CN107359593A - Intelligent Type B residual current protection switch - Google Patents
Intelligent Type B residual current protection switch Download PDFInfo
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- CN107359593A CN107359593A CN201710760539.0A CN201710760539A CN107359593A CN 107359593 A CN107359593 A CN 107359593A CN 201710760539 A CN201710760539 A CN 201710760539A CN 107359593 A CN107359593 A CN 107359593A
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- Prior art keywords
- current
- microprocessor
- sensing unit
- intelligent type
- monitoring signals
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of intelligent Type B residual current protection to switch.The leakage current sensing unit and trip unit electrically connect microprocessor independently of each other, and the trip unit controlled actuation causes switch conduction or disconnection.The leakage current sensing unit monitors ac and dc current simultaneously, and to the real-time output AC/DC current monitor signal of the microprocessor.When the microprocessor obtains above-mentioned ac and dc current monitoring signals and abnormality occurs according to preset ac and dc current monitoring signals threshold decision ac and dc current, the microprocessor output action instruction.The trip unit obtains above-mentioned action command, and disconnects the switch according to above-mentioned action command.Intelligent Type B residual current protection switch disclosed by the invention, when any monitoring condition threshold value default more than the monitoring condition, trip unit will switch off under main control unit control, isolation in time and excision potential safety hazard.
Description
Technical field
The invention belongs to technical field of electric equipment, and in particular to a kind of intelligent Type B residual current protection switch.
Background technology
Leakage current sensor has a variety of metering systems, and it is electric to be widely used in the every profession and trades such as new energy, chemical industry, communication
Monitoring of equipment.Traditional leakage current sensor can be divided into DC leakage flow sensor and the major class of ac leakage flow sensor two, only
DC current monitoring or monitoring alternating current can be carried out.If be coupled with AC compounent in DC current, it will cause to monitor
As a result distortion and failure.
The content of the invention
The present invention is directed to the situation of prior art, overcomes drawbacks described above, there is provided a kind of intelligent Type B residual current protection switch.
The present invention uses following technical scheme, and the intelligent Type B residual current protection switch includes main control unit, electric leakage is spread
Feel unit, trip unit and switch, the periphery simulation electricity that the main control unit is provided with microprocessor and electrically connected with microprocessor
Road, wherein：
The leakage current sensing unit and trip unit electrically connect microprocessor, the trip unit controlled actuation independently of each other
So that switch conduction or disconnection；
The leakage current sensing unit monitors ac and dc current simultaneously, and to the real-time output AC/DC electric current of the microprocessor
Monitoring signals；
When the microprocessor obtains above-mentioned ac and dc current monitoring signals and according to preset ac and dc current monitoring signals
When there is abnormality in threshold decision ac and dc current, the microprocessor output action instruction；
The trip unit obtains above-mentioned action command, and disconnects the switch according to above-mentioned action command.
According to above-mentioned technical proposal, the leakage current sensing unit monitors pulse current simultaneously, and to the microprocessor
Device exports pulse current monitoring signals in real time；When the microprocessor obtains above-mentioned pulse current monitoring signals and according to preset
Friendship pulse current monitoring signals threshold decision pulse current when there is abnormality, the microprocessor output action instruction；
The trip unit obtains above-mentioned action command, and disconnects the switch according to above-mentioned action command.
According to above-mentioned technical proposal, the intelligent Type B residual current protection switch also includes voltage sensor unit, the voltage
Sensing unit electrically connects microprocessor, and the voltage sensor unit monitors phase voltage in real time, and real-time to the microprocessor
Export phase voltage monitoring signals；When the microprocessor obtains above-mentioned phase voltage monitoring signals and is supervised according to preset phase voltage
When survey signal threshold value judges that abnormality occurs in phase voltage, the microprocessor output action instruction；The trip unit obtains
Above-mentioned action command, and the switch is disconnected according to above-mentioned action command.
According to above-mentioned technical proposal, the intelligent Type B residual current protection switch also includes current sensing unit, the electric current
Sensing unit electrically connects microprocessor, and the current sensing unit monitors phase current in real time, and real-time to the microprocessor
Output current phase monitoring signals；When the microprocessor obtains above-mentioned phase current monitoring signals and is supervised according to preset phase current
When survey signal threshold value judges that abnormality occurs in phase current, the microprocessor output action instruction；The trip unit obtains
Above-mentioned action command, and the switch is disconnected according to above-mentioned action command.
According to above-mentioned technical proposal, the current sensing unit includes the first current sensor and the second current sensor.
According to above-mentioned technical proposal, when the intelligent Type B residual current protection is switched for single-phase monitoring, the electric current passes
Feel unit and the first current sensor or the second current sensor are set；When the intelligent Type B residual current protection is switched for three
When mutually monitoring, the current sensing unit sets the first current sensor and the second current sensor simultaneously.
According to above-mentioned technical proposal, the intelligent Type B residual current protection switch also includes temperature sensing unit, the temperature
Sensing unit electrical connection microprocessor, the real-time monitoring temperature of temperature sensing unit, and it is real to the microprocessor
When output services temperature monitoring signal；When the microprocessor obtains above-mentioned operating temperature monitoring signals and according to preset work
When making temperature monitoring signal threshold value and judging that abnormality occurs in operating temperature, the microprocessor output action instruction；It is described de-
Detain unit and obtain above-mentioned action command, and the switch is disconnected according to above-mentioned action command.
According to above-mentioned technical proposal, a width of 1KHz of hum bar of the leakage current sensing unit.
Intelligent Type B residual current protection switch disclosed by the invention, its advantage is, is somebody's turn to do when any monitoring condition exceedes
During the default threshold value of monitoring condition, trip unit will switch off under main control unit control, and isolation in time and excision safety are hidden
Suffer from.
Brief description of the drawings
Fig. 1 is the system block diagram of the preferred embodiment of the present invention.
Fig. 2 is the function structure chart of the preferred embodiment of the present invention.
Reference includes：10- main control units；11- microprocessors；12- peripheries analog circuit；20- voltage sensor units；
30- current sensing units；The current sensors of 31- first；The current sensors of 32- second；40- leakage current sensing units；50- temperature
Sensing unit；60- trip units；70- is switched.
Embodiment
The invention discloses a kind of intelligent Type B residual current protection to switch, with reference to preferred embodiment, to the tool of the present invention
Body embodiment is further described.
Referring to Fig. 1 and Fig. 2 of accompanying drawing, the intelligent Type B residual current protection switch is with overcurrent, overvoltage, temperature, leakage
Current monitoring function.Preferably, the intelligent Type B residual current protection switch include main control unit 10, leakage current sensing unit 40,
Trip unit 60 and switch 70；Wherein, the main control unit 10 is provided with microprocessor 11 and electrically connected with microprocessor 11 outer
Enclose analog circuit 12.
Preferably, the leakage current sensing unit 40 and trip unit 60 electrically connect microprocessor 11, institute independently of each other
The controlled actuation of trip unit 60 is stated so that switch 70 is switched on or off.Wherein, the leakage current sensing unit 40 monitors simultaneously
Ac and dc current, and to the real-time output AC/DC current monitor signal of the microprocessor 11.When the microprocessor 11 obtains
Take above-mentioned ac and dc current monitoring signals and flowed out according to preset ac and dc current monitoring signals threshold decision alterating and direct current
During existing abnormality, the output action of microprocessor 11 instruction.The trip unit 60 obtains above-mentioned action command, and root
The switch 70 is disconnected according to above-mentioned action command.
Further, the leakage current sensing unit 40 can also monitor pulse current simultaneously, and to the microprocessor
11 export pulse current monitoring signals in real time.When the microprocessor 11 obtains above-mentioned pulse current monitoring signals and according to pre-
When abnormality occurs in the friendship pulse current monitoring signals threshold decision pulse current put, the output action of microprocessor 11 refers to
Order.The trip unit 60 obtains above-mentioned action command, and disconnects the switch 70 according to above-mentioned action command.
Preferably, the intelligent Type B residual current protection switch also includes voltage sensor unit 30, the voltage sensor unit
30 electrical connection microprocessors 11, the voltage sensor unit 30 monitor phase voltage in real time, and real-time to the microprocessor 11
Export phase voltage monitoring signals.When the microprocessor 11 obtains above-mentioned phase voltage monitoring signals and according to preset phase voltage
When there is abnormality in monitoring signals threshold decision phase voltage, the output action of microprocessor 11 instruction.The trip unit
60 obtain above-mentioned action command, and disconnect the switch 70 according to above-mentioned action command.
Preferably, the intelligent Type B residual current protection switch also includes current sensing unit 40, the current sensing unit
40 electrical connection microprocessors 11, the current sensing unit 40 monitor phase current in real time, and real-time to the microprocessor 11
Output current phase monitoring signals.When the microprocessor 11 obtains above-mentioned phase current monitoring signals and according to preset phase current
When there is abnormality in monitoring signals threshold decision phase current, the output action of microprocessor 11 instruction.The trip unit
60 obtain above-mentioned action command, and disconnect the switch 70 according to above-mentioned action command.
Further, the current sensing unit 30 is provided with the first current sensor 31 and the second current sensor 32.When
When the intelligent Type B residual current protection is switched for single-phase monitoring, the current sensing unit 30 need to set an electric current to pass
Sensor（First current sensor 31 or the second current sensor 32）.When the intelligent Type B residual current protection switch is used
When three-phase monitors, the current sensing unit 30 sets two current sensors simultaneously（First current sensor 31 and second
Current sensor 32）.
Preferably, the intelligent Type B residual current protection switch also includes temperature sensing unit 50, the temperature sensing unit
50 electrical connection microprocessors 11, the real-time monitoring temperature of temperature sensing unit 50, and it is real to the microprocessor 11
When output services temperature monitoring signal.When the microprocessor 11 obtains above-mentioned operating temperature monitoring signals and according to preset
When there is abnormality in operating temperature monitoring signals threshold decision operating temperature, the output action of microprocessor 11 instruction.Institute
State trip unit 60 and obtain above-mentioned action command, and the switch 70 is disconnected according to above-mentioned action command.
It is noted that a width of 1KHz of hum bar of the leakage current sensing unit 40；The microprocessor 11 can root
According to actual demand loading and preset distinct program, specific aim adaptation is carried out for all types of specifications and application.
For a person skilled in the art, the technical scheme described in foregoing embodiments can still be repaiied
Change, or equivalent substitution is carried out to which part technical characteristic, within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in protection scope of the present invention.
Claims (8)
1. a kind of intelligent Type B residual current protection switch, it is characterised in that including main control unit, leakage current sensing unit, list of threading off
Member and switch, the main control unit are provided with microprocessor and the peripheral analog circuit electrically connected with microprocessor, wherein：
The leakage current sensing unit and trip unit electrically connect microprocessor, the trip unit controlled actuation independently of each other
So that switch conduction or disconnection；
The leakage current sensing unit monitors ac and dc current simultaneously, and to the real-time output AC/DC electric current of the microprocessor
Monitoring signals；
When the microprocessor obtains above-mentioned ac and dc current monitoring signals and according to preset ac and dc current monitoring signals
When there is abnormality in threshold decision ac and dc current, the microprocessor output action instruction；
The trip unit obtains above-mentioned action command, and disconnects the switch according to above-mentioned action command.
2. intelligent Type B residual current protection switch according to claim 1, it is characterised in that the leakage current sensing unit
Pulse current is monitored simultaneously, and pulse current monitoring signals are exported in real time to the microprocessor；When the microprocessor obtains
Take above-mentioned pulse current monitoring signals and occurred according to preset friendship pulse current monitoring signals threshold decision pulse current different
During normal state, the microprocessor output action instruction；The trip unit obtains above-mentioned action command, and according to above-mentioned dynamic
Make instruction and disconnect the switch.
3. the intelligent Type B residual current protection switch according to any claim in claims 1 or 2, it is characterised in that
The intelligent Type B residual current protection switch also includes voltage sensor unit, and the voltage sensor unit electrically connects microprocessor, institute
State voltage sensor unit and monitor phase voltage in real time, and phase voltage monitoring signals are exported in real time to the microprocessor；When described
Microprocessor obtains above-mentioned phase voltage monitoring signals and occurred according to preset phase voltage monitoring signals threshold decision phase voltage
During abnormality, the microprocessor output action instruction；The trip unit obtains above-mentioned action command, and according to above-mentioned
Action command disconnects the switch.
4. the intelligent Type B residual current protection switch according to any claim in claims 1 or 2, it is characterised in that
The intelligent Type B residual current protection switch also includes current sensing unit, and the current sensing unit electrically connects microprocessor, institute
State current sensing unit and monitor phase current in real time, and to the real-time output current phase monitoring signals of the microprocessor；When described
Microprocessor obtains above-mentioned phase current monitoring signals and occurred according to preset phase current monitoring signals threshold decision phase current
During abnormality, the microprocessor output action instruction；The trip unit obtains above-mentioned action command, and according to above-mentioned
Action command disconnects the switch.
5. intelligent Type B residual current protection switch according to claim 4, it is characterised in that the current sensing unit bag
Include the first current sensor and the second current sensor.
6. intelligent Type B residual current protection switch according to claim 5, it is characterised in that when the intelligent Type B leakage current
When protection switch is used for single-phase monitoring, the current sensing unit sets the first current sensor or the second current sensor；
When the intelligent Type B residual current protection, which switchs, to be monitored for three-phase, the current sensing unit sets the first electric current to pass simultaneously
Sensor and the second current sensor.
7. the intelligent Type B residual current protection switch according to any claim in claims 1 or 2, it is characterised in that
The intelligent Type B residual current protection switch also includes temperature sensing unit, and the temperature sensing unit electrically connects microprocessor, institute
State the real-time monitoring temperature of temperature sensing unit, and to the real-time output services temperature monitoring signal of the microprocessor；When
The microprocessor obtains above-mentioned operating temperature monitoring signals and according to preset operating temperature monitoring signals threshold decision work
When there is abnormality as temperature, the microprocessor output action instruction；The trip unit obtains above-mentioned action command, and
And the switch is disconnected according to above-mentioned action command.
8. the intelligent Type B residual current protection switch according to any claim in claims 1 or 2, it is characterised in that
The a width of 1KHz of hum bar of the leakage current sensing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760539.0A CN107359593A (en) | 2017-08-30 | 2017-08-30 | Intelligent Type B residual current protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710760539.0A CN107359593A (en) | 2017-08-30 | 2017-08-30 | Intelligent Type B residual current protection switch |
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| Publication Number | Publication Date |
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| CN107359593A true CN107359593A (en) | 2017-11-17 |
Family
ID=60289669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710760539.0A Pending CN107359593A (en) | 2017-08-30 | 2017-08-30 | Intelligent Type B residual current protection switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667105A (en) * | 2018-06-29 | 2018-10-16 | 深圳巴斯巴科技发展有限公司 | A kind of earth leakage protective portable charged protective device of band Type B |
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| US20030033119A1 (en) * | 2001-08-07 | 2003-02-13 | Seung-Man Noh | Pole transformer load monitoring system using wireless internet network |
| CN104659742A (en) * | 2013-11-15 | 2015-05-27 | 西门子公司 | Residual current device |
| CN104753023A (en) * | 2013-12-31 | 2015-07-01 | 西门子公司 | Residual current protecting device |
| CN204679548U (en) * | 2015-06-16 | 2015-09-30 | 常熟开关制造有限公司(原常熟开关厂） | A kind of unicoil magnetic modulation type residual current detection device |
| CN205092562U (en) * | 2015-11-11 | 2016-03-16 | 常熟开关制造有限公司(原常熟开关厂） | Residual current protection device |
| CN106443437A (en) * | 2016-11-16 | 2017-02-22 | 浙江方圆电气设备检测有限公司 | A residual current adjusting device |
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2017
- 2017-08-30 CN CN201710760539.0A patent/CN107359593A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030033119A1 (en) * | 2001-08-07 | 2003-02-13 | Seung-Man Noh | Pole transformer load monitoring system using wireless internet network |
| CN104659742A (en) * | 2013-11-15 | 2015-05-27 | 西门子公司 | Residual current device |
| CN104753023A (en) * | 2013-12-31 | 2015-07-01 | 西门子公司 | Residual current protecting device |
| CN204679548U (en) * | 2015-06-16 | 2015-09-30 | 常熟开关制造有限公司(原常熟开关厂） | A kind of unicoil magnetic modulation type residual current detection device |
| CN205092562U (en) * | 2015-11-11 | 2016-03-16 | 常熟开关制造有限公司(原常熟开关厂） | Residual current protection device |
| CN106443437A (en) * | 2016-11-16 | 2017-02-22 | 浙江方圆电气设备检测有限公司 | A residual current adjusting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108667105A (en) * | 2018-06-29 | 2018-10-16 | 深圳巴斯巴科技发展有限公司 | A kind of earth leakage protective portable charged protective device of band Type B |
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Application publication date: 20171117 |
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