CN207318553U - Numerical monitor high-accuracy heavy-current generator - Google Patents
Numerical monitor high-accuracy heavy-current generator Download PDFInfo
- Publication number
- CN207318553U CN207318553U CN201721274602.1U CN201721274602U CN207318553U CN 207318553 U CN207318553 U CN 207318553U CN 201721274602 U CN201721274602 U CN 201721274602U CN 207318553 U CN207318553 U CN 207318553U
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- China
- Prior art keywords
- current
- current transformer
- pressure regulator
- numerical monitor
- type pressure
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- 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
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- Control Of Eletrric Generators (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
It the utility model is related to a kind of numerical monitor high-accuracy heavy-current generator, it is characterised in that：Pressure regulator AC power inputs autocoupling type pressure regulator through earth leakage circuit-breaker; entered current transformer by the control output of A.C. contactor contact after autocoupling type pressure regulator pressure regulation, the high current punching of current transformer secondary coil output is supplied to tested device by current transformer；Numerical monitor ammeter series connection access Current Transformer Secondary coil, by selecting the current transformer of 1000/1 no-load voltage ratio and the digital ammeter of 0.2 class precision to be used as measurement original paper.With higher display precision, the light and strong current generator that can flexibly move, realizing guarantee test precision but also can effectively lift the target of work efficiency.Maintenance power off time is substantially shorter in practical applications, obtains larger economic benefit and social benefit, and there is stronger application value, meet requirement of the State Grid Corporation of China to safety and services.
Description
Technical field
A kind of numerical monitor high-accuracy heavy-current generator is the utility model is related to, for relay protection and Automation Specialty
First and second equipment high current transmission test；Required special purpose test equipment when belonging to the experiment of electric system Secondary device.
Background technology
The product of professional equipment producer is made of two split parts of pressure regulator and current transformer mostly at present, very heavy,
For instrument using pointer analog current table, precision is very low, cannot meet the needs of experiment work.Therefore scene is badly in need of a kind of
Integral type, high-current equipment easy to remove and with high current display precision carry out transmission test.
The content of the invention
The purpose of this utility model is to provide a kind of numerical monitor high-accuracy heavy-current generator, is a kind of suitable scene
Demand, has a higher display precision, the light and strong current generator that can flexibly move, realization can guarantee test precision again
The target of work efficiency can effectively be lifted.Device context test connection is simple, and current value is directly shown with the levels of precision of 1 ampere of numerical value
Show, meet test accuracy requirement.Complete equipment integrated installation has in the babinet of castor at one, conveniently moving, reduces production
Personnel labor intensity, shortens the interruption maintenance time.
What the technical solution of the utility model was realized in：Numerical monitor high-accuracy heavy-current generator, is protected by electric leakage
Protect switch, autocoupling type pressure regulator, change-over switch, A.C. contactor, current transformer, numerical monitor ammeter and current transformer group
Into；It is characterized in that：Pressure regulator AC power inputs autocoupling type pressure regulator through earth leakage circuit-breaker, by autocoupling type pressure regulator tune
Entered current transformer by the control output of A.C. contactor contact after pressure, the high current punching of current transformer secondary coil output passes through electric current
Mutual inductor is supplied to tested device；Numerical monitor ammeter series connection access Current Transformer Secondary coil, by selecting 1000/1
The digital ammeter of the current transformer of no-load voltage ratio and 0.2 class precision is as measurement original paper.
The autocoupling type pressure regulator is built-in 2 kilovolt-amperes of autocoupling type pressure regulator.
The earth leakage circuit-breaker is switched using 2P32A, rated voltage 400V, rated current 32A.
The A.C. contactor uses CJX2 types, and rated voltage 220V, rated current 20A, two groups of contact shunts, are improved
Current-carrying capacity.
The current transformer uses the voluntarily coiling of 5kVA autocoupling type pressure regulator iron cores, and primary coil retains, secondary coil master around
Group is enclosed using 150 squares of multiply annealed copper wire coilings 28, and additional winding is enclosed using 25 squares of multiply annealed copper wire coilings 22, with main winding
Series connection, improves output end voltage, specifically for small transformation ratio current transformer transmission test.
The digital ammeter uses 0.2 grade of Intelligent Digital formula ammeter of Kawasaki CQ45 types.
The current transformer uses 0.2 grade of LMZJ1000/1 types.
The good effect of the utility model is test data display precision height, can apply test electric current by ampere, ensure
Test accuracy.Equipment is easy to remove, reduces labor intensity, saves the testing time, is reached while shortening and overhauling power off time
To increase economic benefit and the purpose of social benefit.With stronger application value, meet State Grid Corporation of China to safe kimonos
Work the requirement of work.
Brief description of the drawings
Fig. 1 is the internal circuit configuration schematic diagram of the utility model.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings：As shown in Figure 1, numerical monitor high-accuracy heavy-current
Generator, by earth leakage circuit-breaker, autocoupling type pressure regulator, change-over switch, A.C. contactor, current transformer, numerical monitor ammeter
Formed with current transformer；It is characterized in that：Pressure regulator AC power inputs autocoupling type pressure regulator through earth leakage circuit-breaker, passes through
Entered current transformer, the big electricity of current transformer secondary coil output by the control output of A.C. contactor contact after autocoupling type pressure regulator pressure regulation
Flow through core and tested device is supplied to by current transformer；Numerical monitor ammeter series connection access Current Transformer Secondary coil,
By selecting the current transformer of 1000/1 no-load voltage ratio and the digital ammeter of 0.2 class precision to be used as measurement original paper, ensure that aobvious
Show precision.All components are assembled in a cabinet, while four everything wheels are installed in cabinet bottom, improve the shifting of equipment
Dynamic performance, facilitates field test；Due to being provided with earth leakage circuit-breaker, security required during equipment test ensure that.
The autocoupling type pressure regulator is built-in 2 kilovolt-amperes of autocoupling type pressure regulator.
The earth leakage circuit-breaker is switched using 2P32A, rated voltage 400V, rated current 32A.
The A.C. contactor uses CJX2 types, and rated voltage 220V, rated current 20A, two groups of contact shunts, are improved
Current-carrying capacity.
The current transformer uses the voluntarily coiling of 5kVA autocoupling type pressure regulator iron cores, and primary coil retains, secondary coil master around
Group is enclosed using 150 squares of multiply annealed copper wire coilings 28, and additional winding is enclosed using 25 squares of multiply annealed copper wire coilings 22, with main winding
Series connection, improves output end voltage, specifically for small transformation ratio current transformer transmission test.
The digital ammeter uses 0.2 grade of Intelligent Digital formula ammeter of Kawasaki CQ45 types.
The current transformer uses 0.2 grade of LMZJ1000/1 types.
Built-in 2 kilovolt-amperes of autocoupling type pressure regulators are used for the daily experiment for being no more than 500 amperes, when have more High-current output need
When asking, external 5 kilovolt-amperes of pressure regulators can be accessed by change-over switch and contactor control, obtain testing required high current.
Due to having selected high-precision digital ammeter and mutual inductor, reach the output accuracy of 1 ampere of level, be designed with electric current verification
Terminal, periodically can carry out precision checking to equipment.Segmented, the choosing of low current part are used in coiling current transformer secondary coil
With the conducting wire compared with thin section, further mitigate weight, two groups of coils are driven for the current transformer of different no-load voltage ratios respectively
Experiment, the scope of application are wider.
According to subject current transformer ratio size selection instrument lead-out terminal and with being tested current transformer one during experiment
Secondary side is reliably connected, and confirms that pressure regulator turnplate pointer opens strong current generator power switch, digital ammeter after zero-bit
Show that 0 ampere of expression instrument is normal, built-in or external pressure regulator change-over switch is then got into relevant position, by pressure regulator turntable
Adjusted by zero, while observe digital ammeter show value and gradually lifted, stop pressure regulation after reaching required test electric current.Instrument is defeated
Go out high current simulated failure electric current, driving protective relaying device action, strong current generator is closed after completing regulation test event
Power switch, removes test connection, completes test event.
Claims (7)
1. numerical monitor high-accuracy heavy-current generator, is connect by earth leakage circuit-breaker, autocoupling type pressure regulator, change-over switch, exchange
Tentaculum, current transformer, numerical monitor ammeter and current transformer composition；It is characterized in that：Pressure regulator AC power is protected through electric leakage
Shield switch input autocoupling type pressure regulator, is entered unsteady flow after autocoupling type pressure regulator pressure regulation by the control output of A.C. contactor contact
Device, the high current punching of current transformer secondary coil output are supplied to tested device by current transformer；Numerical monitor ammeter
Series connection access Current Transformer Secondary coil, by select 1000/1 no-load voltage ratio current transformer and 0.2 class precision it is digital
Ammeter is as measurement original paper.
2. according to the numerical monitor high-accuracy heavy-current generator described in claim 1, it is characterised in that the autocoupling type
Pressure regulator is built-in 2 kilovolt-amperes of autocoupling type pressure regulator.
3. according to the numerical monitor high-accuracy heavy-current generator described in claim 1, it is characterised in that the electric leakage is protected
Shield switch is switched using 2P32A, rated voltage 400V, rated current 32A.
4. according to the numerical monitor high-accuracy heavy-current generator described in claim 1, it is characterised in that the exchange connects
Tentaculum uses CJX2 types, and rated voltage 220V, rated current 20A, two groups of contact shunts, improve current-carrying capacity.
5. according to the numerical monitor high-accuracy heavy-current generator described in claim 1, it is characterised in that the current transformer
Using the voluntarily coiling of 5kVA autocoupling type pressure regulator iron cores, primary coil retains, and secondary coil main winding uses 150 squares of multiply soft coppers
Line coiling 28 is enclosed, and additional winding is enclosed using 25 squares of multiply annealed copper wire coilings 22, is connected with main winding, improves output end voltage,
Specifically for small transformation ratio current transformer transmission test.
6. according to the numerical monitor high-accuracy heavy-current generator described in claim 1, it is characterised in that described is digital
Ammeter uses 0.2 grade of Intelligent Digital formula ammeter of Kawasaki CQ45 types.
7. according to the numerical monitor high-accuracy heavy-current generator described in claim 1, it is characterised in that the electric current is mutual
Sensor uses 0.2 grade of LMZJ1000/1 types.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721274602.1U CN207318553U (en) | 2017-09-30 | 2017-09-30 | Numerical monitor high-accuracy heavy-current generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721274602.1U CN207318553U (en) | 2017-09-30 | 2017-09-30 | Numerical monitor high-accuracy heavy-current generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207318553U true CN207318553U (en) | 2018-05-04 |
Family
ID=62428862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721274602.1U Expired - Fee Related CN207318553U (en) | 2017-09-30 | 2017-09-30 | Numerical monitor high-accuracy heavy-current generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207318553U (en) |
-
2017
- 2017-09-30 CN CN201721274602.1U patent/CN207318553U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 Termination date: 20180930 |