CN201219177Y - Low-voltage distribution main konode system - Google Patents
Low-voltage distribution main konode system Download PDFInfo
- Publication number
- CN201219177Y CN201219177Y CNU200820108495XU CN200820108495U CN201219177Y CN 201219177 Y CN201219177 Y CN 201219177Y CN U200820108495X U CNU200820108495X U CN U200820108495XU CN 200820108495 U CN200820108495 U CN 200820108495U CN 201219177 Y CN201219177 Y CN 201219177Y
- Authority
- CN
- China
- Prior art keywords
- busbar
- phase
- bus
- pen
- low
- 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
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to a low-voltage distribution main line system, wherein, A, B, C three-phase bus rows and PEN bus row are installed in two low-voltage bus bridges located at the two ends, one ends of the A, B, C three-phase bus rows and PEN bus row are respectively connected with two transformers, the two transformers are connected to two high-voltage circuit-breakers and simultaneously connected to two outdoor earth terminal boards; the PEN bus row is divided into a PE bus row and an N bus row in the lead-in switch cabinet, the A, B, C three-phase bus rows and PEN bus row are respectively connected to two four-pole circuit breakers installed in the lead-in switch cabinet, and the PE bus row is connected to the indoor ground trunk through the indoor earth terminal; two four-pole circuit breakers are connected to the four-pole circuit breakers installed in the bus switch cabinet, the homo-phase pole of the three four-pole circuit breakers are simultaneously disconnected and closed, and the A, B, C three-phase bus rows and PEN bus row are divided into two sections; the main line system conforms to the TN-C-S standards under failure-free operation and failure operation, and is suitable for power distribution under exploding and fire danger environments.
Description
Technical field
The utility model relates to a kind of low-voltage distribution main junction system.
Background technology
Petroleum chemical enterprise's process units low-voltage distribution system adopts the standby each other supply power mode of double loop dual transformer sectionalized single busbar connection, I, II section service entrance switch and bus connection switch adopt three-pole breaker in the low-voltage complete equipment, the N busbar adopts and connects mode, and the low-voltage distribution main junction system of formation can not meet the requirement of TN-C-S standard.
The utility model content
The purpose of this utility model be design a kind of in low-voltage complete equipment I, II section service entrance switch and bus connection switch adopt four-pole circuit breaker, N row enters one disjunction of the circuit breaker homophase utmost point and closure; I, II section N busbar adopt segmentation wiring mounting means; The low-voltage distribution main junction system that the N busbar is identical with PE busbar specification.
Low-voltage distribution main junction described in the utility model system is made of low-voltage bus bar bridge, four-pole circuit breaker, PEN busbar, PE busbar, N busbar, A, B, C three-phase phase busbar, transformer and primary cut-out; Two low-voltage bus bar bridges that are positioned at two ends are installed A, B, C three-phase phase busbar, PEN busbar, A, B, C three-phase phase busbar, PEN busbar one end are connected with two transformers respectively, two transformers are connected with two primary cut-outs, are connected with two outdoor earth terminal daughter boards simultaneously; The PEN busbar is split up into PE busbar and N busbar in the service entrance switch cabinet, the other end of A, B, C three-phase phase busbar and N busbar respectively be installed in the service entrance switch cabinet in two four-pole circuit breakers be connected, the PE busbar is connected with indoor ground connection main line by indoor earth terminal; Two four-pole circuit breakers are connected with four-pole circuit breakers in being installed in the bus connection switch cabinet, and three four-pole circuit breaker homophase utmost point while disjunctions and closure are divided into two sections with A, B, C three-phase phase busbar and N busbar.
The utility model I, II section service entrance switch and bus connection switch in low-voltage complete equipment adopt four-pole circuit breaker, and N row enters disjunction simultaneously of the circuit breaker homophase utmost point and closure; I, II section N busbar adopt segmentation wiring mounting means; The low-voltage distribution main junction mode that the N busbar is identical with PE busbar specification.This low-voltage distribution main junction system all meets the requirement of TN-C-S standard under normal operating mode and abnormal running mode, be applicable to the confession distribution demand of blast and fire hazard environment.
Description of drawings
Fig. 1 low-voltage distribution main junction system.
Wherein: 1, outdoor earth terminal daughter board 2, primary cut-out 3, transformer 4, low-voltage bus bar bridge 5, service entrance switch cabinet 6, bus connection switch cabinet 7, service entrance switch cabinet 8, low-voltage bus bar bridge 9, transformer 10, primary cut-out 11, outdoor earth terminal daughter board 12, indoor earth terminal 13, indoor ground connection main line 14, indoor earth terminal
Embodiment
With reference to the accompanying drawings low-voltage distribution main junction system configuration described in the utility model is illustrated below.
Low-voltage distribution main junction described in the utility model system is made of low-voltage bus bar bridge, four-pole circuit breaker, PEN busbar, PE busbar, N busbar, A, B, C three-phase phase busbar, transformer and primary cut-out; Two the low-voltage bus bar bridges 4,8 that are positioned at two ends are installed A, B, C three-phase phase busbar, PE and the shared busbar of N, A, B, C three-phase phase busbar, PE and shared busbar one end of N are connected with two transformers 3,9 respectively, two transformers are connected with two primary cut- outs 2,10, are connected with two outdoor earth terminal daughter boards 1,11 simultaneously; The PEN busbar is split up into PE busbar and N busbar in service entrance switch cabinet 5,7, the other end of A, B, C three-phase phase busbar and N busbar respectively be installed in service entrance switch cabinet 5,7 in two four-pole circuit breaker QF1, QF2 is connected, the PE busbar passes through indoor earth terminal 12,14 and is connected with indoor ground connection main line 13; Two four-pole circuit breakers are connected with four-pole circuit breaker QF3 in being installed in bus connection switch cabinet 6, and three four-pole circuit breaker homophase utmost point while disjunctions and closure are divided into two sections with A, B, C three-phase phase busbar and N busbar; The N busbar is identical with PE busbar specification.
Available four-pole circuit breaker specifications and models:
Changshu Switch Factory: CW1-2000/4P; CW1-3200/4P; CW1-4000/4P; CW1-5000/4P
ABB Xiamen: SACE E4 (E4/f) S 25; SACE E4 (E4/f) S 32.
Claims (1)
1. a low-voltage distribution main junction system is made of low-voltage bus bar bridge, four-pole circuit breaker, PEN busbar, PE busbar, N busbar, A, B, C three-phase phase busbar, transformer and primary cut-out; It is characterized in that: two low-voltage bus bar bridges that are positioned at two ends are installed A, B, C three-phase phase busbar, PEN busbar, A, B, C three-phase phase busbar, PEN busbar one end are connected with two transformers respectively, two transformers are connected with two primary cut-outs, are connected with two outdoor earth terminal daughter boards simultaneously; The PEN busbar is split up into PE busbar and N busbar in the service entrance switch cabinet, the other end of A, B, C three-phase phase busbar and N busbar respectively be installed in the service entrance switch cabinet in two four-pole circuit breakers be connected, the PE busbar is connected with indoor ground connection main line by indoor earth terminal; Two four-pole circuit breakers are connected with four-pole circuit breakers in being installed in the bus connection switch cabinet, and three four-pole circuit breaker homophase utmost point while disjunctions and closure are divided into two sections with A, B, C three-phase phase busbar and N busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820108495XU CN201219177Y (en) | 2008-06-11 | 2008-06-11 | Low-voltage distribution main konode system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820108495XU CN201219177Y (en) | 2008-06-11 | 2008-06-11 | Low-voltage distribution main konode system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201219177Y true CN201219177Y (en) | 2009-04-08 |
Family
ID=40542012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820108495XU Expired - Fee Related CN201219177Y (en) | 2008-06-11 | 2008-06-11 | Low-voltage distribution main konode system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201219177Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888064A (en) * | 2009-12-11 | 2010-11-17 | 成都高新区尼玛电子产品外观设计工作室 | Transformer substation main connection system based on medium frequency quenching transformer |
| CN103326248A (en) * | 2013-05-29 | 2013-09-25 | 安徽永川电器设备有限公司 | Switch cabinet with alternating current contactor protection device arranged inside |
| CN104218457A (en) * | 2014-09-28 | 2014-12-17 | 国家电网公司 | Power distribution device and electric master system thereof |
| CN105742836A (en) * | 2016-03-16 | 2016-07-06 | 国网天津宝坻供电有限公司 | Grounding method of power distribution room |
-
2008
- 2008-06-11 CN CNU200820108495XU patent/CN201219177Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888064A (en) * | 2009-12-11 | 2010-11-17 | 成都高新区尼玛电子产品外观设计工作室 | Transformer substation main connection system based on medium frequency quenching transformer |
| CN103326248A (en) * | 2013-05-29 | 2013-09-25 | 安徽永川电器设备有限公司 | Switch cabinet with alternating current contactor protection device arranged inside |
| CN103326248B (en) * | 2013-05-29 | 2015-12-23 | 安徽永川电器设备有限公司 | A kind of switch cubicle of built-in A.C. contactor protective device |
| CN104218457A (en) * | 2014-09-28 | 2014-12-17 | 国家电网公司 | Power distribution device and electric master system thereof |
| CN105742836A (en) * | 2016-03-16 | 2016-07-06 | 国网天津宝坻供电有限公司 | Grounding method of power distribution room |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2755350A1 (en) | New autotransformer traction power supply system equipped with 2x27.5kv outdoor modularized electric apparatus in electrified railway | |
| CN103368081A (en) | Main electrical connection of double-bus disconnecting link section | |
| CN201219177Y (en) | Low-voltage distribution main konode system | |
| CN204732777U (en) | A kind of cable line uninterrupted operation system | |
| CN103151754A (en) | Method and device for connecting inlet wire and outlet wire of low-voltage cable branch box | |
| CN204835226U (en) | Line arrangement structure of two complete clusters is joined in marriage into in wiring of one and half circuit breakers | |
| CN203251008U (en) | Solid insulation switch cabinet | |
| CN201674150U (en) | Cordwood system intelligent ring network cabinet | |
| CN102946101A (en) | Single-power-supply ring network power supply system | |
| CN204290066U (en) | Low-voltage comprehensive distribution box wiring system | |
| CN103904625B (en) | A kind of protection act method of branch line | |
| CN209948370U (en) | Bypass node type PT cabinet | |
| CN204230846U (en) | A kind of low-voltage cable junction box wiring system | |
| CN208093426U (en) | A kind of interlock of outdoor vacuum circuit breaker | |
| RU117732U1 (en) | HIGH VOLTAGE DISTRIBUTION DEVICE | |
| CN202888832U (en) | Single-power ring network power supply system | |
| CN201868854U (en) | GIS (gas insulated switchgear) structure changing 500KV main power supply into 66KV side power supply | |
| CN206894016U (en) | A kind of modular switch cabinet | |
| CN204905742U (en) | Middling pressure looped netowrk vacuum circuit breaker cabinet | |
| CN100401611C (en) | Four-way power supply equalization switched transformer station wiring method | |
| CN105794059B (en) | Switchgear with bus bar side voltage transformer or arrester | |
| CN204046152U (en) | A kind of zero voltage protection warning circuit | |
| CN203645402U (en) | Intelligent box-type transformer station low voltage control circuit | |
| CN203911251U (en) | Nuclear power plant GIS high-voltage power distribution device with novel line outgoing mode | |
| CN213243554U (en) | Bus wiring structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090408 Termination date: 20170611 |