CN208506145U - A kind of high resistive fault detector - Google Patents
A kind of high resistive fault detector Download PDFInfo
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- CN208506145U CN208506145U CN201721653997.6U CN201721653997U CN208506145U CN 208506145 U CN208506145 U CN 208506145U CN 201721653997 U CN201721653997 U CN 201721653997U CN 208506145 U CN208506145 U CN 208506145U
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- high pressure
- voltage
- fault detector
- resistive fault
- pressure generator
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Abstract
The utility model provides a kind of high resistive fault detector, judging automatically with electrical equipment malfunction and warning function, comprising: built-in rechargeable lithium battary；It is connected with lithium battery, DC low-voltage can be converted to the high pressure generator of high direct voltage；Adjustable divider resistance is connected in the circuit of high pressure generator；The low-voltage control circuit being connected with high pressure generator；It is installed on the digital display control operation panel of high resistive fault detector outer surface, is connected respectively with the lithium battery, the high pressure generator and the low-voltage control circuit；Output port of the high-voltage connection terminal as high pressure generator.The detector is convenient for carrying, it can be achieved that output voltage is continuously adjustable, can quickly be detected high and low pressure electrical equipment malfunction hidden danger, to reduce the probability of line tripping, be improved the power quality of user.
Description
Technical field
The utility model relates to electrical equipment malfunction detection field more particularly to a kind of high resistive fault detectors.
Background technique
Demand of the today's society to electric power has become for the most important life requirement of resident, and reliable and stable power supply system can
So that quality of residents'life greatly improves, it also can avoid more livelihood issues and occur.But the electrical equipment in electric system
It often will appear many potential faults inconspicuous, from the point of view of Shenzhen Futian power supply bureau data in 2016, just go out in 1 year
Show 99 10kV line trippings, wherein having 12 failures is cable high resistive fault (high resistive fault is presented as that fault current is small),
Existing common megger means can not effectively detect faulty line, be only capable of detecting fault wire in such a way that application scheduling examination is sent
Road, which results in the events that tripping is repeated several times, and significantly impact power supply reliability and user's household electricity, return use
Cause the influence having a power failure again in family.Meanwhile during examination is sent, substation's 10kV bus may be led to since switch evidence is dynamic in standing
Decompression.
It is directed to high resistive fault at present, traditional way is to carry out pressurization using the big part pressure-resistant equipment such as detection of cable fault vehicle
On-site test, such work and its inconvenience, while being possible to delay electric power feeding time.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of high resistive fault detector, being convenient for carrying can be with
When detect electrical equipment everywhere with the presence or absence of potential faults.
In order to solve the above-mentioned technical problem, the utility model provides a kind of high resistive fault detector, has electrical equipment event
Barrier judge automatically and warning function, comprising:
Built-in rechargeable lithium battary is as detection working power；
It is connected with the lithium battery, DC low-voltage can be converted to the high pressure generator of high direct voltage；The high pressure occurs
Adjustable divider resistance is connected in the circuit of device；
The low-voltage control circuit being connected with the high pressure generator；
Be installed on high resistive fault detector outer surface digital display control operation panel, respectively with the lithium battery, institute
It states high pressure generator and the low-voltage control circuit is connected；
High-voltage connection terminal is set on digital display control operation panel, the output port as the high pressure generator.
In an alternate embodiment of the invention, setting charging terminal on the battery operation space of a whole page of the digital display control operation panel can be external
Charging adapter charges to the lithium battery, if electricity display screen shows the real time electrical quantity of the lithium battery.
In an alternate embodiment of the invention, the high voltage control space of a whole page of the digital display control operation panel sets switch knob, for opening
Move the boost action inside the high resistive fault detector.
In an alternate embodiment of the invention, the high voltage control space of a whole page sets the high pressure number that high pressure adjustment knob is used to set output
Value connects by adjusting the resistance value size of adjustable divider resistance to control the high pressure of the high pressure generator output
Continue adjustable；The high pressure adjustment knob has zero-bit blocking function, passes through the zero position protection circuit built in the high pressure generator
Realize zero-bit locking, i.e., in the original state of detection, if high pressure adjustment knob is not in zero-bit, the switch knob without
Method starts boost action.
In an alternate embodiment of the invention, the continuously adjustable value range of the high pressure of the high pressure generator output is 0-12KV.
In an alternate embodiment of the invention, the high voltage control space of a whole page sets time adjustment screen, resistance in detection work for setting
Press test period.
In an alternate embodiment of the invention, the high pressure monitoring space of a whole page of the digital display control operation panel sets voltage display unit, electricity
Flow display unit, time display unit and overcurrent indicator light；The voltage display unit shows current high direct voltage output valve；
The current displaing unit shows current average anode current；The time display unit show preset output voltage values,
Preset pressure test time numerical value and reach the number of the timer time after pre-set output voltage value.
In an alternate embodiment of the invention, voltage current shown by the voltage display unit and the current displaing unit
It is provided with current values by the Hall sensor for being connected to the high pressure generator output end.
In an alternate embodiment of the invention, the output current protection setting value of the high resistive fault detector is 5mA, when maximum defeated
After electric current reaches 5mA out, the overcurrent indicator light is lighted, and detector automatic trip is protected.
In an alternate embodiment of the invention, the high resistive fault detector uses vertical chassis structure, can be placed on bracket.
In an alternate embodiment of the invention, the electrical equipment includes: power cable, transformer and switchgear.
The beneficial effect of the utility model embodiment is: the high resistive fault detector of the utility model, on the one hand can be real
Existing output voltage is continuously adjustable, is able to satisfy used in the detection of high and low pressure electrical equipment；On the one hand, there is Current Voltage display function,
The probability that testing staff judges failure by accident can be reduced；On the one hand, output end is only connecting terminal, can avoid going out in troubleshooting process
Existing personal safety accident；On the one hand, it is convenient for carrying using the power supply of lithium electricity, can quickly detect and be out of order, reduce route
The probability of tripping improves the power quality of user.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of illustrative view of functional configuration of one embodiment of high resistive fault detector of the utility model.
Fig. 2 is a kind of one embodiment mesohigh generator circuit schematic diagram of high resistive fault detector of the utility model.
Specific embodiment
The explanation of following embodiment be with reference to attached drawing, can be to the particular implementation implemented to example the utility model
Example.
The utility model provides a kind of high resistive fault detector, the function that judges automatically and alarm with electrical equipment malfunction
Can, structure is divided by function as shown in Figure 1, can include:
Be installed on detector outer surface digital display control operation panel 0 and detector inside lithium battery 1, high pressure
Raw device 2, low-voltage control circuit 3.
Wherein, the digital display control operation panel 0 can be divided by function for the high voltage control space of a whole page 4, high pressure monitor the space of a whole page 5 and
Battery operates the space of a whole page 6.In the present embodiment, in order to preferably illustrate the various functions of digital display control operation panel 0 therefore according to function
It can be classified as above 3 spaces of a whole page and name, this digital display can also be controlled in other ways in other embodiments certainly
Operation panel 0 carries out dividing the space of a whole page and name still will not influence the various functions of its realization.It is provided with not on each space of a whole page
Same function button, display unit and port, set-up mode are as follows:
Power switch 41, switch knob 42, opening button 43, time adjustment screen 44 are provided on the high voltage control space of a whole page 4
And high pressure adjusts button 45；
High pressure monitoring the space of a whole page 5 on be provided with voltage display unit 51, current displaing unit 52, time display unit 53 with
And overcurrent instruction etc. 54；
Electricity display screen 61, charging instruction 62 and charging terminal 63 are provided on the battery operation space of a whole page 6；
The ground connection end connecting terminal 71(abbreviation E is additionally provided on digital display control operation panel 0) and high-voltage connection terminal
The end 72(abbreviation L).
Wherein, lithium battery 1 operates 6 phase of the space of a whole page with the battery on digital display control operation panel 0 as the power supply of detection work
Even.The lithium battery 1 is rechargeable lithium battary, can be charged by the external AC power source of charging terminal 63；When charging, charging
Instruction 62 is in illuminating state；The electricity of the lithium battery 1 can real-time display on electricity display screen 61.In the present embodiment, may be used
Select the lithium battery of 24V.
Wherein, high pressure generator 2 is connected with lithium battery 1, can carry out the DC low-voltage of lithium battery 1 to boost to 10KV-
The negative dc high voltage of 12KV, then the electrical equipment external with the high-voltage connection terminal 72 is output to by high-voltage connection terminal 72
It is interior, if in the electrical equipment there are rejected region if will appear disruptive discharge phenomenon.
Wherein, high pressure generator 2 is also connected with the high pressure monitoring space of a whole page 5, and 51 real-time display high pressure of voltage display unit occurs
The DC current of the high direct voltage output valve of 2 output end of device, 52 real-time display high pressure generator of current displaing unit, 2 output end is defeated
It is worth out.In the present embodiment, the numerical value of DC voltage and DC current can be passed by the Hall for being inscribed in 2 output end of high pressure generator
Sensor (not marking), which obtains, to be provided.Certainly in other alternative-embodiments, the data acquisition of the voltage and current can be it
His mode (such as the measuring instrumentss such as voltmeter, ammeter).
Wherein, the high voltage control space of a whole page 4 is connected by low-voltage control circuit 3 with high pressure generator 2, to control high pressure
Device work.Power switch 41 is the total power switch of the detector, the work electricity output for on-off lithium battery 1；Combined floodgate is pressed
Button 42 carries out boost action for starting high pressure generator；Separating brake key 43 disconnects high pressure generator for detecting work after the completion
2 power input；High pressure adjustment knob 45 is used to set the size of the voltage of the output of high pressure generator 2, and high pressure adjustment rotation
There is button 45 zero-bit blocking function (i.e. in the original state of detection, if high pressure adjustment knob 45 is not in zero-bit, to close
Lock button 42 can not start high pressure generator 2 and boost), also protect operator's in order to ensure that the detector is not impaired
Safety；The output high pressure of the detector be it is continuously adjustable, pass through high pressure and adjust the electricity that knob 45 adjusts adjustable divider resistance R2
Resistance value size realizes that the adjustable divider resistance R2 is inscribed on the circuit of high pressure generator 2 (as shown in Figure 2)；In this implementation
In example, the voltage of the high pressure generator 2 output is continuously adjusted in the range of 0-12KV.It certainly in other embodiments, can root
Adjustable divider resistance, which is replaced, according to actual demand realizes that the output voltage of different range is continuously adjustable.In the high voltage control space of a whole page 4
On be additionally provided with time adjustment screen, electrical equipment is carried out for setting detector the time of pressure test, when set
Between numerical value and the voltage value of setting can be shown on the time display unit 53 of the high pressure monitoring space of a whole page 5；And work as high pressure
When the voltage that raw device 2 exports reaches preset voltage, time-second counting can be started, on time display unit 53 clearly to react
The duration that the test carries out.
In addition, the detector has overcurrent protection function, after maximum output current reaches 5mA, 54 points of overcurrent indicator light
Bright, detector automatic trip is protected.Ground connection connecting terminal 71 can carry out ground connection operation when detecting working condition.
In the present embodiment, which uses vertical chassis structure, is mountable on bracket, for detecting 10KV transmission of electricity
The potential faults of cable.Certainly in other alternative-embodiments, which can be used for detecting power cable, becomes
The potential faults of the electrical equipments such as depressor and switchgear.
As an example, the use step of the high resistive fault detector is introduced briefly below:
1, place is set by related regulation, test product (each electrical equipment) is substantially discharged.
2, equipment line is connected, L terminated line is connected to product to be tested, E terminated line is connected to the earth or insulator etc. (depending on test
Depending on type cases).
3, according to the capacity of product to be tested and voltage class, voltage value (V) and the examination of the output of high resistive fault detector are set
Test the time (s).
4, power turn-on switch 41 presses switch knob 42, and voltage gradually rises, and stops boosting simultaneously after setting value to be achieved
Start timing, can be tested at this time.
5, high pressure adjustment knob 45 can be adjusted in experimentation as needed to be boosted, be depressured.
6,5mA current protection is set, during test after maximum output current reaches 5mA, equipment automatic protection, overcurrent
Indicator light is bright.
7, operations staff can be judged tested by real time value shown by voltage display unit 51, current displaing unit 52
Test product insulation situation.
8, after testing, adjustment high pressure adjustment knob 45 presses opening button 43 to zero-bit.
9, product to be tested is carried out being substantially discharged the dismountable wiring in rear.
10,41 are turned off the power switch.
By above description it is found that the beneficial effect of the utility model embodiment is: the high resistive fault of the utility model
On the one hand detector can be achieved output voltage and be continuously adjusted, is able to satisfy used in the detection of high and low pressure electrical equipment；On the one hand, have
Current Voltage display function can reduce the probability that testing staff judges failure by accident；On the one hand, output end is only connecting terminal, can be kept away
Exempt from occur personal safety accident in troubleshooting process；On the one hand, it is convenient for carrying, can quickly be detected using the power supply of lithium electricity
It is out of order, reduces the probability of line tripping, improve the power quality of user.
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (9)
1. a kind of high resistive fault detector, judging automatically with electrical equipment malfunction and warning function, which is characterized in that packet
It includes:
Built-in rechargeable lithium battary is as detection working power；
It is connected with the lithium battery, DC low-voltage can be converted to the high pressure generator of high direct voltage；The high pressure generator
Adjustable divider resistance is connected in circuit；
The low-voltage control circuit being connected with the high pressure generator；
Be installed on high resistive fault detector outer surface digital display control operation panel, respectively with the lithium battery, the height
Generator and the low-voltage control circuit is pressed to be connected；
High-voltage connection terminal is set on digital display control operation panel, the output port as the high pressure generator；
Wherein, the high voltage control space of a whole page of the digital display control operation panel sets switch knob, for starting the high resistive fault inspection
Survey the boost action inside instrument；
The high voltage control space of a whole page sets the high pressure numerical value that high pressure adjustment knob is used to set output, by adjusting described adjustable
The resistance value size of divider resistance is continuously adjustable to the high pressure for controlling the high pressure generator output；The high pressure adjusts knob
With zero-bit blocking function, zero-bit locking is realized by the zero position protection circuit built in the high pressure generator, i.e., in detection
Original state, if high pressure adjustment knob is not in zero-bit, the switch knob can not start boost action；
The high pressure monitoring space of a whole page of the digital display control operation panel is described at least provided with voltage display unit, current displaing unit
Voltage display unit shows current high direct voltage output valve；The current displaing unit shows current average anode current.
2. high resistive fault detector according to claim 1, which is characterized in that the battery of the digital display control operation panel
Set on the operation space of a whole page charging terminal can external charge adapter charge to the lithium battery, if described in electricity display screen shows
The real time electrical quantity of lithium battery.
3. high resistive fault detector according to claim 2, which is characterized in that the high pressure of the high pressure generator output connects
Continuing adjustable value range is 0-12KV.
4. high resistive fault detector according to claim 3, which is characterized in that the high voltage control space of a whole page sets time adjustment
Screen, for setting the pressure test time in detection work.
5. high resistive fault detector according to claim 4, which is characterized in that the high pressure of the digital display control operation panel
The monitoring space of a whole page, which is set, is additionally provided with time display unit and overcurrent indicator light；The time display unit shows preset output voltage
Value, preset pressure test time numerical value and reach the number of the timer time after pre-set output voltage value.
6. high resistive fault detector according to claim 5, which is characterized in that the voltage display unit and the electric current
Current voltage and current numerical value is by the hall sensing for being connected to the high pressure generator output end shown by display unit
Device provides.
7. high resistive fault detector according to claim 6, which is characterized in that the output electricity of the high resistive fault detector
Stream protection setting value be 5mA, after maximum output current reaches 5mA, the overcurrent indicator light is lighted, detector automatic trip into
Row protection.
8. high resistive fault detector according to claim 1, which is characterized in that the high resistive fault detector is using vertical
Casing structure can be placed on bracket.
9. high resistive fault detector according to claim 1, which is characterized in that the electrical equipment include: power cable,
Transformer and switchgear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721653997.6U CN208506145U (en) | 2017-12-02 | 2017-12-02 | A kind of high resistive fault detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721653997.6U CN208506145U (en) | 2017-12-02 | 2017-12-02 | A kind of high resistive fault detector |
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| Publication Number | Publication Date |
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| CN208506145U true CN208506145U (en) | 2019-02-15 |
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| CN201721653997.6U Active CN208506145U (en) | 2017-12-02 | 2017-12-02 | A kind of high resistive fault detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082624A (en) * | 2019-05-22 | 2019-08-02 | 广西电友科技发展有限公司 | Instrument and examination delivery method are sent in a kind of examination of intelligent DC |
-
2017
- 2017-12-02 CN CN201721653997.6U patent/CN208506145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082624A (en) * | 2019-05-22 | 2019-08-02 | 广西电友科技发展有限公司 | Instrument and examination delivery method are sent in a kind of examination of intelligent DC |
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