CN207939217U - A kind of CT sensing electricity getting devices with open circuit protecting function - Google Patents
A kind of CT sensing electricity getting devices with open circuit protecting function Download PDFInfo
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- CN207939217U CN207939217U CN201820310847.3U CN201820310847U CN207939217U CN 207939217 U CN207939217 U CN 207939217U CN 201820310847 U CN201820310847 U CN 201820310847U CN 207939217 U CN207939217 U CN 207939217U
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Abstract
The utility model provides a kind of CT sensing electricity getting devices with open circuit protecting function, including taking of being sequentially connected can mutual inductor, current-inducing power supply and energy storage battery；Wherein, open-circuit-protection module can be provided on mutual inductor by taking；Open-circuit-protection module includes bidirectional triode thyristor, cooling fin, the first overtemperature protector, the second overtemperature protector, the first divider resistance and the second divider resistance；Cooling fin, the first overtemperature protector and the second overtemperature protector are arranged at bidirectional triode thyristor surface；Bidirectional triode thyristor and the second overtemperature protector the first series arm in series；First divider resistance is in parallel with the progress of the first series arm again after connecting with the second divider resistance；The controlled stage of bidirectional triode thyristor is connected by the first overtemperature protector with the high-pressure side of the second divider resistance.CT sensing electricity getting devices provided by the utility model have many advantages, such as that applicable scene is wide, take electrical efficiency height, band open circuit protecting function, control defencive function is perfect, tolerance impact capacity is strong.
Description
Technical field
The utility model is related to technical field of electric power more particularly to a kind of CT inductions with open circuit protecting function to take Denso
It sets.
Background technology
The on-Line Monitor Device of existing cable circuit is required to DC power supply and is powered.Traditional solution is complete
One AC220V power cords power supply of wire routing uses solar powered.For AC220V power cord power supply modes, if circuit mistake
Long (such as 4-5 kilometers), conductor resistance can cause terminal voltage to decline, therefore AC220V power cords generally can select thicker copper to lead
Line, therefore cause economy bad, while there is also switch mis-jumping problems caused by Danger Electric shock risk, Leakage Current.For the sun
Can power supply mode, existing solar energy crystalline substance plate transfer efficiency is not high, and there are setting angle, installation site, take can time etc. it is all
More limitations, application range, power supply reliability are very limited.Therefore, it is badly in need of a kind of suitable cable run on-Line Monitor Device
Use have a wide range of application, the electricity getting device of high reliability, non-contact electric danger, to solve existing in the prior art above-mentioned ask
Topic.
Utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of with open circuit protecting function
CT sensing electricity getting devices, by the way that in taking for CT sensing electricity getting devices open-circuit-protection module realization open-circuit-protection can be increased on mutual inductor
Function.
The utility model provides a kind of CT sensing electricity getting devices with open circuit protecting function, including：What is be sequentially connected takes
It can mutual inductor, current-inducing power supply and energy storage battery；
Wherein, described take can be provided with open-circuit-protection module on mutual inductor；
The open-circuit-protection module include bidirectional triode thyristor, cooling fin, the first overtemperature protector, the second overtemperature protector,
First divider resistance and the second divider resistance；
The cooling fin, the first overtemperature protector and the second overtemperature protector are arranged at the bidirectional triode thyristor surface；
The bidirectional triode thyristor and the second overtemperature protector the first series arm in series；
First divider resistance is in parallel with the first series arm progress again after connecting with the second divider resistance；
The high-pressure side phase that the controlled stage of the bidirectional triode thyristor passes through the first overtemperature protector and second divider resistance
Connection.
CT sensing electricity getting devices provided by the utility model carry open-circuit-protection module, the module by bidirectional triode thyristor, dissipate
Backing, overtemperature protector and divider resistance are constituted.Intrinsic standoff ratio can be controlled by two divider resistance cooperations, i.e., to being added in first
By the pro rate of resistance value size, (the first divider resistance bears high voltage, to voltage on divider resistance and the second divider resistance
Two divider resistances bear low-voltage), the high-pressure side of the second divider resistance is connected with the controlled stage of bidirectional triode thyristor, when second point
When voltage on piezoresistance reaches trigger voltage, the anode and cathode of bidirectional triode thyristor is connected, and plays the role of limiting open-circuit voltage.Two
A overtemperature protector is installed in bidirectional triode thyristor surface, when the raising of bidirectional triode thyristor surface temperature, reaches two overheat protectors
When the limit temperature of device, two overtemperature protectors disconnect, and play the role of protecting bidirectional triode thyristor；When bidirectional triode thyristor surface temperature
Degree reduces, and two overtemperature protectors re-close again, and whole device enters the working condition of a new round.Meanwhile the utility model
Including energy storage battery can be used as backup power supply.
Further, described to take energy mutual inductor for detachable split structure, include at least the first seperated part and second
Seperated part；
Described first seperated part is seperated with second to be partly fixed on by anchor ear on cable run.
CT sensing electricity getting devices provided by the utility model take can mutual inductor be detachable split structure, when installation, can
To be disassembled into two parts (the i.e. first seperated part and the second seperated part), then two parts are mutually butted and close up installation,
And be fixed on cable run by anchor ear, this takes energy mutual inductor that can be installed after cable installation as a result, is not necessarily to
It is inserted in cable run in advance, further expands the scope of application of CT sensing electricity getting devices.Under normal circumstances, the first seperated part
Seperated part is semicircle with second, and the conventional circular configuration for taking energy mutual inductor can be formed after thus closing up.
Further, it is described take can mutual inductor include Flame-retardant ABS plastic shell, epoxy resin filled layer, iron core and secondary
Lead；
The epoxy resin filled layer is arranged between shell and iron core；
It is provided with sealing on the epoxy resin filled layer of the connecting portion of described first seperated part and the second seperated part
Pad and capillary groove；
Unilateral coil windings are provided on the iron core, the coil windings are connected with the open-circuit-protection module；
The open-circuit-protection module and electric current transducing unit are connected with the secondary lead wires.
It takes energy transformer casing to use Flame-retardant ABS plastic in the utility model, and is provided between shell and iron core
The good epoxy resin filled layer of fire-retardant and insulation performance, disclosure satisfy that the flame-retardant standard of VO ranks.Meanwhile in each fission portion
Divide interconnecting piece to be provided with the waterproofing design being made of gasket and capillary groove, disclosure satisfy that the water protection standards of IP68 ranks, effectively
Avoid the influence that iron core damage and iron core get rusty to taking electrical efficiency caused by being got rusty by iron core.First seperated part for convenience
It is partially separated and combines with the second fission, the utility model is only arranged on the first seperated part or the second seperated part unilateral
Coil windings.Meanwhile by taking and secondary lead wires can be arranged on mutual inductor, and secondary lead wires are accessed to the electricity of current-inducing power supply
Transducing unit is flowed, can make that energy mutual inductor is taken to realize to cable run running current (i.e. primary current) while realization takes energy
Measurement.
Further, the current-inducing power supply include electric current transducing unit, rectification unit, buffer cell, control unit,
Protection location, energy storage battery administrative unit, output unit and Alarm Unit；
The electric current transducing unit, rectification unit and buffer cell are sequentially connected；
The energy storage battery administrative unit and output unit are connected with the buffer cell；
The rectification unit, buffer cell, energy storage battery administrative unit, output unit and Alarm Unit with the control
Unit processed is connected；
The electric current transducing unit and output unit are connected with protection location.
In the utility model, the input terminal of electric current transducing unit is connected with energy mutual inductor is taken, for taking
The electric energy of energy mutual inductor output；The output end of energy storage battery administrative unit is connected with energy storage battery, passes through energy storage electric power storage
Pond administrative unit acquires all kinds of voltage and current signals, drives battery management unit by control unit outputs level signals, realizes
The management function of energy storage battery, can be to the charging current of energy storage battery, discharge current, charging voltage, discharge voltage, floating charge
The parameters such as voltage are controlled and are managed, and are realized current-limiting charge with this, trickle charge, Cross prevention (under-voltage protection), are overcharged guarantor
The functions such as shield；The output end of output unit is connected with power load, and the output end of Alarm Unit is connected with secondary acquisition equipment
It connects, for sending out the alarm of running current deficiency or the alarm of energy storage battery low-voltage.
Further, the protection location includes the first resettable fuse, the second resettable fuse, the first pressure-sensitive electricity
Resistance, the second varistor, third varistor, the first inductance and the second inductance；
Wherein, first resettable fuse is connected with the first inductance, second resettable fuse and the second electricity
Sense series connection；
First varistor connects to form the second series arm with third varistor, second varistor with
Second series arm is in parallel, first varistor and third varistor ground connection；
One end of first varistor is connected with the high-pressure side of the first resettable fuse, the first varistor
The other end is connected with third varistor, one end of the third varistor and the low-pressure end phase of the second resettable fuse
Connection.
In the present invention, protection location is made of resettable fuse, varistor, inductance, to realize that CT feels
Answer tolerance of the electricity getting device to the heavy current impact of cable run 31.5kA 2S.Specifically, when high current occurs for cable run
When impact, power inlet generates overvoltage, and when reaching the action threshold voltage of three varistors, three varistors are dynamic
It is connected, overvoltage is released to the earth.When power inlet generates overcurrent, if overcurrent size is more than that can restore to insure
The through-flow limit of silk, resettable fuse disconnects, to protect the safety of rear end electrical equipment；It can restore to insure after a period of time
Silk cools down again, becomes conducting state.Meanwhile will produce high frequency spurs signal when heavy current impact, low frequency resistance is led to by inductance
The characteristic of high frequency, is obstructed.
Further, the output unit includes Hall current sensor, sampling resistor, voltage comparator and triode；
Wherein, the input winding of the Hall current sensor is used for the size of current of acquisition buffer unit output, output
Winding is connected with sampling resistor, and sampling resistor is in parallel with voltage comparator, and the controlled stage of triode is connected with voltage comparator
It connects.
In the present invention, output unit includes Hall current sensor, sampling resistor, voltage comparator and three poles
Pipe, may be implemented the short-circuit protection function of output end, power supply caused by avoiding output terminal shortcircuit or load damage.Specifically,
The size of current of the input winding acquisition buffer unit output of Hall current sensor, output winding are connected with sampling resistor,
Current signal is converted into voltage signal by sampling resistor, by the sampled voltage signal input voltage comparator (such as model
LM393 voltage comparators), by being compared with preset reference voltage：If sampled voltage signal is more than reference voltage,
Show that the electric current of buffer cell output is bigger than normal, the output end of voltage comparator exports high level signal at this time, drives triode (example
Such as S8050 triodes) cut-out output, to realize short-circuit protection function.
Further, the electric current transducing unit is current transducer；
The rectification unit is rectifier bridge；
The buffer cell is large capacity electric double layer electrolytic capacitor；
Described control unit is microcontroller；
The energy storage battery administrative unit is battery management chip；
The Alarm Unit is electromagnetic type relay or triode.
Specifically, in the present invention, electric current transducing unit may be used commercially available conventional current transmitter and realize.It is whole
Stream unit may be used commercially available conventional rectification bridge and realize.It is real that commercially available large capacity electric double layer electrolytic capacitor may be used in buffer cell
It is existing.Commercially available microcontroller (such as STM32F103C8T6) realization may be used in control unit.Energy storage battery administrative unit can adopt
It is realized with commercially available battery management chip (such as bq26500).Alarm Unit may be used commercially available electromagnetic type relay (such as
SLA-12VDC-SL-A) or triode (such as S8050) is realized.
Advantageous effect
The utility model provides a kind of CT sensing electricity getting devices with open circuit protecting function, solves in the prior art
The problem of AC220V power cord way to take power economy is low, safety is low, reliability is low, line insulation layer long-time aging, together
When also solve solar energy way to take power take can efficiency it is low, and be illuminated by the light intensity, setting angle, installation site, usage time
Etc. factors influence big problem.CT sensing electricity getting devices provided by the utility model are provided with open circuit protecting function, have and are suitble to
Installation scenario is extensive, takes high electrical efficiency, band open circuit protecting function, controls the advantages that defencive function is perfect, tolerance impact capacity is strong.
Description of the drawings
Fig. 1 is that a kind of structure for CT sensing electricity getting devices with open circuit protecting function that the utility model embodiment provides is shown
It is intended to；
Fig. 2 is that a kind of open circuit for CT sensing electricity getting devices with open circuit protecting function that the utility model embodiment provides is protected
Protect modular circuit structure chart；
Fig. 3 is that a kind of taking for CT sensing electricity getting devices with open circuit protecting function that the utility model embodiment provides can be mutually
Sensor structural schematic diagram；
Fig. 4 is a kind of electric current sense for CT sensing electricity getting devices with open circuit protecting function that the utility model embodiment provides
Answer the schematic diagram of power supply；
Fig. 5 is a kind of protection list for CT sensing electricity getting devices with open circuit protecting function that the utility model embodiment provides
First circuit structure diagram；
Fig. 6 is a kind of output list for CT sensing electricity getting devices with open circuit protecting function that the utility model embodiment provides
First circuit structure diagram.
Specific implementation mode
The content for further understanding the utility model for convenience is explained in detail with reference to specific embodiment
It states.
Fig. 1 shows a kind of structure of CT sensing electricity getting devices with open circuit protecting function provided in this embodiment, including：
Taking for being sequentially connected can mutual inductor 100, current-inducing power supply 200 and energy storage battery 300；Wherein, described to take on energy mutual inductor
It is provided with open-circuit-protection module 109 (as shown in Figure 3)；As shown in Fig. 2, the open-circuit-protection module 109 includes bidirectional triode thyristor
110, cooling fin 120, the first overtemperature protector 131, the second overtemperature protector 132, the first divider resistance 141 and second partial pressure electricity
Resistance 142；The cooling fin 120, the first overtemperature protector 131 and the second overtemperature protector 132 are arranged at described two-way controllable
110 surface of silicon；132 first series arm in series of the bidirectional triode thyristor 110 and the second overtemperature protector；Described first
Divider resistance 141 is in parallel with the first series arm progress again after connecting with the second divider resistance 142；The bidirectional triode thyristor
110 controlled stage is connected by the first overtemperature protector 131 with the high-pressure side of second divider resistance 142.Pass through two
Divider resistance cooperation can control intrinsic standoff ratio, i.e., big by resistance value to being added in the voltage on the first divider resistance and the second divider resistance
Small pro rate (the first divider resistance bears high voltage, the second divider resistance bears low-voltage), the height of the second divider resistance
Pressure side is connected with the controlled stage of bidirectional triode thyristor, two-way controllable when the voltage on the second divider resistance reaches trigger voltage
The anode and cathode of silicon is connected, and plays the role of limiting open-circuit voltage.Two overtemperature protectors are installed in bidirectional triode thyristor surface, when
Bidirectional triode thyristor surface temperature increases, and when reaching the limit temperature of two overtemperature protectors, two overtemperature protectors disconnect, and play
Protect the effect of bidirectional triode thyristor；When bidirectional triode thyristor surface temperature reduces, two overtemperature protectors re-close again, entire to fill
Set the working condition into a new round.Meanwhile the energy storage battery that the present embodiment includes can be used as backup power supply.
As shown in figure 3, described take energy mutual inductor for detachable split structure, the first 1001 He of seperated part is included at least
Second seperated part 1002；Described first 1001 part 1002 seperated with second of seperated part is fixed on cable by anchor ear 105
On circuit.It can be disassembled into two parts (1001 and second seperated part 1002 of the i.e. first seperated part) when installation, then will
Two parts, which are mutually butted, closes up installation.This takes energy mutual inductor that can be installed after cable installation as a result, without pre-
It is first inserted in cable run, further expands the scope of application of CT sensing electricity getting devices.
Meanwhile it is described take can mutual inductor include Flame-retardant ABS plastic shell 101, epoxy resin filled layer 102,103 and of iron core
Secondary lead wires 104；The epoxy resin filled layer 102 is arranged between shell 101 and iron core 103；Described first seperated part
1001 and/or second the connecting portion of seperated part 1002 (be only the company of the second seperated part 1002 shown in this example Fig. 3
Socket part position) epoxy resin filled layer 102 on be provided with gasket 106 and capillary groove 107；It is provided with list on the iron core 103
Side coil windings 108, the unilateral coil windings 108 are connected with the open-circuit-protection module 109；The open-circuit-protection module
109 and the electric current transducing unit be connected with the secondary lead wires 104.Specifically, this takes energy transformer casing to use
Flame-retardant ABS plastic, and the good epoxy resin filled layer of fire-retardant and insulation performance, Neng Gouman are provided between shell and iron core
The flame-retardant standard of sufficient VO ranks.Meanwhile each seperated part interconnecting piece being provided with the waterproof being made of gasket and capillary groove
Design, disclosure satisfy that the water protection standards of IP68 ranks, effectively prevents iron core damage and iron core caused by being got rusty by iron core and gets rusty
To taking the influence of electrical efficiency.Meanwhile the secondary lead wires being accessed to the electric current transducing unit of current-inducing power supply, it can make to take energy mutually
Sensor realizes the measurement to cable run running current (i.e. primary current) while realization takes energy.
As shown in figure 4, current-inducing power supply 200 include electric current transducing unit 210, rectification unit 220, buffer cell 230,
Control unit 240, protection location 250, energy storage battery administrative unit 260, output unit 270 and Alarm Unit 280；The electricity
Stream transducing unit 210, rectification unit 220 and buffer cell 230 are sequentially connected；The energy storage battery administrative unit 260 and defeated
Go out unit 270 to be connected with the buffer cell 230；The rectification unit 220, buffer cell 230, energy storage battery management
Unit 260, output unit 270 and Alarm Unit 280 are connected with described control unit 240；The electric current transducing unit 210
It is connected with protection location 250 with output unit 270.The input terminal of electric current transducing unit is connected with energy mutual inductor is taken, and uses
In the electric energy for taking energy mutual inductor output；The output end of energy storage battery administrative unit is connected with energy storage battery, passes through
Energy storage battery administrative unit acquires all kinds of voltage and current signals, and battery management list is driven by control unit outputs level signals
Member realizes the management function of energy storage battery, can be to the charging current of energy storage battery, discharge current, charging voltage, electric discharge electricity
The parameters such as pressure, float charge voltage are controlled and are managed, with this realize current-limiting charge, trickle charge, Cross prevention (under-voltage protection),
Overcharge the functions such as protection；The output end of output unit is connected with power load, and output end and the secondary acquisition of Alarm Unit are set
It is standby to be connected, alert (example for sending out running current deficiency alarm (such as OV1 outputs in figure) or energy storage battery low-voltage
OV2 outputs in such as figure).
In this example, current-inducing power supply 200 include multiple electric current transducing units 210, each electric current transducing unit with
One takes energy mutual inductor to be connected, and therefore, those skilled in the art can flexibly determine electric current transducing unit according to actual demand
Number, to realize it is multiple take can mutual inductor connections, to adapt to different application scenarios.
As shown in figure 5, protection location 250 includes the first resettable fuse 251, the second resettable fuse 252, first
Varistor 253, the second varistor 254, third varistor 255, the first inductance 256 and the second inductance 257；Wherein, institute
It states the first resettable fuse 251 and connects 256 with the first inductance, second resettable fuse, 252 and second inductance 257
Series connection；First varistor 253 is connected with third varistor 255 forms the second series arm, the second pressure-sensitive electricity
Resistance 254 is in parallel with second series arm, and first varistor 253 and third varistor 255 are grounded；Described first
One end of varistor 253 is connected with the high-pressure side of the first resettable fuse 251, the other end of the first varistor 253
It is connected with third varistor 255, the low pressure of one end of the third varistor 255 and the second resettable fuse 252
End is connected.As can be seen that protection location is made of resettable fuse, varistor, inductance, to realize that CT inductions take electricity
Tolerance of the device to the heavy current impact of cable run 31.5kA 2S.Specifically, when heavy current impact occurs for cable run
When, power inlet generates overvoltage, and when reaching the action threshold voltage of three varistors, three varistor actions are led
It is logical, overvoltage is released to the earth.When power inlet generates overcurrent, if overcurrent size is more than resettable fuse
The through-flow limit, resettable fuse disconnects, to protect the safety of rear end electrical equipment；Resettable fuse weight after a period of time
It is new cooling, become conducting state.Meanwhile will produce high frequency spurs signal when heavy current impact, leading to low frequency by inductance hinders high frequency
Characteristic obstructed.
As shown in fig. 6, the output unit 270 includes Hall current sensor 271, sampling resistor 272, voltage comparator
273 and triode；Wherein, the input winding of the Hall current sensor 271 is big for the electric current of acquisition buffer unit output
Small, output winding is connected with sampling resistor 272, and sampling resistor 272 is in parallel with voltage comparator 273, the controlled stage of triode
It is connected with voltage comparator 273.The short-circuit protection function of output end may be implemented in the output unit, and output terminal shortcircuit is avoided to make
At power supply or load damage.Specifically, the electric current of the input winding acquisition buffer unit output of Hall current sensor is big
Small, output winding is connected with sampling resistor, and current signal is converted into voltage signal by sampling resistor, by the sampled voltage signal
Input voltage comparator (such as model LM393 voltage comparators), by being compared with preset reference voltage V r：
If sampled voltage signal is more than reference voltage V r, show that the electric current of buffer cell output is bigger than normal, the output of voltage comparator at this time
OUT is held to export high level signal, driving triode (such as S8050 triodes) cuts off output, to realize short-circuit protection work(
Energy.
Specifically, in the present embodiment, the electric current unit that fluffs may be used commercially available conventional current transmitter and realize.Rectification
Unit may be used commercially available conventional rectification bridge and realize.Buffer cell may be used commercially available large capacity electric double layer electrolytic capacitor and realize.
Commercially available microcontroller (such as STM32F103C8T6) realization may be used in control unit.Energy storage battery administrative unit may be used
Commercially available battery management chip (such as bq26500) is realized.Alarm Unit may be used commercially available electromagnetic type relay (such as
SLA-12VDC-SL-A) or triode (such as S8050) is realized.
In conclusion the utility model provides a kind of CT sensing electricity getting devices with open circuit protecting function, solve existing
Have in technology that AC220V power cords way to take power economy is low, safety is low, reliability is low, line insulation layer long-time aging
Problem, while also solving solar energy way to take power and taking energy efficiency low, and be illuminated by the light intensity, setting angle, installation site, make
Big problem is influenced with factors such as times.CT sensing electricity getting devices provided by the utility model are provided with open circuit protecting function, tool
Be adapted to fit scene extensively, take that electrical efficiency high, band open circuit protecting function, control defencive function is perfect, tolerance impact capacity is strong
The advantages that.
The above description is only the embodiments of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, change, equivalent replacement, improvement etc., should be included in the protection model of the utility model
Within enclosing.
Claims (7)
1. a kind of CT sensing electricity getting devices with open circuit protecting function, which is characterized in that including：Taking for being sequentially connected can mutual inductance
Device, current-inducing power supply and energy storage battery；
Wherein, described take can be provided with open-circuit-protection module on mutual inductor；
The open-circuit-protection module includes bidirectional triode thyristor, cooling fin, the first overtemperature protector, the second overtemperature protector, first
Divider resistance and the second divider resistance；
The cooling fin, the first overtemperature protector and the second overtemperature protector are arranged at the bidirectional triode thyristor surface；
The bidirectional triode thyristor and the second overtemperature protector the first series arm in series；
First divider resistance is in parallel with the first series arm progress again after connecting with the second divider resistance；
The controlled stage of the bidirectional triode thyristor is connected by the first overtemperature protector with the high-pressure side of second divider resistance.
2. the apparatus according to claim 1, which is characterized in that it is described to take energy mutual inductor for detachable split structure, until
Include the first seperated part and the second seperated part less；
Described first seperated part is seperated with second to be partly fixed on by anchor ear on cable run.
3. the apparatus of claim 2, which is characterized in that it is described take can mutual inductor include Flame-retardant ABS plastic shell, ring
Oxygen resin filling layer, iron core and secondary lead wires；
The epoxy resin filled layer is arranged between shell and iron core；
It is provided with gasket on the epoxy resin filled layer of the connecting portion of described first seperated part and/or the second seperated part
And capillary groove；
Unilateral coil windings are provided on the iron core, the coil windings are connected with the open-circuit-protection module；
The open-circuit-protection module and electric current transducing unit are connected with the secondary lead wires.
4. device according to claim 3, which is characterized in that the current-inducing power supply includes electric current transducing unit, whole
Flow unit, buffer cell, control unit, protection location, energy storage battery administrative unit, output unit and Alarm Unit；
The electric current transducing unit, rectification unit and buffer cell are sequentially connected；
The energy storage battery administrative unit and output unit are connected with the buffer cell；
The rectification unit, buffer cell, energy storage battery administrative unit, output unit and Alarm Unit are single with the control
Member is connected；
The electric current transducing unit and output unit are connected with protection location.
5. device according to claim 4, which is characterized in that the protection location includes the first resettable fuse, the
Two resettable fuses, the first varistor, the second varistor, third varistor, the first inductance and the second inductance；
Wherein, first resettable fuse is connected with the first inductance, second resettable fuse and the second inductance string
Connection；
First varistor connects to form the second series arm with third varistor, second varistor with it is described
Second series arm is in parallel, first varistor and third varistor ground connection；
One end of first varistor is connected with the high-pressure side of the first resettable fuse, the first varistor it is another
End is connected with third varistor, and one end of the third varistor is connected with the low-pressure end of the second resettable fuse
It connects.
6. device according to claim 5, which is characterized in that the output unit includes Hall current sensor, sampling
Resistance, voltage comparator and triode；
Wherein, the input winding of the Hall current sensor is used for the size of current of acquisition buffer unit output, exports winding
It is connected with sampling resistor, sampling resistor is in parallel with voltage comparator, and the controlled stage of triode is connected with voltage comparator.
7. device according to claim 6, which is characterized in that the electric current transducing unit is current transducer；
The rectification unit is rectifier bridge；
The buffer cell is large capacity electric double layer electrolytic capacitor；
Described control unit is microcontroller；
The energy storage battery administrative unit is battery management chip；
The Alarm Unit is electromagnetic type relay or triode.
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| CN201820310847.3U CN207939217U (en) | 2018-03-07 | 2018-03-07 | A kind of CT sensing electricity getting devices with open circuit protecting function |
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| CN201820310847.3U CN207939217U (en) | 2018-03-07 | 2018-03-07 | A kind of CT sensing electricity getting devices with open circuit protecting function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786454A (en) * | 2020-06-24 | 2020-10-16 | 江苏达伦电子股份有限公司 | Control system of lamp light source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786454A (en) * | 2020-06-24 | 2020-10-16 | 江苏达伦电子股份有限公司 | Control system of lamp light source |
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Address after: 410000 No. 223, tongzipo West Road, Lugu Industrial Park, high tech Development Zone, Changsha, Hunan Patentee after: Long Cable Technology Group Co.,Ltd. Country or region after: China Address before: No. 223 Tongzipo West Road, Lugu Industrial Park, High tech Zone, Changsha City, Hunan Province, 410205 Patentee before: CHANGLAN CABLE ACCESSORIES Co.,Ltd. Country or region before: China |