CN205720449U - For the grounding device resistance monitor preventing people and animals from getting an electric shock - Google Patents
For the grounding device resistance monitor preventing people and animals from getting an electric shock Download PDFInfo
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- CN205720449U CN205720449U CN201620308744.4U CN201620308744U CN205720449U CN 205720449 U CN205720449 U CN 205720449U CN 201620308744 U CN201620308744 U CN 201620308744U CN 205720449 U CN205720449 U CN 205720449U
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- transformator
- grounding device
- animals
- getting
- electric shock
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- 239000004020 conductor Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 3
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Abstract
The utility model discloses the grounding device resistance monitor for preventing people and animals from getting an electric shock, including display lamp, control transformator and indicating lamp box, the low-pressure side controlling transformator is connected on the ground insulation wire of distribution transformer, and display lamp is connected in parallel in the low-pressure side controlling transformator.This grounding device resistance monitor improves monitoring of tools means, can effectively alleviate the heavy test job for grounding device, it is to avoid test leakage, accident, false survey and device housings are charged, it is to avoid equipment runs in spite of illness, prevents people and animals from getting an electric shock dead.
Description
Technical field
This utility model relates to power distribution network detection field, is particularly used for the grounding device resistance monitor preventing people and animals from getting an electric shock.
Background technology
In power system, in order to make power distribution transformer three-phase coil neutral point not be subjected to displacement, keep three-phase voltage balance,
Generally Three-Phase Transformer coil neutral point is connected with the earth by wire and band iron, angle bar, shunt transformer shell, metal structure
Frame, this way claims working earthing and the safety ground of transformator.Each junction point is typically fixed with screw connection, is installing
Time often inadequate specification, run a period of time loosened screw or have corrosion loose contact a little occurs, will increase earth resistance or
Lose ground connection effect, cause power distribution transformer three-phase coil neutral point to be subjected to displacement, power distribution transformer shell and framework
Charged, directly threaten the life security of people and animals.
Therefore, staff must be sent in actual motion periodically or non-periodically grounding device to be carried out heavy test job, this
Just it is easy to test leakage, accident or false situation about surveying, brings potential safety hazard to equipment and the person.Such as power public affairs with Wensu
As a example by department, administer 110 kv substation 3, total capacity 221.5 megavolt-ampere, 11 35kV electric substations, 35 KVs
Article 18, circuit overall length 337.05km, totally 56,10KV circuit, line length 1680.49km, public in power distribution transformer
Become 942, specially become 1947, through operation for many years, the corrosion the most in various degree of grounding device node, along with gas leniently
The change of matter, grounding device resistance is also in change, and it is inadequate for only leaning on regular and irregular test.
Utility model content
For the problems referred to above, this utility model provides the grounding device resistance monitor for preventing people and animals from getting an electric shock.
The purpose of this utility model realizes by the following technical solutions:
For the grounding device resistance monitor preventing people and animals from getting an electric shock, it is characterized in that, including display lamp, control transformator and instruction
Lamp box；The low-pressure side of described control transformator is connected on the ground insulation wire of distribution transformer, and described display lamp is connected in parallel on control
In the low-pressure side of transformator processed；The low-pressure side of described control transformator is by the ground connection band iron being sequentially connected, ground connection angle bar and the earth
It is connected；Described display lamp is arranged in indicating lamp box.
Preferably, described display lamp is rotary acousto-optic display lamp.
Preferably, described ground insulation wire is work and the earthing of casing bus of distribution transformer.
Preferably, 220-240V alternating voltage is accessed in the high-pressure side of described control transformator.
Preferably, the low-pressure side of described control transformator is connected with ground connection band iron screw by wire clamp.
Preferably, described control transformator is that NDK-100VA controls transformator.
The beneficial effects of the utility model are: power distribution transformer grounding device is made that improvement, by installing grounding device
Resistance monitor, improves monitoring of tools means, can effectively alleviate the heavy test job for grounding device, it is to avoid test leakage,
Accident, false survey and device housings are charged, it is to avoid equipment runs in spite of illness, prevents people and animals from getting an electric shock dead.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing is not constituted any limit of the present utility model
System, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to the following drawings
Other accompanying drawing.
Fig. 1 is overall structure schematic diagram of the present utility model.
Reference: display lamp-1；Control transformator-2；Indicating lamp box-3；Low-pressure side-4；Greatly-5；Ground insulation wire
-6；High-pressure side-7；Distribution transformer-8；Ground connection band iron-9；Ground connection angle bar-10.
Detailed description of the invention
With the following Examples this utility model is further described.
The grounding device resistance monitor being used for preventing people and animals from getting an electric shock as shown in Figure 1, including display lamp 1, controls transformator 2
With indicating lamp box 3, display lamp 1 is arranged in indicating lamp box 3, and display lamp 1 is rotary acousto-optic display lamp.Control transformation
The low-pressure side 4 of device 2 is connected on the ground insulation wire 6 of distribution transformer 8, and ground insulation wire 6 is distribution transformer 8
Work and earthing of casing bus.
Display lamp 1 is connected in parallel in the low-pressure side 4 controlling transformator 2, controls the low-pressure side 4 of transformator 2 by being sequentially connected
Ground connection band iron 9, ground connection angle bar 10 are connected with the earth 5, and control the low-pressure side 4 of transformator 2 by wire clamp and ground connection band iron 9
It is connected with screw, and the end of a thread is bifilar crimping, to ensure that wire clamp is fully contacted, reduce contact resistance.Control transformator 2 and connect
Using between ground band iron 9 and be welded to connect, lap-joint have to be larger than 2.5 times of ground connection band iron 9 width, and without rosin joint, and solder joint does
Preservative treatment.Controlling transformator 2 and control transformator for NDK-100VA, 220-240V alternating voltage is accessed in its high-pressure side 7.Excellent
Selection of land, it is also possible to connect electric energy meter harvester and the information of grounding device resistance monitor is uploaded.
The operation principle of this grounding device resistance monitor is as follows: when distribution transformer 8 three-phase current is uneven, screw worked itself loose at wire clamp
When dynamic, burn into or other reasons cause earth resistance to increase, control the low-pressure side 4 both sides generation potential difference shape of transformator 2
Becoming voltage, when ground connection leakage voltage reaches more than safe voltage 24-36V, display lamp 1 starts glittering, and case above is three
Phase current degree of unbalancedness is the glittering value of produced light when being continually changing, and effect is clearly.
The grounding device resistance monitor of the present embodiment, is made that improvement to the grounding device of distribution transformer 8, is connect by installation
Ground device resistance monitor, improves monitoring of tools means, can effectively alleviate the heavy test job for grounding device, keep away
Exempt from test leakage, accident, false survey and device housings charged, it is to avoid equipment runs in spite of illness, prevents people and animals from getting an electric shock dead.
Last it should be noted that, above example is only in order to illustrate the technical solution of the utility model, rather than to this utility model
The restriction of protection domain, although having made to explain to this utility model with reference to preferred embodiment, the ordinary skill people of this area
Member should be appreciated that and can modify the technical solution of the utility model or equivalent, without deviating from this utility model skill
The spirit and scope of art scheme.
Claims (6)
1. for the grounding device resistance monitor preventing people and animals from getting an electric shock, it is characterized in that, including display lamp, control transformator and refer to
Show lamp box；The low-pressure side of described control transformator is connected on the ground insulation wire of distribution transformer, and described display lamp is connected in parallel on control
In the low-pressure side of transformator processed；The low-pressure side of described control transformator is by the ground connection band iron being sequentially connected, ground connection angle bar and the earth phase
Even；Described display lamp is arranged in indicating lamp box.
Grounding device resistance monitor for preventing people and animals from getting an electric shock the most according to claim 1, is characterized in that, described finger
Show that lamp is rotary acousto-optic display lamp.
Grounding device resistance monitor for preventing people and animals from getting an electric shock the most according to claim 1, is characterized in that, described in connect
Ground insulated conductor is work and the earthing of casing bus of distribution transformer.
Grounding device resistance monitor for preventing people and animals from getting an electric shock the most according to claim 1, is characterized in that, described control
220-240V alternating voltage is accessed in the high-pressure side of transformator processed.
Grounding device resistance monitor for preventing people and animals from getting an electric shock the most according to claim 1, is characterized in that, described control
The low-pressure side of transformator processed is connected with ground connection band iron screw by wire clamp.
Grounding device resistance monitor for preventing people and animals from getting an electric shock the most according to claim 1, is characterized in that, described control
Transformator processed is that NDK-100VA controls transformator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308744.4U CN205720449U (en) | 2016-04-13 | 2016-04-13 | For the grounding device resistance monitor preventing people and animals from getting an electric shock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308744.4U CN205720449U (en) | 2016-04-13 | 2016-04-13 | For the grounding device resistance monitor preventing people and animals from getting an electric shock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205720449U true CN205720449U (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620308744.4U Expired - Fee Related CN205720449U (en) | 2016-04-13 | 2016-04-13 | For the grounding device resistance monitor preventing people and animals from getting an electric shock |
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| Country | Link |
|---|---|
| CN (1) | CN205720449U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717367A (en) * | 2016-04-13 | 2016-06-29 | 国网新疆电力公司阿克苏供电公司 | Grounding device resistor monitor for preventing humans and animals from electric shock |
| CN106952719A (en) * | 2017-05-19 | 2017-07-14 | 中国水利水电第四工程局有限公司 | A kind of transformer construction method |
-
2016
- 2016-04-13 CN CN201620308744.4U patent/CN205720449U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717367A (en) * | 2016-04-13 | 2016-06-29 | 国网新疆电力公司阿克苏供电公司 | Grounding device resistor monitor for preventing humans and animals from electric shock |
| CN106952719A (en) * | 2017-05-19 | 2017-07-14 | 中国水利水电第四工程局有限公司 | A kind of transformer construction method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |