CN208795801U - A kind of automatic no-load voltage ratio tester - Google Patents
A kind of automatic no-load voltage ratio tester Download PDFInfo
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- CN208795801U CN208795801U CN201821369619.XU CN201821369619U CN208795801U CN 208795801 U CN208795801 U CN 208795801U CN 201821369619 U CN201821369619 U CN 201821369619U CN 208795801 U CN208795801 U CN 208795801U
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- 238000012360 testing method Methods 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000001960 triggered effect Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to no-load voltage ratio tester fields, more particularly to a kind of automatic no-load voltage ratio tester, including three-phase power circuit, high-voltage terminal, low voltage terminal, three-phase power circuit, power supply module, acquisition signal circuit, A/D conversion circuit, scm managing system, commercial power interface and switching circuit；Switching circuit electrical connection scm managing system is simultaneously controlled by it on-off, high-voltage terminal and low voltage terminal are respectively provided with zero curve binding post, the zero curve binding post of low voltage terminal is electrically connected to interface of the ground wire, trigger is provided at interface of the ground wire, trigger is electrically connected scm managing system, when interface of the ground wire is not connected ground wire, trigger is not triggered, and scm managing system control switch circuit remains off state.Disposably no-load voltage ratio test can be carried out by the three-phase to transformer, testing efficiency is high, in addition, using the design of trigger, so that, under the premise of ground wire is unearthed, the design that power module can not be powered is grounded protection.
Description
Technical field
The utility model relates to no-load voltage ratio tester field more particularly to a kind of automatic no-load voltage ratio testers.
Background technique
It is provided according to IEC and relative national standards, during power transformer production, user's handover and checking experiment,
Transformer voltage ratio test is the project that must be done.The quality in power transformer product factory and use process can be effectively supervised in this way, prevented
Only transformer turn-to-turn short circuit, open circuit, connection error, tap changer internal fault or contact fault.Currently, domestic similar product master
It is used to single phase poaer supply test item by item, test operation requires height, testing efficiency low, and the data stability tested is low.In electricity
In the semi-finished product of power transformer, finished product production process, before the transformer newly installed puts into operation and according to portion, State Grid
Preventive trial regulation in, it is desirable that transformer carries out turn ratio or voltage than test.Traditional no-load voltage ratio electric bridge is cumbersome, reads
Number is not intuitive, and to carry out necessary conversion, and when test single-phase can only carry out, and working efficiency is low.
In addition, existing no-load voltage ratio tester, is generally requiring for interface of the ground wire to connect with external thread using the first half, when
When ground wire malunion is normal, it will influence the safety in no-load voltage ratio test process.
Utility model content
To solve problems of the prior art, the purpose of the utility model is to provide a kind of automatic no-load voltage ratio tester,
Disposably no-load voltage ratio test can be carried out by the three-phase to transformer, testing efficiency is high, in addition, using the design of trigger, so that, ground
Under the premise of line is unearthed, the design that power module can not be powered is grounded protection.
The purpose of this utility model is achieved through the following technical solutions:
A kind of automatic no-load voltage ratio tester, including three-phase power circuit, high-voltage terminal, low voltage terminal, three phase mains electricity
Road, power supply module, acquisition signal circuit, A/D conversion circuit, scm managing system, commercial power interface and switching circuit；Acquisition letter
High-voltage terminal and low voltage terminal are electrically connected in test article respectively for number circuit, and acquisition signal circuit passes through A/D conversion circuit
It is electrically connected on scm managing system, the test article which is used to handle acquired signal circuit acquisition is high
Press the electric signal of side and low-pressure side three-phase；Commercial power interface is connected on power supply module by switching circuit, the power supply module electricity
Connection three-phase power circuit is simultaneously powered for it；Switching circuit electrical connection scm managing system is simultaneously controlled by it on-off, high-voltage connecting
Line end and low voltage terminal are respectively provided with zero curve binding post, and the zero curve binding post of low voltage terminal is electrically connected to interface of the ground wire, ground
Trigger is provided at line interface, trigger is electrically connected scm managing system, when interface of the ground wire is not connected ground wire, trigger
It is not triggered, scm managing system control switch circuit remains off state.
Further, the trigger is pressure sensor, and when the connector of ground wire is connected at interface of the ground wire, the connector of ground wire
Extrudable pressure sensor makes it be triggered.
Further, scm managing system has been electrically connected display, serial ports and printer.
Further, high-voltage terminal and low voltage terminal are respectively provided with three phase connection and interface of the ground wire；Three phase connection and ground
Line interface is connected respectively test article, which is three-phase transformer.
Further, interface of the ground wire is in blind hole shape, trigger is that contact-making switch is switched and is located in the blind hole of interface of the ground wire.
Further, the tester includes operation panel, high-voltage terminal, low voltage terminal, printer, commercial power interface,
Serial ports connector, display and interface of the ground wire are arranged on the operation panel.
By adopting the above-described technical solution, the utility model has the advantage that
1. a no-load voltage ratio tester overcomes the shortcomings that traditional no-load voltage ratio bridge test, screen is aobvious using large screen color liquid crystal
Display screen, menu in Chinese prompt is easy to operate intuitive, primary to complete the test of three-phase no-load voltage ratio, and test speed is fast, accuracy is high, protection
Perfect in shape and function.This money series instrument provides two kinds of power modes: external AC 220V and internal cell facilitate user to survey
Examination；
2. no-load voltage ratio tester directly forwards after the electric signal by the acquisition signal circuit acquisition each tie point of transformer
No-load voltage ratio calculating is carried out into scm managing system, rather than is calculated by division circuit, the test obtained of this kind of mode
Accuracy is high, and precision is high；
3. having interface of the ground wire on the operation panel of no-load voltage ratio tester, the interface of the ground wire is in poroid, the setting touching in hole
Device is sent out, which can be pressure sensor or contact-making switch；The switch that can control switching circuit by the trigger is dynamic
Make, to realize the ground protection of no-load voltage ratio tester.
Other advantages, target and feature of the utility model will be explained in the following description to a certain extent
It states, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or
Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following
Bright book and claims are achieved and obtained.
Detailed description of the invention
Fig. 1 is the structural circuit schematic diagram of no-load voltage ratio tester；
Fig. 2 is the operating board structure figure of no-load voltage ratio tester.
Appended drawing reference: 1- high-voltage terminal, 2- test article, 3- low voltage terminal, 4- three-phase power circuit, 5- power supply mould
Block, 6- acquire signal circuit, 7-A/D conversion circuit, 8- scm managing system, 9- display, 10- serial ports connector, 11- printing
Machine, 12- commercial power interface, 13- switching circuit, 14- trigger, 15- interface of the ground wire, 16- operation panel, 17-USB interface.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
Embodiment 1
It is as shown in the picture: a kind of automatic no-load voltage ratio tester, including three-phase power circuit 4, high-voltage terminal 1, low pressure wiring
End 3, three-phase power circuit 4, power supply module 5, acquisition signal circuit 6, A/D conversion circuit 7, scm managing system 8, alternating current connect
Mouth 12 and switching circuit 13.
High-voltage terminal 1 and low voltage terminal 3 are electrically connected in test article acquisition signal circuit 6 respectively, acquisition signal electricity
Road 6 is electrically connected on scm managing system 8 by A/D conversion circuit 7, and the scm managing system 8 is acquired for handling
The electric signal of test article high-pressure side and low-pressure side three-phase that signal circuit 6 acquires；Commercial power interface 12 is connected by switching circuit 13
Onto power supply module 5, the power supply module 5 is electrically connected three-phase power circuit 4 and powers for it.
Scm managing system 8 has been electrically connected display 9, serial ports and printer 11.
High-voltage terminal 1 and low voltage terminal 3 are respectively provided with three phase connection and interface of the ground wire 15；Three phase connection and ground wire connect
Mouth 15 is connected respectively test article, which is three-phase transformer.
The three-phase power circuit 4 uses the structure of the three phase mains module in Patent No. CN201620736001.7.
Tester includes operation panel 16, high-voltage terminal 1, low voltage terminal 3, printer 11, commercial power interface 12, string
Mouth connector 10, display 9 and interface of the ground wire 15 are arranged on the operation panel 16.
This automatic no-load voltage ratio tester first connects tester and transformer in the no-load voltage ratio of the transformer of test, when three
Phase power circuit 4 generates electric signal after transformer transformation, can be acquired by acquisition signal circuit 6, then will be by adopting
The phase voltage of each phase of transformer high-low-voltage side is acquired respectively and is sent in scm managing system 8 by collection signal circuit 6,
After calculation processing by the scm managing system 8, obtains the test no-load voltage ratio value of transformer and shown by display 9.
Embodiment 2
A kind of automatic no-load voltage ratio tester of the utility model, including three-phase power circuit 4, high-voltage terminal 1, low pressure wiring
End 3, three-phase power circuit 4, power supply module 5, acquisition signal circuit 6, A/D conversion circuit 7, scm managing system 8, alternating current connect
Mouth 12 and switching circuit 13.Switching circuit 13 is mortgage terminals power supply by three-phase power circuit 4, which is electrically connected
It connects scm managing system 8 and is controlled by it on-off, high-voltage terminal 1 and low voltage terminal 3 are respectively provided with zero curve binding post, low
The zero curve binding post of crimping line end 3 is electrically connected to interface of the ground wire 15, and trigger 14,14 electricity of trigger are provided at interface of the ground wire 15
Scm managing system 8 is connected, when interface of the ground wire 15 is not connected ground wire, trigger 14 is not triggered, scm managing system 8
Control switch circuit 13 remains off state.
Trigger 14 can use pressure sensor, when the connector of ground wire is connected at interface of the ground wire 15, the connector of ground wire
Extrudable pressure sensor makes it be triggered.
Alternatively, interface of the ground wire 15 is in blind hole shape, trigger 14 is that contact-making switch switchs and is located at the blind hole of interface of the ground wire 15
It is interior.
It, can be by trigger 14 to ground wire by way of increasing trigger 14 and switching circuit 13 in the present embodiment
The wiring state of interface 15 is detected, so that this automatic no-load voltage ratio tester will not be powered under the premise of access failure ground wire
Test, so that the safety in utilization of this tester is improved.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and range of the technical program
Cover in the scope of the claims of the utility model.
Claims (6)
1. a kind of automatic no-load voltage ratio tester, it is characterised in that: connect including three-phase power circuit (4), high-voltage terminal (1), low pressure
Line end (3), three-phase power circuit (4), power supply module (5), acquisition signal circuit (6), A/D conversion circuit (7), single-chip microcontroller processing
System (8), commercial power interface (12) and switching circuit (13)；Acquire signal circuit (6) high-voltage terminal (1) and low pressure wiring respectively
End (3) is electrically connected in test article, and acquisition signal circuit (6) is electrically connected to scm managing system by A/D conversion circuit (7)
(8) on, which is used to handle the test article high-pressure side and low-pressure side of acquired signal circuit (6) acquisition
The electric signal of three-phase；Commercial power interface (12) is connected on power supply module (5) by switching circuit (13), the power supply module (5)
Electrical connection three-phase power circuit (4) is simultaneously powered for it；Switching circuit (13) electrical connection scm managing system (8) is simultaneously controlled by it
On-off, high-voltage terminal (1) and low voltage terminal (3) are respectively provided with zero curve binding post, the zero curve binding post of low voltage terminal (3)
It is electrically connected to interface of the ground wire (15), is provided at interface of the ground wire (15) trigger (14), trigger (14) is electrically connected at single-chip microcontroller
Reason system (8), when interface of the ground wire (15) is not connected ground wire, trigger (14) is not triggered, scm managing system (8) control
Switching circuit (13) remains off state.
2. a kind of automatic no-load voltage ratio tester according to claim 1, it is characterised in that: the trigger (14) is pressure sensing
Device, when the connector of ground wire is connected at interface of the ground wire (15), the connector of ground wire, which can extrude pressure sensor, makes it be triggered.
3. a kind of automatic no-load voltage ratio tester according to claim 2, it is characterised in that: scm managing system (8) is electric respectively
It is connected with display (9), serial ports and printer (11).
4. a kind of automatic no-load voltage ratio tester according to claim 3, it is characterised in that: high-voltage terminal (1) and low pressure wiring
End (3) is respectively provided with three phase connection and interface of the ground wire (15)；Three phase connection and interface of the ground wire (15) are connected respectively test article,
The test article is three-phase transformer.
5. a kind of automatic no-load voltage ratio tester according to claim 1, it is characterised in that: interface of the ground wire (15) is in blind hole shape, touching
Hair device (14) is that contact-making switch switchs and is located in the blind hole of interface of the ground wire (15).
6. a kind of automatic no-load voltage ratio tester according to claim 1, it is characterised in that: tester includes operation panel
(16), high-voltage terminal (1), low voltage terminal (3), printer (11), commercial power interface (12), serial ports connector (10), display
(9) it is arranged on the operation panel (16) with interface of the ground wire (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369619.XU CN208795801U (en) | 2018-08-24 | 2018-08-24 | A kind of automatic no-load voltage ratio tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369619.XU CN208795801U (en) | 2018-08-24 | 2018-08-24 | A kind of automatic no-load voltage ratio tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208795801U true CN208795801U (en) | 2019-04-26 |
Family
ID=66206812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821369619.XU Expired - Fee Related CN208795801U (en) | 2018-08-24 | 2018-08-24 | A kind of automatic no-load voltage ratio tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208795801U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426566A (en) * | 2019-08-27 | 2019-11-08 | 国网浙江长兴县供电有限公司 | A kind of hand-held transformer voltage ratio group tester |
| CN114280387A (en) * | 2021-12-03 | 2022-04-05 | 国网浙江省电力有限公司双创中心 | Transformation ratio testing device, transformation ratio testing method, device and medium |
-
2018
- 2018-08-24 CN CN201821369619.XU patent/CN208795801U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426566A (en) * | 2019-08-27 | 2019-11-08 | 国网浙江长兴县供电有限公司 | A kind of hand-held transformer voltage ratio group tester |
| CN114280387A (en) * | 2021-12-03 | 2022-04-05 | 国网浙江省电力有限公司双创中心 | Transformation ratio testing device, transformation ratio testing method, device and medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190426 |