CN208479171U - A kind of threephase motor temperature control light current and forceful electric power isolation circuit - Google Patents
A kind of threephase motor temperature control light current and forceful electric power isolation circuit Download PDFInfo
- Publication number
- CN208479171U CN208479171U CN201821089704.0U CN201821089704U CN208479171U CN 208479171 U CN208479171 U CN 208479171U CN 201821089704 U CN201821089704 U CN 201821089704U CN 208479171 U CN208479171 U CN 208479171U
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- Prior art keywords
- power
- threephase motor
- isolation circuit
- insurance
- power supply
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- 238000002955 isolation Methods 0.000 title claims abstract description 31
- 230000005611 electricity Effects 0.000 claims abstract description 18
- 241000519996 Teucrium chamaedrys Species 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of threephase motor temperature control light current and forceful electric power isolation circuit, including external 380V three-phase alternating-current supply, threephase motor M and isolation circuit and operating circuit；The isolation circuit includes isolated DC power supply DCC, temperature-sensitive element PTC, midget relay KA and fast molten insurance FU1 and FU2；The operating circuit includes the normally opened contact IC1 and fast molten insurance FU3 and FU4 of working dc power DC, stop button SB1, start button SB2, operation contactor KM, computer board IC, computer board IC.The technical solution of the utility model has the characteristics that structure is simple, easy to operate, dexterously increases isolation light current, is suitable for extensive automatic control system, and forceful electric power is avoided to scurry into work weak electricity system, has stronger practicability, and economic and social benefit is significant.
Description
Technical field
The utility model relates to a kind of control circuit, relate in particular to a kind of threephase motor temperature control light current and forceful electric power every
From circuit.
Background technique
The temperature controller of motor is embedded on the coil of threephase motor intercoil connection by PTC temperature control element, general to use 80 DEG C
Ceramic PTC temperature-sensitive element, is then drawn by both threads, it is gone here and there in the vulnerabilities scan circuit of threephase motor, it is equivalent to
One normally-closed contact.Direct detection coil temperature, when threephase motor is because of phase shortage, load excessive overheats winding, more than 80 DEG C
When PTC element tripping, vulnerabilities scan circuit disconnect, play threephase motor protective effect.
But the insulation when threephase motor winding coil occurs seriously to burn out, between coil L and temperature control element PTC
It is breakdown.At this moment, AC380V can scurry into low-voltage direct DC circuit, and the electrical equipments such as the IC computer board of DC loop is caused to damage,
Cause biggish economic loss.
Therefore, a kind of threephase motor temperature control light current and forceful electric power isolation circuit are designed, there is biggish economy and society meaning
Justice.
Utility model content
The purpose of this utility model is that a kind of threephase motor temperature control light current and forceful electric power isolation circuit are designed, isolation electricity
Road overcomes the deficiencies in the prior art, and structure is simple, easy to operate, reliable and stable, avoids in threephase motor winding coil
Lead to the damage of computer board in light current circuit when occurring seriously to burn out, it is therefore prevented that forceful electric power scurries into low-voltage direct DC circuit, effectively
Protect the electrical equipment of operating circuit.
In order to achieve the above objectives, a kind of threephase motor temperature control light current of the utility model and forceful electric power isolation circuit include external
380V three-phase alternating-current supply, threephase motor M, are serially connected with open circuit between the 380V three-phase alternating-current supply and threephase motor M
Device QF1；It is characterized by: the motor temperature control light current and forceful electric power isolation circuit further include isolation circuit and operating circuit；Institute
Stating isolation circuit includes isolated DC power supply DCC, temperature-sensitive element PTC, midget relay KA and fast molten insurance FU1 and FU2；Institute
Stating operating circuit includes working dc power DC, stop button SB1, start button SB2, operation contactor KM, computer board IC, electricity
The normally opened contact IC1 and insurance FU3 and FU4 of brain plate IC；Every phase power supply of the 380V three-phase alternating-current supply is respectively through running
It is concatenated after the main contacts KM1 of contactor KM with the three-phase electricity source of threephase motor M；The external 5V of the isolated DC power supply DCC
DC power supply, the external 12V DC power supply of working dc power DC；The temperature-sensitive element PTC is arranged in threephase motor M
On the winding coil L in portion；
The anode of the 5V isolated DC power supply DCC of the isolation circuit respectively with fast molten insurance FU1, midget relay KA
It is grounded after coil, the temperature-sensitive element PTC being arranged in inside threephase motor M series connection；One end of the fast molten insurance FU2 and 5V every
Cathode from DC power supply DCC is connected, other end ground connection；
The anode of the 12V working dc power DC of the operating circuit is pressed with insurance FU3, stop button SB1, starting respectively
After button SB2, the normally opened contact IC1 of computer board IC, the coil of operation contactor KM, insurance FU4 concatenation, with 12V working direct current electricity
The cathode of source DC is connected；The normally opened contact KM2 of the operation contactor KM is in parallel with start button SB2；The computer board IC's
After one end is concatenated with the normally opened contact KA1 of midget relay KA, after insuring FU3 even with the anode of 12V working dc power DC
It connects, the other end is connected with after insurance FU4 concatenation with the cathode of 12V working dc power DC；The main touching of the operation contactor KM
Point KM1 is serially connected between circuit breaker Q F1 and threephase motor M.
In the above-mentioned technical solutions, the utility model is provided between forceful electric power and the electrical equipment of light current circuit is isolated electricity
Road, the insulation quilt when the winding coil L of threephase motor M occurs seriously to burn out, between winding coil L and temperature-sensitive element PTC
Breakdown.At this moment, AC380V can scurry into isolation and low-voltage direct isolation circuit and be grounded, at this moment melted fastly in isolation circuit insurance FU1 or
FU2 can be instanteously blown.At this moment, the coil losing electricity release of midget relay KA, normally opened contact KA1 are opened, computer board IC power loss,
IC output contact is opened, and the coil of operation contactor KM is in off-position, to ensure that the electrical equipments such as IC computer board are exempted from
It is damaged, avoids biggish economic loss.The utility model overcomes the deficiencies in the prior art, and structure is simple, reliable and stable,
It avoids when threephase motor winding coil occurs seriously to burn out and leads to the damage of computer board in light current circuit, it is therefore prevented that is strong
Electricity scurries into low-voltage direct DC circuit, the effective protection electrical equipment of operating circuit.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram of threephase motor temperature control light current and forceful electric power isolation circuit of the utility model.
Specific embodiment
With reference to the accompanying drawings and examples to a kind of threephase motor temperature control light current of the utility model and forceful electric power isolation circuit
It is described in further detail.The attached drawing for constituting the application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description for explaining the utility model, do not constitute improper limits to the present invention.
As seen from Figure 1, a kind of threephase motor temperature control light current of the present embodiment and forceful electric power isolation circuit, including external 380V
Three-phase alternating-current supply, threephase motor M, isolation circuit and operating circuit.In the present embodiment, 380V three-phase alternating-current supply and three-phase
Circuit breaker Q F1 is serially connected between motor M.In the present embodiment, every phase power supply of 380V three-phase alternating-current supply connects through operation respectively
It is concatenated after the main contacts KM1 of tentaculum KM with the three-phase electricity source of threephase motor M.
As seen from Figure 1, the isolation circuit of the present embodiment includes isolated DC power supply DCC, temperature-sensitive element PTC, miniature relay
Device KA and fast molten insurance FU1 and FU2.The external 5V DC power supply of isolated DC power supply DCC of the present embodiment, the 5V of isolation circuit
The anode of isolated DC power supply DCC is respectively with fast molten insurance FU1, the coil of midget relay KA, setting in threephase motor M
It is grounded after the temperature-sensitive element PTC series connection in portion；One end of fast molten insurance FU2 is connected with the cathode of 5V isolated DC power supply DCC, another
End ground connection.The temperature-sensitive element PTC of the present embodiment is arranged on the winding coil L inside threephase motor M.
As seen from Figure 1, the operating circuit of the present embodiment includes working dc power DC, stop button SB1, start button
SB2, operation contactor KM, computer board IC, the normally opened contact IC1 of computer board IC and insurance FU3 and FU4.The work of the present embodiment
Make the external 12V DC power supply of DC power supply DC.In the present embodiment, the anode of the 12V working dc power DC of operating circuit is respectively
With insurance FU3, stop button SB1, start button SB2, the normally opened contact IC1 of computer board IC, the coil of operation contactor KM, guarantor
After dangerous FU4 concatenation, it is connected with the cathode of 12V working dc power DC.The normally opened contact KM2 and start button of operation contactor KM
SB2 is in parallel, after one end of computer board IC is concatenated with the normally opened contact KA1 of midget relay KA, works after insuring FU3 with 12V
The anode connection of DC power supply DC, the other end are connected with after insurance FU4 concatenation with the cathode of 12V working dc power DC.This reality
It applies in example, the main contacts KM1 of operation contactor KM is serially connected between circuit breaker Q F1 and threephase motor M.
In the present embodiment, when normal boot-strap, when circuit breaker Q F1 manual closing, working dc power DC connects 12V electricity
Source, isolated DC power supply DCC connect 5V power supply.At this moment temperature-sensitive element PTC is in closed state, and the coil of midget relay KA obtains
Electricity is attracted, normally opened contact KA1 closure, and computer board IC obtains electric, the normally opened contact IC1 closure of computer board IC, operation contactor KM
It is in standby.
When pressing start button SB2, operation contactor KM obtain it is electric and self-locking by the main contacts KM1 of operation contactor KM, three
Phase motor M operation.When pressing stop button SB1, the coil losing electricity of operation contactor KM, threephase motor M is out of service.
In the present embodiment, when the winding coil L of threephase motor M occurs seriously to burn out, winding coil L and thermal element
Insulation between part PTC is breakdown.At this moment, AC380V can scurry into isolation circuit and be grounded, and at this moment isolation circuit melts insurance FU1 fastly
Or FU2 can be instanteously blown.At this moment, the coil losing electricity release of midget relay KA, normally opened contact KA1 are opened, and computer board IC loses
The normally opened contact IC1 of electricity, computer board IC is opened, and operation contactor KM is in off-position.To ensure the electricity such as computer board IC
Gas equipment avoids biggish economic loss from damage.
In the present embodiment, relay uses midget relay KA, can more bear by force than photoelectrical coupler and solid-state relay
The impact of electricity avoids the electrical equipments such as the computer board IC of weak current part from damage.
The present embodiment has the characteristics that structure is simple, easy to operate, dexterously increases isolation circuit, is suitable for extensive
Automatic control system avoids forceful electric power from scurrying into work weak electricity system, practicability with higher, and economic and social benefit is significant.
The above is only the embodiments of the present invention, not imposes any restrictions to the utility model, all according to this
Utility model technical spirit any simple modification, change and the variation of equivalent method to the above embodiments, still belong to
In in the protection scope of technical solutions of the utility model.
Claims (1)
1. a kind of motor temperature control light current and forceful electric power isolation circuit, including external 380V three-phase alternating-current supply, threephase motor M,
Circuit breaker Q F1 is serially connected between the 380V three-phase alternating-current supply and threephase motor M；It is characterized by: the motor temperature
It controls light current and forceful electric power isolation circuit further includes isolation circuit and operating circuit；The isolation circuit include isolated DC power supply DCC,
Temperature-sensitive element PTC, midget relay KA and fast molten insurance FU1 and FU2；The operating circuit include working dc power DC,
Stop button SB1, start button SB2, operation contactor KM, computer board IC, the normally opened contact IC1 of computer board IC and insurance
FU3 and FU4；Every phase power supply of the 380V three-phase alternating-current supply respectively after the main contacts KM1 of operation contactor KM with three-phase
The three-phase electricity source of motor M concatenates；The external 5V DC power supply of isolated DC power supply DCC, the working dc power DC
External 12V DC power supply；The temperature-sensitive element PTC is arranged on the winding coil L inside threephase motor M；
The positive line with fast molten insurance FU1, midget relay KA respectively of the 5V isolated DC power supply DCC of the isolation circuit
It is grounded after the temperature-sensitive element PTC series connection enclose, being arranged in inside threephase motor M；One end of the fast molten insurance FU2 is isolated with 5V
The cathode of DC power supply DCC is connected, other end ground connection；
The 12V working dc power DC of the operating circuit anode respectively with insurance FU3, stop button SB1, start button
After SB2, the normally opened contact IC1 of computer board IC, the coil of operation contactor KM, insurance FU4 concatenation, with 12V working dc power
The cathode of DC is connected；The normally opened contact KM2 of the operation contactor KM is in parallel with start button SB2；The one of the computer board IC
After end is concatenated with the normally opened contact KA1 of midget relay KA, it is connect after insuring FU3 with the anode of 12V working dc power DC,
The other end is connected with after insurance FU4 concatenation with the cathode of 12V working dc power DC；The main contacts of the operation contactor KM
KM1 is serially connected between circuit breaker Q F1 and threephase motor M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821089704.0U CN208479171U (en) | 2018-07-11 | 2018-07-11 | A kind of threephase motor temperature control light current and forceful electric power isolation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821089704.0U CN208479171U (en) | 2018-07-11 | 2018-07-11 | A kind of threephase motor temperature control light current and forceful electric power isolation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208479171U true CN208479171U (en) | 2019-02-05 |
Family
ID=65209822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821089704.0U Withdrawn - After Issue CN208479171U (en) | 2018-07-11 | 2018-07-11 | A kind of threephase motor temperature control light current and forceful electric power isolation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208479171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649530A (en) * | 2018-07-11 | 2018-10-12 | 安徽华茂纺织股份有限公司 | A kind of threephase motor temperature control light current and forceful electric power isolation circuit |
| WO2021135737A1 (en) * | 2019-12-31 | 2021-07-08 | 南京德朔实业有限公司 | Alternating-current electric tool |
-
2018
- 2018-07-11 CN CN201821089704.0U patent/CN208479171U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649530A (en) * | 2018-07-11 | 2018-10-12 | 安徽华茂纺织股份有限公司 | A kind of threephase motor temperature control light current and forceful electric power isolation circuit |
| CN108649530B (en) * | 2018-07-11 | 2024-04-09 | 安徽华茂纺织股份有限公司 | Temperature control weak current and strong current isolation circuit of three-phase motor |
| WO2021135737A1 (en) * | 2019-12-31 | 2021-07-08 | 南京德朔实业有限公司 | Alternating-current electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190722 Address after: 246700 Anhui Taiyang Weaving Technology Co., Ltd. Xinlou Industrial Park, Zongyang County Development Zone, Tongling City, Anhui Province Patentee after: Anhui Taiyang Weaving Technology Co.,Ltd. Address before: 246001 Anhui province Anqing City Daguan District Textile Road No. 80 Patentee before: ANHUI HUAMAO TEXTILE Co.,Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190205 Effective date of abandoning: 20240409 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190205 Effective date of abandoning: 20240409 |