CN203839787U - Ground wire with electricity detecting function - Google Patents
Ground wire with electricity detecting function Download PDFInfo
- Publication number
- CN203839787U CN203839787U CN201420280136.8U CN201420280136U CN203839787U CN 203839787 U CN203839787 U CN 203839787U CN 201420280136 U CN201420280136 U CN 201420280136U CN 203839787 U CN203839787 U CN 203839787U
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- CN
- China
- Prior art keywords
- circuit
- ground
- electricity detecting
- electrical verification
- insulating bar
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a maloperation prevention apparatus for switching operation during running of a transformer substation and more specifically relates to a ground wire with an electricity detecting function. The ground wire comprises an insulation rod. A ground port is arranged on the top of the insulation rod. The ground wire also comprises an electricity detecting device and a lockup circuit. The electricity detecting device includes an electricity detecting circuit and an alarming circuit. The electricity detecting circuit is equipped with a sampling resistor and an amplification circuit. An electricity detecting probe is connected with the sampling resistor via an electricity detecting switch. The sampling resistor is connected with the amplification circuit. The amplification circuit is connected with the alarming circuit. A ground lead wire is connected with the electricity detecting probe through the lockup circuit. The electricity detecting probe is disposed at the ground port. The electricity detecting switch is disposed on the insulation rod. The sampling resistor, the amplification circuit and the alarming circuit are disposed inside the insulation rod. The electricity detecting device is adopted to detect whether a line or equipment is electrified. If the line or equipment is detected to be electrified, the ground lead wire is cut off automatically via the lockup circuit, thereby ensuring safe operation and effectively preventing electric shock accidents.
Description
Technical field
The utility model relates to a kind of switching operation of power transformation anti-misoperation apparatus, is specifically related to a kind of earth connection with electroscope function.
Background technology
Earth connection is the lifeline that ensures staff's personal safety, and the operation of mounting or dismounting earth connection is dangerous larger operation in electric operation, and in electric power system, the accident of live connection of ground wire is not rarely seen.In " electric power safety working regulation ", clearly need that equipment is carried out to electrical verification before regulation installing earth connection and determine the true no-voltage of equipment, in the time of direct electrical verification, must adopt the mode of indirect method of checking electricity to determine the true no-voltage of equipment, once have an accident, impact is large, consequence is serious, will be listed in one of pernicious misoperation fault.Therefore the correctness of, guaranteeing to install and remove earth connection is an important process of electric substation's safe and reliable operation.
Utility model content
For the deficiency in solving the problems of the technologies described above, the purpose of this utility model is: a kind of earth connection with electroscope function is provided, directly by electroscopic device check circuit or equipment whether charged, when circuit or equipment live detected, automatically cut off ground lead by exclusive circuit, ensure safety operation, effectively avoid electric shock accidents.
The utility model for the technical scheme that its technical problem of solution adopts is:
The described earth connection with electroscope function, comprise insulating bar, ground connection mouth and ground lead, ground connection mouth is arranged on insulating bar top, also comprise electroscopic device and exclusive circuit, electroscopic device comprises electrical circuit inspection and warning circuit, electrical circuit inspection is provided with sample resistance and amplifying circuit, electrical verification probe connects sample resistance by electrical verification switch, sample resistance connects amplifying circuit, amplifying circuit connects warning circuit, ground lead is connected with electrical verification probe by exclusive circuit, electrical verification probe is located on ground connection mouth, electrical verification switch is located on insulating bar, sample resistance, amplifying circuit and warning circuit are located at insulating bar inside.
Wherein, preferred version is:
Described warning circuit comprises audible alarm and two branch roads of photoelectric alarm, in the time circuit or equipment live being detected, reports to the police respectively by sound and photoelectricity, plays good early warning effect; Described ground connection mouth is double tongue type ground connection mouth, and double tongue type ground connection mouth is easy to use, applied widely, contact is firm; Described insulating bar is provided with arc-extinguish chamber, and succinct, the slim and graceful convenience of outward appearance, convenient operation, insulation resistance are large; Described exclusive circuit comprises the relay of two series connection, electrical verification probe, electrical verification switch, relay I, relay II and ground lead are in sequential series, relay II coil is located on ground connection mouth, when circuit to be measured or equipment live, relay II coil is charged, the adhesive of relay II normal opened contact, starts exclusive circuit, cuts off ground lead; Described ground lead adopts the middle short-circuit type earth connection of three-phase, easily fixes, conducts electricity very well; Electroscopic device is also provided with hookup, and hookup is provided with test switch, and test switch is arranged on insulating bar, whether electrical verification is before in order to check warning circuit can normally work, press test switch, closed hookup, then connects warning circuit, if warning circuit is normal, to report to the police, can normally use, undesired, do not report to the police, need maintenance.
When the utility model uses, hand-held insulating bar, ground connection mouth is stuck on circuit to be measured or equipment, open electrical verification switch, if circuit is charged, electrical verification probe, insulating bar and operating personnel form a capacitor loop to the earth, sample resistance two ends produce voltage signal, this voltage signal is sent to amplifying circuit, when this voltage signal reaches predeterminated voltage grade, be generally 10KV or 35KV, warning circuit is reported to the police, meanwhile, test after electrical switch closes, relay I normally closed contact closure, relay II coil powers under the effect of circuit to be measured or equipment, relay II normal opened contact closure, between ground connection mouth and ground lead, cannot form closed-loop path, so as to avoid an accident, if do not have electric current to pass through on circuit to be measured or equipment, relay I, II normally closed contact closure, between ground connection mouth and ground lead, form path, normal operation.
Compared with prior art, the utlity model has following beneficial effect:
The utility model uses simple, coefficient of safety is high, directly by electroscopic device check circuit or equipment whether charged, test after electrical switch closes, if circuit or equipment live detected, relay I normally closed contact closure, relay II coil powers under the effect of circuit to be measured or equipment, relay II normal opened contact closure, between ground connection mouth and ground lead, cannot form closed-loop path, ensure safety operation, effectively avoid electric shock accidents, if do not have electric current to pass through on circuit to be measured or equipment, relay I, II normally closed contact closure, between ground connection mouth and ground lead, form path, in addition, normally work for guaranteeing electroscopic device, hookup detection alarm circuit is set whether normal.
Brief description of the drawings
Fig. 1 the utility model structural representation.
Fig. 2 electroscopic device circuit theory diagrams.
In figure: 1, insulating bar; 2, ground connection mouth; 3, ground lead; S1, test switch; S2, electrical verification switch.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 1-2, earth connection with electroscope function described in the utility model, comprise insulating bar 1, ground connection mouth 2 and ground lead 3, ground connection mouth 2 is arranged on insulating bar 1 top, also comprise electroscopic device and exclusive circuit, electroscopic device comprises electrical circuit inspection and warning circuit, electrical circuit inspection is provided with the sample resistance R2 of series connection, R3 and amplifying circuit, electrical verification probe n connects sample resistance R2 by electrical verification switch S 2, R3, sample resistance R2, R3 connects amplifying circuit, amplifying circuit connects warning circuit, ground lead is connected with electrical verification probe n by exclusive circuit, electrical verification probe n is located on ground connection mouth 2, electrical verification switch S 2 is located on insulating bar 1, sample resistance R2, sample resistance R3, amplifying circuit and warning circuit are located at insulating bar 1 inside.
Wherein, described warning circuit comprises audible alarm and two branch roads of photoelectric alarm, in the time circuit or equipment live being detected, reports to the police respectively by sound and photoelectricity, plays good early warning effect; Described ground connection mouth 2 is double tongue type ground connection mouth, and double tongue type ground connection mouth is easy to use, applied widely, contact is firm; Described insulating bar 1 is provided with arc-extinguish chamber, and succinct, the slim and graceful convenience of outward appearance, convenient operation, insulation resistance are large; Described exclusive circuit comprises the relay of two series connection, electrical verification probe n, electrical verification switch S 2, relay I, relay II and ground lead 3 are in sequential series, relay II coil is located on ground connection mouth, when circuit to be measured or equipment live, relay II coil is charged, the adhesive of relay II normal opened contact, starts exclusive circuit, cuts off ground lead; Described ground lead 3 adopts the middle short-circuit type earth connection of three-phase, easily fixes, conducts electricity very well; Electroscopic device is also provided with hookup, and hookup is provided with test switch S1, and test switch S1 is arranged on insulating bar 1, whether electrical verification is before in order to check warning circuit can normally work, press test switch S1, closed hookup, then connects warning circuit, if warning circuit is normal, to report to the police, can normally use, undesired, do not report to the police, need maintenance.
When the utility model uses, hand-held insulating bar 1, ground connection mouth 2 is stuck on circuit to be measured or equipment, open electrical verification switch S 2, if circuit or equipment live, electrical verification probe n, insulating bar 1 and operating personnel form a capacitor loop to the earth, sample resistance R2, R3 two ends produce voltage signal, this voltage signal is sent to amplifying circuit, when this voltage signal reaches predeterminated voltage grade, be generally 10KV or 35KV, warning circuit is reported to the police, meanwhile, after electrical verification switch S 2 closures, relay I normally closed contact closure, relay II coil powers under the effect of circuit to be measured or equipment, relay II normal opened contact closure, between ground connection mouth 2 and ground lead 3, cannot form closed-loop path, so as to avoid an accident, if do not have electric current to pass through on circuit to be measured or equipment, relay I, II normally closed contact closure, between ground connection mouth 2 and ground lead 3, form path, normal operation.
Claims (7)
1. the earth connection with electroscope function, comprise insulating bar (1), ground connection mouth (2) and ground lead (3), ground connection mouth (2) is arranged on insulating bar top, it is characterized in that, also comprise electroscopic device and exclusive circuit, electroscopic device comprises electrical circuit inspection and warning circuit, electrical circuit inspection is provided with sample resistance and amplifying circuit, electrical verification probe connects sample resistance by electrical verification switch (S2), sample resistance connects amplifying circuit, amplifying circuit connects warning circuit, ground lead (3) is connected with electrical verification probe by exclusive circuit, electrical verification probe is located on ground connection mouth (2), electrical verification switch (S2) is located on insulating bar (1), sample resistance, amplifying circuit and warning circuit are located at insulating bar (1) inside.
2. the earth connection with electroscope function according to claim 1, is characterized in that, described warning circuit comprises audible alarm and two branch roads of photoelectric alarm.
3. the earth connection with electroscope function according to claim 1, is characterized in that, described ground connection mouth (2) is double tongue type ground connection mouth.
4. the earth connection with electroscope function according to claim 1, is characterized in that, described insulating bar (1) is provided with arc-extinguish chamber.
5. according to the earth connection with electroscope function described in claim 1-4 any one, it is characterized in that, described exclusive circuit comprises the relay of two series connection, electrical verification probe, electrical verification switch (S2), relay I, relay II and ground lead (3) are in sequential series, and relay II coil is located on ground connection mouth (2).
6. the earth connection with electroscope function according to claim 1, is characterized in that, described ground lead (3) adopts the middle short-circuit type earth connection of three-phase.
7. the earth connection with electroscope function according to claim 1, it is characterized in that, described electroscopic device is also provided with hookup, and hookup is provided with test switch (S1), and test switch (S1) is arranged on insulating bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280136.8U CN203839787U (en) | 2014-05-28 | 2014-05-28 | Ground wire with electricity detecting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280136.8U CN203839787U (en) | 2014-05-28 | 2014-05-28 | Ground wire with electricity detecting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839787U true CN203839787U (en) | 2014-09-17 |
Family
ID=51517586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420280136.8U Expired - Fee Related CN203839787U (en) | 2014-05-28 | 2014-05-28 | Ground wire with electricity detecting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839787U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459283A (en) * | 2014-12-24 | 2015-03-25 | 国家电网公司 | Electricity-sensing voice prompt high-voltage ground wire device for 10 KV discharging and use method thereof |
| CN108808556A (en) * | 2018-08-09 | 2018-11-13 | 云南电网有限责任公司电力科学研究院 | A kind of electrical verification for power distribution line maintenance is grounded integrated apparatus |
| CN114114073A (en) * | 2021-11-25 | 2022-03-01 | 国网四川省电力公司达州供电公司 | Grounding wire device for power grid maintenance and grounding condition monitoring method thereof |
-
2014
- 2014-05-28 CN CN201420280136.8U patent/CN203839787U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459283A (en) * | 2014-12-24 | 2015-03-25 | 国家电网公司 | Electricity-sensing voice prompt high-voltage ground wire device for 10 KV discharging and use method thereof |
| CN108808556A (en) * | 2018-08-09 | 2018-11-13 | 云南电网有限责任公司电力科学研究院 | A kind of electrical verification for power distribution line maintenance is grounded integrated apparatus |
| CN114114073A (en) * | 2021-11-25 | 2022-03-01 | 国网四川省电力公司达州供电公司 | Grounding wire device for power grid maintenance and grounding condition monitoring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20160528 |