CN202424598U - Main circuit of self-coupling voltage-reduction starting cabinet - Google Patents
Main circuit of self-coupling voltage-reduction starting cabinet Download PDFInfo
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- CN202424598U CN202424598U CN2011205547420U CN201120554742U CN202424598U CN 202424598 U CN202424598 U CN 202424598U CN 2011205547420 U CN2011205547420 U CN 2011205547420U CN 201120554742 U CN201120554742 U CN 201120554742U CN 202424598 U CN202424598 U CN 202424598U
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- contactor
- circuit breaker
- motor
- main circuit
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- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 11
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Abstract
The utility model relates to a main circuit of a self-coupling voltage-reduction starting cabinet. The main circuit comprises a starting control loop, wherein the starting control loop comprises a main circuit breaker, a first circuit breaker, a second circuit breaker, a third circuit breaker, a first contactor, a second contactor, a third contactor, a fourth contactor, a fifth contactor, a first thermal relay, a second thermal relay and a self-coupling transformer; the main circuit breaker is connected with a first motor by the first circuit breaker, the first contactor and the first thermal relay that are connected in series sequentially; the main circuit breaker is connected with a second motor by the second circuit breaker, the third contactor and the second thermal relay that are connected in series sequentially; the main circuit breaker is connected with the first motor and the second motor respectively by the third circuit breaker, the fifth contactor and the self-coupling transformer that are connected in series sequentially, the second contactor is connected between the self-coupling transformer and the first motor, and the fourth contactor is connected between the self-coupling transformer and the second motor; and an electric interlock is additionally arranged between the fourth contactor and the second contactor, so that only one contactor can be used at any time. According to the main circuit, one self-coupling transformer and one alternating current contactor are reduced, thereby saving investment and production cost.
Description
Technical field
The utility model patent relates to high-tension switch cabinet, specifically is a kind of from lotus root reduced voltage starting cabinet main circuit.
Background technology
In the control circuit of motor, utilize single-circuit transformer to reduce supply voltage, to reduce starting current.The single-circuit transformer outlet side has the different voltages with different tap, can be by regulating motor starting voltage, and to reach the reduction starting current, motor can be adjusted to rated voltage after rotating gradually.This kind start mode is made up of elements such as single-circuit transformer and A.C. contactor, thermal relays, the motivation of can supplying power not Fraquent start with stop, can having overload protection and dead electricity and press protection.In lotus root reduced voltage starting loop, as shown in Figure 1 at present, the components and parts that starting the using and the reserved two motors need dispose are 3 of circuit breakers, 6 of A.C. contactors, 2 of thermal relays, 2 of single-circuit transformers.
Summary of the invention
It is a kind of from lotus root reduced voltage starting cabinet main circuit that the purpose of the utility model is to provide, and the using and the reserved two motors adopts a single-circuit transformer to start.
The technical scheme that realizes the utility model purpose is: a kind of from lotus root reduced voltage starting cabinet main circuit; Its difference is: it comprises the starting control loop, and the starting control loop comprises main circuit breaker, first circuit breaker, second circuit breaker, the 3rd circuit breaker, first contactor, second contactor, the 3rd contactor, the 4th contactor, the 5th contactor, first thermal relay, second thermal relay and a single-circuit transformer; Main circuit breaker is connected to first motor through first circuit breaker, first contactor, first thermal relay of series connection successively; Main circuit breaker is connected to second motor through second circuit breaker, the 3rd contactor, second thermal relay of series connection successively; Main circuit breaker is connected to first motor and second motor respectively through the 3rd circuit breaker, the 5th contactor, the single-circuit transformer of series connection successively; Be connected with second contactor between the single-circuit transformer and first motor, be connected with the 4th contactor between the single-circuit transformer and second motor; The 4th contactor, second contactor are the electrical interlock contactor, and the 4th contactor, second contactor at any time have only one to be in the state of devoting oneself to work.
The starting control loop of the utility model is through the electrical interlock between the contactor, drops into single-circuit transformer, respectively two motors is carried out reduced voltage starting.After reduced voltage starting is accomplished, need several seconds to tens seconds time usually, automatically switch to the direct-on-line starting pattern through the time relay.Reach a single-circuit transformer and can control the purpose of two alternating current motors, simplified wiring, save material, reduced production cost.
The utility model has reduced a single-circuit transformer and an A.C. contactor, has optimized once and secondary connection, this is amassed from lotus root reduced voltage starting cabinet reduce, and has practiced thrift investment and production cost.
Description of drawings
Fig. 1 is the control principle figure of the utility model embodiment from lotus root reduced voltage starting cabinet main circuit.
Embodiment
The embodiment that provides below in conjunction with accompanying drawing is described further the utility model.
As shown in Figure 1; A kind of from lotus root reduced voltage starting cabinet main circuit; It comprises the starting control loop, and the starting control loop comprises main circuit breaker QF, the first circuit breaker 1QF, the second circuit breaker 2QF, the 3rd circuit breaker 3QF, the first contactor 1KM, the second contactor 2KM, the 3rd contactor 3KM, the 4th contactor 4KM, the 5th contactor 5KM, the first thermal relay 1KH, the second thermal relay 2KH and a single-circuit transformer 1T; Main circuit breaker QF is connected to the first motor M1 through the first circuit breaker 1QF, the first contactor 1KM, the first thermal relay 1KH of series connection successively; Main circuit breaker QF is connected to the second motor M2 through the second circuit breaker 2QF, the 3rd contactor 3KM, the second thermal relay 2KH of series connection successively; Main circuit breaker QF is connected to the first motor M1 and the second motor M2 respectively through the 3rd circuit breaker 3QF, the 5th contactor 5KM, the single-circuit transformer 1T of series connection successively; Be connected with the second contactor 2KM between the single-circuit transformer 1T and the first motor M1, be connected with the 4th contactor 4KM between the single-circuit transformer 1T and the second motor M2; The 4th contactor 4KM, the second contactor 2KM are the electrical interlock contactor, and the 4th contactor 4KM, the second contactor 2KM at any time have only one to be in the state of devoting oneself to work.
When the control principle that starts the first motor M1 is: the main circuit breaker QF that closes, the first circuit breaker 1QF and the 3rd circuit breaker 3QF, manual or automated manner starts the second contactor 2KM, and the auxiliary contact of the second contactor 2KM start the 5th contactor 5KM.The reduced voltage starting loop of the first motor M1 is QF-3QF-5KM-1T-2KM-M1, and the first motor M1 begins from the lotus root reduced voltage starting.After reduced voltage starting is accomplished, excise the second contactor 2KM automatically through the time relay, drop into the first contactor 1KM simultaneously, the first motor direct-on-line starting operate as normal, start loop is QF-1QF-1KM-1KH-M1.
In like manner; As shown in Figure 1; When the control principle that starts the second motor M2 is: the main circuit breaker QF that closes, the second circuit breaker 2QF and the 3rd circuit breaker 3QF, manual or automated manner starts the 4th contactor 4KM, and the auxiliary contact of the 4th contactor 4KM start the 5th contactor 5KM.The reduced voltage starting loop of the second motor M2 is QF-3QF-5KM-1T-4KM-M2, and the second motor M2 begins from the lotus root reduced voltage starting.After reduced voltage starting is accomplished, excise the 4th contactor 4KM automatically through the time relay, drop into the 3rd contactor 3KM simultaneously, the second motor M2 direct-on-line starting operate as normal, start loop is QF-2QF-3KM-2KH-M2.
Above content is the further explain that combines concrete execution mode that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.
Claims (1)
1. one kind from lotus root reduced voltage starting cabinet main circuit; It is characterized in that: it comprises the starting control loop, and the starting control loop comprises main circuit breaker (QF), first circuit breaker (1QF), second circuit breaker (2QF), the 3rd circuit breaker (3QF), first contactor (1KM), second contactor (2KM), the 3rd contactor (3KM), the 4th contactor (4KM), the 5th contactor (5KM), first thermal relay (1KH), second thermal relay (2KH) and a single-circuit transformer (1T); Main circuit breaker (QF) is connected to first motor (M1) through first circuit breaker (1QF), first contactor (1KM), first thermal relay (1KH) of series connection successively; Main circuit breaker (QF) is connected to second motor (M2) through second circuit breaker (2QF), the 3rd contactor (3KM), second thermal relay (2KH) of series connection successively; Main circuit breaker (QF) is connected to first motor (M1) and second motor (M2) respectively through the 3rd circuit breaker (3QF), the 5th contactor (5KM), the single-circuit transformer (1T) of series connection successively; Be connected with second contactor (2KM) between single-circuit transformer (1T) and first motor (M1), be connected with the 4th contactor (4KM) between single-circuit transformer (1T) and second motor (M2); The 4th contactor (4KM), second contactor (2KM) are the electrical interlock contactor, and the 4th contactor (4KM), second contactor (2KM) at any time have only one to be in the state of devoting oneself to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205547420U CN202424598U (en) | 2011-12-27 | 2011-12-27 | Main circuit of self-coupling voltage-reduction starting cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205547420U CN202424598U (en) | 2011-12-27 | 2011-12-27 | Main circuit of self-coupling voltage-reduction starting cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424598U true CN202424598U (en) | 2012-09-05 |
Family
ID=46749321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205547420U Expired - Lifetime CN202424598U (en) | 2011-12-27 | 2011-12-27 | Main circuit of self-coupling voltage-reduction starting cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424598U (en) |
-
2011
- 2011-12-27 CN CN2011205547420U patent/CN202424598U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Main circuit of self-coupling voltage-reduction starting cabinet Effective date of registration: 20140624 Granted publication date: 20120905 Pledgee: Wuhan rural commercial bank Limited by Share Ltd Optics Valley branch Pledgor: Hubei Century Senyuan Electric Co.,Ltd. Registration number: 2014990000504 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150624 Granted publication date: 20120905 Pledgee: Wuhan rural commercial bank Limited by Share Ltd Optics Valley branch Pledgor: Hubei Century Senyuan Electric Co.,Ltd. Registration number: 2014990000504 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Main circuit of self-coupling voltage-reduction starting cabinet Effective date of registration: 20150803 Granted publication date: 20120905 Pledgee: Wuhan rural commercial bank Limited by Share Ltd Optics Valley branch Pledgor: Hubei Century Senyuan Electric Co.,Ltd. Registration number: 2015990000635 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430200, No. 4, No. 8, great science and Technology Industrial Zone, East Lake New Technology Development Zone, Wuhan, Hubei Patentee after: Hubei century Senyuan Electric Group Co. Ltd. Address before: 430200, No. 4, No. 8, great science and Technology Industrial Zone, East Lake New Technology Development Zone, Wuhan, Hubei Patentee before: Hubei Century Senyuan Electric Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Main circuit of self-coupling voltage-reduction starting cabinet Effective date of registration: 20160801 Granted publication date: 20120905 Pledgee: Wuhan rural commercial bank Limited by Share Ltd Optics Valley branch Pledgor: Hubei century Senyuan Electric Group Co. Ltd. Registration number: 2016420000031 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160726 Granted publication date: 20120905 Pledgee: Wuhan rural commercial bank Limited by Share Ltd Optics Valley branch Pledgor: Hubei Century Senyuan Electric Co.,Ltd. Registration number: 2015990000635 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180710 Granted publication date: 20120905 Pledgee: Wuhan rural commercial bank Limited by Share Ltd Optics Valley branch Pledgor: Hubei century Senyuan Electric Group Co. Ltd. Registration number: 2016420000031 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |