CN203871840U - Programmable, safe, energy-saving leakage protector - Google Patents
Programmable, safe, energy-saving leakage protector Download PDFInfo
- Publication number
- CN203871840U CN203871840U CN201420119935.7U CN201420119935U CN203871840U CN 203871840 U CN203871840 U CN 203871840U CN 201420119935 U CN201420119935 U CN 201420119935U CN 203871840 U CN203871840 U CN 203871840U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model discloses a programmable, safe, energy-saving leakage protector in the field of circuit facility protection devices. The protector comprises a current transformer and a voltage transformer. The current transformer is connected to a sampling circuit two which is connected to a CPU via an A/D conversion circuit. The voltage transformer is connected to a sampling circuit three which is connected to the CPU via the A/D conversion circuit. A signal input terminal of the CPU is connected to a signal setting unit. The CPU is also connected with a display unit. The signal input terminal of the CPU is also connected to a microwave detector. A signal input terminal of the A/D conversion circuit is connected with a zero sequence current transformer via a sampling circuit one. A signal output terminal of the CPU is connected with two relay control circuits which control the connection and disconnection of a zero line and a live line respectively. With the zero sequence current transformer added to the circuit, the circuit is improved in safety and can be widely applied to households and enterprises.
Description
Technical field
The utility model relates to a kind of protective device of circuit facility, particularly the energy-conservation earth leakage protective device of a kind of programmable safe.
Background technology
Modern power systems requires more and more higher to automation, particularly automatically measure and automatically control, in the electricity consumption of existing enterprises and institutions, when enterprises and institutions come off duty, each electrical equipment is in stopping using or holding state, these electrical equipment under inactive or holding state have a certain amount of no-load power loss in the situation that of energising, produce the waste of the larger energy, run counter to the strategic development target of China's energy-saving and emission-reduction, under normal electricity consumption situation, power in circuit should be in an interval, when power in circuit is during lower than interval minimum, illustrate that power consumption equipment in circuit is now in stopping using or holding state, thereby there is the waste of the energy, in the time that the power in circuit is greater than interval maximum, may there is the phenomenon of overload in some equipment in circuit of illustrating, may exceed scope of design, make circuit have certain potential safety hazard.The energy-conservation earth leakage protective device of a kind of programmable safe is disclosed in prior art; the problems referred to above are solved; its publication number is CN203405684U; its weak point is; this safe energy saving device can only testing circuit whether overvoltage or overcurrent; can not reflect in time for the situation that electric leakage occurs in circuit, and the generation of electric leakage easily causes personal safety, thereby have certain potential safety hazard.
Utility model content
The purpose of this utility model is to provide the energy-conservation earth leakage protective device of a kind of programmable safe, eliminates the circuit potential safety hazard of bringing of leak electricity, the security performance of raising circuit working.
The purpose of this utility model is achieved in that the energy-conservation earth leakage protective device of a kind of programmable safe, comprise current transformer and voltage transformer, current transformer is connected with sample circuit two, the signal output part of described sample circuit two is connected with the signal input part of CPU through A/D change-over circuit, described voltage transformer is connected with sample circuit three, the signal output part of sample circuit three is connected with the signal input part of CPU through A/D change-over circuit, the signal input part of described CPU is also connected with signal sets unit, on described CPU, be also connected with display unit, the signal input part of described CPU is also connected with microwave detector, the signal input part of described A/D change-over circuit is also connected with zero sequence current mutual inductor through sample circuit one, the signal output part of described CPU is connected with the first control relay circuit and the second control relay circuit, first control relay circuit control the first magnetic protection relay work, second control relay circuit control the second magnetic protection relay work, the first magnetic protection relay and the second magnetic protection relay are controlled respectively zero line, the break-make of live wire.
As further restriction of the present utility model, described CPU selects STC11F32XE series monolithic.
As further restriction of the present utility model, described A/D change-over circuit is selected ATT7053BU computation chip.
Compared with prior art; the beneficial effects of the utility model are; the utility model by increasing zero sequence current mutual inductor in circuit; make it can in circuit, play the effect that detects leakage current; thereby protection user's personal safety; and by two-way control relay circuit is set, make CPU simultaneously by two-way magnetic protection relay control zero, live wire power-off, further improved the security performance of circuit working.The utility model can be widely used in family and enterprises and institutions.
Brief description of the drawings
Fig. 1 is the utility model control principle block diagram.
Embodiment
The energy-conservation earth leakage protective device of a kind of programmable safe as shown in Figure 1, comprise current transformer and voltage transformer, current transformer is connected with sample circuit two, the signal output part of sample circuit two is connected with the signal input part of CPU through A/D change-over circuit, voltage transformer is connected with sample circuit three, the signal output part of sample circuit three is connected with the signal input part of CPU through A/D change-over circuit, the signal input part of CPU is also connected with signal sets unit, on CPU, be also connected with display unit, the signal input part of CPU is also connected with microwave detector, the signal input part of A/D change-over circuit is also connected with zero sequence current mutual inductor through sample circuit one, the signal output part of CPU is connected with the first control relay circuit and the second control relay circuit, first control relay circuit control the first magnetic protection relay work, second control relay circuit control the second magnetic protection relay work, the first magnetic protection relay and the second magnetic protection relay are controlled respectively zero line, the break-make of live wire, CPU selects STC11F32XE series monolithic, A/D change-over circuit is selected ATT7053BU computation chip.
The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection range of the present utility model.
Claims (3)
1. the energy-conservation earth leakage protective device of programmable safe, comprise current transformer and voltage transformer, current transformer is connected with sample circuit two, the signal output part of described sample circuit two is connected with the signal input part of CPU through A/D change-over circuit, described voltage transformer is connected with sample circuit three, the signal output part of sample circuit three is connected with the signal input part of CPU through A/D change-over circuit, the signal input part of described CPU is also connected with signal sets unit, on described CPU, be also connected with display unit, the signal input part of described CPU is also connected with microwave detector, it is characterized in that, the signal input part of described A/D change-over circuit is also connected with zero sequence current mutual inductor through sample circuit one, the signal output part of described CPU is connected with the first control relay circuit and the second control relay circuit, first control relay circuit control the first magnetic protection relay work, second control relay circuit control the second magnetic protection relay work, the first magnetic protection relay and the second magnetic protection relay are controlled respectively zero line, the break-make of live wire.
2. the energy-conservation earth leakage protective device of a kind of programmable safe according to claim 1, is characterized in that, described CPU selects STC11F32XE series monolithic.
3. the energy-conservation earth leakage protective device of a kind of programmable safe according to claim 1 and 2, is characterized in that, described A/D change-over circuit is selected ATT7053BU computation chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119935.7U CN203871840U (en) | 2014-03-18 | 2014-03-18 | Programmable, safe, energy-saving leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119935.7U CN203871840U (en) | 2014-03-18 | 2014-03-18 | Programmable, safe, energy-saving leakage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871840U true CN203871840U (en) | 2014-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119935.7U Expired - Fee Related CN203871840U (en) | 2014-03-18 | 2014-03-18 | Programmable, safe, energy-saving leakage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871840U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377646A (en) * | 2014-11-04 | 2015-02-25 | 国网四川省电力公司自贡供电公司 | Leakage protector based on life body electric shock feature recognition and leakage protection method thereof |
| CN105762759A (en) * | 2014-12-18 | 2016-07-13 | 国家电网公司 | Electric leakage protection apparatus of intelligent-type rural power grid power distribution terminal |
| CN109308026A (en) * | 2018-11-28 | 2019-02-05 | 上海奇佳电子有限公司 | A kind of three-phase alternating current intelligent controlling device and method |
| CN109510169A (en) * | 2018-11-28 | 2019-03-22 | 上海奇佳电子有限公司 | A kind of single-phase alternating current intelligent controlling device and method |
-
2014
- 2014-03-18 CN CN201420119935.7U patent/CN203871840U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377646A (en) * | 2014-11-04 | 2015-02-25 | 国网四川省电力公司自贡供电公司 | Leakage protector based on life body electric shock feature recognition and leakage protection method thereof |
| CN104377646B (en) * | 2014-11-04 | 2017-03-22 | 国网四川省电力公司自贡供电公司 | Leakage protection method based on life body electric shock feature recognition |
| CN105762759A (en) * | 2014-12-18 | 2016-07-13 | 国家电网公司 | Electric leakage protection apparatus of intelligent-type rural power grid power distribution terminal |
| CN109308026A (en) * | 2018-11-28 | 2019-02-05 | 上海奇佳电子有限公司 | A kind of three-phase alternating current intelligent controlling device and method |
| CN109510169A (en) * | 2018-11-28 | 2019-03-22 | 上海奇佳电子有限公司 | A kind of single-phase alternating current intelligent controlling device and method |
| CN109510169B (en) * | 2018-11-28 | 2020-01-14 | 上海奇佳电子有限公司 | Single-phase alternating current intelligent control device and method |
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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 |
Granted publication date: 20141008 Termination date: 20190318 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |