CN205666674U - Female switching circuit that allies oneself with cabinet control source of low pressure - Google Patents
Female switching circuit that allies oneself with cabinet control source of low pressure Download PDFInfo
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- CN205666674U CN205666674U CN201620537659.5U CN201620537659U CN205666674U CN 205666674 U CN205666674 U CN 205666674U CN 201620537659 U CN201620537659 U CN 201620537659U CN 205666674 U CN205666674 U CN 205666674U
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- cabinet
- incoming line
- auxiliary contact
- electrical circuit
- circuit breakers
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Abstract
The utility model discloses a female switching circuit that allies oneself with cabinet control source of low pressure, including 1# inlet wire cabinet power supply circuit breaker, contact cabinet power supply circuit breaker and 2# inlet wire cabinet power supply circuit breaker, two auxiliary contact of contact cabinet power supply circuit breaker connect respectively on the combined floodgate return circuit of the combined floodgate return circuit of 1# inlet wire cabinet and 2# inlet wire cabinet, do two auxiliary contact of 1# inlet wire cabinet power supply circuit breaker connect respectively at contact cabinet switching of power on two power inlet wires in electrical interlocks return circuit, two auxiliary contact of the circuit breaker of 2# inlet wire cabinet power supply simultaneously concatenate with two auxiliary contact of 1# inlet wire cabinet power supply circuit breaker respectively. The utility model discloses a mother who has now allies oneself with the switching of the auxiliary contact realization power of cabinet circuit breaker, and through the switching of current equipment completion power, the realization cost is extremely low, adopting female cabinet circuit breaker that allies oneself with to carry out switching of power, having guaranteed exactness, reliability and the security of control switch action, device self reliability is high moreover, circuit safe and reliable.
Description
Technical field
This utility model is specifically related to a kind of low pressure mother cabinet and controls the switching circuit of power supply.
Background technology
Along with the development of national economy technology, commercial production has also reached a brand-new height.At present, the industry of China
Producing and come into a brand-new development track, the reliability requirement of commercial production electricity consumption has also reached unprecedented height
Degree.In low-voltage distribution system, three conjunction two electric interlock structures between two incoming line cabinets and mother cabinet, because they can be at two sets
Reliably switch between power supply, be widely used in mother cabinet and control the switching of power supply.Two conventional incoming line cabinets and mother cabinet
Between three conjunction two electric interlock structures electric hookup as shown in Fig. 1 ~ Fig. 4；Wherein Fig. 1 be 1# incoming line cabinet, contact cabinet and
The electrical connection schematic diagram of 2# incoming line cabinet, in figure, QF1, QF2 and QF3 are divided into other 1# incoming line cabinet to power for electrical circuit breakers, contact cabinet
Chopper and 2# incoming line cabinet are for electrical circuit breakers；Fig. 2 is 1# incoming line cabinet secondary principle wiring figure；Fig. 3 connects for contact cabinet secondary principle
Line chart；Fig. 4 is 2# incoming line cabinet secondary principle wiring figure.Owing to 1# incoming line cabinet is different with the incoming power of 2# incoming line cabinet, low pressure is female
The purpose of the switching circuit that connection cabinet controls power supply is just to enter the power supply of contact cabinet at 1# incoming line cabinet power supply (I section bus) and 2#
Switch reliably between line cabinet power supply (II section bus), and ensure that 1# incoming line cabinet power supply and 2# incoming line cabinet power supply will not be simultaneously
Accessing contact cabinet (if 3 choppers close a floodgate simultaneously, can cause the power supply between 1# incoming line cabinet power supply and 2# incoming line cabinet power supply straight
Connect short circuit, major accident occurs).
At present, in low-voltage distribution system, the control method of two incoming line cabinets and mother cabinet mainly has following several scheme:
Scheme 1: three is closed two electric interlocks and is realized by the auxiliary contact of chopper, the closing circuit series connection of every chopper
The normally opened close point of other two choppers.Mother cabinet is controlled the switching of power supply and is then realized by auxiliary reclay.
Scheme 2: three is closed two electric interlocks and is realized by the auxiliary contact of chopper, the closing circuit series connection of every chopper
The normally opened close point of other two choppers.Mother cabinet is controlled the switching of power supply and is then realized by permutator.
Scheme 3: three is closed the control power supply switching of two electric interlocks and mother cabinet and is realized by PLC.
But, the shortcoming of the prior art of traditional scheme:
Scheme 1: owing to three switchings closing two electric interlocks and mother cabinet control power supply are relatively independent, so can cause
Middle secondary line is too much, increases potential faults point.The power supply switching that controls of mother cabinet is realized by auxiliary reclay, by
In the long-term live line work of auxiliary reclay, the phenomenon such as coil heating that can cause auxiliary reclay.So auxiliary reclay is just
Can often burn, add replacement cost.
Scheme 2: owing to three switchings closing two electric interlocks and mother cabinet control power supply are relatively independent, so can cause
Middle secondary line is too much, increases potential faults point.The control power supply of mother cabinet is realized by permutator, due to permutator
Need operator's manual operation, so can cause complex operation, be unfavorable for operation.
Scheme 3: control to solve three conjunction two electric interlocks very well by PLC and mother cabinet controls power issue.But PLC
High cost, therefore generally seldom apply in actual product.
Utility model content
The purpose of this utility model is to provide a kind of on the basis of the structure not changing original control circuit and device,
Safe and reliable can realize low pressure mother cabinet and control power supply switching, and low pressure mother cabinet with low cost controls cutting of power supply
Change circuit.
This low pressure mother cabinet that this utility model provides controls the switching circuit of power supply, powers open circuit including 1# incoming line cabinet
Device, contact cabinet connect for two auxiliary contact of electrical circuit breakers for electrical circuit breakers, contact cabinet respectively for electrical circuit breakers and 2# incoming line cabinet
It is connected on the closing circuit of 1# incoming line cabinet and the closing circuit of 2# incoming line cabinet；1# incoming line cabinet is for two auxiliary contact of electrical circuit breakers
Being connected to get in touch with on two electric power incoming lines in cabinet power supply switching-electrical interlocks loop, 2# incoming line cabinet is for electrical circuit breakers simultaneously
Two auxiliary contact concatenate for two auxiliary contact of electrical circuit breakers with 1# incoming line cabinet respectively；1# incoming line cabinet closes for electrical circuit breakers
During lock, for two auxiliary contact of electrical circuit breakers, 1# incoming line cabinet ensures that the control power supply of contact cabinet is provided by 1# incoming line cabinet and gets in touch with
Cabinet auxiliary contacts of circuit breaker of powering ensures that 2# incoming line cabinet cannot close a floodgate for electrical circuit breakers；2# incoming line cabinet power breaker closing time,
For two auxiliary contact of electrical circuit breakers, 2# incoming line cabinet ensures that the control power supply of contact cabinet is provided by 2# incoming line cabinet and gets in touch with cabinet confession
Electrical circuit breakers auxiliary contact ensure that 1# incoming line cabinet cannot close a floodgate for electrical circuit breakers；1# incoming line cabinet supplies for electrical circuit breakers and 2# incoming line cabinet
When electrical circuit breakers closes a floodgate simultaneously, two auxiliary contact of 1# incoming line cabinet confession electrical circuit breakers and 2# incoming line cabinet supply two of electrical circuit breakers
Auxiliary contact ensure that getting in touch with cabinet cannot close a floodgate for electrical circuit breakers simultaneously.
Described contact cabinet is normally closed auxiliary contact for two auxiliary contact of electrical circuit breakers.
Described 1# incoming line cabinet for two auxiliary contact of electrical circuit breakers be normally opened auxiliary contact and one normally closed auxiliary
Help contact.
Described 2# incoming line cabinet for two auxiliary contact of electrical circuit breakers be normally opened auxiliary contact and one normally closed auxiliary
Help contact.
Two auxiliary contact of described 1# incoming line cabinet confession electrical circuit breakers and 2# incoming line cabinet supply two auxiliary of electrical circuit breakers
The concatenation of contact, tactile for the normally closed auxiliary of electrical circuit breakers for normally opened auxiliary contact and the 2# incoming line cabinet of electrical circuit breakers for 1# incoming line cabinet
Putting concatenation, 1# incoming line cabinet supplies normally closed auxiliary contact and the normally opened auxiliary contact string of 2# incoming line cabinet confession electrical circuit breakers of electrical circuit breakers
Connect.
This low pressure mother cabinet disclosed in this utility model controls the switching circuit of power supply, by existing mother cabinet open circuit
The auxiliary contact of device realize the switching of power supply, on the basis of the structure not changing existing mother cabinet and device configuration, by existing
Some equipment completes the switching of power supply, it is achieved cost is extremely low；This utility model uses mother cabinet breaker to carry out power supply switching, protects
Having demonstrate,proved the control correctness of switch motion, reliability and safety, and device own reliability is high, circuit safety is reliable.
Accompanying drawing explanation
Fig. 1 is the 1# incoming line cabinet of background technology, contact cabinet and the electrical connection schematic diagram of 2# incoming line cabinet.
Fig. 2 is the 1# incoming line cabinet secondary principle wiring figure of background technology.
Fig. 3 is the contact cabinet secondary principle wiring figure of background technology.
Fig. 4 is the 2# incoming line cabinet secondary principle wiring figure of background technology.
Fig. 5 is the 1# incoming line cabinet secondary principle wiring figure of this utility model technology.
Fig. 6 is the contact cabinet secondary principle wiring figure of this utility model technology.
Fig. 7 is the 2# incoming line cabinet secondary principle wiring figure of this utility model technology.
Detailed description of the invention
This low pressure mother cabinet that being this utility model as shown in Fig. 5 ~ Fig. 7 provides controls the electricity of the switching circuit of power supply
Road system wiring schematic diagram: contact cabinet (indicates 1 in QF2, Fig. 5 and Fig. 7 for two normally closed auxiliary contacts of electrical circuit breakers in figure
Number indicate shown in) be connected on the closing circuit of 1# incoming line cabinet and the closing circuit of 2# incoming line cabinet；1# incoming line cabinet is powered disconnected
One normally opened auxiliary contact of road device and a normally closed auxiliary contact (No. 3 signs in Fig. 6) and 2# incoming line cabinet are for electrical circuit breakers
One normally opened auxiliary contact and normally closed auxiliary contact (No. 2 signs in Fig. 6) are connected to get in touch with the power supply of cabinet and switch-electrically join
Lock circuit pack, is specifically connected as: 1# incoming line cabinet supplies electrical circuit breakers for normally opened auxiliary contact and the 2# incoming line cabinet of electrical circuit breakers
Normally closed auxiliary contact is together serially connected on the electric power incoming line of the first power supply (indicating L1 in Fig. 6 in figure) of contact cabinet, and 1# enters simultaneously
Line cabinet supplies the normally opened auxiliary contact of electrical circuit breakers to be together serially connected in contact for normally closed auxiliary contact and the 2# incoming line cabinet of electrical circuit breakers
On the electric power incoming line of the second source (indicating U in Fig. 6 in figure) of cabinet.
Below in conjunction with Fig. 1, Fig. 5 ~ Fig. 7 work process of the present utility model is described:
Operating mode 1: when 1# incoming line cabinet closes a floodgate for electrical circuit breakers for electrical circuit breakers 2# incoming line cabinet simultaneously, due to contact cabinet
Controlling power supply is supplied the auxiliary contact of electrical circuit breakers and 2# incoming line cabinet to supply the auxiliary contact of electrical circuit breakers to disconnect, now by 1# incoming line cabinet
Contact cabinet cannot electrically close a floodgate, and under this kind of operating mode, 1# incoming line cabinet and 2# incoming line cabinet are all independent powers to its load equipment.
Operating mode 2: after 1# incoming line cabinet powers breaker closing, such I section bus is charged.1# incoming line cabinet is for electrical circuit breakers
Normally opened auxiliary contact Guan Bi normally closed auxiliary contact disconnect, contact cabinet control switch power supply to I section bus.Contact cabinet closes a floodgate
After, contact cabinet normally closed auxiliary contact disconnects, and 2# incoming line cabinet breaks by getting in touch with cabinet normally closed auxiliary contact for the closing circuit of electrical circuit breakers
Opening, now 2# incoming line cabinet cannot electrically close a floodgate for electrical circuit breakers；Under this kind of operating mode, 1# incoming line cabinet powers to contact cabinet.
Operating mode 3: after 2# incoming line cabinet powers breaker closing, such II section bus is charged.2# incoming line cabinet is for electrical circuit breakers
Normally opened auxiliary contact Guan Bi normally closed auxiliary contact disconnect, contact cabinet control switch power supply to II section bus.Contact cabinet closes a floodgate
After, normally closed auxiliary contact disconnects, and the closing circuit of 1# incoming line cabinet is disconnected by the normally closed auxiliary contact getting in touch with cabinet, now 1# incoming line cabinet
Cannot electrically close a floodgate for electrical circuit breakers；Under this kind of operating mode, 2# incoming line cabinet powers to contact cabinet.
Claims (5)
1. low pressure mother cabinet controls a switching circuit for power supply, powers open circuit for electrical circuit breakers, contact cabinet including 1# incoming line cabinet
Device and 2# incoming line cabinet confession electrical circuit breakers, it is characterised in that two auxiliary contact of contact cabinet confession electrical circuit breakers are connected to 1# and enter
On the closing circuit of line cabinet and the closing circuit of 2# incoming line cabinet；1# incoming line cabinet connects respectively for two auxiliary contact of electrical circuit breakers
On two electric power incoming lines in contact cabinet power supply switching-electrical interlocks loop, two of the electrical circuit breakers of 2# incoming line cabinet confession simultaneously auxiliary
Contact is helped to concatenate for two auxiliary contact of electrical circuit breakers with 1# incoming line cabinet respectively；1# incoming line cabinet power breaker closing time, 1#
The control power supply that incoming line cabinet supplies two auxiliary contact of electrical circuit breakers to ensure to get in touch with cabinets is provided by 1# incoming line cabinet and gets in touch with cabinet powers
Auxiliary contacts of circuit breaker ensures that 2# incoming line cabinet cannot close a floodgate for electrical circuit breakers；2# incoming line cabinet power breaker closing time, 2# inlet wire
For two auxiliary contact of electrical circuit breakers, cabinet ensures that the control power supply of contact cabinets is provided by 2# incoming line cabinet and gets in touch with cabinet and powers open circuit
Device auxiliary contact ensure that 1# incoming line cabinet cannot close a floodgate for electrical circuit breakers；1# incoming line cabinet is powered open circuit for electrical circuit breakers and 2# incoming line cabinet
When device closes a floodgate simultaneously, 1# incoming line cabinet is tactile for two auxiliary of electrical circuit breakers for two auxiliary contact and the 2# incoming line cabinet of electrical circuit breakers
Point ensures that contact cabinet cannot close a floodgate for electrical circuit breakers simultaneously.
Low pressure mother cabinet the most according to claim 1 controls the switching circuit of power supply, it is characterised in that described contact cabinet
Two auxiliary contact for electrical circuit breakers are normally closed auxiliary contact.
Low pressure mother cabinet the most according to claim 1 and 2 controls the switching circuit of power supply, it is characterised in that described 1# enters
Line cabinet is normally opened auxiliary contact and a normally closed auxiliary contact for two auxiliary contact of electrical circuit breakers.
Low pressure mother cabinet the most according to claim 3 controls the switching circuit of power supply, it is characterised in that described 2# inlet wire
Cabinet is normally opened auxiliary contact and a normally closed auxiliary contact for two auxiliary contact of electrical circuit breakers.
5. control the switching circuit of power supply according to the low pressure mother cabinet one of claim 4 Suo Shu, it is characterised in that described 1#
Two auxiliary contact of incoming line cabinet confession electrical circuit breakers and 2# incoming line cabinet, for the concatenation of two auxiliary contact of electrical circuit breakers, enter for 1#
Line cabinet supplies the normally closed auxiliary contact of electrical circuit breakers to concatenate for normally opened auxiliary contact and the 2# incoming line cabinet of electrical circuit breakers, and 1# incoming line cabinet supplies
The normally closed auxiliary contact of electrical circuit breakers and 2# incoming line cabinet supply the normally opened auxiliary contact concatenation of electrical circuit breakers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537659.5U CN205666674U (en) | 2016-06-06 | 2016-06-06 | Female switching circuit that allies oneself with cabinet control source of low pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537659.5U CN205666674U (en) | 2016-06-06 | 2016-06-06 | Female switching circuit that allies oneself with cabinet control source of low pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666674U true CN205666674U (en) | 2016-10-26 |
Family
ID=57156211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620537659.5U Active CN205666674U (en) | 2016-06-06 | 2016-06-06 | Female switching circuit that allies oneself with cabinet control source of low pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666674U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602409A (en) * | 2017-02-20 | 2017-04-26 | 烟台中金数据系统有限公司 | Unit power distribution cabinet buscouple linkage system |
| CN108321682A (en) * | 2018-03-26 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of power distribution cabinet linkage control system and its contact cabinet control circuit |
| CN112803581A (en) * | 2021-03-07 | 2021-05-14 | 广东电网有限责任公司广州供电局 | Intelligent power supply control method, system and device of low-voltage contact cabinet |
-
2016
- 2016-06-06 CN CN201620537659.5U patent/CN205666674U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602409A (en) * | 2017-02-20 | 2017-04-26 | 烟台中金数据系统有限公司 | Unit power distribution cabinet buscouple linkage system |
| CN108321682A (en) * | 2018-03-26 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of power distribution cabinet linkage control system and its contact cabinet control circuit |
| CN108321682B (en) * | 2018-03-26 | 2023-09-19 | 河南森源电气股份有限公司 | Power distribution cabinet interlocking control system and contact cabinet control circuit thereof |
| CN112803581A (en) * | 2021-03-07 | 2021-05-14 | 广东电网有限责任公司广州供电局 | Intelligent power supply control method, system and device of low-voltage contact cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 411201 28 Bai Shi Road, Jing Kai District, Xiangtan, Hunan Patentee after: Weisheng Energy Technology Co.,Ltd. Address before: 411201 28 Bai Shi Road, Jing Kai District, Xiangtan, Hunan Patentee before: WASION ELECTRIC Co.,Ltd. |