CN105024340A - Simple overvoltage protection trigger device - Google Patents
Simple overvoltage protection trigger device Download PDFInfo
- Publication number
- CN105024340A CN105024340A CN201510488729.2A CN201510488729A CN105024340A CN 105024340 A CN105024340 A CN 105024340A CN 201510488729 A CN201510488729 A CN 201510488729A CN 105024340 A CN105024340 A CN 105024340A
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- China
- Prior art keywords
- overvoltage protection
- internal circuit
- protection trigger
- trigger device
- leakage switch
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Abstract
The invention relates to a simple overvoltage protection trigger device comprising a shell and an internal circuit. The internal circuit comprises a voltage-dependent resistor and a series-connected current-limiting resistor. The internal circuit is connected in parallel on different phases of the upper and lower pile heads of an electric leakage switch. The beneficial effects of the simple overvoltage protection trigger device are that the electric leakage switch which is commonly installed by a user originally is utilized to act as an execution mechanism. When power supply voltage instantaneously reaches or exceeds 270V, the electric leakage switch is triggered to rapidly cut off a power supply, and burnout of electricity utilization equipment of the user can be avoided. Cost is low, only a few yuan is required and installation is easy and convenient without modifying an original power distribution device so that operation is realizable, and thus the simple overvoltage protection trigger device is suitable for wide-area popularization.
Description
Technical field
The present invention relates to a kind of overvoltage protection trigger equipment, especially a kind of simple and easy overvoltage protection trigger equipment.
Background technology
A lot of power consumption equipment in low pressure, often because excess load, maintenance personal's carelessness, power supply unit fault, electric wire are aging, natural calamity, artificial destruction etc. cause zero line disconnection or two phase line short circuits that supply power voltage is raised suddenly being burned, causing the complaint of the responsible reparation of electric company and user.And these accidents only need disconnect power supply when power supply voltage raises suddenly, a large amount of power consumption equipments just can be avoided to damage, but because air switch, the leakage switch being arranged on now electricity consumption end does not all have this function, when supply power voltage raises suddenly, just occur that a large amount of electric equipments burns, even cause fire, cause huge economic compensation dispute.
Be arranged on low-voltage customer electricity consumption side at present and have two kinds of overvoltage protection modes:
One, surge protective device, shortcoming is that price is more expensive, and run-of-the-mill is better close to thousands of unit, and ordinarily resident user cannot be born; Advantage is easy for installation, but mainly protects Lightning Over-voltage, does not have defencive function to the overvoltage that the system failure causes, protection value is higher, and electrical equipment damages also not operating often, once action just entirety scrap, so general resident is difficult to promote the use of;
Two, market there is special intelligent overvoltage protection switch; advantage is that protection is sensitive; can reuse; but price is more expensive; contact capacity is less, needs to change original power distribution equipment, owing to using a large amount of electronic components; failure rate is higher, and in general resident, installation rate is almost nil.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, provides that a kind of cost is low, the simple and easy overvoltage protection trigger equipment of easy-to-install.
The present invention solves the technical scheme that its technical problem adopts: this simple and easy overvoltage protection trigger equipment; comprise shell and internal circuit; described internal circuit comprises the current-limiting resistance of a piezo-resistance and a series connection, and the pile crown up and down that above-mentioned internal circuit is connected to leakage switch is not on homophase.
As preferably, described shell adopts flame retardant plastics.
Inventing useful effect is: the present invention utilizes the original leakage switch generally installed of user as actuator, when supply power voltage meets or exceeds 270 volts instantaneously, triggers leakage switch fast shut-off power supply, avoids user power utilization equipment to burn out.Cost is light, only needs a few yuan, simple installation, does not need to change original power distribution equipment, reliable, suits large area to popularize.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Description of reference numerals: piezo-resistance 1, current-limiting resistance 2, leakage switch 3, fuse 4.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Embodiment:
A leakage switch 3 and fuse 4 is provided with between the line of 220V.As Fig. 1, a kind of simple and easy overvoltage protection trigger equipment, shell adopts flame retardant plastics to be made, and internal circuit adopts highly reliable components and parts, ensures the high reliability used.Described internal circuit comprises the current-limiting resistance 2 of the piezo-resistance 1 of 270 volts and a series connection, and the pile crown up and down that above-mentioned internal circuit is connected to leakage switch 3 is not on homophase.When voltage is normal, be equivalent to an insulator, when voltage is more than 270 volts, piezo-resistance punctures and forms a unsymmetrical current to leakage switch, triggers leakage switch action, cuts off the electricity supply.
The present invention is convenient to use, as long as connect two wires at family expenses leakage switch place, need not change the problems such as user's existing equipment.
In addition to the implementation, the present invention can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of application claims.
Claims (2)
1. a simple and easy overvoltage protection trigger equipment; comprise shell and internal circuit; it is characterized in that: described internal circuit comprises the current-limiting resistance (2) of a piezo-resistance (1) and a series connection, the pile crown up and down that above-mentioned internal circuit is connected to leakage switch (3) is not on homophase.
2. simple and easy overvoltage protection trigger equipment according to claim 1, is characterized in that: described shell adopts flame retardant plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488729.2A CN105024340A (en) | 2015-08-11 | 2015-08-11 | Simple overvoltage protection trigger device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488729.2A CN105024340A (en) | 2015-08-11 | 2015-08-11 | Simple overvoltage protection trigger device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105024340A true CN105024340A (en) | 2015-11-04 |
Family
ID=54414128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510488729.2A Pending CN105024340A (en) | 2015-08-11 | 2015-08-11 | Simple overvoltage protection trigger device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105024340A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2347268Y (en) * | 1998-01-17 | 1999-11-03 | 普宁市新亚实业有限公司 | Leakage protecting switch |
| CN2733702Y (en) * | 2004-09-03 | 2005-10-12 | 卢培增 | Power supply protector |
| CN2821981Y (en) * | 2005-09-27 | 2006-09-27 | 徐海洪 | Household leak breaker mounted with lightning protection anti-over voltage function |
| CN203522174U (en) * | 2013-11-04 | 2014-04-02 | 广东佛电电器有限公司 | Lightning protection device for single-phase leakage switch |
| CN104392871A (en) * | 2014-11-14 | 2015-03-04 | 华南理工大学 | Residual-current circuit breaker with overvoltage protection function |
| CN204905838U (en) * | 2015-08-11 | 2015-12-23 | 国网浙江桐乡市供电公司 | Simple and easy overvoltage protection trigger device |
-
2015
- 2015-08-11 CN CN201510488729.2A patent/CN105024340A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2347268Y (en) * | 1998-01-17 | 1999-11-03 | 普宁市新亚实业有限公司 | Leakage protecting switch |
| CN2733702Y (en) * | 2004-09-03 | 2005-10-12 | 卢培增 | Power supply protector |
| CN2821981Y (en) * | 2005-09-27 | 2006-09-27 | 徐海洪 | Household leak breaker mounted with lightning protection anti-over voltage function |
| CN203522174U (en) * | 2013-11-04 | 2014-04-02 | 广东佛电电器有限公司 | Lightning protection device for single-phase leakage switch |
| CN104392871A (en) * | 2014-11-14 | 2015-03-04 | 华南理工大学 | Residual-current circuit breaker with overvoltage protection function |
| CN204905838U (en) * | 2015-08-11 | 2015-12-23 | 国网浙江桐乡市供电公司 | Simple and easy overvoltage protection trigger device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |