CN202362387U - Lightning-proof anti-interference grounding resistance measuring system - Google Patents
Lightning-proof anti-interference grounding resistance measuring system Download PDFInfo
- Publication number
- CN202362387U CN202362387U CN2011204803167U CN201120480316U CN202362387U CN 202362387 U CN202362387 U CN 202362387U CN 2011204803167 U CN2011204803167 U CN 2011204803167U CN 201120480316 U CN201120480316 U CN 201120480316U CN 202362387 U CN202362387 U CN 202362387U
- Authority
- CN
- China
- Prior art keywords
- voltage
- power supply
- measuring system
- grounding body
- resistance measuring
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a lightning-proof anti-interference grounding resistance measuring system, which comprises an ampere meter, a voltage meter, a power supply and a measured grounding body, wherein the measured grounding body is connected with a voltage electrode through the voltage meter; the measured grounding body is connected with a current electrode through the ampere meter and the power supply; an isolation transformer is arranged between the ampere meter and the power supply; the distance between the voltage electrode and the measured grounding body is 20m and the distance between the current electrode and the measured grounding body is 40m; and the voltage electrode and the current electrode are probes, the voltage meter is a voltage meter with small internal resistance and fine voltage scales, and the power supply is an alternating-current power supply. Since the alternating-current power supply passes through the isolation transformer, the neutral point can be grounded. The structure is simple, the measuring accuracy is higher, the anti-interference capability is stronger and the application scope is wider.
Description
One, technical field:
The utility model relates to the anti-interference grounding resistance measuring system of a kind of lightning protection, belongs to electrician's regular job field.
Two, background technology:
Lightning protection is as an important safety precautions, and state indicates strict regulation, and the stake resistance of grounding body must be less than 4 ohm generally speaking.The factor that influences stake resistance is a lot: the size of earthing pole (length, thickness), shape, quantity, the depth of burying, geographical environment, soil moisture quality or the like on every side; In order to guarantee the good earth of equipment, measurement is absolutely necessary to the grounding body stake resistance to utilize instrument.
Three, utility model content:
The utility model technical matters to be solved is: provide a kind of lightning protection anti-interference grounding resistance measuring system, satisfy the needs in the real work.
The utility model is that the technical scheme that the technical solution problem is taked is:
The anti-interference grounding resistance measuring system of a kind of lightning protection comprises reometer, voltage table, power supply and tested grounding body, and said tested grounding body links to each other with voltage pole through voltage table; Said tested grounding body extremely links to each other with electric current through reometer, power supply; Be provided with isolating transformer between said reometer and the power supply.
The interval is 20 meters between said voltage pole and the tested grounding body.
The interval is 40 meters between the said electric current utmost point and the tested grounding body.
The said voltage pole and the electric current utmost point are probe.
Said voltage table is the voltage table that internal resistance is less, the magnitude of voltage scale is thinner.
Said power supply is an AC power.
The anti-interference grounding resistance measuring system of the lightning protection of the utility model, because AC power is through there being isolating transformer, its neutral point can ground connection.It is simple in structure, and measuring accuracy is than higher, and antijamming capability is more intense, and accommodation is wider.
Four, description of drawings:
Fig. 1 is that the structure of the utility model connects synoptic diagram.
Five, embodiment:
Below in conjunction with accompanying drawing the utility model is further described:
Referring to Fig. 1, the anti-interference grounding resistance measuring system of a kind of lightning protection comprises reometer 5, voltage table 2, power supply 7 and tested grounding body 1, and said tested grounding body 1 links to each other with voltage pole 3 through voltage table 2; Said tested grounding body 1 links to each other with the electric current utmost point 4 through reometer 5, power supply 7; Be provided with isolating transformer 6 between said reometer 5 and the power supply 7; Between said voltage pole 3 and the tested grounding body 1 20 meters at interval, between the said electric current utmost point 4 and the tested grounding body 1 40 meters at interval, said voltage pole, 3 and the electric current utmost point 4 be probe; Said voltage table 2 is the voltage table that internal resistance is less, the magnitude of voltage scale is thinner; Said power supply 7 is an AC power.
The anti-interference grounding resistance measuring system of the lightning protection of this utility model, because AC power is through there being isolating transformer 6, its neutral point can ground connection.Simple in structure, measuring accuracy is than higher, and antijamming capability is more intense, and accommodation is wider.
Claims (6)
1. the anti-interference grounding resistance measuring system of lightning protection comprises reometer (5), voltage table (2), power supply (7) and tested grounding body (1), it is characterized in that: said tested grounding body (1) links to each other with voltage pole (3) through voltage table (2); Said tested grounding body (1) links to each other with the electric current utmost point (4) through reometer (5), power supply (7); Be provided with isolating transformer (6) between said reometer (5) and the power supply (7).
2. the anti-interference grounding resistance measuring system of lightning protection according to claim 1 is characterized in that: the interval is 20 meters between said voltage pole (3) and the tested grounding body (1).
3. the anti-interference grounding resistance measuring system of lightning protection according to claim 1 is characterized in that: the interval is 40 meters between the said electric current utmost point (4) and the tested grounding body (1).
4. according to the anti-interference grounding resistance measuring system of each described lightning protection of claim 1～3, it is characterized in that: the said voltage pole (3) and the electric current utmost point (4) are probe.
5. the anti-interference grounding resistance measuring system of lightning protection according to claim 1 is characterized in that: said voltage table (2) is the voltage table that internal resistance is less, the magnitude of voltage scale is thinner.
6. the anti-interference grounding resistance measuring system of lightning protection according to claim 1 is characterized in that: said power supply (7) is an AC power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204803167U CN202362387U (en) | 2011-11-28 | 2011-11-28 | Lightning-proof anti-interference grounding resistance measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204803167U CN202362387U (en) | 2011-11-28 | 2011-11-28 | Lightning-proof anti-interference grounding resistance measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202362387U true CN202362387U (en) | 2012-08-01 |
Family
ID=46573565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204803167U Expired - Fee Related CN202362387U (en) | 2011-11-28 | 2011-11-28 | Lightning-proof anti-interference grounding resistance measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202362387U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879688A (en) * | 2012-10-12 | 2013-01-16 | 宁波市鄞州供电局 | Test system for grounding grid |
| CN103336177A (en) * | 2013-06-07 | 2013-10-02 | 国家电网公司 | Testing method for ground resistance and ground capacitance of grounding network |
| CN103529305A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Ground resistance test auxiliary system of ground grid of power equipment |
| CN103529304A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Optimization method of on-site ground resistance testing technology of ground grid of electric power equipment |
-
2011
- 2011-11-28 CN CN2011204803167U patent/CN202362387U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879688A (en) * | 2012-10-12 | 2013-01-16 | 宁波市鄞州供电局 | Test system for grounding grid |
| CN103336177A (en) * | 2013-06-07 | 2013-10-02 | 国家电网公司 | Testing method for ground resistance and ground capacitance of grounding network |
| CN103529305A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Ground resistance test auxiliary system of ground grid of power equipment |
| CN103529304A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Optimization method of on-site ground resistance testing technology of ground grid of electric power equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20150362536A1 (en) | High-voltage direct current broad frequency-domain corona current measurement system | |
| CN201780335U (en) | Ground resistance detecting device of overhead transmission line pole tower | |
| CN102928673B (en) | Method for acquiring impulse grounding resistance | |
| CN202362387U (en) | Lightning-proof anti-interference grounding resistance measuring system | |
| CN101738552A (en) | High-elevation correction method for lead critical coronal voltage of 750kV transmission line | |
| CN102998603A (en) | Device and method for measuring impact current divergence characteristics of earth electrode | |
| CN104535844A (en) | Method for testing grounding resistance of tower by using disassembly-free down conductor | |
| CN102981058B (en) | Anti-interference direct current resistance testing device | |
| CN202676807U (en) | A ground resistance measuring device | |
| CN109884400A (en) | Transmission tower ground resistance on-Line Monitor Device based on double measurement patterns | |
| CN205656242U (en) | Tower impulse grounding resistance measuring instrument with spark effect correction function | |
| CN102169754B (en) | Current and voltage transformer | |
| CN201886067U (en) | Online voltage harmonic monitoring system for wind farms | |
| RU152421U1 (en) | DEVICE FOR MEASURING RESISTANCE OF EARTH GROUNDERS OF U-SHAPED SUPPORTS OF ELECTRIC TRANSMISSION AIR LINES WITHOUT DISCONNECTING THE GROUND PROTECTION ROPE | |
| CN204789763U (en) | Circuit iron tower ground net impulse grounding impedance measuring apparatu | |
| CN205958651U (en) | Multiple spot oil field ground resistance measurement device | |
| CN203224571U (en) | A flexible grounding resistance tester | |
| CN202939224U (en) | Anti-interference direct-current resistance testing device | |
| CN201837694U (en) | Wiring tester for electric energy metering device | |
| CN204154818U (en) | The multiplex grounding resistance measurement equipment of a kind of new mobile type | |
| CN104833883B (en) | A kind of earth mat method of testing based on 10 35kV short circuit groundings | |
| CN104655940A (en) | 500kV transformer substation power frequency electric field and magnetic field calculation method | |
| CN204044249U (en) | A kind of proving installation of stake resistance | |
| CN203929896U (en) | Anti-explosion digital earth resistance tester | |
| Nassereddine et al. | Designing a lightning protection system using the rolling sphere method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20121128 |