CN205749639U - wide range ammeter - Google Patents
wide range ammeter Download PDFInfo
- Publication number
- CN205749639U CN205749639U CN201620071900.XU CN201620071900U CN205749639U CN 205749639 U CN205749639 U CN 205749639U CN 201620071900 U CN201620071900 U CN 201620071900U CN 205749639 U CN205749639 U CN 205749639U
- Authority
- CN
- China
- Prior art keywords
- module
- gauge outfit
- wide range
- current detecting
- ammeter
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- 238000005259 measurement Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- 238000004146 energy storage Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a kind of wide range ammeter, this ammeter includes and the current detecting transformer of high voltage electric equipment earth terminal electrical connection, is connected to rectification module and gauge outfit display module on current detecting transformer successively.This utility model high accuracy, the whole process precision of current measurement is within 5%；Passive, directly to measure without other external condition, and use energy storage mode to provide motion energy for counting module, the place of use, without limitation, facilitates the area use not having condition of power supply；Owing to this patent is without internal resistance, this product achieves without internal resistance measurement, and original circuit characteristic does not exist any impact, measures scope big, and range is from 0A 50A；Machinery gauge outfit (gauge outfit display module) outranges protection, is swift in motion, and protection is in time；The state that equipment runs can also be reflected intuitively with display lamp.
Description
Technical field
This utility model relates to a kind of wide range ammeter.
Background technology
The on-line monitoring of electric current in electrical equipment, plays vital effect to electrical network is properly functioning, detects it
Existing product measurement data is more single, the accuracy of measurement, and precision has to be hoisted, and it is the widest to there is range
Situation.The function of like product is the most perfect, and the test parameter of test point can not reach the demand of this product.Existing product
Certainty of measurement is relatively low, and measurement scope compares limitation (range is less).Therefore, we develop wide range ammeter and electricity
Stream detection method adapts to harsher product demand.
Utility model content
Utility model purpose: in order to overcome the deficiencies in the prior art, this utility model provides a kind of high accuracy, makes
With place without the wide range ammeter limited to, range is big and safe and reliable.
For solve above-mentioned technical problem, the technical solution of the utility model be one wide range ammeter, including with high-tension electricity
The current detecting transformer of gas equipment ground end electrical connection, is connected to rectification module and table on current detecting transformer successively
Head display module.
Described current detecting mutual inductor coil turn ratio is 500:1.If turn ratio is too big, then can not effective gathering line
Current signal in road, will be accurate not to back end current display, reduce the certainty of measurement of whole electric current；If turn ratio
The least, do not collect enough signals and have rear currents process altogether.
It is connected on described gauge outfit display module protect module.
Supercurrent alarm module and running status indicating module it is connected to the most respectively on described second rectification module.
The invention also discloses the electric current detecting method of above-mentioned ammeter, including following content:
When electrical equipment circuit to be measured flows through normal earth current, current detecting transformer gather earth current letter
Number, and by the current signal transfer that collects to the rectification module of next stage；After being processed by rectification module, by this electricity
Stream signal is sent to gauge outfit display module display current value, and gauge outfit module is played a protective role by protection module simultaneously, prevents electricity
Flow through big, gauge outfit mechanical devices is caused damage.
While display current value, the signal of rectification module output, also continue to supply running status instruction and supercurrent
Report to the police.
Operation principle:
Wide range current meter work principle: by transformer induced electric current in tested loop, and faradic current is passed through
After rectification, and other a series of process, it is provided that to gauge outfit display module, and demonstrated the most tested by gauge outfit
Current value in loop.When surveyed current value, when exceeding machinery gauge outfit indication range, this product can protect stem-winder automatically
Head so that gauge outfit will not be because of completely partially causing damage.
Beneficial effect: this utility model has the advantages that
1, in high precision, the whole process precision of current measurement is within 5%；
2, passive, directly measure without other external condition, and use energy storage mode to provide motion energy for counting module,
The place used, without limitation, facilitates the area use not having condition of power supply；
3, owing to this patent is without internal resistance, this product achieves without internal resistance measurement, and original circuit characteristic is not existed any shadow
Ringing, measure scope big, range is from 0A 50A；
4, machinery gauge outfit (gauge outfit display module) outranges protection, is swift in motion, and protection is in time；
5, the state that equipment runs can also be reflected intuitively with display lamp.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Detailed description of the invention
With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of wide range ammeter, including the current detecting being electrically connected with high voltage electric equipment earth terminal
Transformer, current detecting mutual inductor coil turn ratio is 500:1, is connected to rectification module on current detecting transformer successively
With gauge outfit display module, gauge outfit display module is connected to protect module, rectification module is connected to supercurrent warning mould the most respectively
Block and running status indicating module.
The detection method of above-mentioned ammeter:
When electrical equipment circuit to be measured flows through normal earth current, current detecting transformer gather earth current letter
Number, and by the current signal transfer that collects to the rectification module of next stage；After being processed by rectification module, by this electricity
Stream signal is sent to gauge outfit display module display current value, and gauge outfit module is played a protective role by protection module simultaneously, prevents electricity
Flow through big, gauge outfit mechanical devices is caused damage, while display current value, the signal of rectification module output, also continues
Continuous supply running status instruction and supercurrent are reported to the police.
The above is only preferred implementation of the present utility model, it should be pointed out that: for the ordinary skill of the art
For personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve
Also protection domain of the present utility model is should be regarded as with retouching.
Claims (3)
1. a wide range ammeter, it is characterised in that: include and the current detecting transformer of high voltage electric equipment earth terminal electrical connection, current detecting transformer is connected to rectification module and gauge outfit display module successively；Described current detecting mutual inductor coil turn ratio is 500:1.
A kind of wide range ammeter, it is characterised in that: it is connected on described gauge outfit display module protect module.
A kind of wide range ammeter, it is characterised in that: it is connected to supercurrent alarm module and running status indicating module on described rectification module the most respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520886170 | 2015-11-09 | ||
| CN2015208861704 | 2015-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749639U true CN205749639U (en) | 2016-11-30 |
Family
ID=55882815
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610048403.2A Pending CN105572454A (en) | 2015-11-09 | 2016-01-25 | Large-measurement-range ammeter and current detecting method thereof |
| CN201620071900.XU Active CN205749639U (en) | 2015-11-09 | 2016-01-25 | wide range ammeter |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610048403.2A Pending CN105572454A (en) | 2015-11-09 | 2016-01-25 | Large-measurement-range ammeter and current detecting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105572454A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572454A (en) * | 2015-11-09 | 2016-05-11 | 国家电网公司 | Large-measurement-range ammeter and current detecting method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2708325Y (en) * | 2004-07-16 | 2005-07-06 | 薛爱儒 | Ammeter having audible and visible alarm |
| CN201569700U (en) * | 2010-01-15 | 2010-09-01 | 管于球 | Panel insertion type digital DC ammeter |
| CN203688647U (en) * | 2014-01-16 | 2014-07-02 | 浙江海洋学院 | Fork type power frequency current meter |
| CN204514993U (en) * | 2015-01-20 | 2015-07-29 | 宋静静 | Gun-type clamp on amperemeter |
| CN105572454A (en) * | 2015-11-09 | 2016-05-11 | 国家电网公司 | Large-measurement-range ammeter and current detecting method thereof |
-
2016
- 2016-01-25 CN CN201610048403.2A patent/CN105572454A/en active Pending
- 2016-01-25 CN CN201620071900.XU patent/CN205749639U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572454A (en) * | 2015-11-09 | 2016-05-11 | 国家电网公司 | Large-measurement-range ammeter and current detecting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105572454A (en) | 2016-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |