CN2636462Y - Leakage and electric shock protection distribution cabinet - Google Patents
Leakage and electric shock protection distribution cabinet Download PDFInfo
- Publication number
- CN2636462Y CN2636462Y CN 03254834 CN03254834U CN2636462Y CN 2636462 Y CN2636462 Y CN 2636462Y CN 03254834 CN03254834 CN 03254834 CN 03254834 U CN03254834 U CN 03254834U CN 2636462 Y CN2636462 Y CN 2636462Y
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- cabinet
- circuit breaker
- current circuit
- residual current
- milliamperes
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Abstract
The utility model relates to a distribution cabinet with secondary electric leakage and shock protection, which comprises a cabinet 1, a panel 2 on an obverse face of the cabinet 1, a cabinet door 4 arranged in an middle and lower part of the cabinet 1, a knife switch 3 positioned on an upper part of the cabinet 1, a secondary electric leakage circuit breaker 5 arranged on a lower part of the knife switch 3 and electrically connected with the knife switch 3, a three-phase bus-bar positioned on a lower part of the second electric leakage circuit breaker 5 and fixed by insulators on both sides of the cabinet 1, a terminal leakage circuit breaker unit 7 connected with a lower part of the three-phase bus-bar and arranged on a lower part of the cabinet 1. The utility model arranges a secondary electric leakage circuit breaker 5 and a terminal leakage circuit breaker 7 into a distribution cabinet, thus realizing centralized power supply and distribution of power facilities. Cascade protection against electric leakage and shock increases electric leakage and shock protective scope, enhances safety and reliability and ensures easy failure detection and convenient mounting and maintenance.
Description
Affiliated technical field
The utility model relates to a kind of power distribution cabinet for the distribution use, particularly a kind of power distribution cabinet with the leak shock protection.
Background technology
What present domestic industrial and mining enterprises low pressure (exchanging 380/220V) electric distribution cabinet extensively adopted is the serial power distribution cabinet that 6～8 loop outputs were protected, had to fuse protection or automatic switch; do not have the leak shock defencive function, thereby all the electricity consumption facilities in its supply district are not possessed electric leakage, electrical shock protection measure.Earth leakage circuit-breaker (steelyard slepsydra electrical circuit breakers again) is the effective and safe device that prevents and protect the direct electric shock accidents of the person at present and cause personal indirect electric shock accidents because of the equipment electric leakage.Because leakage switch not only has sensitive leak shock defencive function, also combine the defencive functions such as overload, short circuit of automatic switch, thereby can directly replace automatic switch and be used for the neutral ground low voltage electric network.Earth leakage circuit-breaker generally uses as the unit separate unit, also the earth leakage protective distribution box of the characteristics design of the self structure of with good grounds earth leakage circuit-breaker and unit control.Application number is that 88214715.3 Chinese patent discloses a kind of like this earth leakage protective power distributing cabinet; busbar of being used by casing, case lid, inlet wire and busbar seat, three-phase level Four automatic switch of electric leakage, three-phase automatic switch of electric leakage, the insulation board that automatic switch of electric leakage is installed and mount pad etc. are partly formed.This earth leakage protective power distributing cabinet has only adopted the one-level earth leakage circuit-breaker to be arranged in parallel, and its leak shock protection range is less, and security reliability is poor, does not have backup protection.When earth leakage circuit-breaker breaks down and not replacing in time, in case taking place, the person gets an electric shock or equipment electric leakage accident, then can't obtain the effective and safe protection.
Summary of the invention
The purpose of this utility model provides a kind of power distribution cabinet with secondary leak shock defencive function, to solve the deficiencies in the prior art.
Technical solution of the present utility model is: leak shock protection power distribution cabinet; a cabinet is arranged; front at cabinet; top is provided with panel; the middle and lower part has the cabinet door; in cabinet; its top is provided with knife switch; the handle of knife switch is installed on the panel, and the bottom of knife switch is provided with a second class protection residual current circuit breaker, is electrically connected with knife switch; the bottom of second class protection residual current circuit breaker is connected to three-phase bus bar; three-phase bus bar is fixed by the insulator of cabinet both sides, and the bottom of three-phase bus bar is connected to terminal residual current circuit breaker group, and terminal residual current circuit breaker group is installed in the bottom of cabinet; terminal residual current circuit breaker group can be according to the situation of on-the-spot electricity consumption facility; 4～10 terminal residual current circuit breaker are set, and parallel side by side is arranged, is formed 4～10 loops.
The beneficial effects of the utility model are: this leak shock protection power distribution cabinet; second class protection residual current circuit breaker and terminal residual current circuit breaker group are installed in the power distribution cabinet of existing approved product; make existing power distribution cabinet have secondary leak shock defencive function, can realize the concentrated of electricity consumption facility for distribution.This leak shock protection power distribution cabinet has adopted the cascade protection of leak shock; when terminal residual current circuit breaker breaks down and in time during trip protection; by the second class protection residual current circuit breaker electricity consumption facility is carried out the leak shock protection; the leak shock protection range is increased; security reliability strengthens; fault detect is easy, and is convenient for installation and maintenance.
Description of drawings
This leak shock of Fig. 1 protection power distribution cabinet front view at closing time
Front view when this leak shock of Fig. 2 protection power distribution cabinet opens the door
The wiring schematic diagram of this leak shock of Fig. 3 protection power distribution cabinet
1. cabinets among the figure, 2. panel, 3. knife switch, 4. cabinet door, 5. second class protection residual current circuit breaker, 6. three-phase bus bar, 7. terminal residual current circuit breaker group, 8. insulation barrier.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Leak shock protection power distribution cabinet; a cabinet 1 is arranged; front at cabinet 1; top is provided with panel 2; the middle and lower part has cabinet door 4; in cabinet 1; its top is provided with knife switch 3; the handle of knife switch 3 is installed on the panel 2, and the bottom of knife switch 3 is provided with a second class protection residual current circuit breaker 5, is electrically connected with knife switch 3; the bottom of second class protection residual current circuit breaker 5 is connected to three-phase bus bar 6; three-phase bus bar 6 is fixed by the insulator of cabinet 1 both sides, and the bottom of three-phase bus bar 6 is connected to terminal residual current circuit breaker group 7, and terminal residual current circuit breaker group 7 is installed in the bottom of cabinet 1.
The total input-wire of power distribution cabinet is through behind the knife switch 3; through second class protection residual current circuit breaker 5,, connect with the terminal residual current circuit breaker group 7 that parallel side by side is arranged again by three-phase bus bar 6; in order to ensure operating personnel's Electrical Safety, insulation barrier 8 is set in the front of three-phase bus bar 6.Terminal residual current circuit breaker group 7 is made up of 4～10 residual current circuit breaker, can form 4～10 loops, and the electricity consumption facility can directly be connected on the terminal residual current circuit breaker, also can be by connecting terminal block and the connection of terminal residual current circuit breaker.
, the person carries out safe leak shock protection, the residual operating current I of each terminal residual current circuit breaker for being got an electric shock
E1Scope be 30 milliamperes＜I
E1＜50 milliamperes or 30 milliamperes＜I
E1＜100 milliamperes, electric leakage t operate time
1＜0.1 second.Second class protection residual current circuit breaker 5 can further ensure the leak shock security performance of electricity consumption facility; when certain terminal residual current circuit breaker breaks down; and when not playing the leak shock protective effect; finish the leak shock backup protection of electricity consumption facility by the second class protection residual current circuit breaker, improved the security reliability of electricity consumption facility.Every terminal residual current circuit breaker is given a loop power supply, can make the repair and maintenance personnel when this loop electricity consumption facility of maintenance, only stops this ring current, does not influence the normal former commentaries on classics of other loop electricity consumption facilities, has brought convenience for the Maintenance and Repair of equipment.
Terminal residual current circuit breaker group 7 is a first class of protection, and second class protection residual current circuit breaker 5 is a second class protection, and the two-stage protection switch is a series relationship, for preventing to cause overstep tripping or tripping operation simultaneously, must coordinate the electric leakage action relationships of two-stage protection switch.Thereby second class protection residual current circuit breaker 5 adopts time lagged type, its electric leakage t operate time
2Scope be 0.1 second≤t
2＜0.2 second.Terminal residual current circuit breaker group 7 is selected residual operating current I for use
E1Scope be 30 milliamperes＜I
E1The residual operating current I that＜50 MAHs, second class protection residual current circuit breaker 5 are selected for use
E2Scope be 50 milliamperes≤I
E2＜100 milliamperes.Terminal residual current circuit breaker group 7 is selected residual operating current I for use
E1Scope be 30 milliamperes＜I
E1The residual operating current I that＜100 MAHs, second class protection residual current circuit breaker 5 are selected for use
E2Scope be 100 milliamperes≤I
E2＜200 milliamperes.
Claims (6)
1; leak shock protection power distribution cabinet; a cabinet (1) is arranged; front in cabinet (1); top is provided with panel (2); the middle and lower part has cabinet door (4); in cabinet (1); its top is provided with knife switch (3); the handle of knife switch (3) is installed on the panel (2); it is characterized in that in cabinet (1); the bottom of knife switch (3) is provided with a second class protection residual current circuit breaker (5); be electrically connected with knife switch (3), the bottom of second class protection residual current circuit breaker (5) is connected to three-phase bus bar (6), and three-phase bus bar (6) is fixed by the insulator of cabinet (1) both sides; the bottom of three-phase bus bar (6) is connected to terminal residual current circuit breaker group (7), and terminal residual current circuit breaker group (7) is installed in the bottom of cabinet.
2, leak shock as claimed in claim 1 protection power distribution cabinet is characterized in that terminal residual current circuit breaker group (7) is made of the parallel side by side layout 4～10 residual current circuit breaker.
3, leak shock as claimed in claim 2 is protected power distribution cabinet, it is characterized in that electric leakage t operate time of each residual current circuit breaker of terminal residual current circuit breaker group (7)
1＜0.1 second, residual operating current I
E1Scope be 30 milliamperes＜I
E1＜50 milliamperes or 30 milliamperes＜I
E1＜100 milliamperes.
4, as claim 1,3 described leak shock protection power distribution cabinets, it is characterized in that second class protection residual current circuit breaker (5) is time lagged type, electric leakage t operate time
2Scope be 0.1 second≤t
2＜0.2 second, residual operating current I
E2Scope be 50 milliamperes≤I
E2＜100 milliamperes or 100 milliamperes≤I
E2＜200 milliamperes.
5, as claim 1,2 described leak shock protection power distribution cabinets, it is characterized in that the bottom of residual current circuit breaker group (7) also can be provided with connecting terminal block endways.
6, leak shock protection power distribution cabinet as claimed in claim 1 is characterized in that in the front of three-phase bus bar (6) insulation barrier (8) being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03254834 CN2636462Y (en) | 2003-07-15 | 2003-07-15 | Leakage and electric shock protection distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03254834 CN2636462Y (en) | 2003-07-15 | 2003-07-15 | Leakage and electric shock protection distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2636462Y true CN2636462Y (en) | 2004-08-25 |
Family
ID=34294706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03254834 Expired - Fee Related CN2636462Y (en) | 2003-07-15 | 2003-07-15 | Leakage and electric shock protection distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2636462Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110957A (en) * | 2010-12-24 | 2011-06-29 | 深圳市华通电气设备有限公司 | Operation panel of intelligent distribution board for metro weak current uninterruptible power system (UPS) system |
| CN102938558A (en) * | 2012-11-26 | 2013-02-20 | 保定供电公司 | Low-voltage distribution system with leakage protection device |
| CN103840376A (en) * | 2012-11-21 | 2014-06-04 | 常州江南环境工程有限公司 | Electrical control cabinet wiring distributor in water treatment |
| WO2016115659A1 (en) * | 2015-01-19 | 2016-07-28 | 深圳睿立方智能科技有限公司 | Power distribution unit of smart power distribution cabinet |
| CN107221848A (en) * | 2017-06-29 | 2017-09-29 | 苏州市凯顺电器有限公司 | A kind of antistatic dynamic power distribution cabinet |
-
2003
- 2003-07-15 CN CN 03254834 patent/CN2636462Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110957A (en) * | 2010-12-24 | 2011-06-29 | 深圳市华通电气设备有限公司 | Operation panel of intelligent distribution board for metro weak current uninterruptible power system (UPS) system |
| CN102110957B (en) * | 2010-12-24 | 2013-01-09 | 深圳市华通电气设备有限公司 | Operation panel of intelligent distribution board for metro weak current uninterruptible power system (UPS) system |
| CN103840376A (en) * | 2012-11-21 | 2014-06-04 | 常州江南环境工程有限公司 | Electrical control cabinet wiring distributor in water treatment |
| CN103840376B (en) * | 2012-11-21 | 2016-04-20 | 常州江南环境工程有限公司 | The wiring distributor of electrical control cabinet in water treatment |
| CN102938558A (en) * | 2012-11-26 | 2013-02-20 | 保定供电公司 | Low-voltage distribution system with leakage protection device |
| WO2016115659A1 (en) * | 2015-01-19 | 2016-07-28 | 深圳睿立方智能科技有限公司 | Power distribution unit of smart power distribution cabinet |
| CN107221848A (en) * | 2017-06-29 | 2017-09-29 | 苏州市凯顺电器有限公司 | A kind of antistatic dynamic power distribution cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHONGGANG (GROUP) WUHAN SAFE ENVIRONMENTAL PROTECT Free format text: FORMER NAME: ZHONGGANG (GROUP) WUHAN SAFE ENVIRONMENTAL PROTECTION RESEARCH INSTITUTE Owner name: ZHONGGANG (GROUP) WUHAN SAFE ENVIRONMENTAL PROTECT Free format text: FORMER NAME: WUHAN SAFE + ENVIRONMENTAL PROTECTION RESEARCH INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 430081 No. 1244 Heping Avenue, Qingshan District, Hubei, Wuhan Patentee after: SINOSTEEL CORPORATION WUHAN SAFETY AND ENVIRONMENTAL PROTECTION RESEARCH INSTITUTE Co.,Ltd. Address before: 430081 No. 1244 Heping Avenue, Qingshan District, Hubei, Wuhan Patentee before: Sinosteel Wuhan Safety & Environmental Protection Research Institute Address after: 430081 No. 1244 Heping Avenue, Qingshan District, Hubei, Wuhan Patentee after: Sinosteel Wuhan Safety & Environmental Protection Research Institute Address before: 430081 No. 1244 Heping Avenue, Qingshan District, Hubei, Wuhan Patentee before: WUHAN SAFETY ENVIRONMENTAL PRO |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040825 Termination date: 20110715 |