CN205749866U - A kind of power meter on-line testing rosette - Google Patents
A kind of power meter on-line testing rosette Download PDFInfo
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- CN205749866U CN205749866U CN201620438263.5U CN201620438263U CN205749866U CN 205749866 U CN205749866 U CN 205749866U CN 201620438263 U CN201620438263 U CN 201620438263U CN 205749866 U CN205749866 U CN 205749866U
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- standard scale
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000009413 insulation Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000012795 verification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000033999 Device damage Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
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Abstract
The utility model discloses a kind of power meter on-line testing rosette, described power meter on-line testing rosette electrically connects with power meter and standard scale respectively, including base, the standard scale current test loop interface group being sequentially arranged in from left to right on base, standard scale voltage test circuit interface group, current circuit connections terminal block, voltage circuit connecting terminal block and power meter exit circuit interface group, also include being located at standard scale current test loop interface group and power meter exits several switching pressing plates at circuit interface group and is located at small air switch F at standard scale voltage test circuit interface group.This utility model has can make voltage transformer secondary side the most short-circuit when calibration power table accesses or power meter changes, and do not open a way in Current Transformer Secondary side, and reconfiguration line is simple and convenient, it is adaptable to the feature of the standardization verifying work of power meter.
Description
Technical field
This utility model relates to technical field of electricity, and especially relating to one can access or power meter replacing at calibration power table
Time, make voltage transformer secondary side the most short-circuit, do not open a way in Current Transformer Secondary side, and reconfiguration line power meter simply and easily exists
Line verification rosette.
Background technology
Power meter is for electromotor, meritorious (idle) power measurement of circuit, as a example by three phase connections, measure equation
I.e. need to access three-phase voltage and the electric current of voltage transformer summation current transformer secondary side.
Power meter, after using some cycles, needs to verify, checks its accuracy.And electromotor, circuit often can not
Have a power failure, so the measurement to its accuracy needs to carry out online.
In the case of electromotor, circuit charging operation, voltage transformer secondary side voltage circuit can not be short-circuit, current transformer
Can not open a way in secondary side current loop, otherwise can cause device damage.And to verify, need to access calibration power table meter, certainly will
Voltage transformer summation current transformer secondary side three-phase circuit is disconnected line, then Current Transformer Secondary side will be caused
Current circuit is opened a way, or causes the short circuit of voltage transformer secondary side potential circuit, causes device damage.
In order to avoid the generation of case above, the most domestic have employing rosette to carry out the reconfiguration line method transferred, but tears down and reconstruct
Line process is loaded down with trivial details, operation inconvenience, careless slightly may result in voltage transformer secondary side short circuit, Current Transformer Secondary side open a way,
Affect operation equipment.
Summary of the invention
When goal of the invention of the present utility model is to overcome power meter of the prior art to need to verify, voltage can be caused
Transformer secondary circuit short-circuit, opens a way, affects the deficiency of operation equipment, it is provided that one can be in standard in Current Transformer Secondary side
When power meter accesses or power meter changes, making voltage transformer secondary side the most short-circuit, not opening a way in Current Transformer Secondary side, and changes
Wiring power meter on-line testing rosette simply and easily.
To achieve these goals, this utility model is by the following technical solutions:
A kind of power meter on-line testing rosette, described power meter on-line testing rosette electrically connects with power meter and standard scale respectively, bag
Include base, the standard scale current test loop interface group that is sequentially arranged in from left to right on base, standard scale voltage test circuit interface
Group, current circuit connections terminal block, voltage circuit connecting terminal block and power meter exit circuit interface group, also include being located at standard
Exit several switching pressing plates at circuit interface group with power meter and be located at the examination of standard scale voltage at table current test loop interface group
Test small air switch F at circuit interface group；Described standard scale respectively with standard scale current test loop interface group, standard scale voltage
If test loop interface group, current circuit connections terminal block, voltage circuit connecting terminal block, power meter exit circuit interface group
Dry switching pressing plate and the electrical connection of small air switch F；Described power meter respectively with standard scale current test loop interface group, electric current
Circuit connection terminal block, voltage circuit connecting terminal block, power meter exit circuit interface group and several switching pressing plate electrical connections.
This utility model is carried out the conducting of circuit by switching pressing plate and is cut-off；By multiple Wiring ports of electrically turning on
Terminal block carries out access and the disconnection of standard scale current loop；By small air switch carry out standard scale meter voltage circuit access and
Disconnect.
Voltage transformer secondary side can be made the most short-circuit, current transformer two when calibration power table accesses or power meter changes
Do not open a way in secondary side, and reconfiguration line is simple and convenient.
Therefore, this utility model has and can make voltage transformer secondary side when calibration power table accesses or power meter changes
The most short-circuit, do not open a way in Current Transformer Secondary side, and reconfiguration line is simple and convenient, it is adaptable to the standardization verifying work of power meter
Effect.
As preferably, described standard scale current test loop interface group includes interface K1, interface K2, interface K3, interface
K4, interface K5 and interface K6；Described standard scale voltage test circuit interface group includes 6 interfaces；Described current circuit connections
Terminal block includes 12 interfaces；Described voltage circuit connecting terminal block includes 8 interfaces；Described power meter exits circuit interface group
Including 6 interfaces；Described switching pressing plate includes switching R1, switch R2, switch R3, switch R4, switch R5 and switch
R6；2 interfaces that described switch R1 exits circuit interface group respectively with power meter electrically connect, described switch R2 respectively with power
Table exits other 2 interfaces electrical connection of circuit interface group, and described switch R3 exits its of circuit interface group respectively with power meter
Yuing the electrical connection of 2 interfaces, described switch R4 electrically connects with interface K1 and interface K4 respectively, described switch R5 respectively with connect
Mouth K2 and interface K5 electrical connection, described switch R6 electrically connects with interface K3 and interface K6 respectively.
As preferably, three-phase voltage U one end with power meter and small air switch F respectively electrically connects, small air switch F
The other end electrically connects with standard scale, the neutral voltage U of three-phase voltageNElectrically connect with power meter and standard scale respectively；Three-phase current I
One end with switch R1, switch R2, one end of switch R3 and power meter electrically connects respectively, the other end of power meter and standard scale
Series connection, the other end of switch R1 electrically connects with switch R4, and the other end of switch R2 electrically connects with switch R5, switch R3's
The other end electrically connects with switch R6, and switch R1, switch R2 and switch R3 are all in parallel with power meter, switch R4, switch R5
All in parallel with standard scale with switch R6.
As preferably, described base is rectangle.
As preferably, base is externally provided with insulation sleeve.
Therefore, this utility model has the advantages that and can make electricity when calibration power table accesses or power meter changes
Pressure transformer secondary side is the most short-circuit, and do not open a way in Current Transformer Secondary side, and reconfiguration line is simple and convenient, it is adaptable to the mark of power meter
Standardization verifying work.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model；
Fig. 2 be a kind of power meter of the present utility model properly functioning time electrical schematic diagram；
Electrical schematic diagram when Fig. 3 is a kind of power meter verification of the present utility model；
Fig. 4 is a kind of power meter of the present utility model electrical schematic diagram when exiting.
In figure: base 1, standard scale current test loop interface group 2, standard scale voltage test circuit interface group 3, electric current return
Road connecting terminal block 4, voltage circuit connecting terminal block 5, power meter exit circuit interface group 6, switching pressing plate 7, air is little opens
Close F8.
Detailed description of the invention
With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings.
Embodiment as shown in Figure 1, Figure 2, Figure 3, Figure 4 is a kind of power meter on-line testing rosette, and described power meter exists
Line verification rosette electrically connects with power meter and standard scale respectively, including base 1, is sequentially arranged in the standard on base from left to right
Table current test loop interface group 2, standard scale voltage test circuit interface group 3, current circuit connections terminal block 4, voltage circuit
Connecting terminal block 5 and power meter exit circuit interface group 6, also include being located at standard scale current test loop interface group and power
Table exits several switching pressing plates 7 at circuit interface group and is located at small air switch F at standard scale voltage test circuit interface group
8；Described standard scale connects with standard scale current test loop interface group, standard scale voltage test circuit interface group, current loop respectively
Line terminals row, voltage circuit connecting terminal block, power meter exit circuit interface group, several switching pressing plate and small air switch F
Electrical connection；Described power meter connects with standard scale current test loop interface group, current circuit connections terminal block, voltage circuit respectively
Line terminals row, power meter exit circuit interface group and several switching pressing plate electrical connections；
Described standard scale current test loop interface group includes interface K1, interface K2, interface K3, interface K4, interface K5 and interface
K6；Described standard scale voltage test circuit interface group includes 6 interfaces；Described current circuit connections terminal block includes that 12 connect
Mouthful；Described voltage circuit connecting terminal block includes 8 interfaces；Described power meter exits circuit interface group and includes 6 interfaces；Institute
State switching pressing plate to include switching R1, switch R2, switch R3, switch R4, switch R5 and switch R6；Described switch R1 divides
2 interfaces not exiting circuit interface group with power meter electrically connect, and described switch R2 exits circuit interface group respectively with power meter
Other 2 interfaces electrical connection, described switch R3 exits remaining 2 interface of circuit interface group respectively and electrically connects with power meter,
Described switch R4 electrically connects with interface K1 and interface K4 respectively, and described switch R5 is electrically connected with interface K2 and interface K5 respectively
Connecing, described switch R6 electrically connects with interface K3 and interface K6 respectively；
Three-phase voltage U one end with power meter and small air switch F respectively electrically connects, the other end of small air switch F and standard scale electricity
Connect, the neutral voltage U of three-phase voltageNElectrically connect with power meter and standard scale respectively；Three-phase current I respectively with switch R1,
One end electrical connection of switch R2, one end of switch R3 and power meter, the other end of power meter is connected with standard scale, switchs R1
The other end electrically connect with switch R4, the other end of switch R2 electrically connects with switching R5, switchs the other end of R3 and switch
R6 electrically connects, and switch R1, switch R2 and switch R3 are all in parallel with power meter, and switch R4, switch R5 and switch R6 are equal
In parallel with standard scale；
Described base is rectangle；Base is insulator foot；Base is externally provided with insulation sleeve.
Use process of the present utility model is as follows:
1, when power meter is properly functioning, standard scale does not accesses, and small air switch F disconnects, and switching pressing plate R1/R2/R3 disconnects, switching
Pressing plate R4/R5/R6 turns on, and three-phase current I and voltage U normally flows into power meter.Electric loop principle is shown in accompanying drawing 2.
2, when standard scale meter accesses verification, multiport binding post K1/K2/K3 and K4/K5/K6 is first accessed in three-phase current loop,
Electric current flows into standard scale, disconnects switching pressing plate R4/R5/R6 the most again, and therefore Current Transformer Secondary current loop would not cut-off.
Finally closing small air switch F, voltage circuit accesses standard scale, and standard scale just can normally measure.Electric loop principle is shown in
Accompanying drawing 3.
3, when power meter exits, as long as being turned on by switching pressing plate R1/R2/R3, now electric current is through switching pressing plate, Bu Huifa
Raw current loop open circuit phenomenon, it is possible to the electric current taking power meter apart accesses loop and voltage access loop, carries out power meter more
Change.Electric loop principle is shown in accompanying drawing 4.
4, the access with power meter of exiting of standard scale is carried out on the contrary according to above order.
This utility model is carried out the conducting of circuit by switching pressing plate and is cut-off；By multiple Wiring ports of electrically turning on
Terminal block carries out access and the disconnection of standard scale current loop；By small air switch carry out standard scale meter voltage circuit access and
Disconnect.
Voltage transformer secondary side can be made the most short-circuit, current transformer two when calibration power table accesses or power meter changes
Do not open a way in secondary side, and reconfiguration line is simple and convenient.
Therefore, this utility model has and can make voltage transformer secondary side when calibration power table accesses or power meter changes
The most short-circuit, do not open a way in Current Transformer Secondary side, and reconfiguration line is simple and convenient, it is adaptable to the standardization verifying work of power meter
Effect.
Should be understood that the present embodiment is merely to illustrate this utility model rather than limits scope of the present utility model.In addition should manage
Solve, read this utility model lecture content after, those skilled in the art this utility model can be made various change or
Amendment, these equivalent form of values fall within the application appended claims limited range equally.
Claims (5)
1. a power meter on-line testing rosette, described power meter on-line testing rosette electrically connects with power meter and standard scale respectively, it is characterized in that, including base (1), standard scale current test loop interface group (2) being sequentially arranged in from left to right on base, standard scale voltage test circuit interface group (3), current circuit connections terminal block (4), voltage circuit connecting terminal block (5) and power meter exit circuit interface group (6), also include being located at standard scale current test loop interface group and power meter exits several switchings pressing plate (7) at circuit interface group and is located at small air switch F(8 at standard scale voltage test circuit interface group)；Described standard scale exits circuit interface group, several switching pressing plates and small air switch F respectively and electrically connects with standard scale current test loop interface group, standard scale voltage test circuit interface group, current circuit connections terminal block, voltage circuit connecting terminal block, power meter；Described power meter exits circuit interface group respectively with standard scale current test loop interface group, current circuit connections terminal block, voltage circuit connecting terminal block, power meter and several switching pressing plates electrically connect.
A kind of power meter on-line testing rosette the most according to claim 1, is characterized in that, described standard scale current test loop interface group includes interface K1, interface K2, interface K3, interface K4, interface K5 and interface K6；Described standard scale voltage test circuit interface group includes 6 interfaces；Described current circuit connections terminal block includes 12 interfaces；Described voltage circuit connecting terminal block includes 8 interfaces；Described power meter exits circuit interface group and includes 6 interfaces；Described switching pressing plate includes switching R1, switch R2, switch R3, switch R4, switch R5 and switch R6；2 interfaces that described switch R1 exits circuit interface group respectively with power meter electrically connect, described switch R2 exits other 2 interfaces of circuit interface group respectively and electrically connects with power meter, described switch R3 exits remaining 2 interface of circuit interface group respectively and electrically connects with power meter, described switch R4 electrically connects with interface K1 and interface K4 respectively, described switch R5 electrically connects with interface K2 and interface K5 respectively, and described switch R6 electrically connects with interface K3 and interface K6 respectively.
A kind of power meter on-line testing rosette the most according to claim 2, is characterized in that, three-phase voltage U one end with power meter and small air switch F respectively electrically connects, and the other end of small air switch F electrically connects with standard scale, the neutral voltage U of three-phase voltageNElectrically connect with power meter and standard scale respectively；Three-phase current I electrically connects with the one end switching R1, switch R2, one end of switch R3 and power meter respectively, the other end of power meter is connected with standard scale, the other end of switch R1 electrically connects with switch R4, the other end of switch R2 electrically connects with switch R5, the other end of switch R3 electrically connects with switch R6, switch R1, switch R2 and switch R3 are all in parallel with power meter, and switch R4, switch R5 and switch R6 are all in parallel with standard scale.
A kind of power meter on-line testing rosette the most according to claim 1, is characterized in that, described base is rectangle.
5. according to a kind of power meter on-line testing rosette described in claim 1 or 2 or 3 or 4, it is characterized in that, base is externally provided with insulation sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620438263.5U CN205749866U (en) | 2016-05-12 | 2016-05-12 | A kind of power meter on-line testing rosette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620438263.5U CN205749866U (en) | 2016-05-12 | 2016-05-12 | A kind of power meter on-line testing rosette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749866U true CN205749866U (en) | 2016-11-30 |
Family
ID=57365992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620438263.5U Active CN205749866U (en) | 2016-05-12 | 2016-05-12 | A kind of power meter on-line testing rosette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205749866U (en) |
-
2016
- 2016-05-12 CN CN201620438263.5U patent/CN205749866U/en active Active
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| GR01 | Patent grant |