentee after: STATE GRID ANHUI WUHU COUNTY POWER SUPPLY CO.,LTD. Address before: 241100 No. 1 Wuhu North Road, Wuhu County, Wuhu, Anhui Patentee before: Anhui Electric Power Wuhu County Power Supply Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140528 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: STATE GRID ANHUI WUHU COUNTY POWER SUPPLY CO.,LTD. Address before: 241100 No. 1 Wuhu North Road, Wuhu County, Anhui Province Patentee before: STATE GRID ANHUI WUHU COUNTY POWER SUPPLY CO.,LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100120 |
|
| CX01 | Expiry of patent term |