CN202121212U - Circuit control device of low voltage power distribution cabinet - Google Patents
Circuit control device of low voltage power distribution cabinet Download PDFInfo
- Publication number
- CN202121212U CN202121212U CN 201120233292 CN201120233292U CN202121212U CN 202121212 U CN202121212 U CN 202121212U CN 201120233292 CN201120233292 CN 201120233292 CN 201120233292 U CN201120233292 U CN 201120233292U CN 202121212 U CN202121212 U CN 202121212U
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- CN
- China
- Prior art keywords
- phase line
- circuit
- line end
- rcd
- control device
- 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
- 238000005259 measurement Methods 0.000 claims description 3
- 230000001012 protector Effects 0.000 abstract 4
- 230000001681 protective effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The utility model relates to a circuit control device of a low voltage power distribution cabinet. The circuit control device is characterized in that a first phase line end, a second phase line end, and a third phase line end of an input terminal are connected with one end of an alternating current contactor contact after passing through a main switch, current transformers, and a residual current operated protector, and the other end of the alternating current contactor contact is connected with phase line ends of an output terminal via an air switch after being connected with a reactive power automatic compensating device; a zero line end of the input terminal is connected with the zero line end of the output terminal, and two power supply ends of the residual current operated protector are connected with the zero line end and a phase line below the main switch respectively; a control end of the residual current operated protector is connected with the phase line below the main switch via an alternating current contactor; and the other control end of the residual current operated protector is connected with another phase line below the main switch. The circuit control device of the low voltage power distribution cabinet can realize the functions of earth leakage protection, short circuit protection, reactive compensation, and the like at the same time, and has the advantages of simple structure, convenience of use, and low cost.
Description
Technical field
The utility model relates to low-voltage distribution cabinet circuit engineering field, is specifically related to a kind of low-voltage distribution cabinet circuit control device.
Background technology
Traditional low-voltage distribution cabinet, function singleness can only realize overcurrent protection and controlled function, can not realize functions such as earth leakage protective, short-circuit protection, reactive power compensation simultaneously.Fundamentally can't satisfy the requirement of putting prevention first, more can not satisfy economy, safety, the reliability service of distribution.
The utility model content
The purpose of the utility model is exactly the defective that exists to prior art, and a kind of low-voltage distribution cabinet circuit control device is provided.
Its technical scheme is: comprise the input terminal, master switch, measuring circuit, indicating circuit, protection compensation output circuit and the lead-out terminal that connect in order; Measuring circuit connects voltmeter by voltage change-over switch and forms tension measuring circuit; Connect rheotrope and ammeter is formed current measurement circuit by current transformer, indicating circuit is connected to be star connection and to be connected with power supply by first indicator light, second indicator light and the 3rd indicator light and forms.Said protection compensation output circuit is made up of RCD, A.C. contactor, reactive power automatic compensator and air switch; The first phase line end of input terminal, the second phase line end and third phase line end are connected with an end of ac contactor contact through master switch and after passing first current transformer, second instrument transformer, the 3rd instrument transformer and RCD; The other end of ac contactor contact is with after reactive power automatic compensator is connected, through air switch and lead-out terminal first line end, the second phase line end and third phase line end are connected mutually; The zero line side of input terminal is connected with the zero line side of lead-out terminal, and two power ends of RCD are connected with a phase line under the master switch with zero line side respectively; One control end of RCD is connected with a phase line under the master switch through A.C. contactor, and another under another control end of RCD and master switch line end mutually is connected.
Wherein, said protection compensation output circuit and lead-out terminal are made as 1 group at least.
The utility model has simple in structure, easy to use, with low cost and can realize the advantage of functions such as earth leakage protective, short-circuit protection, reactive power compensation simultaneously compared with prior art.
Description of drawings
Fig. 1 is the circuit structure schematic diagram of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1; A kind of low-voltage distribution cabinet circuit control device; Comprise the input terminal 1, master switch 2, measuring circuit 3, indicating circuit 4, protection compensation output circuit 5 and the lead-out terminal 6 that connect in order; Measuring circuit 3 connects voltmeter V by voltage change-over switch K1 and forms tension measuring circuit; Connect rheotrope K2 and ammeter A forms current measurement circuit by current transformer L1-L3, indicating circuit 4 is connected to be star connection and to be connected with power supply by the first indicator light D1, the second indicator light D2 and the 3rd indicator light D3 and forms.Said protection compensation output circuit 5 is made up of RCD KC, A.C. contactor KM, reactive power automatic compensator C and air switch K; The first phase line end U1, the second phase line end U2 and the third phase line end U3 of input terminal 1 is connected with the end of ac contactor contact KM-1 through master switch 2 and after passing the first current transformer L1, the second instrument transformer L2, the 3rd instrument transformer L3 and RCD KC; The other end of ac contactor contact KM-1 is with after reactive power automatic compensator C is connected, through air switch K and lead-out terminal 6 first line end U4, the second phase line end U5 and third phase line end U6 are connected mutually; The zero line side N of input terminal 1 is connected with the zero line side N of lead-out terminal 6, and two power ends of RCD KC are connected with a phase line under the master switch 2 with zero line side N respectively; The control end of RCD KC is connected with a phase line under the master switch 2 through A.C. contactor KM, and another under another control end of RCD KC and the master switch 2 line end mutually is connected.
Said protection compensation output circuit and lead-out terminal are made as 1 group (among the figure being 1 group) at least; When being made as more than 2 groups or 2 groups, the input parallel connection of each protection compensation output circuit, lead-out terminal is independent separately; Make this device form multichannel output, compensate respectively and control.
Claims (2)
1. low-voltage distribution cabinet circuit control device; Comprise the input terminal, master switch, measuring circuit, indicating circuit, protection compensation output circuit and the lead-out terminal that connect in order; Measuring circuit connects voltmeter by voltage change-over switch and forms tension measuring circuit; Form current measurement circuit by current transformer connection rheotrope and ammeter; Indicating circuit is connected to be star connection and to be connected with power supply by first indicator light, second indicator light and the 3rd indicator light and forms; It is characterized in that: said protection compensation output circuit is made up of RCD, A.C. contactor, reactive power automatic compensator and air switch; The first phase line end of input terminal, the second phase line end and third phase line end are connected with an end of ac contactor contact through master switch and after passing first current transformer, second instrument transformer, the 3rd instrument transformer and RCD; The other end of ac contactor contact is with after reactive power automatic compensator is connected, through air switch and lead-out terminal first line end, the second phase line end and third phase line end are connected mutually; The zero line side of input terminal is connected with the zero line side of lead-out terminal, and two power ends of RCD are connected with a phase line under the master switch with zero line side respectively; One control end of RCD is connected with a phase line under the master switch through A.C. contactor, and another under another control end of RCD and master switch line end mutually is connected.
2. low-voltage distribution cabinet circuit control device according to claim 1 is characterized in that: said protection compensation output circuit and lead-out terminal are made as 1 group at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120233292 CN202121212U (en) | 2011-07-05 | 2011-07-05 | Circuit control device of low voltage power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120233292 CN202121212U (en) | 2011-07-05 | 2011-07-05 | Circuit control device of low voltage power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202121212U true CN202121212U (en) | 2012-01-18 |
Family
ID=45462249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120233292 Expired - Fee Related CN202121212U (en) | 2011-07-05 | 2011-07-05 | Circuit control device of low voltage power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202121212U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969656A (en) * | 2012-11-30 | 2013-03-13 | 上虞市电力公司 | Low-voltage comprehensive capacitance integrated cabinet |
| CN103001129A (en) * | 2012-11-30 | 2013-03-27 | 上虞市电力公司 | Low-voltage integration box |
| CN103219654A (en) * | 2013-04-28 | 2013-07-24 | 国家电网公司 | Improved direct current power box with arrester |
| CN111525889A (en) * | 2020-05-09 | 2020-08-11 | 安徽联维新能源科技有限公司 | Solar photovoltaic power generation supply system |
-
2011
- 2011-07-05 CN CN 201120233292 patent/CN202121212U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969656A (en) * | 2012-11-30 | 2013-03-13 | 上虞市电力公司 | Low-voltage comprehensive capacitance integrated cabinet |
| CN103001129A (en) * | 2012-11-30 | 2013-03-27 | 上虞市电力公司 | Low-voltage integration box |
| CN102969656B (en) * | 2012-11-30 | 2015-07-08 | 上虞市电力公司 | Low-voltage comprehensive capacitance integrated cabinet |
| CN103001129B (en) * | 2012-11-30 | 2015-07-15 | 上虞市电力公司 | Low-voltage integration box |
| CN103219654A (en) * | 2013-04-28 | 2013-07-24 | 国家电网公司 | Improved direct current power box with arrester |
| CN111525889A (en) * | 2020-05-09 | 2020-08-11 | 安徽联维新能源科技有限公司 | Solar photovoltaic power generation supply system |
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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: DONGYING HEKOU POWER SUPPLY COMPANY SHANDONG ELECT Effective date: 20130719 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: HEKOU POWER SUPPLY COMPANY Effective date: 20130719 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 257200 DONGYING, SHANDONG PROVINCE TO: 100761 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130719 Address after: 100761 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Dongying Hekou District Power Supply Company Patentee after: Dongying Power Supply Branch of Shandong Electric Power Corporation Address before: 257200 No. 3, Haining Road, Hekou District, Shandong, Dongying Patentee before: Hekou Power Supply Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20150705 |
|
| EXPY | Termination of patent right or utility model |