CN205749865U - A kind of power meter on-line testing connection circuit - Google Patents
A kind of power meter on-line testing connection circuit Download PDFInfo
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- CN205749865U CN205749865U CN201620436531.XU CN201620436531U CN205749865U CN 205749865 U CN205749865 U CN 205749865U CN 201620436531 U CN201620436531 U CN 201620436531U CN 205749865 U CN205749865 U CN 205749865U
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- power meter
- interface group
- standard scale
- interface
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- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 6
- 238000012795 verification Methods 0.000 description 4
- 238000010586 diagram Methods 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 connection circuit, described power meter on-line testing connection circuit electrically connects with power meter and standard scale respectively, exits circuit interface group including standard scale current loop interface group, standard scale voltage circuit interface group, current loop interface group, voltage circuit interface group, power meter, is located at standard scale current loop interface group and power meter exits several switching switches at circuit interface group and is located at small air switch F at standard scale voltage 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 connection circuit.
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 connection circuit simply and easily.
To achieve these goals, this utility model is by the following technical solutions:
A kind of power meter on-line testing connection circuit, described power meter on-line testing connection circuit electrically connects with power meter and standard scale respectively,
Including standard scale current loop interface group, standard scale voltage circuit interface group, current loop interface group, voltage circuit interface group,
Power meter exits circuit interface group, be located at standard scale current loop interface group and power meter exits several at circuit interface group
Switching switchs and is located at small air switch F at standard scale voltage circuit interface group；Described standard scale respectively with standard scale current loop
Interface group, standard scale voltage circuit interface group, current loop interface group, voltage circuit interface group, power meter exit circuit interface
Group, several switching switches and the electrical connection of small air switch F；Described power meter respectively with standard scale current loop interface group, electricity
Flow back to road interface group, voltage circuit interface group, power meter exits circuit interface group and several switching switches electrically connect.
This utility model is carried out the conducting of circuit by switching switch and is cut-off；Entered by the multiple Wiring ports electrically turned on
The access of column criterion table current loop and disconnection；Access and the disconnection of standard scale meter voltage circuit is carried out by small air switch.
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 loop interface group include interface K1, interface K2, interface K3, interface K4,
Interface K5 and interface K6；Described standard scale voltage circuit interface group includes 6 interfaces；Described current loop interface group includes 12
Individual interface；Described voltage circuit interface group includes 8 interfaces；Described power meter exits circuit interface group and includes 6 interfaces；Institute
State switching switch 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.
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.
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 be a kind of power meter of the present utility model properly functioning time electrical schematic diagram；
Electrical schematic diagram when Fig. 2 is a kind of power meter verification of the present utility model；
Fig. 3 is a kind of power meter of the present utility model electrical schematic diagram when exiting.
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 shows is a kind of power meter on-line testing connection circuit, and described power meter is online
Verification connection circuit electrically connects with power meter and standard scale respectively, it is characterized in that, including standard scale current loop interface group, standard
Table voltage circuit interface group, current loop interface group, voltage circuit interface group, power meter exit circuit interface group, are located at standard
Exit several switching switches at circuit interface group with power meter and be located at standard scale voltage circuit and connect at table current loop interface group
Small air switch F at mouth group；Described standard scale respectively with standard scale current loop interface group, standard scale voltage circuit interface group,
Current loop interface group, voltage circuit interface group, power meter exit circuit interface group, several switching switch and small air switch
F electrically connects；Described power meter respectively with standard scale current loop interface group, current loop interface group, voltage circuit interface group,
Power meter exits circuit interface group and several switching switch electrical connections；
Described standard scale current loop interface group includes interface K1, interface K2, interface K3, interface K4, interface K5 and interface K6；
Described standard scale voltage circuit interface group includes 6 interfaces；Described current loop interface group includes 12 interfaces；Described voltage returns
Road interface group includes 8 interfaces；Described power meter exits circuit interface group and includes 6 interfaces；Described switching switch includes switch
R1, switch R2, switch R3, switch R4, switch R5 and switch R6；Described switch R1 exits loop with power meter respectively
2 interface electrical connections of interface group, described switch R2 exits other 2 interfaces of circuit interface group respectively and is electrically connected with power meter
Connecing, described switch R3 exits remaining 2 interface of circuit interface group respectively and electrically connects with power meter, described switch R4 respectively with
Interface K1 and interface K4 electrical connection, described switch R5 electrically connects with interface K2 and interface K5 respectively, and described switch R6 divides
Do not electrically connect with interface K3 and interface K6；
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.
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 switch R1/R2/R3 disconnects, switching
Switch R4/R5/R6 conducting, three-phase current I and voltage U normally flows into power meter.Electric loop principle is shown in accompanying drawing 1
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, electricity
Stream flows into standard scale, disconnects switching switch 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 2
3, when power meter exits, as long as by switching switch R1/R2/R3 conducting, now electric current is through switching switch, and electric current will not occur
Loop open circuit phenomenon, it is possible to the electric current taking power meter apart accesses loop and voltage access loop, carries out the replacing of power meter.Electricity
Air circuit principle is shown in accompanying drawing 3
4, the access with power meter of exiting of standard scale is carried out on the contrary according to above order.
Standard scale current loop interface group, standard scale voltage circuit interface group, current loop interface group, voltage circuit can be connect
Mouth group, power meter exit circuit interface group, switching switch and small air switch F by multiterminal mouth terminal block, single terminals
The components and parts such as mouth terminal block combine on one piece of insulator foot；Can change to fast and reliable during a kind of power meter on-line testing of composition
The rosette of wiring.
This utility model is carried out the conducting of circuit by switching switch and is cut-off；Entered by the multiple Wiring ports electrically turned on
The access of column criterion table current loop and disconnection；Access and the disconnection of standard scale meter voltage circuit is carried out by small air switch.
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 (3)
1. a power meter on-line testing connection circuit, described power meter on-line testing connection circuit electrically connects with power meter and standard scale respectively, it is characterized in that, exit circuit interface group including standard scale current loop interface group, standard scale voltage circuit interface group, current loop interface group, voltage circuit interface group, power meter, be located at standard scale current loop interface group and power meter exits several switching switches at circuit interface group and is located at small air switch F at standard scale voltage circuit interface group；Described standard scale exits circuit interface group, several switching switches and small air switch F respectively and electrically connects with standard scale current loop interface group, standard scale voltage circuit interface group, current loop interface group, voltage circuit interface group, power meter；Described power meter exits circuit interface group respectively with standard scale current loop interface group, current loop interface group, voltage circuit interface group, power meter and several switching switches electrically connect.
A kind of power meter on-line testing connection circuit the most according to claim 1, is characterized in that, described standard scale current loop interface group includes interface K1, interface K2, interface K3, interface K4, interface K5 and interface K6；Described standard scale voltage circuit interface group includes 6 interfaces；Described current loop interface group includes 12 interfaces；Described voltage circuit interface group includes 8 interfaces；Described power meter exits circuit interface group and includes 6 interfaces；Described switching switch 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 connection circuit 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620436531.XU CN205749865U (en) | 2016-05-12 | 2016-05-12 | A kind of power meter on-line testing connection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620436531.XU CN205749865U (en) | 2016-05-12 | 2016-05-12 | A kind of power meter on-line testing connection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749865U true CN205749865U (en) | 2016-11-30 |
Family
ID=57365826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620436531.XU Active CN205749865U (en) | 2016-05-12 | 2016-05-12 | A kind of power meter on-line testing connection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205749865U (en) |
-
2016
- 2016-05-12 CN CN201620436531.XU patent/CN205749865U/en active Active
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