CN104407202A - Induced electrical insulation test rod for civil facility - Google Patents
Induced electrical insulation test rod for civil facility Download PDFInfo
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- CN104407202A CN104407202A CN201410765747.6A CN201410765747A CN104407202A CN 104407202 A CN104407202 A CN 104407202A CN 201410765747 A CN201410765747 A CN 201410765747A CN 104407202 A CN104407202 A CN 104407202A
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- rod
- voltage
- insulation test
- test rod
- gage beam
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Abstract
The invention relates to an induced electrical insulation test rod for a civil facility. The induced electrical insulation test rod comprises a measurement end, a rod body and a metal handle which are connected in sequence from top to bottom, wherein the rod body adopts a hollow structure; a capacitive voltage division loop and a measurement display loop are arranged in the rod body; the capacitive voltage division loop comprises a high-voltage arm and a medium-voltage measurement arm; the measurement display loop is connected to the two ends of the medium-voltage measurement arm in parallel; the measurement end, the high-voltage arm, the medium-voltage measurement arm and the metal handle are connected in series; each of the high-voltage arm and the medium-voltage measurement arm comprises a plurality of tandem capacitors. Compared with the prior art, the induced electrical insulation test rod has the advantages of high measurement precision, simple structure, direct observation, adjustable measurement range and the like.
Description
Technical field
The present invention relates to a kind of induced electricity reference test bar, especially relate to a kind of civilian installation induced electricity insulation test rod.
Background technology
Can produce electric field around high pressure overhead power line, due to capacitively coupled effect, can there is induced voltage because of electric field action in the many civilian installations (as clothes-horse, booth, Domestic distribution circuit etc.) existed around it.
In the prior art, the size detecting this induced voltage has following several method usually: 1, measure with neon bulb electroprobe or digital induction type electroprobe, neon bulb electroprobe cannot intuitively show induced voltage size, numeral induction type test pencil can only fuzzy measurement voltage, accurately can not measure the concrete numerical value of voltage.And be originally exactly incorrect with electroprobe measurement induced electricity.2, measure with electrostatic voltmeter, the method measurement result is comparatively accurate, but equipment itself is very heavy and need AC power, is not suitable for the remote districts such as farmland, has certain limitation.3, use multimeter to measure, it is relevant with the range of multimeter that the method measures faradic size, and accuracy of measurement depends on the internal resistance of multimeter, will select the multimeter that internal resistance is larger during measurement.4, adopt special induced voltage tester (voltage divider) to measure, this measuring method needs to connect p-wire on product to be tested, and p-wire length has considerable influence to measurement result.
To sum up, the measuring method environment for use that existing methodical shortcoming is embodied in accuracy of measurement high has certain limitation, and the measuring accuracy measuring conveniently measuring method is poor, therefore need to propose a kind of precision higher, measure convenient, environment for use civilian installation induced electricity measuring method comparatively widely.
Summary of the invention
Object of the present invention be exactly provide that a kind of measuring accuracy is high to overcome defect that above-mentioned prior art exists, structure is simple, directly observation, civilian installation induced electricity insulation test rod that range is adjustable.
Object of the present invention can be achieved through the following technical solutions:
A kind of civilian installation induced electricity insulation test rod, comprise the measuring junction, the body of rod and the metal handle that connect successively from top to bottom, the described body of rod is hollow structure, inside is provided with capacitance partial pressure loop and measures show circuit, described capacitance partial pressure loop comprises high-voltage arm and middle pressure gage beam, described measurement show circuit is connected in parallel on middle pressure gage beam two ends, described measuring junction, high-voltage arm, middle pressure gage beam and metal handle series connection, described high-voltage arm and middle pressure gage beam form by the electric capacity of multiple series connection.
Described measuring junction is hook formation or clip-like structure.
The described body of rod comprises the body of rod and the lower body of rod, and the described upper body of rod is socketed on the lower body of rod, in order to regulate the length of the body of rod.
Described measurement show circuit comprises power supply and voltage table, and described voltage table is connected in parallel on the two ends of middle pressure gage beam, and described power supply is connected with voltage table.
The range gear of described insulation test rod is 5000V, 10000V and 15000V.
The described middle capacitance of pressure gage beam is 500 ~ 4000: 1 with the ratio of the capacitance of high-voltage arm.
Described rod body material is insulating material.
Compared with prior art, the present invention has the following advantages:
One, measuring accuracy is high, the present invention is based on capacitive divider principle, and measuring accuracy is higher than general surveying instrument, and be provided with measuring junction at the top of the body of rod, make the direct contact measured article of high-voltage arm, avoid using lead-in wire, reducing measurement lead capacitance affects measurement result.
Two, structure is simple, body of rod hollow of the present invention, lightweight, volume is little and it is self-powered to measure show circuit, and use occasion is more
Three, directly observe, the built-in measurement show circuit of the body of rod of the present invention, is provided with voltage table, can display measurement result directly perceived.
Four, range is adjustable, and the present invention is by adjustment high-voltage arm and the capacitance size of middle pressure gage beam and the gear of adjusting range.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, 1, measuring junction, 2, the body of rod, 3, metal handle, 21, capacitance partial pressure loop, 22, measure show circuit, 211, high-voltage arm, 212, middle pressure gage beam, 221, power supply, 222, voltage table.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment:
As shown in Figure 1, a kind of civilian installation induced electricity insulation test rod, comprise the measuring junction 1, the body of rod 2 and the metal handle 3 that connect successively from top to bottom, the body of rod 2 is hollow structure, inside is provided with capacitance partial pressure loop 21 and measures show circuit 22, capacitance partial pressure loop 21 comprises high-voltage arm 211 and middle pressure gage beam 212, measure show circuit 22 and be connected in parallel on middle pressure gage beam 212 two ends, measuring junction 1, high-voltage arm 211, middle pressure gage beam 212 and metal handle 3 are connected, and high-voltage arm 211 and middle pressure gage beam 212 form by the electric capacity of multiple series connection.
Measuring junction 1 is hook formation or clip-like structure.
The body of rod 2 comprises the body of rod and the lower body of rod, and the upper body of rod is socketed on the lower body of rod, in order to regulate the length of the body of rod.
Measure show circuit 22 and comprise power supply 221 and voltage table 222, voltage table 222 is connected in parallel on the two ends of middle pressure gage beam 212, and power supply 221 is connected with voltage table 222.
The range gear of insulation test rod is 5000V, 10000V and 15000V.
The capacitance of middle pressure gage beam 212 is 500 ~ 4000: 1 with the ratio of the capacitance of high-voltage arm 211.
The body of rod 2 material is insulating material.
The measuring method of this sounding rod is:
This method, based on the principle of capacitance partial pressure, utilizes the average ground capacitance of human body for 100pF is as a part for capacitive divider low-pressure side, adopts direct contact type to measure, directly reads the induced electricity size of tested civilian installation.
During measurement, surveyor station is free-hand on the ground catches metal handle 3, sounding rod is lifted, measuring junction 1 is directly contacted with testee, open voltage table subsequently, after being read by the magnitude of voltage of middle pressure gage beam 212, by the capacitance ratio of known high-voltage arm 211, middle pressure gage beam 212 and human body, calculate the actual voltage value that overall magnitude of voltage is object under test.
Measuring method is based on capacitive divider principle, when faradic power is less, high-voltage arm adopts the electric capacity of 200nF, middle pressure gage beam adopts 100pF electric capacity, low-voltage arm is human body ground capacitance 100pF, the middle capacitance of pressure gage beam is 500: 1 with the ratio of the capacitance of high-voltage arm, and the range gear of reference test bar is adjusted to 5000V shelves, measures.
When faradic power is larger, high-voltage arm adopts the electric capacity of 100nF, middle pressure gage beam adopts 200pF electric capacity, low-voltage arm is human body ground capacitance 100pF, the middle capacitance of pressure gage beam is 2000: 1 with the ratio of the capacitance of high-voltage arm, and the range gear of reference test bar is adjusted to 10000V shelves, measure.
When faradic power is very large, high-voltage arm adopts the electric capacity of 50nF, middle pressure gage beam adopts 200pF electric capacity, low-voltage arm is human body ground capacitance 100pF, the middle capacitance of pressure gage beam is 4000: 1 with the ratio of the capacitance of high-voltage arm, and the range gear of reference test bar is adjusted to 15000V shelves, measure.
High-voltage arm and middle pressure gage beam are placed in insulation test rod, and reference test bar built-in lithium battery is powered for measuring show circuit simultaneously.
Certain is parallel to the unearthed booth metal support of high-tension line with induced voltage, is measured as 110 ~ 220V with induction type electroprobe, and because condition restriction cannot be measured with electrostatic voltmeter, measure by method mentioned above, recording induced voltage is 123V.
Claims (7)
1. a civilian installation induced electricity insulation test rod, it is characterized in that, comprise the measuring junction (1) connected successively from top to bottom, the body of rod (2) and metal handle (3), the described body of rod (2) is hollow structure, inside is provided with capacitance partial pressure loop (21) and measures show circuit (22), described capacitance partial pressure loop (21) comprises high-voltage arm (211) and middle pressure gage beam (212), described measurement show circuit (22) is connected in parallel on middle pressure gage beam (212) two ends, described measuring junction (1), high-voltage arm (211), middle pressure gage beam (212) and metal handle (3) series connection, described high-voltage arm (211) and middle pressure gage beam (212) form by the electric capacity of multiple series connection.
2. a kind of civilian installation induced electricity insulation test rod according to claim 1, is characterized in that, described measuring junction (1) is hook formation or clip-like structure.
3. a kind of civilian installation induced electricity insulation test rod according to claim 1, is characterized in that, the described body of rod (2) comprises the body of rod and the lower body of rod, and the described upper body of rod is socketed on the lower body of rod, in order to regulate the length of the body of rod.
4. a kind of civilian installation induced electricity insulation test rod according to claim 1, it is characterized in that, described measurement show circuit (22) comprises power supply (221) and voltage table (222), described voltage table (222) is connected in parallel on the two ends of middle pressure gage beam (212), and described power supply (221) is connected with voltage table (222).
5. a kind of civilian installation induced electricity insulation test rod according to claim 1, is characterized in that, the range gear of described insulation test rod is 5000V, 10000V and 15000V.
6. a kind of civilian installation induced electricity insulation test rod according to claim 1, is characterized in that, the described capacitance of middle pressure gage beam (212) and the ratio of the capacitance of high-voltage arm (211) are 500 ~ 4000: 1.
7. a kind of civilian installation induced electricity insulation test rod according to claim 1, is characterized in that, the described body of rod (2) material is insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410765747.6A CN104407202A (en) | 2014-12-11 | 2014-12-11 | Induced electrical insulation test rod for civil facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410765747.6A CN104407202A (en) | 2014-12-11 | 2014-12-11 | Induced electrical insulation test rod for civil facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104407202A true CN104407202A (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410765747.6A Pending CN104407202A (en) | 2014-12-11 | 2014-12-11 | Induced electrical insulation test rod for civil facility |
Country Status (1)
| Country | Link |
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| CN (1) | CN104407202A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2582405A1 (en) * | 1985-05-21 | 1986-11-28 | Catu Ets | Voltmeter monitor for overhead electrical networks |
| CN2692679Y (en) * | 2003-08-07 | 2005-04-13 | 西安福润德电子科技有限公司 | Digital high-voltage acoustooptical electroscope |
| CN201057534Y (en) * | 2007-04-25 | 2008-05-07 | 夏大洪 | Induction type digital high-voltage electroscope |
| CN201562007U (en) * | 2009-12-08 | 2010-08-25 | 武汉大学 | Intelligent non-contact type high-voltage electroscope |
| CN204256033U (en) * | 2014-12-11 | 2015-04-08 | 国网上海市电力公司 | A kind of civilian installation induced electricity insulation test rod |
-
2014
- 2014-12-11 CN CN201410765747.6A patent/CN104407202A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2582405A1 (en) * | 1985-05-21 | 1986-11-28 | Catu Ets | Voltmeter monitor for overhead electrical networks |
| CN2692679Y (en) * | 2003-08-07 | 2005-04-13 | 西安福润德电子科技有限公司 | Digital high-voltage acoustooptical electroscope |
| CN201057534Y (en) * | 2007-04-25 | 2008-05-07 | 夏大洪 | Induction type digital high-voltage electroscope |
| CN201562007U (en) * | 2009-12-08 | 2010-08-25 | 武汉大学 | Intelligent non-contact type high-voltage electroscope |
| CN204256033U (en) * | 2014-12-11 | 2015-04-08 | 国网上海市电力公司 | A kind of civilian installation induced electricity insulation test rod |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |