CN203658571U - Switching wiring circuit for double-loop ammeter detection instrument - Google Patents
Switching wiring circuit for double-loop ammeter detection instrument Download PDFInfo
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- CN203658571U CN203658571U CN201320892217.9U CN201320892217U CN203658571U CN 203658571 U CN203658571 U CN 203658571U CN 201320892217 U CN201320892217 U CN 201320892217U CN 203658571 U CN203658571 U CN 203658571U
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Abstract
The utility model discloses a switching wiring circuit for a double-loop ammeter detection instrument. A main loop switching module and an auxiliary loop switching module are utilized to control wiring of a detected meter wiring circuit, wiring modes of four wiring terminals of a detected meter are controlled through the detected meter wiring circuit, the wiring mode can realize a one-incoming two-outgoing and one-incoming four-outgoing current wiring mode and further can realize a four-incoming three-outgoing and three-incoming two-outgoing current wiring mode of the auxiliary loop, through one same verification device, two current wiring modes are compatible, so flexible switching among different meters and different current loops can be realized.
Description
Technical field
The utility model relates to ammeter detection field, relates in particular to a kind of switching connection circuit for double-return circuit electric meter detecting instrument device.
Background technology
In electric energy meter automatic assembly line test macro, electric power system has very important position in testing process, electric device design, the rationality arranging, directly affect input cost amount, the appropriate design of electric device can be avoided the unexpected power-off of power supply and the poor harm that equipment is caused of exchange moment power quality, the reliability and the security that improve checkout equipment system.
At present, the electric current outlet method of the single-phase electric energy meter that national grid specifies is: major loop one-in-and-two-out, minor loop four enter three and go out, and the electric current outlet method of external common single-phase electric energy meter is: major loop one enters four to go out, minor loop three enters two and goes out.Existing pick-up unit is pointed, can only detect other ammeter of unitary class, and detecting instrument can only detect the single-phase electric energy meter of domestic regulation or can only detect external conventional single-phase electric energy meter.Due to manufacturer in process of production, not only only produce the electric energy meter of a type, in detecting, need to use to each type the detecting instrument of configuration, this just makes to exist wrong, detecting instrument configuration to select the problems such as wrong in testing process; Meanwhile, because detection field is identical, but detecting instrument difference, manufacturer just need to configure various detecting instrument, and manufacturer need to drop into substantial contribution and buy multiple detecting instrument; Reduce work efficiency, improve investment of production fund, reduce productivity effect.
Utility model content
The purpose of this utility model is to provide a kind of switching connection circuit of double-return circuit electric meter detecting instrument device, can carry out compatibility for the ammeter of two kinds of specifications and detect, and increases work efficiency, and reduces investment of production.
The technical solution adopted in the utility model is:
A kind of switching connection circuit of double-return circuit electric meter detecting instrument device, comprise electric power loop, commutation circuit and tested table connection circuit, electric power loop is provided with positive end of incoming cables, negative leading-out terminal and tested table connection terminal, tested table connection terminal connects tested table connection circuit, and commutation circuit comprises major loop handover module and subloop handover module, major loop handover module comprises major loop relay the first normally opened contact and major loop relay the second normally opened contact, the first end of major loop relay the first normally opened contact connects positive end of incoming cables, the second end connects the second end of major loop relay the second normally opened contact, the first end of major loop relay the second normally opened contact connects leading-out terminal, subloop handover module comprises subloop relay the first normally opened contact and subloop relay the second normally opened contact, the first end of subloop relay the first normally opened contact connects positive end of incoming cables, the second end of subloop relay the first normally opened contact connects major loop relay second normally opened contact the second end, the first end of subloop relay the second normally opened contact connects negative leading-out terminal, the second end of subloop relay the second normally opened contact connects the second end of major loop relay the first normally opened contact, tested table connection terminal comprises positive connection terminal and negative connection terminal, the second end of positive connection terminal auxiliary connection loop relay the second normally opened contact, the second end of negative connection terminal auxiliary connection loop relay the first normally opened contact, tested table connection circuit comprises four epi-position relay normally open contacts, be respectively the first epi-position relay normally open contact, the second epi-position relay normally open contact, the 3rd epi-position relay normally open contact, the 4th epi-position relay normally open contact, one end of the first epi-position relay normally open contact connects positive connection terminal, the other end connects tested table major loop 1 connection terminal, one end of the second epi-position relay normally open contact connects negative connection terminal, the other end connects tested table major loop 2 connection terminals, one end of the 3rd epi-position relay normally open contact connects positive connection terminal, the other end connects tested table subloop 3 connection terminals, one end of the 4th epi-position relay normally open contact connects negative connection terminal, the other end connects tested table subloop 4 connection terminals.
The utility model utilizes the wiring of major loop handover module and the tested table connection circuit of subloop handover module control, the mode of connection of four connection terminals by the tested ammeter of tested table connection circuit control again, this mode of connection can realize major loop 1 and enter 2 to go out, 1 enters the 4 electric current modes of connection that go out, can also realize subloop 4 enters 3 to go out, 3 enters 2 modes of connection that go out, compatible two kinds of electric current modes of connection under same parity device, can, at difference table meter, between different current returns, switch flexibly.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises electric power loop, commutation circuit and tested table connection circuit, and electric power loop is provided with positive end of incoming cables I, negative leading-out terminal I
owith tested table connection terminal Q1, Q2, tested table connection terminal Q1, Q2 connect tested table connection circuit, and commutation circuit comprises major loop handover module and subloop handover module, major loop handover module comprises major loop relay the first normally opened contact K11 and major loop relay the second normally opened contact K22, the first end a1 of major loop relay the first normally opened contact K11 connects positive end of incoming cables I, the second end connects the second end b2 of major loop relay the second normally opened contact K22, and the first end b1 of major loop relay the second normally opened contact K22 connects negative leading-out terminal I
osubloop handover module comprises subloop relay the first normally opened contact K44 and subloop relay the second normally opened contact K33, the first end d1 of subloop relay the first normally opened contact K44 connects positive end of incoming cables I, the second end d2 of subloop relay the first normally opened contact K44 connects major loop relay second normally opened contact K22 the second end b2, and the first end c1 of subloop relay the second normally opened contact K33 connects negative leading-out terminal I
o, the second end c2 of subloop relay the second normally opened contact K33 connects the second end a2 of major loop relay the first normally opened contact K11, tested table connection terminal Q1, Q2 comprises positive connection terminal Q1 and negative connection terminal Q2, the second end c2 of positive connection terminal Q1 auxiliary connection loop relay the first normally opened contact K44, the second end d2 of negative connection terminal Q2 auxiliary connection loop relay the first normally opened contact K44, tested table connection circuit comprises four epi-position relay normally open contacts, be respectively the first epi-position relay normally open contact K1, the second epi-position relay normally open contact K2, the 3rd epi-position relay normally open contact K3, the 4th epi-position relay normally open contact K4, one end of the first epi-position relay normally open contact K1 connects positive connection terminal Q1, the other end connects tested table major loop 1 connection terminal, one end of the second epi-position relay normally open contact K2 connects negative connection terminal Q2, the other end connects tested table major loop 2 connection terminals, one end of the 3rd epi-position relay normally open contact K3 connects positive connection terminal Q1, the other end connects tested table subloop 3 connection terminals, one end of the 4th epi-position relay normally open contact K4 connects negative connection terminal Q2, the other end connects tested table subloop 4 connection terminals.
Can realize major loop 1 by the utility model and enter 2,1 and enter the 4 electric current modes of connection that go out and subloop 4 and enter 3 to go out, 3 enter the 2 electric current modes of connection that go out, electric power loop provides constant electric current, enters electric current, negative end of incoming cables I by positive end of incoming cables I
oflow out electric current.In the time that use is provided with the detecting instrument of switching connection circuit of double-return circuit electric meter detecting instrument device described in the utility model, can detect many ammeters simultaneously, illustrate as embodiment carries out concrete several mode of connection to detect four ammeters below, as shown in Figure 1:
The mode of connection of major loop work:
Major loop relay the first normally opened contact K11 and the synchronous adhesive of major loop relay the second normally opened contact K22, subloop relay the first normally opened contact K44 and subloop relay the second normally opened contact K33 synchronously disconnect, and have just realized the switching mode of connection of major loop.The major loop mode of connection is an important loop during electric energy meter detects, and is also a kind of mode of electric energy meter testing requirement.Ammeter major loop is divided into again 1 and enters 2 and go out with 1 to enter 4 and go out two kinds of modes:
1 enters 2 goes out the mode of main circuit current wiring:
1 enters 2 goes out to refer to that No. 1 connection terminal of ammeter major loop enters electricity, and No. 2 connection terminals of ammeter major loop go out electricity.Major loop relay the first normally opened contact K11 and the synchronous adhesive of major loop relay the second normally opened contact K22, subloop relay the first normally opened contact K44 and subloop relay the second normally opened contact K33 synchronously disconnect, relay coil in major loop and subloop is located in the switching controls loop of detecting instrument, in the time of needs major loop and subloop switching, control in the switching controls loop of detecting instrument corresponding relay coil obtain electric, thereby control disconnection or the closure of major loop relay contact and subloop relay contact.Tested table the first epi-position relay normally open contact K1, the second epi-position relay normally open contact K2 adhesive, the 3rd epi-position relay normally open contact K3, the 4th epi-position relay normally open contact K4 disconnect, wherein four of tested table relay coils are located in the tested table connection circuit of detecting instrument, in Fig. 1, do not embody, the mode of connection that four relay normally open contacts in tested table connection circuit have been described in Fig. 1, can illustrate the mode of connection of the present utility model; Thereby having realized 1 enters 2 and goes out the main circuit current mode of connection:---------------------------the second epi-position relay normally open contact K2 of the 4th tested table---major loop relay second normally opened contact K22---bears end of incoming cables I to the first epi-position relay normally open contact K1 of the 4th tested table to the second epi-position relay normally open contact K2 of the 3rd tested table to the first epi-position relay normally open contact K1 of the 3rd tested table to the second epi-position relay normally open contact K2 of second tested table to the first epi-position relay normally open contact K1 of second tested table to the second epi-position relay normally open contact K2 of the tested table of First to the first epi-position relay normally open contact K1 of the tested table of First to major loop relay the first normally opened contact K11 to positive end of incoming cables I
o.
1 enters 4 goes out major loop mode and switches:
1 enters 4 goes out to refer to that No. 1 connection terminal of ammeter major loop enters electricity, and negative No. 4, the loop of ammeter connection terminal goes out electricity.Major loop relay the first normally opened contact K11 and the synchronous adhesive of major loop relay the second normally opened contact K22, subloop relay the first normally opened contact K44 and subloop relay the second normally opened contact K33 synchronously disconnect, tested table the first epi-position relay normally open contact K1, the 4th epi-position relay normally open contact K4 adhesive, the second epi-position relay normally open contact K2, the 3rd epi-position relay normally open contact K3 disconnects, just having realized 1 enters 4 and goes out the main circuit current mode of connection:---------------------------the 4th epi-position relay normally open contact K4 of the 4th tested table---major loop relay second normally opened contact K22---bears end of incoming cables I to the first epi-position relay normally open contact K1 of the 4th tested table to the 4th epi-position relay normally open contact K4 of the 3rd tested table to the first epi-position relay normally open contact K1 of the 3rd tested table to the 4th epi-position relay normally open contact K4 of second tested table to the first epi-position relay normally open contact K1 of second tested table to the 4th epi-position relay normally open contact K4 of the tested table of First to the first epi-position relay normally open contact K1 of the tested table of First to major loop relay the first normally opened contact K11 to positive end of incoming cables I
o.
The mode of connection of subloop work:
Subloop relay the first normally opened contact K44 and the synchronous adhesive of subloop relay the second normally opened contact K33, major loop relay the first normally opened contact K11 and major loop relay the second normally opened contact K22 synchronously disconnect, and have just realized the switching of subloop.The subloop mode of connection is an important loop during electric energy meter detects, and is also a kind of mode of electric energy meter testing requirement.Electric current major loop is divided into again 4 and enters 3 and go out with 3 to enter 2 and go out two kinds of modes:
4 enter 3 goes out the subloop electric current mode of connection:
4 enter 3 goes out to refer to that No. 4 connection terminals of ammeter subloop enter electricity, and No. 3 connection terminals of ammeter subloop go out electricity.Subloop relay the first normally opened contact K44 and the synchronous adhesive of subloop relay the second normally opened contact K33, major loop relay the first normally opened contact K11 and major loop relay the second normally opened contact K22 synchronously disconnect, tested table the three epi-position relay normally open contact K3, the 4th epi-position relay normally open contact K4 adhesive, the first epi-position relay normally open contact K1, the second epi-position relay normally open contact K2 disconnect.Just having realized 4 enters 3 and goes out the subloop electric current mode of connection:---------------------------the 3rd epi-position relay normally open contact K3 of the tested table of First---subloop relay second normally opened contact K33---bears end of incoming cables I to the 4th epi-position relay normally open contact K4 of the tested table of First to the 3rd epi-position relay normally open contact K3 of second tested table to the 4th epi-position relay normally open contact K4 of second tested table to the 3rd epi-position relay normally open contact K3 of the 3rd tested table to the 4th epi-position relay normally open contact K4 of the 3rd tested table to the 3rd epi-position relay normally open contact K3 of the 4th tested table to the 4th epi-position relay normally open contact K4 of the 4th tested table to subloop relay the first normally opened contact K44 to positive end of incoming cables I
o.
3 enter 2 goes out the subloop electric current mode of connection:
3 enter 2 goes out to refer to that No. 3 connection terminals of ammeter subloop enter electricity, and No. 2 connection terminals of ammeter major loop go out electricity.Subloop relay the first normally opened contact K44 and the synchronous adhesive of subloop relay the second normally opened contact K33, major loop relay the first normally opened contact K11 and major loop relay the second normally opened contact K22 synchronously disconnect, tested table the second epi-position relay normally open contact K2, the 3rd epi-position relay normally open contact K3 adhesive, the first epi-position relay normally open contact K1, the 4th epi-position relay normally open contact K4 disconnects, just having realized 1 enters 4 and goes out the subloop electric current mode of connection:---------------------------the second epi-position relay normally open contact K2 of the tested table of First---subloop relay second normally opened contact K33---bears end of incoming cables I to the 3rd epi-position relay normally open contact K3 of the tested table of First to the second epi-position relay normally open contact K2 of second tested table to the 3rd epi-position relay normally open contact K3 of second tested table to the second epi-position relay normally open contact K2 of the 3rd tested table to the 3rd epi-position relay normally open contact K3 of the 3rd tested table to the second epi-position relay normally open contact K2 of the 4th tested table to the 3rd epi-position relay normally open contact K3 of the 4th tested table to subloop relay the first normally opened contact K44 to positive end of incoming cables I
o.
The tested table connection circuit of the utility model includes multiple, detecting instrument can detect multiple ammeters simultaneously, and coordinate to be provided with to organize tested table connection terminals more, between every group of tested table connection terminal, be provided with the 5th epi-position relay normally open contact K5, the 5th epi-position relay normally open contact K5 is the normally opened contact K5 in Fig. 1, the effect of the 5th epi-position relay normally open contact K5 is while detecting for ammeter, electric power loop arranges in order to ensure to form to occur detecting neutral, in the time of neutral, by normally opened contact K5 closure, form electric power loop, in the time that needs detect, the state of the 5th epi-position relay normally open contact K5 in disconnecting.
Content of the present utility model is exactly the switching of major loop and 2 kinds of switching modes of subloop and 4 kinds of modes of connection, this method meets the examination criteria of state's electrical network electric energy meter, that current detection device of electric energy meter and electric energy meter detect the unprecedented mode of connection on streamline, thinking novelty, wiring are simple, low in energy consumption, the power supply that can use (4 relays) in the situation of minimum relay to complete electric energy meter is supplied with, and realizes conversion and the wiring of available for different connection modes.
Claims (1)
1. the switching connection circuit of a double-return circuit electric meter detecting instrument device, it is characterized in that: comprise electric power loop, commutation circuit and tested table connection circuit, electric power loop is provided with positive end of incoming cables, negative leading-out terminal and tested table connection terminal, tested table connection terminal connects tested table connection circuit, and commutation circuit comprises major loop handover module and subloop handover module, major loop handover module comprises major loop relay the first normally opened contact and major loop relay the second normally opened contact, the first end of major loop relay the first normally opened contact connects positive end of incoming cables, the second end connects the second end of major loop relay the second normally opened contact, the first end of major loop relay the second normally opened contact connects leading-out terminal, subloop handover module comprises subloop relay the first normally opened contact and subloop relay the second normally opened contact, the first end of subloop relay the first normally opened contact connects positive end of incoming cables, the second end of subloop relay the first normally opened contact connects major loop relay second normally opened contact the second end, the first end of subloop relay the second normally opened contact connects negative leading-out terminal, the second end of subloop relay the second normally opened contact connects the second end of major loop relay the first normally opened contact, tested table connection terminal comprises positive connection terminal and negative connection terminal, the second end of positive connection terminal auxiliary connection loop relay the second normally opened contact, the second end of negative connection terminal auxiliary connection loop relay the first normally opened contact, tested table connection circuit comprises four epi-position relay normally open contacts, be respectively the first epi-position relay normally open contact, the second epi-position relay normally open contact, the 3rd epi-position relay normally open contact, the 4th epi-position relay normally open contact, one end of the first epi-position relay normally open contact connects positive connection terminal, the other end connects tested table major loop 1 connection terminal, one end of the second epi-position relay normally open contact connects negative connection terminal, the other end connects tested table major loop 2 connection terminals, one end of the 3rd epi-position relay normally open contact connects positive connection terminal, the other end connects tested table subloop 3 connection terminals, one end of the 4th epi-position relay normally open contact connects negative connection terminal, the other end connects tested table subloop 4 connection terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892217.9U CN203658571U (en) | 2013-12-31 | 2013-12-31 | Switching wiring circuit for double-loop ammeter detection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892217.9U CN203658571U (en) | 2013-12-31 | 2013-12-31 | Switching wiring circuit for double-loop ammeter detection instrument |
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| Publication Number | Publication Date |
|---|---|
| CN203658571U true CN203658571U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320892217.9U Expired - Fee Related CN203658571U (en) | 2013-12-31 | 2013-12-31 | Switching wiring circuit for double-loop ammeter detection instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738850A (en) * | 2019-03-11 | 2019-05-10 | 广东电网有限责任公司 | A kind of electric energy measuring equipment calibrating installation based on the switching of multi-standard table |
| CN111273213A (en) * | 2020-03-23 | 2020-06-12 | 华立科技股份有限公司 | Ammeter calibration method and device |
| CN114236456A (en) * | 2021-11-11 | 2022-03-25 | 云南电网有限责任公司 | Double-loop single-phase electric energy meter calibrating device and method |
| CN114280341A (en) * | 2021-12-24 | 2022-04-05 | 广东电网有限责任公司 | Experimental terminal box of electric energy meter |
-
2013
- 2013-12-31 CN CN201320892217.9U patent/CN203658571U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738850A (en) * | 2019-03-11 | 2019-05-10 | 广东电网有限责任公司 | A kind of electric energy measuring equipment calibrating installation based on the switching of multi-standard table |
| CN111273213A (en) * | 2020-03-23 | 2020-06-12 | 华立科技股份有限公司 | Ammeter calibration method and device |
| CN114236456A (en) * | 2021-11-11 | 2022-03-25 | 云南电网有限责任公司 | Double-loop single-phase electric energy meter calibrating device and method |
| CN114280341A (en) * | 2021-12-24 | 2022-04-05 | 广东电网有限责任公司 | Experimental terminal box of electric energy meter |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140618 Termination date: 20211231 |