CN203219183U - Low-voltage high-frequency switch power supply - Google Patents
Low-voltage high-frequency switch power supply Download PDFInfo
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- CN203219183U CN203219183U CN 201320190895 CN201320190895U CN203219183U CN 203219183 U CN203219183 U CN 203219183U CN 201320190895 CN201320190895 CN 201320190895 CN 201320190895 U CN201320190895 U CN 201320190895U CN 203219183 U CN203219183 U CN 203219183U
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- power supply
- switch power
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- voltage
- frequency switch
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Abstract
The utility model relates to a low-voltage high-frequency switch power supply. The low-voltage high-frequency switch power supply is different in that a low-voltage switch power supply having an input end capable of connection with a 110-280 V voltage is included, wherein the input end of the low-voltage switch power supply is in parallel connection with an AC contactor, and the output end of the low-voltage switch power supply is first in series connection with a current-limiting fuse and an AC contactor normally-open contact and then is in parallel connection with a capacitor bank. The low-voltage high-frequency switch power supply has the advantages of fast response time and improved stability of a power distribution system.
Description
Technical field
The utility model relates to a kind of low pressure high frequency switch power.
Background technology
The present actual conditions of China's 10kV power circuit are that circuit is long, the physical features complexity, and weather conditions are changeable, and operating condition is also poor, and can't often safeguard.Thereby remote districts and circuit occur when long through regular meeting, cause line voltage distribution on the low side, more very be that the line voltage distribution fluctuating range is very big, be higher than the scope range of the fluctuation of voltage of national regulation far away, can't guarantee the user power utilization quality.Therefore, except line power equipment is had the strict demand, for providing the equipment of stable operating power, it also must realize suiting measures to local conditions.Though traditional pressurizer stable performance, its volume is big, the cost height, and useful life is short, and area coverage is narrow, and to temperature, conditional request harshnesses such as humidity, external characteristic curve can not satisfy the impact that voltage often fluctuates and produces.Make the equipment can't operate as normal, even burn power consumption equipment.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of low pressure high frequency switch power is provided, and the response time is fast, can improve the stability of electrical power distribution system.
For solving above technical problem, the technical solution of the utility model is: a kind of low pressure high frequency switch power, its difference is: it comprises that input can connect the low tension switch power supply of 110～280V voltage, the input of described low tension switch power supply A.C. contactor in parallel, in parallel with the capacitor group again behind the output series connection current limiting fuse of described low tension switch power supply and the A.C. contactor normally opened contact.
By above technical scheme, be integrated with PWM chip, high-frequency Switching Power Supply, single-phase bridge circuit in the described low tension switch power supply.
By above technical scheme, the model specification of described high-frequency Switching Power Supply is 220V, 1.9A, TP500-220IR.
By above technical scheme, described capacitor group is made up of eight alternating current electrolysis capacitors at least.
By above technical scheme, the model specification of described capacitor is 10F, 400V.
The contrast prior art, beneficial features of the present utility model is as follows:
1) this low pressure high frequency switch power, low tension switch power supply be to input AC contactor normally opened contact between the capacitor group, can guarantee that normal power source has a power failure after, stored voltage improves the standby service time of capacitor group not to high-frequency Switching Power Supply feed on the capacitor group;
2) this low pressure high frequency switch power, the current limiting fuse of low tension switch power output end series connection, the response time is fast, and antijamming capability is strong, can guarantee to guarantee that in the fusing insurance of the following very first time of failure condition the device miscellaneous equipment is unaffected.
Description of drawings
Fig. 1 is the utility model embodiment schematic diagram;
Wherein: 1-A.C. contactor, 2-low tension switch power supply, 3-current limiting fuse, 4-A.C. contactor normally opened contact, 5-capacitor.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail below by embodiment.
Please refer to Fig. 1, the utility model embodiment low pressure high frequency switch power, it comprises that input can connect the low tension switch power supply 2 of 110～280V voltage, the input of described low tension switch power supply 2 A.C. contactor 1 in parallel, in parallel with the capacitor group again behind the output series connection current limiting fuse 3 of described low tension switch power supply 2 and the A.C. contactor normally opened contact 4.
Concrete, be integrated with PWM chip, high-frequency Switching Power Supply, single-phase bridge circuit in the described low tension switch power supply 2.
Preferably, the model specification of described high-frequency Switching Power Supply is 220V, 1.9A, TP500-220IR.
Concrete, described capacitor group is made up of eight alternating current electrolysis capacitors 5 at least.
Preferably, the model specification of described capacitor 5 is 10F, 400V.
The operation principle of the utility model embodiment is: the wide input voltage of 110V to 280V transfers stretch circuit, single phase bridge type rectifier circu to be filtered into 240V pulsation alternating voltage through pwm pulse, and this voltage is sent into pwm pulse and transferred stretch circuit, makes the constant 220V of being of output voltage.Ac output voltage is to input AC contactor normally opened contact between the capacitor group, can guarantee that normal power source has a power failure after, stored voltage improves the standby service time of capacitor group not to high-frequency Switching Power Supply feed on the capacitor group.
The utility model is reasonable in design, and is simple in structure, convenient and practical, maintenance, easy to maintenance, cheap, and volume is little, and is not high to environment, temperature, humidity requirement.
Among the utility model embodiment; problem on the low side at the long low pressure that causes of present power circuit and can't improve; adopt the low tension switch power supply that the capacitor group is charged; the low tension switch power input can connect and exchange 110V～interchange 280V power supply; the output voltage of low tension switch power supply is alternating current 220V; low tension switch power output end series connection current limiting fuse; carry out short circuit and error protection; the model specification of the high-frequency Switching Power Supply that adopts is 220V; 1.9A, TP500-220IR, it connects the input power supply can be by exchanging 110V to exchanging the 280V power supply; output voltage stabilization is alternating current 220V; and then satisfy the fail safe of user power utilization, and the current limiting fuse of high-frequency Switching Power Supply output series connection, the response time is fast; antijamming capability is strong; can guarantee to guarantee that in the fusing insurance of the following very first time of failure condition the device miscellaneous equipment is unaffected, the capacitor group is made up of the alternating current electrolysis electric capacity of eight 10 F 400V of parallel connection; and can increase and decrease arbitrarily according to each place difference, to satisfy the demands.
The utility model floor space is little, easy for installation, can be installed together with low-voltage distribution cabinet, safeguard simple, response speed is fast, can improve power supply reliability greatly, having reduced the user can't electricity consumption because of low-voltage or damage the situation of power consumption equipment, improves user satisfaction and social benefit, reduced management cost, this device caloric value is little, and to temperature, conditions such as humidity do not have strict demand, test result during according to situation about using and to operation, this installs operational excellence, can improve the stability of electrical power distribution system, is a kind of desirable, stable, the switching power unit that cost performance is higher.
Above content be in conjunction with concrete execution mode to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the those of ordinary skill of the technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (5)
1. low pressure high frequency switch power, it is characterized in that: it comprises that input can connect the low tension switch power supply of 110～280V voltage, the input of described low tension switch power supply A.C. contactor in parallel, in parallel with the capacitor group again behind the output series connection current limiting fuse of described low tension switch power supply and the A.C. contactor normally opened contact.
2. low pressure high frequency switch power as claimed in claim 1 is characterized in that: be integrated with PWM chip, high-frequency Switching Power Supply, single-phase bridge circuit in the described low tension switch power supply.
3. low pressure high frequency switch power as claimed in claim 2, it is characterized in that: the model specification of described high-frequency Switching Power Supply is 220V, 1.9A, TP500-220IR.
4. low pressure high frequency switch power as claimed in claim 1, it is characterized in that: described capacitor group is made up of eight alternating current electrolysis capacitors at least.
5. low pressure high frequency switch power as claimed in claim 4, it is characterized in that: the model specification of described capacitor is 10F, 400V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320190895 CN203219183U (en) | 2013-04-17 | 2013-04-17 | Low-voltage high-frequency switch power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320190895 CN203219183U (en) | 2013-04-17 | 2013-04-17 | Low-voltage high-frequency switch power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203219183U true CN203219183U (en) | 2013-09-25 |
Family
ID=49208684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320190895 Expired - Fee Related CN203219183U (en) | 2013-04-17 | 2013-04-17 | Low-voltage high-frequency switch power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203219183U (en) |
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2013
- 2013-04-17 CN CN 201320190895 patent/CN203219183U/en not_active Expired - Fee Related
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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: 20130925 Termination date: 20160417 |