CN103645407A - Direct-current low-voltage tester - Google Patents
Direct-current low-voltage tester Download PDFInfo
- Publication number
- CN103645407A CN103645407A CN201310615628.8A CN201310615628A CN103645407A CN 103645407 A CN103645407 A CN 103645407A CN 201310615628 A CN201310615628 A CN 201310615628A CN 103645407 A CN103645407 A CN 103645407A
- Authority
- CN
- China
- Prior art keywords
- resistance
- button switch
- led
- out terminal
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a direct-current low-voltage tester. The direct-current low-voltage tester includes a power supply circuit, a charging control circuit and an output circuit; the power supply circuit comprises more than two packs of batteries and a sliding resistor R1; positive pole lead-out lines of the more than two packs of batteries are respectively connected with the charging control circuit; one end of the sliding resistor R1 is connected with a positive pole lead-out line of the power supply circuit; and the other end of the sliding resistor R1 is connected with the output circuit. With the direct-current low-voltage tester of the invention adopted, defects in the prior art can be eliminated. The direct-current low-voltage tester can not only used for check and analysis of a secondary loop, and can be also used for cable core line check, CT polarity correction and the like, and is convenient to operate.
Description
Technical field
The present invention relates to field of relay protection in power, be specifically related to a kind of DC low-voltage test instrument.
background technology
Existing secondary circuit inspection adopts multimeter equipment, is the indispensable measurement instrument of field of power electronics, generally take that to measure DC current, DC voltage, alternating current, alternating voltage, resistance and audio-frequency electric equality be fundamental purpose.It is disconnected that multimeter uses easily generation to judge by accident in secondary circuit checks, can not judge intuitively phase sequence and the polarity of circuit.Meanwhile, multimeter, for remote test, needs external cable, and complicated operation causes personal injury thereby easily touch false touch by mistake, and multimeter the work such as is checked and had dead band solving fast and effectively CT polarity and cable core.
DC experiment instrument is mainly applicable to the Motivation of enterprises departments such as power department, industrial and mineral, metallurgy, iron and steel the electrical equipments such as Zinc-Oxide Arrester, power cable, transformer, generator is carried out to DC voltage withstand test.Wherein, majority is DC high potential test instrument, adopt intermediate frequency voltage-multiplying circuit, application PWM pulse modulation technology and high-power IGBT device, theoretical according to Electro Magnetic Compatibility, adopt the measures such as special shielding, isolation and ground connection, make DC high potential test realize high-quality, portable and can bear rated voltage and discharge and do not damage.But for DC high potential test instrument field, especially electric system new construction, improvement project and secondary circuit place lack in work, exist control circuit complicated, high to component pressure requirement, so the application of DC high potential test instrument is subject to certain restrictions.
Summary of the invention
The object of the present invention is to provide a kind of DC low-voltage test instrument, overcome the deficiencies in the prior art, it can, for the inspection analysis of secondary circuit, can carry out the work such as cable core is checked, CT polarity correction again.
The present invention is by the following technical solutions:
A DC low-voltage test instrument, wherein, comprises power circuit, charging control circuit and output circuit; Described power circuit comprises battery more than two and swept resistance R1, and the positive outside wire of described battery more than two is connected with charging control circuit respectively, and described swept resistance R1 one end connects the positive outside wire of power circuit, and the other end connects output circuit.
As preferably, described charging control circuit comprises USB interface, button switch K 4-K7, resistance R 6-R9, diode L1-L3 and LED 4-LED7, two terminals of described USB interface connect respectively button switch K 4-K7, and button switch K 4, resistance R 6 and LED 4 are connected successively; Button switch K 5 contact resistance R7, in parallel with diode L1 after resistance R 7 and LED 5 series connection; Button switch K 6 contact resistance R8, in parallel with diode L2 after resistance R 8 and LED 6 series connection; Button switch K 7 contact resistance R9, in parallel with diode L3 after resistance R 9 and LED 7 series connection.
As preferably, described output circuit comprises voltage stabilizing diode D1, resistance R 2, the first negative pole leading-out terminal V0, the first anodal leading-out terminal V1, the second anodal leading-out terminal V2, the 3rd anodal leading-out terminal V3, the 4th anodal leading-out terminal V4, button switch K 1, K2, K3, resistance R 3, R4, R5, LED 1, LED2, LED3, loudspeaker SP1, SP2, SP3; The output terminal of described voltage stabilizing diode D1 connects respectively power circuit, the first positive outside wire V1, button switch K 1, K2, K3, input end contact resistance R2, and described resistance R 2 is connected with power circuit with the first negative pole leading-out terminal V0, charging control circuit respectively; Described button switch K 1, resistance R 3, LED 1 are connected the second anodal leading-out terminal V2 after connecting successively with loudspeaker SP1, described button switch K 2, resistance R 4, LED 2 are connected the 3rd anodal leading-out terminal V3 after connecting successively with loudspeaker SP2, described button switch K 3, resistance R 5, LED 3 are connected the 4th anodal leading-out terminal V4 after connecting successively with loudspeaker SP3.
As preferably, the battery of described power circuit is three groups.
As preferably, the first Battery pack of described power circuit is dry cell combination; The second Battery pack adopts disused mobile battery welding manner, and its positive pole connects the negative pole of the first Battery pack; The 3rd Battery pack adopts chargeable battery, and its positive pole connects the negative pole of the second Battery pack.
As preferably, described USB interface is Mini USB interface.
Beneficial effect of the present invention is:
Structure of the present invention, simple to operate, power supply can adopt chargeable battery and disused mobile battery, and environmental protection can be recycled, and cost is low.Charger is the charger for mobile phone of Mini USB interface, plug and pull, and versatility is good.Power circuit adopts first and the connection type of rear string, has improved output voltage and total battery capacity.Meanwhile, output circuit has stable Voltage-output, and with luminous and sound, is convenient to effective observation.The present invention can reduce to a certain extent touch that false touch brings by mistake harm, guaranteed operating personnel's personal safety.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating below, or can be instructed from the practice of the present invention.
Accompanying drawing explanation
Fig. 1 is circuit theory schematic diagram of the present invention;
Fig. 2 is charging control circuit principle schematic of the present invention.
Embodiment
With embodiment, the present invention is described in further detail by reference to the accompanying drawings below:
As shown in Figure 1 and Figure 2, the present invention includes power circuit, charging control circuit and output circuit.Power circuit comprises three Battery packs and swept resistance R1, and the first Battery pack of power circuit is dry cell combination; The second Battery pack adopts disused mobile battery welding manner, and its positive pole connects the negative pole of the first Battery pack; The 3rd Battery pack adopts chargeable battery, and its positive pole connects the negative pole of the second Battery pack, and Capacitance parallel connection is at two utmost points of total electric battery.The positive outside wire of the first Battery pack U1 is connected with swept resistance R1 with charging control circuit P1 end, and its negative outside wire connects respectively the positive pole of charging control circuit P2 end and the second electric battery U2.The negative outside wire of the second electric battery U2 connects respectively the positive pole of charging control circuit P3 end and the 3rd electric battery U3.The negative outside wire of the 3rd electric battery U3 is connected with resistance R 2 with the first negative pole leading-out terminal V0 of output circuit with the P0 end of charging control circuit respectively.
Charging control circuit comprises Mini USB interface, button switch K 4-K7, resistance R 6-R9, diode L1-L3 and LED 4-LED7.Two terminals 1 of Mini USB interface are connected respectively button switch K 4-K7 with 5, and button switch K 4, resistance R 6 and LED 4 are connected successively, and the output terminal of LED 4 is P1.Button switch K 5 contact resistance R7, in parallel with diode L1 after resistance R 7 and LED 5 series connection, the output terminal of LED 5 is P2.Button switch K 6 contact resistance R8, in parallel with diode L2 after resistance R 8 and LED 6 series connection, the output terminal of LED 6 is P3.Button switch K 7 contact resistance R9, in parallel with diode L3 after resistance R 9 and LED 7 series connection, the output terminal of LED 7 is P0.
Output circuit comprises voltage stabilizing diode D1, resistance R 2, the first negative pole leading-out terminal V0, the first anodal leading-out terminal V1, the second anodal leading-out terminal V2, the 3rd anodal leading-out terminal V3, the 4th anodal leading-out terminal V4, button switch K 1, K2, K3, resistance R 3, R4, R5, LED 1, LED2, LED3, loudspeaker SP1, SP2, SP3.The output terminal of voltage stabilizing diode D1 connects respectively resistance R 1, the first positive outside wire V1, button switch K 1, K2, the K3 of power circuit, input end contact resistance R2, and resistance R 2 is connected with the first negative pole leading-out terminal V0, charging control circuit P0 end respectively.Button switch K 1, resistance R 3, LED 1 are connected the second anodal leading-out terminal V2 after connecting successively with loudspeaker SP1.Button switch K 2, resistance R 4, LED 2 are connected the 3rd anodal leading-out terminal V3 after connecting successively with loudspeaker SP2.Button switch K 3, resistance R 5, LED 3 are connected the 4th anodal leading-out terminal V4 after connecting successively with loudspeaker SP3.
The course of work of the present invention is as follows:
One, initialization; Before use, must carry out corresponding initialization, assurance instrument is normally worked, so that reliable test figure to be provided.
As shown in Figure 1, respectively V2, V3, V4 port in figure are connected to V0 with connecting line, press respectively K1, K2, K3 button, carry out initialization, if the LED lamp in the corresponding loop of switch is luminous, and SP loudspeaker sounding, show that instrument test loop is normal, can come into operation.
Charging initialization:
1. check K1, K2, K3 button position, guarantee that it is at open position; 2. in Fig. 1, R1 slides to maximum resistance position; 3. as shown in Figure 2, K4 is beaten to K41, and K5 beats to K52 Mini USB interface access charging inlet; 4. as luminous in LED4 lamp, show charge circuit P1P2 conducting, can come into operation; 5. according to aforesaid way, respectively to P2P3, the initialization of P3P0 charge circuit.
Two, secondary circuit on off test
1. as shown in Figure 1,, by V0 ground connection in figure, V2, V3, V4 connect respectively core corresponding to loop to be checked side; 2. the other end of V2, V3, core that V4 tests is distinguished ground connection; 3. R1 is slided to appropriate location, and press K1, K2, K3 button, test; If 4. a certain loop conducting, corresponding LED lantern festival is luminous, the loudspeaker prompting of also can sounding.As loop disconnects, loop is obstructed, does not also have luminous and auditory tone cues.
Three, charging
1. as shown in Figure 2, K4 is beaten to K41, and K5 beats to K52, Mini USB accesses charging inlet, by P1P2, U1 the first Battery pack is charged; 2. press successively K5, K6, K7 switch, by P2P3, P3P0 loop respectively to U2, U3 batteries charging; 3. after charging finishes, disconnect USB charging inlet, and definite K4, K5, K6, K7 are in open position.
For the cable of different length, material, can LED and SP loudspeaker normally be worked by regulating the resistance of R1, carry out initialization and experimental test.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. a DC low-voltage test instrument, is characterized in that: comprise power circuit, charging control circuit and output circuit; Described power circuit comprises battery more than two and swept resistance R1, and the positive outside wire of described battery more than two is connected with charging control circuit respectively, and described swept resistance R1 one end connects the positive outside wire of power circuit, and the other end connects output circuit.
2. a kind of DC low-voltage test instrument according to claim 1, it is characterized in that: described charging control circuit comprises USB interface, button switch K 4-K7, resistance R 6-R9, diode L1-L3 and LED 4-LED7, two terminals of described USB interface connect respectively button switch K 4-K7, and button switch K 4, resistance R 6 and LED 4 are connected successively; Button switch K 5 contact resistance R7, in parallel with diode L1 after resistance R 7 and LED 5 series connection; Button switch K 6 contact resistance R8, in parallel with diode L2 after resistance R 8 and LED 6 series connection; Button switch K 7 contact resistance R9, in parallel with diode L3 after resistance R 9 and LED 7 series connection.
3. a kind of DC low-voltage test instrument according to claim 1 and 2, it is characterized in that: described output circuit comprises voltage stabilizing diode D1 resistance R 2, the first negative pole leading-out terminal V0, the first anodal leading-out terminal V1, the second anodal leading-out terminal V2, the 3rd anodal leading-out terminal V3, the 4th anodal leading-out terminal V4, button switch K 1, K2, K3, resistance R 3, R4, R5, LED 1, LED2, LED3, loudspeaker SP1, SP2, SP3; The output terminal of described voltage stabilizing diode D1 connects respectively power circuit, the first positive outside wire V1, button switch K 1, K2, K3, input end contact resistance R2, and described resistance R 2 is connected with power circuit with the first negative pole leading-out terminal V0, charging control circuit respectively; Described button switch K 1, resistance R 3, LED 1 are connected the second anodal leading-out terminal V2 after connecting successively with loudspeaker SP1, described button switch K 2, resistance R 4, LED 2 are connected the 3rd anodal leading-out terminal V3 after connecting successively with loudspeaker SP2, described button switch K 3, resistance R 5, LED 3 are connected the 4th anodal leading-out terminal V4 after connecting successively with loudspeaker SP3.
4. a kind of DC low-voltage test instrument according to claim 3, is characterized in that: the battery of described power circuit is three groups.
5. a kind of DC low-voltage test instrument according to claim 4, is characterized in that: the first Battery pack of described power circuit is dry cell combination; The second Battery pack adopts disused mobile battery welding manner, and its positive pole connects the negative pole of the first Battery pack; The 3rd Battery pack adopts chargeable battery, and its positive pole connects the negative pole of the second Battery pack.
6. a kind of DC low-voltage test instrument according to claim 5, is characterized in that: described USB interface is Mini USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615628.8A CN103645407B (en) | 2013-11-28 | 2013-11-28 | A kind of direct-current low-voltage tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615628.8A CN103645407B (en) | 2013-11-28 | 2013-11-28 | A kind of direct-current low-voltage tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103645407A true CN103645407A (en) | 2014-03-19 |
| CN103645407B CN103645407B (en) | 2016-08-31 |
Family
ID=50250657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310615628.8A Active CN103645407B (en) | 2013-11-28 | 2013-11-28 | A kind of direct-current low-voltage tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103645407B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237733A (en) * | 2014-10-15 | 2014-12-24 | 国网河南省电力公司鹤壁供电公司 | CT polarity tester |
| CN105486965A (en) * | 2014-09-18 | 2016-04-13 | 国家电网公司 | Cable detector |
| CN111025196A (en) * | 2019-12-03 | 2020-04-17 | 国网河南省电力公司鹤壁供电公司 | Solar infrared remote control CT polarity detection device |
| CN114089137A (en) * | 2021-11-30 | 2022-02-25 | 广东电网有限责任公司 | Cable core alignment and pressure resistance test auxiliary device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2043800U (en) * | 1988-05-28 | 1989-08-30 | 国营涪江有线电厂 | Full-automatic d.c.power supply without person on duty |
| JP2000194315A (en) * | 1998-12-25 | 2000-07-14 | Casio Comput Co Ltd | Device and method to inspect circuit |
| CN1949618A (en) * | 2005-10-11 | 2007-04-18 | 精模电子科技（深圳）有限公司 | Battery pack system capable of providing ac voltage |
| CN101257273A (en) * | 2008-03-07 | 2008-09-03 | 张志贤 | DC electric machine drive apparatus with power supply by second lithium batteries |
| CN203849351U (en) * | 2013-11-28 | 2014-09-24 | 国网河南省电力公司鹤壁供电公司 | Direct current low_voltage tester |
-
2013
- 2013-11-28 CN CN201310615628.8A patent/CN103645407B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2043800U (en) * | 1988-05-28 | 1989-08-30 | 国营涪江有线电厂 | Full-automatic d.c.power supply without person on duty |
| JP2000194315A (en) * | 1998-12-25 | 2000-07-14 | Casio Comput Co Ltd | Device and method to inspect circuit |
| CN1949618A (en) * | 2005-10-11 | 2007-04-18 | 精模电子科技（深圳）有限公司 | Battery pack system capable of providing ac voltage |
| CN101257273A (en) * | 2008-03-07 | 2008-09-03 | 张志贤 | DC electric machine drive apparatus with power supply by second lithium batteries |
| CN203849351U (en) * | 2013-11-28 | 2014-09-24 | 国网河南省电力公司鹤壁供电公司 | Direct current low_voltage tester |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486965A (en) * | 2014-09-18 | 2016-04-13 | 国家电网公司 | Cable detector |
| CN104237733A (en) * | 2014-10-15 | 2014-12-24 | 国网河南省电力公司鹤壁供电公司 | CT polarity tester |
| CN104237733B (en) * | 2014-10-15 | 2017-11-17 | 国网河南省电力公司鹤壁供电公司 | CT polarity testers |
| CN111025196A (en) * | 2019-12-03 | 2020-04-17 | 国网河南省电力公司鹤壁供电公司 | Solar infrared remote control CT polarity detection device |
| CN114089137A (en) * | 2021-11-30 | 2022-02-25 | 广东电网有限责任公司 | Cable core alignment and pressure resistance test auxiliary device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103645407B (en) | 2016-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203553520U (en) | Data line with detection function | |
| CN103606717B (en) | The detection adapter of protection against electric shock charging method and band suspended voltage measuring ability | |
| CN103645407A (en) | Direct-current low-voltage tester | |
| CN103336168A (en) | Full-loop alternating-current self-test high-voltage electroscope | |
| CN203849351U (en) | Direct current low_voltage tester | |
| CN203825099U (en) | Universal phase verification device | |
| CN103926478A (en) | Universal phase checking device and phase checking method | |
| CN204012788U (en) | Portable integrated portable power source | |
| CN104426139A (en) | Anti-reverse battery charging protecting circuit | |
| CN204376515U (en) | Outdoor high-voltage switch operating power self-energizing system | |
| CN204696683U (en) | Direct-current traction power supply contact line residual voltage restraining device | |
| CN205120814U (en) | Rechargeable high -voltage electroscope | |
| CN204228882U (en) | A kind of winding polarity test checking apparatus of electric power mutual-inductor | |
| CN103499734B (en) | Lead-acid battery charger rapid and handy formula tester | |
| CN203596395U (en) | Detection adaptor with suspension voltage detection function | |
| CN104967170A (en) | Power bank | |
| CN204271697U (en) | A kind of portable voltage stabilizing portable power source device | |
| CN103997088A (en) | Power transmission line electronic equipment power system | |
| CN212486382U (en) | Portable relay protection test power supply | |
| CN203911519U (en) | Dual-cell protector | |
| CN203883517U (en) | A power transmission line electronic equipment power supply system | |
| CN202798097U (en) | Multifunctional mobile charger | |
| CN203838197U (en) | Electric energy meter indicated number reading device | |
| CN203553985U (en) | Wireless charging device | |
| CN104505878A (en) | Portable voltage-stabilizing mobile power supply device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Aiguo Inventor after: Fu Wenzhu Inventor after: Li Xinlu Inventor after: Hao Xuemin Inventor after: Fan Li Inventor after: Li Zhenji Inventor after: Hao Jiangang Inventor after: Liu Yang Inventor after: Liu Qi Inventor after: Liu Siqing Inventor after: Zhang Chenming Inventor after: Tong Jianwei Inventor after: Ma Dongfang Inventor before: Li Zhenji Inventor before: Hao Jiangang Inventor before: Liu Yang Inventor before: Liu Qi Inventor before: Xu Yanqiang Inventor before: Zhang Chenming Inventor before: Tong Jianwei Inventor before: Ma Dongfang |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |