CN105305384B - Circuit phase shortage A.C. contactor latch-up protection device - Google Patents
Circuit phase shortage A.C. contactor latch-up protection device Download PDFInfo
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- CN105305384B CN105305384B CN201510585420.5A CN201510585420A CN105305384B CN 105305384 B CN105305384 B CN 105305384B CN 201510585420 A CN201510585420 A CN 201510585420A CN 105305384 B CN105305384 B CN 105305384B
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- auxiliary reclay
- contactor
- auxiliary
- input
- circuit
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Abstract
The invention discloses a kind of circuit phase shortage A.C. contactor latch-up protection device; it is made up of three fuses and three auxiliary reclays; interlocking is realized: the most any auxiliary reclay does not runs because of circuit phase shortage, and remaining two auxiliary reclay can not run the most immediately by the auxiliary contact series wiring of three auxiliary reclays；Before use, first every auxiliary reclay is connected with corresponding fuse respectively.The present invention is easy for installation; can effectively solve the problem that the problem that under 10 KV open-phase running status, the coil of power distribution station 380V running voltage A.C. contactor burns out because of phase shortage; the present invention can disconnect the three-phase of phase-deficient operation moment and control circuit, thus plays the effect of protection A.C. contactor.Additionally, due to the present invention uses the electrical equipment such as auxiliary reclay, insurance to combine, not using electronic component, therefore device is not by the environmental effect such as temperature, humidity.
Description
Technical field
The present invention relates to a kind of circuit phase shortage A.C. contactor latch-up protection device.
Background technology
All the time, power distribution station is used mostly the ac contactor coil of 380V running voltage, the insurance controlling circuit come
Protection ac contactor coil.But, the coil of the 380V running voltage A.C. contactor of current power distribution station often burns out,
The insurance controlling circuit does not has protective effect, analyzes its reason predominantly: because of fault, supply line occurs that in three-phase, a certain phase is broken
Electricity, the load demand below electric current coils to this phase, directly ac contactor coil is burnt out.10 KV generation phase shortages
During fault, not only only one power distribution station there will be the phenomenon that ac contactor coil burns out, all distribution of this line powering
Platform district A.C. contactor all there will be situation about burning out.Although the problems referred to above can be solved by the way of changing A.C. contactor,
But this settling mode waste of manpower, material resources, the emergency repair time thus brought is long, causes Electricity customers satisfaction rate to reduce；
Furthermore it is also possible to the A.C. contactor of existing 380V running voltage to be all replaced by the A.C. contactor of 220V running voltage,
Although the method is feasible but need substantial amounts of fund input.As can be seen here, prior art requires further improvement.
Summary of the invention
For above-mentioned technical problem present in prior art, the present invention proposes a kind of circuit phase shortage A.C. contactor latch-up protection
Device, it adopts the following technical scheme that
Circuit phase shortage A.C. contactor latch-up protection device, by a fuse, No. two fuses, No. three fuses, in No. one
Between relay, No. two auxiliary reclays and No. three auxiliary reclays composition；Wherein, one end of a fuse and A.C. contactor
Input terminal connect, the input of the other end of a fuse and an auxiliary reclay coil is connected；No. two fusing
One end of device is connected with A.C. contactor No. two input terminals, the other end of No. two fuses and No. two auxiliary reclay coils
Input is connected；One end of No. three fuses is connected with A.C. contactor No. three input terminals, the other end of No. three fuses with
The input series connection of No. three auxiliary reclay coils；The outfan of No. three auxiliary reclay coils controls circuit by No. one and is connected to
On the input of a number auxiliary reclay coil, the outfan of an auxiliary reclay coil controls circuit by No. two and is connected to two
On the input of number auxiliary reclay coil, the outfan of No. two auxiliary reclay coils controls circuits by No. three and is connected to No. three
On the input of auxiliary reclay coil, by No. three auxiliary reclay coils, No. one control circuit, auxiliary reclay coil,
No. two control circuit, No. two auxiliary reclay coils and No. three control circuits and are sequentially connected in series formation one and control loop；A control
Access the moving together contact of an auxiliary reclay on circuit processed, touch No. three dynamic circuit connectors controlling to access on circuit No. three auxiliary reclays
Point；Relay in the middle of accessing No. one on a connection line between an input terminal and an outlet terminal of A.C. contactor
The moving together contact of device and the moving together contact of No. two auxiliary reclays；No. two input terminals and No. two outlet terminals at A.C. contactor
Between No. two connection lines on access No. two auxiliary reclays moving together contact；No. three input terminals and three at A.C. contactor
The moving together contact of No. three auxiliary reclays is accessed on No. three connection lines between number outlet terminal.
Present invention have the advantage that
The circuit phase shortage A.C. contactor latch-up protection device that the present invention addresses, is made up of three fuses and three auxiliary reclays,
Interlocking is realized: the most any auxiliary reclay is not transported because of circuit phase shortage by the auxiliary contact series wiring of three auxiliary reclays
OK, remaining two auxiliary reclay can not run the most immediately；Before use, first every auxiliary reclay is melted with corresponding respectively
Disconnected device is connected.The present invention is easy for installation, it is possible to effectively solve power distribution station 380V under 10 KV open-phase running status
The problem that the coil of running voltage A.C. contactor burns out because of phase shortage, the present invention can disconnect the three-phase control line of phase-deficient operation moment
Road, thus play the effect of protection A.C. contactor.Additionally, due to the present invention uses the electrical equipment such as auxiliary reclay, insurance to combine
Forming, do not use electronic component, therefore device is not by the environmental effect such as temperature, humidity.
Accompanying drawing explanation
Fig. 1 is the control layout of circuit phase shortage A.C. contactor latch-up protection device in the present invention；
Fig. 2 is the working line figure of circuit phase shortage A.C. contactor latch-up protection device in the present invention；
Wherein, number fuse of 1-, No. bis-fuses of 2-, No. tri-fuses of 3-, number auxiliary reclay coil of 4-, 5-bis-
Auxiliary reclay coil, No. tri-auxiliary reclay coils of 6-, 7-mono-controls circuit, and 8-bis-controls circuit, 9-tri-control
Circuit, number connection line of 10-, No. bis-connection lines of 11-, No. tri-connection lines of 12-, number input terminal of L1-, L2-mono-
Outlet terminal, No. bis-input terminals of L3-, No. bis-outlet terminals of L4-, No. tri-input terminals of L5-, No. tri-outlet terminals of L6-, a-
The moving together contact of a number auxiliary reclay, the moving together contact of No. bis-auxiliary reclays of b-, the moving together contact of No. tri-auxiliary reclays of c-,
The moving together contact of-number auxiliary reclay of a ', the moving together contact of-No. three auxiliary reclays of c '.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the present invention is described in further detail by detailed description of the invention:
Shown in Fig. 1 and Fig. 2, circuit phase shortage A.C. contactor latch-up protection device, by a fuse 1, two fusing
2, No. three fuses of device, 4, No. two auxiliary reclays 5 of 3, auxiliary reclay and No. three auxiliary reclays 6 form.
One end of a number fuse 1 is connected with A.C. contactor input terminal L1, the other end of a fuse 1 with
The input series connection of a number auxiliary reclay coil 4；One end of No. two fuses 2 and A.C. contactor No. two input terminal L3
Connect, the input series connection of the other end of No. two fuses 2 and No. two auxiliary reclay coils 5；One end of No. three fuses 3
It is connected with No. three input terminal L5 of A.C. contactor, the other end of No. three fuses 3 and No. three auxiliary reclay coils 6 defeated
Enter end series connection；The outfan of No. three auxiliary reclay coils 6 controls circuit 7 by No. one and is connected to an auxiliary reclay coil
On the input of 4, the outfan of an auxiliary reclay coil 4 controls circuit 8 by No. two and is connected to No. two auxiliary reclays
On the input of coil 5, the outfan of No. two auxiliary reclay coils 5 is connected to No. three centres by No. three control circuits 9 and continues
On the input of electric apparatus coil 6；By No. three auxiliary reclay coils 6, control 7, auxiliary reclay coil 4 of circuit,
No. two control 8, No. two auxiliary reclay coils 5 of circuit and No. three control circuits 9 are sequentially connected in series formation one and control loop.
Wherein, at a moving together contact a ' controlling to access an auxiliary reclay on circuit 7, control to connect on circuit 9 at No. three
Enter the moving together contact c ' of No. three auxiliary reclays；Between an input terminal L1 and an outlet terminal L2 of A.C. contactor
A connection line 10 on access moving together contact a of an auxiliary reclay and moving together contact b of No. two auxiliary reclays；?
Access No. two centres on No. two connection lines 11 between No. two input terminal L3 and No. two outlet terminal L4 of A.C. contactor to continue
Moving together contact b of electrical equipment；No. three connecting lines between No. three input terminal L5 and No. three outlet terminal L6 of A.C. contactor
Moving together contact c of No. three auxiliary reclays is accessed on road 12.
The substantially operation principle of the present invention is: in an auxiliary reclay, No. two auxiliary reclays and No. three auxiliary reclays arbitrarily
When one auxiliary reclay is not because circuit phase shortage is run, No. three auxiliary reclay coils 6, control in circuit 7,
Between relay coil 4, two control 8, No. two auxiliary reclay coils 5 of circuit and No. three and control circuits 9 and be sequentially connected in series formation
Controlling loop to be in not turning on state, remaining two auxiliary reclay can not run the most immediately.The present invention can disconnect scarce moment
The three-phase run mutually controls circuit, thus plays the effect of protection A.C. contactor.
Certainly, only presently preferred embodiments of the present invention described above, the present invention is not limited to enumerate above-described embodiment, it should say
Bright, any those of ordinary skill in the art are under the teaching of this specification, and all equivalents made substitute, substantially become
Shape form, within all falling within the essential scope of this specification, ought to be protected by the present invention.
Claims (1)
1. circuit phase shortage A.C. contactor latch-up protection device, it is characterised in that by a fuse, No. two fuses, No. three
Fuse, an auxiliary reclay, No. two auxiliary reclays and No. three auxiliary reclay compositions；Wherein, the one of a fuse
End is connected with an input terminal of A.C. contactor, the other end of a fuse and the input of an auxiliary reclay coil
Series connection；One end of No. two fuses is connected with A.C. contactor No. two input terminals, in the other end of No. two fuses and No. two
Between relay coil input series connection；One end of No. three fuses is connected with A.C. contactor No. three input terminals, and No. three melt
The other end of disconnected device and the input series connection of No. three auxiliary reclay coils；The outfan of No. three auxiliary reclay coils passes through No. one
Controlling circuit to be connected on the input of an auxiliary reclay coil, the outfan of an auxiliary reclay coil passes through No. two controls
Connection processed is on the input of No. two auxiliary reclay coils, and the outfan of No. two auxiliary reclay coils passes through No. three controls
Connection on the input of No. three auxiliary reclay coils, by No. three auxiliary reclay coils, No. one control circuit, No. one
Auxiliary reclay coil, No. two control circuits, No. two auxiliary reclay coils and No. three control circuits and are sequentially connected in series one control of formation
Loop processed；A moving together contact controlling to access an auxiliary reclay on circuit, in controlling to access No. three on circuit at No. three
Between the moving together contact of relay；On a connection line between an input terminal and an outlet terminal of A.C. contactor
Access moving together contact and the moving together contact of No. two auxiliary reclays of an auxiliary reclay；No. two ends of incoming cables at A.C. contactor
The moving together contact of No. two auxiliary reclays is accessed on No. two connection lines between son and No. two outlet terminals；At A.C. contactor
The moving together contact of No. three auxiliary reclays is accessed on No. three connection lines between No. three input terminals and No. three outlet terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585420.5A CN105305384B (en) | 2015-09-15 | 2015-09-15 | Circuit phase shortage A.C. contactor latch-up protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585420.5A CN105305384B (en) | 2015-09-15 | 2015-09-15 | Circuit phase shortage A.C. contactor latch-up protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105305384A CN105305384A (en) | 2016-02-03 |
| CN105305384B true CN105305384B (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510585420.5A Expired - Fee Related CN105305384B (en) | 2015-09-15 | 2015-09-15 | Circuit phase shortage A.C. contactor latch-up protection device |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3727103A (en) * | 1972-06-30 | 1973-04-10 | Gen Electric | Three phase system monitoring and control circuit |
| CN2084245U (en) * | 1990-09-19 | 1991-09-04 | 植良明 | Loss-of-phase protector for motor |
| CN101373892A (en) * | 2007-08-20 | 2009-02-25 | 王允清 | Running phase-lacking protector circuit for motor |
| CN202424127U (en) * | 2011-12-16 | 2012-09-05 | 杭州商辂丝绸有限公司 | Overheating open-phase protective device for textile motor |
| CN202737437U (en) * | 2012-07-19 | 2013-02-13 | 济南重工股份有限公司 | Phase failure protection circuit used for three-phase low pressure alternating current power source |
-
2015
- 2015-09-15 CN CN201510585420.5A patent/CN105305384B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3727103A (en) * | 1972-06-30 | 1973-04-10 | Gen Electric | Three phase system monitoring and control circuit |
| CN2084245U (en) * | 1990-09-19 | 1991-09-04 | 植良明 | Loss-of-phase protector for motor |
| CN101373892A (en) * | 2007-08-20 | 2009-02-25 | 王允清 | Running phase-lacking protector circuit for motor |
| CN202424127U (en) * | 2011-12-16 | 2012-09-05 | 杭州商辂丝绸有限公司 | Overheating open-phase protective device for textile motor |
| CN202737437U (en) * | 2012-07-19 | 2013-02-13 | 济南重工股份有限公司 | Phase failure protection circuit used for three-phase low pressure alternating current power source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105305384A (en) | 2016-02-03 |
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Effective date of registration: 20160317 Address after: Fuan Street Office of Jiaozhou city of Shandong Province, Qingdao City, 266300 Suzhou Road No. 2 Applicant after: JIAOZHOU POWER SUPPLY COMPANY, STATE GRID SHANDONG ELECTRIC POWER COMPANY Address before: 266300 Suzhou Road, Jiaozhou, Shandong, No. 2, No. Applicant before: STATE GRID SHANDONG JIAOZHOU POWER SUPPLY CO., LTD. |
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