CN204793657U - High low -voltage switchgear prevents interrupting device - Google Patents
High low -voltage switchgear prevents interrupting device Download PDFInfo
- Publication number
- CN204793657U CN204793657U CN201520566242.7U CN201520566242U CN204793657U CN 204793657 U CN204793657 U CN 204793657U CN 201520566242 U CN201520566242 U CN 201520566242U CN 204793657 U CN204793657 U CN 204793657U
- Authority
- CN
- China
- Prior art keywords
- voltage switchgear
- high low
- fuse
- low voltage
- switch cabinet
- 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.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a high low -voltage switchgear prevents interrupting device, include: isolation transformer, its input is connected with electric network source, and the output is connected with high low -voltage switchgear control circuit, first fuse, its electricity is connected between electric network source and isolation transformer, the second fuse, its electricity is connected between isolation transformer and high low -voltage switchgear control circuit. The utility model has the advantages of: preceding stage at high low -voltage switchgear control circuit increases isolation transformer, and secondary control circuit can control high low -voltage switchgear with net alternating current power supply, has avoided because of the malfunction that the electric wire netting harmonic arouses, has strengthened power supply and power consumption effect, and the maintenance is maintained safer more swiftly, it when the circuit short circuit, plays protection isolation transformer and high -low pressure control circuit's effect to increase the fuse for high low -voltage switchgear is safer.
Description
Technical field
The utility model relates to a kind of circuit interference preventer.More particularly, the utility model relates to a kind of interference preventer of High-low voltage switch cabinet.
Background technology
High-low voltage switch cabinet as indispensable important controller switching equipment, is widely used in the electricity usage places such as power plant, transformer station, miner enterprise, house, market in electric power system.Because of the development of power electronic product, in numerous power electronic product use procedure, some harmonic waves can be produced, these harmonic waves can be propagated in whole electricity grid network, the power consumption equipment that direct impact is connected on electricity grid network runs, because harmonic wave can affect the operation of power consumption equipment, power consumption equipment even can be caused to produce misoperation, power supply department and Electricity customers, power consumption equipment are all had a negative impact.And High-low voltage switch cabinet control loop itself carries the low pressure of harm personal safety at present, has a negative impact to the maintenance work of maintenance personal.
In view of foregoing description, urgently there is a kind of safety, anti-tampering, easy to use, simple, be easy to the interference preventer of the High-low voltage switch cabinet safeguarded.
Utility model content
The utility model solves the problem, and provides a kind of interference preventer of High-low voltage switch cabinet.
In order to realize these objects of the present utility model and other advantage, provide a kind of interference preventer of High-low voltage switch cabinet, comprising: isolating transformer, its input is connected with electric network source, and output is connected with High-low voltage switch cabinet control loop; First fuse, it is connected electrically between electric network source and isolating transformer; Second fuse, it is connected electrically between isolating transformer and High-low voltage switch cabinet control loop.
Preferably, described first fuse is connected on the live wire L of described electric network source, and is connected between isolating transformer and described electric network source.
Preferably, described second fuse is connected on the live wire L of High-low voltage switch cabinet control loop, and is connected between isolating transformer and High-low voltage switch cabinet control loop.
Preferably, the no-load voltage ratio of described isolating transformer is 1: 0.5.
The utility model comprises following beneficial effect: increase isolating transformer in the prime of High-low voltage switch cabinet control loop, secondary control loop can control High-low voltage switch cabinet with pure AC power, avoid the misoperation because mains by harmonics causes, enhance power supply and electricity consumption effect, maintenance maintenance is safer faster; Increase fuse when short circuit, play the effect of protective separation transformer and high-low pressure control loop, make High-low voltage switch cabinet safer.
Part is embodied by explanation below by other advantage of the present utility model, target and feature, part also will by research and practice of the present utility model by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of interference preventer of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, utility model is described in further detail, can implements according to this with reference to specification word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
Fig. 1 shows according to a kind of way of realization of the present utility model, comprising: isolating transformer 1, its input is connected with electric network source, output is connected with High-low voltage switch cabinet control loop 2, the electric current of electric network source input is by obtaining pure AC power after isolating transformer, the current/voltage being input to high and low voltage switch control loop is stablized, and electric current is pure; First fuse 3, it is connected with the input of isolating transformer 1, is connected electrically between electric network source and isolating transformer 1, protects as higher level's short circuit; Second fuse 4, is connected with the output of isolating transformer 1, is connected electrically between isolating transformer 1 and High-low voltage switch cabinet control loop 2, as subordinate's short circuit protection.Described first fuse 3 is connected on the live wire L of described electric network source, and is connected between isolating transformer 1 and described electric network source, protects as higher level's short circuit; Described second fuse 4 is connected on the live wire L of High-low voltage switch cabinet control loop 2, and is connected between isolating transformer 1 and High-low voltage switch cabinet control loop 2, as subordinate's short circuit protection; The no-load voltage ratio of isolating transformer 1 is 1: 0.5, and the voltage of control loop can be made to become safer electric pressure, thus improves the fail safe of operational environment.
Here the number of devices illustrated and treatment scale are used to simplify explanation of the present utility model.Application of the present utility model, modifications and variations be will be readily apparent to persons skilled in the art.
As mentioned above, according to the utility model, because the prime at High-low voltage switch cabinet control loop increases isolating transformer, secondary control loop can control High-low voltage switch cabinet with pure AC power, avoid the misoperation because mains by harmonics causes, enhance power supply and electricity consumption effect, maintenance maintenance is safer faster; Increase fuse when short circuit; play the effect of protective separation transformer and high-low pressure control loop; make High-low voltage switch cabinet safer; the no-load voltage ratio of isolating transformer can be chosen as 1: 0.5; the voltage of control loop can be made to become safer electric pressure, thus improve the fail safe of operational environment.
Although the embodiment of utility model is open as above, it is not restricted to listed in specification and execution mode utilization.It can be applied to various applicable field of the present utility model completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (4)
1. an interference preventer for High-low voltage switch cabinet, is characterized in that, comprising:
Isolating transformer (1), its input is connected with electric network source, and output is connected with High-low voltage switch cabinet control loop (2);
First fuse (3), it is connected electrically between electric network source and isolating transformer (1);
Second fuse (4), it is connected electrically between isolating transformer (1) and High-low voltage switch cabinet control loop (2).
2. the interference preventer of High-low voltage switch cabinet according to claim 1, is characterized in that, described first fuse (3) is connected on the live wire L of described electric network source.
3. the interference preventer of High-low voltage switch cabinet according to claim 1, is characterized in that, described second fuse (4) is connected on the live wire L of High-low voltage switch cabinet control loop (2).
4. the interference preventer of High-low voltage switch cabinet according to claim 1, is characterized in that, the no-load voltage ratio of described isolating transformer (1) is 1: 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520566242.7U CN204793657U (en) | 2015-07-30 | 2015-07-30 | High low -voltage switchgear prevents interrupting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520566242.7U CN204793657U (en) | 2015-07-30 | 2015-07-30 | High low -voltage switchgear prevents interrupting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204793657U true CN204793657U (en) | 2015-11-18 |
Family
ID=54533642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520566242.7U Active CN204793657U (en) | 2015-07-30 | 2015-07-30 | High low -voltage switchgear prevents interrupting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204793657U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086464A (en) * | 2017-05-22 | 2017-08-22 | 四川艾德瑞电气有限公司 | Traction substation pressure resistant type isolating transformer case |
| CN110277764A (en) * | 2019-07-24 | 2019-09-24 | 阳光电源股份有限公司 | A kind of power grid overvoltage crowbar and method |
-
2015
- 2015-07-30 CN CN201520566242.7U patent/CN204793657U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086464A (en) * | 2017-05-22 | 2017-08-22 | 四川艾德瑞电气有限公司 | Traction substation pressure resistant type isolating transformer case |
| CN110277764A (en) * | 2019-07-24 | 2019-09-24 | 阳光电源股份有限公司 | A kind of power grid overvoltage crowbar and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MX2012013668A (en) | Converting device of electrical energy. | |
| CN204793657U (en) | High low -voltage switchgear prevents interrupting device | |
| CN204440773U (en) | Three grades of aftercurrent action protecting simulation training systems | |
| CN203607226U (en) | Power transformer for kitchen and bath electric appliances | |
| CN103941624B (en) | A kind of VBE system simulation operation of high voltage direct current transmission converter valve and training platform | |
| CN202737792U (en) | Automatic converting circuit for intelligent power-saving cabinet | |
| CN103001969A (en) | Network security isolating device | |
| CN204216564U (en) | A kind of distribution new equipment | |
| CN204440772U (en) | Three grades of aftercurrent action protecting Simulated training devices | |
| CN102110975A (en) | Microcomputer monitoring motor protector | |
| CN204440769U (en) | A kind of residual current protecting simulation training cabinet | |
| CN201904617U (en) | Intelligent SPD with timing function | |
| CN202153709U (en) | Frequency converter | |
| CN205720457U (en) | A kind of stable intelligent relay-protection tester of powering | |
| CN204440770U (en) | Packaged type residual current protecting training cabinet | |
| CN204065247U (en) | A kind of multi-functional load prior-warning device | |
| CN204633323U (en) | A kind of protective circuit of anti-lightning surge and the Switching Power Supply of application thereof | |
| CN203761017U (en) | Short circuit current protection device of motor protector | |
| CN203434591U (en) | Security-isolation insulating power-off device | |
| CN202940580U (en) | Wave-stabilizing and current-discharging apparatus | |
| CN209016684U (en) | Forceful electric power tripping control circuit | |
| CN204440771U (en) | Reinforcement type residual current protecting simulation training cabinet | |
| CN204481691U (en) | Set Top Box power supply adaptor | |
| CN105119239A (en) | Intelligent power grid transformer micro-control protector | |
| CN202405743U (en) | Overvoltage protector for residential electricity utilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An Anti interference Device for High and Low Voltage Switchgear Effective date of registration: 20221008 Granted publication date: 20151118 Pledgee: Nanning Branch of Guilin Bank Co.,Ltd. Pledgor: GUANGXI NANBAOTE ELECTRIC MANUFACTURING CO.,LTD. Registration number: Y2022450000170 |