CN102891440A - Lock-type low-voltage cabinet - Google Patents
Lock-type low-voltage cabinet Download PDFInfo
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- CN102891440A CN102891440A CN2012102915044A CN201210291504A CN102891440A CN 102891440 A CN102891440 A CN 102891440A CN 2012102915044 A CN2012102915044 A CN 2012102915044A CN 201210291504 A CN201210291504 A CN 201210291504A CN 102891440 A CN102891440 A CN 102891440A
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- cabinet
- incoming line
- normally closed
- segmentation
- closed contact
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Abstract
The invention discloses a lock-type low-voltage cabinet, and belongs to the technical field of power supply devices. A control loop in a first line incoming cabinet is connected series with a first line incoming cabinet switching-on button, a second line incoming cabinet breaker normally closed contact and a first line incoming breaker in sequence; a segmentation cabinet breaker normally closed contact is connected in parallel with the two ends of the second line incoming cabinet breaker normally closed contact; a control loop in a second line incoming cabinet is connected in series with a second line incoming cabinet switching-on button, a first line incoming cabinet breaker normally closed contact and a second line incoming cabinet breaker in sequence; the segmentation cabinet breaker normally closed contact is connected in parallel with the two ends of the first line incoming cabinet breaker normally cabinet breaker normally closed contact; the control loop in the segmentation cabinet is connected in series with a segmentation cabinet switching-on button, the first line incoming cabinet breaker normally closed contact and the segmentation cabinet breaker; and the second line incoming cabinet breaker normally closed contact is connected in parallel with the two ends of the first line incoming cabinet breaker normally closed contact. The closed low-voltage cabinet has the advantages that the defect that the interlock of key-lock is easily damaged is overcome; and electric locking is added in the line incoming cabinet and the segmentation cabinet, so that the reliability and the safety of the work of the low-voltage cabinet are improved.
Description
Technical field
The present invention relates to a kind of enclosed type low-voltage cabinet, belong to the electric supply installation technical field.
Background technology
Fast development for present China's economic, the residential quarter, factory, enterprises and institutions' power demands increases, requirement to the fail safe of low-voltage distribution chamber is more and more stricter, two incoming line cabinets in low-voltage distribution chamber and segmentation cabinet are forbidden to close a floodgate simultaneously, otherwise can cause great security incident, usually be by key lock interlocking (three locks, two keys) between two incoming line cabinets in low-voltage distribution chamber and the segmentation cabinet, can only open simultaneously wherein any two cabinets of two incoming line cabinets and segmentation cabinet, three cabinet can not occur and open simultaneously the situation of combined floodgate, because divide-shut brake need plug key in long-term use procedure, cause wearing and tearing or the breaking-up of key, time has been grown and three cabinet will occur and open simultaneously and cause false switching, give and to be sent electricity to bring danger, for remedying the defective of key lock interlocking (three locks, two keys), increase aobvious particularly important of the interlocking of electric aspect.
Summary of the invention
Problem for above-mentioned prior art exists the invention provides a kind of enclosed type low-voltage cabinet, avoid closing a floodgate simultaneously two incoming line cabinets and segmentation cabinet, and coefficient of safety is high.
To achieve these goals, the technical solution used in the present invention is: a kind of enclosed type low-voltage cabinet, comprise an incoming line cabinet, segmentation cabinet and two incoming line cabinets, one incoming line cabinet, segmentation cabinet and two incoming line cabinets are connected successively, be in series with successively an incoming line cabinet switch knob in the control loop in one incoming line cabinet, two incoming line cabinet circuit breaker normally closed contacts and an incoming line cabinet circuit breaker, segmentation cabinet breaker normally closed contact is connected in parallel on the two ends of two incoming line cabinet circuit breaker normally closed contacts, be in series with successively two incoming line cabinet switch knobs in the control loop in two incoming line cabinets, one incoming line cabinet circuit breaker normally closed contact and two incoming line cabinet circuit breakers, segmentation cabinet breaker normally closed contact is connected in parallel on the two ends of an incoming line cabinet circuit breaker normally closed contact, be in series with successively segmentation cabinet switch knob in the control loop in the segmentation cabinet, one incoming line cabinet circuit breaker normally closed contact and segmentation cabinet breaker, two incoming line cabinet circuit breaker normally closed contacts are connected in parallel on the two ends of an incoming line cabinet circuit breaker normally closed contact.
The invention has the beneficial effects as follows: remedy the flimsy defective of appearance of key lock interlocking, in incoming line cabinet and segmentation cabinet, increase electric blocking, reliability and the fail safe of the low-voltage cabinet work of raising.
Description of drawings
Fig. 1 is the electric primary system figure of the present invention;
Fig. 2 is an incoming line cabinet secondary circuit control principle drawing;
Fig. 3 is two incoming line cabinet secondary circuit control principle drawings;
Fig. 4 is segmentation cabinet secondary circuit control principle drawing.
Among the figure: 1 a, incoming line cabinet, 11, an incoming line cabinet circuit breaker, 12, an incoming line cabinet switch knob, 13, an incoming line cabinet circuit breaker normally closed contact, 14, an incoming line cabinet cutout closing locking electromagnet, 2, two incoming line cabinets, 21, two incoming line cabinet circuit breakers, 22, two incoming line cabinet switch knobs, 23, two incoming line cabinet circuit breaker normally closed contacts, 24, two incoming line cabinet cutout closing locking electromagnet, 3, segmentation cabinet, 31, the segmentation cabinet breaker, 32, segmentation cabinet switch knob, 33, segmentation cabinet breaker normally closed contact, 34, segmentation cabinet cutout closing locking electromagnet.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figures 1 to 4, this enclosed type low-voltage cabinet, comprise an incoming line cabinet 1, segmentation cabinet 3 and two incoming line cabinets 2, one incoming line cabinet 1, segmentation cabinet 3 and two incoming line cabinets 2 are connected successively, be in series with successively an incoming line cabinet switch knob 12 in the control loop in one incoming line cabinet 1, two incoming line cabinet circuit breaker normally closed contacts 23 and an incoming line cabinet circuit breaker 11, segmentation cabinet breaker normally closed contact 33 is connected in parallel on the two ends of two incoming line cabinet circuit breaker normally closed contacts 23, be in series with successively two incoming line cabinet switch knobs 22 in the control loop in two incoming line cabinets 2, one incoming line cabinet circuit breaker normally closed contact 13 and two incoming line cabinet circuit breakers 21, segmentation cabinet breaker normally closed contact 33 is connected in parallel on the two ends of an incoming line cabinet circuit breaker normally closed contact 13, be in series with successively segmentation cabinet switch knob 32 in the control loop in the segmentation cabinet 3, one incoming line cabinet circuit breaker normally closed contact 13 and segmentation cabinet breaker 31, two incoming line cabinet circuit breaker normally closed contacts 23 are connected in parallel on the two ends of an incoming line cabinet circuit breaker normally closed contact 13.
One incoming line cabinet, 1 operation principle: when starting an incoming line cabinet switch knob 12, owing in control loop, seal in the parallel circuits of two incoming line cabinet circuit breaker normally closed contacts 23 and segmentation cabinet breaker normally closed contact 33, in an incoming line cabinet 1 closure, one incoming line cabinet cutout closing locking electromagnet 14 electric after, one incoming line cabinet opens circuit 11 when being in "on" position, two incoming line cabinets 2 and segmentation cabinet 3 can only close a floodgate wherein arbitrary, two incoming line cabinets 2 and segmentation cabinet 3 if close a floodgate simultaneously, then an incoming line cabinet 1 control loop is obstructed, one incoming line cabinet cutout closing locking electromagnet 14 can't get electric combined floodgate, thereby has guaranteed can only close arbitrarily two between the three station power distribution cabinets.
Two incoming line cabinets, 2 operation principles: when starting two incoming line cabinet switch knobs 22, owing in control loop, seal in the parallel circuits of an incoming line cabinet circuit breaker normally closed contact 13 and segmentation cabinet breaker normally closed contact 33, in two incoming line cabinets, 2 closures, two incoming line cabinet cutout closing locking electromagnet 24 electric after, when two incoming line cabinet circuit breakers 21 are in "on" position, one incoming line cabinet 1 and segmentation cabinet 3 can only close a floodgate wherein arbitrary, an incoming line cabinet 1 and segmentation cabinet 3 if close a floodgate simultaneously, then two incoming line cabinets, 2 control loops are obstructed, two incoming line cabinet cutout closing locking electromagnet 24 can't get electric combined floodgate, have guaranteed can only close arbitrarily two between the three station power distribution cabinets.
Claims (1)
1. enclosed type low-voltage cabinet, comprise an incoming line cabinet (1), segmentation cabinet (3) and two incoming line cabinets (2), one incoming line cabinet (1), segmentation cabinet (3) and two incoming line cabinets (2) are connected successively, it is characterized in that, be in series with successively an incoming line cabinet switch knob (12) in the control loop in one incoming line cabinet (1), two incoming line cabinet circuit breaker normally closed contacts (23) and an incoming line cabinet circuit breaker (11), segmentation cabinet breaker normally closed contact (33) is connected in parallel on the two ends of two incoming line cabinet circuit breaker normally closed contacts (23), be in series with successively two incoming line cabinet switch knobs (22) in the control loop in two incoming line cabinets (2), one incoming line cabinet circuit breaker normally closed contact (13) and two incoming line cabinet circuit breakers (21), segmentation cabinet breaker normally closed contact (33) is connected in parallel on the two ends of an incoming line cabinet circuit breaker normally closed contact (13), be in series with successively segmentation cabinet switch knob (32) in the control loop in the segmentation cabinet (3), one incoming line cabinet circuit breaker normally closed contact (13) and segmentation cabinet breaker (31), two incoming line cabinet circuit breaker normally closed contacts (23) are connected in parallel on the two ends of an incoming line cabinet circuit breaker normally closed contact (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102915044A CN102891440A (en) | 2012-08-15 | 2012-08-15 | Lock-type low-voltage cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102915044A CN102891440A (en) | 2012-08-15 | 2012-08-15 | Lock-type low-voltage cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102891440A true CN102891440A (en) | 2013-01-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102915044A Pending CN102891440A (en) | 2012-08-15 | 2012-08-15 | Lock-type low-voltage cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102891440A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734027A (en) * | 2015-01-16 | 2015-06-24 | 浙江大学 | Method for preventing mistaken power transmission of 35 kV transformer substation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005253248A (en) * | 2004-03-08 | 2005-09-15 | Meidensha Corp | Failure indicating/locking control circuit of distribution panel |
| CN201075586Y (en) * | 2007-07-27 | 2008-06-18 | 泰豪科技股份有限公司 | Low-voltage distribution operating controller |
| CN201413939Y (en) * | 2009-05-18 | 2010-02-24 | 深圳市深开电器实业有限公司 | Electrical interlocking system of inlet wire and interconnection switch for switch apparatus |
| CN201805268U (en) * | 2010-09-09 | 2011-04-20 | 北京星航机电设备厂 | Low-voltage power distribution three-incoming line two-bus contact electrical interlocking control device |
| CN202009236U (en) * | 2011-03-31 | 2011-10-12 | 宝山钢铁股份有限公司 | Single-bus segmental running control device of substation |
| CN202260153U (en) * | 2011-10-14 | 2012-05-30 | 湖北长江电气有限公司 | Low voltage distribution two-input one-connect electrical interlock system |
| CN202772439U (en) * | 2012-08-15 | 2013-03-06 | 徐州新电高科电气有限公司 | Enclosed type low voltage cabinet |
-
2012
- 2012-08-15 CN CN2012102915044A patent/CN102891440A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005253248A (en) * | 2004-03-08 | 2005-09-15 | Meidensha Corp | Failure indicating/locking control circuit of distribution panel |
| CN201075586Y (en) * | 2007-07-27 | 2008-06-18 | 泰豪科技股份有限公司 | Low-voltage distribution operating controller |
| CN201413939Y (en) * | 2009-05-18 | 2010-02-24 | 深圳市深开电器实业有限公司 | Electrical interlocking system of inlet wire and interconnection switch for switch apparatus |
| CN201805268U (en) * | 2010-09-09 | 2011-04-20 | 北京星航机电设备厂 | Low-voltage power distribution three-incoming line two-bus contact electrical interlocking control device |
| CN202009236U (en) * | 2011-03-31 | 2011-10-12 | 宝山钢铁股份有限公司 | Single-bus segmental running control device of substation |
| CN202260153U (en) * | 2011-10-14 | 2012-05-30 | 湖北长江电气有限公司 | Low voltage distribution two-input one-connect electrical interlock system |
| CN202772439U (en) * | 2012-08-15 | 2013-03-06 | 徐州新电高科电气有限公司 | Enclosed type low voltage cabinet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734027A (en) * | 2015-01-16 | 2015-06-24 | 浙江大学 | Method for preventing mistaken power transmission of 35 kV transformer substation |
| CN104734027B (en) * | 2015-01-16 | 2017-04-12 | 浙江大学 | Method for preventing mistaken power transmission of 35 kV transformer substation |
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Application publication date: 20130123 |