CN202076188U - Intelligent alternating current (AC) contactor with short-circuit breaking capacity - Google Patents
Intelligent alternating current (AC) contactor with short-circuit breaking capacity Download PDFInfo
- Publication number
- CN202076188U CN202076188U CN2011201177369U CN201120117736U CN202076188U CN 202076188 U CN202076188 U CN 202076188U CN 2011201177369 U CN2011201177369 U CN 2011201177369U CN 201120117736 U CN201120117736 U CN 201120117736U CN 202076188 U CN202076188 U CN 202076188U
- Authority
- CN
- China
- Prior art keywords
- contactor
- contact
- output
- control circuit
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Relay Circuits (AREA)
Abstract
The utility model relates to an intelligent alternating current (AC) contactor with short-circuit breaking capacity, which comprises a singlechip controlling device, three independent AC contactor electromagnetic mechanisms and three independent AC contactor contact arc extinguishing devices, wherein each AC contactor electromagnetic mechanism corresponds to one AC contactor contact arc extinguishing device; each AC contactor contact arc extinguishing device comprises two groups of bridge-type contact systems, i.e. four pairs of contacts; the two groups of bridge-type contact systems are mutually connected in series or in parallel; each AC contactor contact arc extinguishing device only switches on/breaks one phase current; and three current sensors are respectively sleeved on static contact bridges of the three AC contactor contact arc extinguishing devices. Through the singlechip controlling device, the intelligent AC contactor can realize that three AC contactor contact systems are switched on near a point of zero voltage when the intelligent AC contactor is normally and frequently operated; the circuit is reliably broken when the three-phase current crosses zero, and the contacts can rapidly open to cut off a short-circuited current when the fault of short circuit happen; therefore, the intelligent AC contactor has short-circuit breaking capacity and current-limiting performance.
Description
Technical field
The utility model relates to a kind of intelligent AC contactor with short circuit breaking capacity.
Background technology
Short-circuit protection is the most important assurance of electric power system and the operation of automatic control system normal reliable, all A.C. contactors all only have the function of frequent operation connection and branch deenergizing at present, do not have the short trouble breaking capacity, institutes such as Zhang Peiming obtain the A.C. contactor electromagnetic mechanism that patent " high-performance Combined Type Intelligent AC Contactor " (patent No. 200720009050.1) adopts two platform independent, the A.C. contactor contact arc-extinguishing device of two platform independent, first A.C. contactor contact apparatus comprises two groups of contact systems, two groups of contact systems are only connected or the electric current of this phase is mutually at first cut-off in disjunction, second A.C. contactor contact apparatus has two groups of contacts, cut-off phase after being respectively applied for connection or disjunction other two, realize near three-phase voltage connection zero point; Can be exactly open during near zero passage, make the breaking arc energy still less, can realize that few arc or non-arc breaking are disconnected at three-phase current; But because two groups of contacts of second A.C. contactor, cut-off phase after being respectively applied for connection or disjunction other two, just each group contact system is connected or disjunction one phase current, its contact system arc extinguishing ability, cut-offfing phase current after can't guaranteeing can both reliable disjunction when current over-zero, because contact system arc extinguishing ability is not carried out the short trouble earlier detection again, when short trouble takes place, do not have short circuit breaking capacity
Summary of the invention
The purpose of this utility model just provides a kind of intelligent AC contactor with short circuit breaking capacity, three A.C. contactors of this electrical equipment have two groups of bridge contact systems separately, strengthen the arc extinguishing ability of contact system significantly, in the time of being implemented in normal frequent operation by monolithic processor control device, three A.C. contactor contact systems are connected near point of zero voltage, the reliable deenergizing of dividing when the three-phase current zero passage, when short trouble takes place, carry out the short trouble earlier detection, disconnect electromagnetic mechanism immediately, contact can be opened fast, cutting-off of short-circuit electric current, have short circuit breaking capacity and current limiting characteristic, it has well normal frequent operation Zero current disjunction and short trouble breaking capacity to the utility model through similar evidence.
The purpose of this utility model is to realize like this, a kind of intelligent AC contactor with short circuit breaking capacity, it is characterized in that, described intelligent AC contactor with short circuit breaking capacity comprises: monolithic processor control device, the A.C. contactor electromagnetic mechanism of three platform independent, the A.C. contactor contact arc-extinguishing device of three platform independent; Every corresponding A.C. contactor contact arc-extinguishing device of A.C. contactor electromagnetic mechanism, each A.C. contactor electromagnetic mechanism includes one group of moving iron core, static iron core, coil, reaction spring; Every A.C. contactor contact arc-extinguishing device includes the first movable contact bridge, the second movable contact bridge, first moving contact, second moving contact, first fixed contact, second fixed contact, the first stationary contact bridge and the second stationary contact bridge of two groups of bridge contact systems, a contact supporting, an arc-extinguish chamber; The described first movable contact bridge, the second movable contact bridge and first moving contact, second moving contact are fixed on the contact supporting, and contact supporting is installed on the moving iron core, and every A.C. contactor contact arc-extinguishing device is only connected disjunction one phase current respectively; All be with current sensor on the first stationary contact bridge of every A.C. contactor contact arc-extinguishing device therein.
In the utility model one embodiment, every A.C. contactor contact arc-extinguishing device includes two groups of bridge contact systems, and described two groups of bridge contact systems are serial or parallel connections.
Originally the monolithic processor control device that has the intelligent AC contactor of short circuit breaking capacity is carved connection A.C. contactor electromagnetic mechanism coil current in due course, the contact that can guarantee three A.C. contactor contact arc-extinguishing devices is connected near zero point at three-phase voltage respectively exactly, when requiring normal disjunction, monolithic processor control device is carved in due course and is cut off A.C. contactor electromagnetic mechanism coil current, because every A.C. contactor all has two groups of bridge contact systems can reduce the breaking arc energy of every pair of contact, strengthened the arc extinguishing ability of contact system significantly, two groups of bridge contact systems that guarantee three A.C. contactor contact arc-extinguishing devices open the reliable deenergizing of dividing when the three-phase current zero passage at three-phase current during near zero passage.Monolithic processor control device was by short trouble earlier detection fast shut-off A.C. contactor electromagnetic mechanism coil current when this electrical equipment took place at short trouble; then by mechanism's quick acting; the contact of two groups of bridge contact systems of three A.C. contactor contact arc-extinguishing devices is opened fast; the fast shut-off short circuit current has the defencive function of short circuit breaking capacity.
The utility model compared with prior art; when requiring normal disjunction; because every A.C. contactor all has two groups of bridge contact systems can reduce the breaking arc energy of every pair of contact; strengthened the arc extinguishing ability of contact system significantly; the reliable deenergizing of dividing when the three-phase current zero passage; when taking place, short trouble two groups of bridge contact systems are all arranged owing to every A.C. contactor; by short trouble earlier detection and mechanism's quick acting energy fast shut-off short circuit current; defencive function with short circuit breaking capacity; has reliable and stable work, characteristics such as function is strong.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the circuit part of monolithic processor control device of the present utility model connects schematic block diagram.
Label declaration: A is a monolithic processor control device; B1 is first A.C. contactor electromagnetic mechanism; C1 is first A.C. contactor contact arc-extinguishing device; B2 is second A.C. contactor electromagnetic mechanism; C2 is second A.C. contactor contact arc-extinguishing device; B3 is the 3rd an A.C. contactor electromagnetic mechanism; C3 is the 3rd an A.C. contactor contact arc-extinguishing device; Z is a rectification circuit; Z1 is first A.C. contactor master element; Z2 is second A.C. contactor master element; Z3 is the 3rd an A.C. contactor master element; Z11 is first A.C. contactor retentive control element; Z12 is second A.C. contactor retentive control element; Z13 is the 3rd an A.C. contactor retentive control element; X1 is first ac contactor coil; X2 is second ac contactor coil; X3 is the 3rd ac contactor coil; Y1 is the step-down control circuit; D is a single chip computer device; E1 is a control circuit; E2 is a control circuit; F1 is the current sensor of first A.C. contactor; F2 is the current sensor of second A.C. contactor; F3 is the current sensor of the 3rd A.C. contactor; M1 is for measuring the voltage sensor of certain line voltage; M2 is for measuring the voltage sensor of another line voltage; 1 is certain movable contact bridge of one group of bridge contact system mutually; 11 is certain movable contact bridge of another group bridge contact system mutually; 2 is certain moving contact of one group of bridge contact system mutually; 21 is certain moving contact of another group bridge contact system mutually; 3 is contact supporting; 4 is certain fixed contact of one group of bridge contact system mutually; 41 is certain fixed contact of another group bridge contact system mutually; 5 is certain stationary contact bridge of one group of bridge contact system mutually; 51 is certain stationary contact bridge of another group bridge contact system mutually; 6 are moving iron core; 7 is static iron core; 8 is coil; 9 is arc-extinguish chamber; 10 is reaction spring.
Embodiment
Among Fig. 1:
As can be seen from Figure 1, movable contact bridge 1, movable contact bridge 11 and moving contact 2, moving contact 21 is fixed on the contact supporting 3, contact supporting 3 is installed on the moving iron core 6, arc-extinguish chamber 9 covers movable contact bridge 1, movable contact bridge 11, moving contact 2, moving contact 21 and fixed contact 4, fixed contact 41, stationary contact bridge 5, stationary contact bridge 51, the contact system of first A.C. contactor contact arc-extinguishing device C1, only connect disjunction one phase current, the contact system of second A.C. contactor contact arc-extinguishing device C2, only connect another phase current of disjunction, the contact system of the 3rd A.C. contactor contact arc-extinguishing device C3, only connect disjunction third phase electric current, current sensor F1 is enclosed within on the stationary contact bridge 5 of first A.C. contactor contact arc-extinguishing device C1, current sensor F2 is enclosed within on the stationary contact bridge 5 of second A.C. contactor contact arc-extinguishing device C2, and current sensor F3 is enclosed within on the stationary contact bridge 5 of the 3rd A.C. contactor contact arc-extinguishing device C3.
From Fig. 1, Fig. 2 as can be known, monolithic processor control device A controls first A.C. contactor electromagnetic mechanism B1, second A.C. contactor electromagnetic mechanism B2, the 3rd A.C. contactor electromagnetic mechanism B3, the circuit part of monolithic processor control device A, its annexation is that power supply Y is connected to the AC side of rectification circuit Z and the input of step-down control circuit Y1, the DC side of Z is connected to first A.C. contactor master element Z1, second A.C. contactor master element Z2, the 3rd A.C. contactor master element Z3, first A.C. contactor master element Z1 output is connected to first ac contactor coil X1, second A.C. contactor master element Z2 output is connected to second ac contactor coil X2, the 3rd A.C. contactor master element Z3 output is connected to the 3rd ac contactor coil X3, the output of Y1 is connected to first ac contactor coil X1 through first A.C. contactor retentive control element Z11, the output of Y1 is connected to second ac contactor coil X2 through second A.C. contactor retentive control element Z12, the output of Y1 is connected to the 3rd ac contactor coil X3 through the 3rd A.C. contactor retentive control element Z13, the DC side other end of Z respectively with the X1 other end, the X2 other end, the X3 other end, another output of Y1 joins, the input of the delivery outlet 1 connection control circuit E1 of single chip computer device D, the output of E1 is connected to the control end of Z1, another input of the delivery outlet 2 connection control circuit E1 of single chip computer device D, another output of E1 is connected to the control end of Z2, another input of the delivery outlet 3 connection control circuit E1 of single chip computer device D, another output of E1 is connected to the control end of Z3, the input of the delivery outlet 4 connection control circuit E2 of single chip computer device D, the output of E2 is connected to the control end of Z11, another input of the delivery outlet 5 connection control circuit E2 of single chip computer device D, another output of E2 is connected to the control end of Z12, another input of the delivery outlet 6 connection control circuit E2 of single chip computer device D, another output of E2 is connected to the control end of Z13, the output of current sensor F1 is connected to the A/D mouth 1 of D, the output of current sensor F2 is connected to the A/D mouth 2 of D, the output of current sensor F3 is connected to the A/D mouth 3 of D, the A/D mouth 4 of the output order sheet machine D of voltage sensor M1, the A/D mouth 5 of the output order sheet machine D of voltage sensor M2.
When connecting, monolithic processor control device A samples to voltage sensor M signal, and carve in due course and connect first A.C. contactor electromagnetic mechanism B1 coil, the contact system that makes first A.C. contactor contact arc-extinguishing device C1 is in voltage closure during near zero passage, monolithic processor control device A carves in due course and connects second A.C. contactor electromagnetic mechanism B2 coil, the contact system that makes second A.C. contactor contact arc-extinguishing device C2 is in voltage closure during near zero passage, monolithic processor control device A carves in due course and connects the 3rd A.C. contactor electromagnetic mechanism B3 coil, the contact system that makes the 3rd A.C. contactor contact arc-extinguishing device C3 is in voltage closure during near zero passage, when operation, monolithic processor control device A is to voltage sensor M, current sensor F1, current sensor F2, current sensor F3 signal is sampled, when requiring normal disjunction, monolithic processor control device A carves in due course and cuts off first A.C. contactor electromagnetic mechanism B1 coil current, the contact system that makes first A.C. contactor contact arc-extinguishing device C1 is opened during near zero passage at first phase current, the reliable deenergizing of dividing when the first phase current zero passage, monolithic processor control device A carves in due course and cuts off second A.C. contactor electromagnetic mechanism B2 coil current, the contact system that makes second A.C. contactor contact arc-extinguishing device C2 is opened during near zero passage at second phase current, the reliable deenergizing of dividing when the second phase current zero passage, monolithic processor control device A carves in due course and cuts off the 3rd A.C. contactor electromagnetic mechanism B3 coil current, the contact system that makes the 3rd A.C. contactor contact arc-extinguishing device C3 is opened during near zero passage at the third phase electric current, the reliable deenergizing of dividing when the third phase current over-zero, when being short-circuited fault, monolithic processor control device A carries out the short trouble earlier detection, cut off three A.C. contactor electromagnetic mechanism coil currents immediately, the contact system of three A.C. contactor contact arc-extinguishing devices is opened, fast the disjunction short circuit current under strong reaction spring effect rapidly.
The above person of thought, it only is preferred embodiment of the present utility model, but can not limit the scope that the utility model is implemented with this, promptly the simple equivalent of being done according to the utility model claim and utility model description generally changes and modifies, and all still belongs in the scope that the utility model patent contains.Arbitrary embodiment of the present utility model in addition or claim must not reached the disclosed whole purposes of the utility model or advantage or characteristics.
Claims (3)
1. intelligent AC contactor with short circuit breaking capacity, it is characterized in that, described intelligent AC contactor with short circuit breaking capacity comprises: monolithic processor control device, the A.C. contactor electromagnetic mechanism of three platform independent, the A.C. contactor contact arc-extinguishing device of three platform independent; Every corresponding A.C. contactor contact arc-extinguishing device of A.C. contactor electromagnetic mechanism, each A.C. contactor electromagnetic mechanism includes one group of moving iron core, static iron core, coil, reaction spring; Every A.C. contactor contact arc-extinguishing device includes the first movable contact bridge, the second movable contact bridge, first moving contact, second moving contact, first fixed contact, second fixed contact, the first stationary contact bridge and the second stationary contact bridge of two groups of bridge contact systems, a contact supporting, an arc-extinguish chamber; The described first movable contact bridge, the second movable contact bridge and first moving contact, second moving contact are fixed on the contact supporting, and contact supporting is installed on the moving iron core, and every A.C. contactor contact arc-extinguishing device is only connected disjunction one phase current respectively; All be with current sensor on the first stationary contact bridge of every A.C. contactor contact arc-extinguishing device therein.
2. the intelligent AC contactor with short circuit breaking capacity according to claim 1 is characterized in that: every A.C. contactor contact arc-extinguishing device includes two groups of bridge contact systems, and described two groups of bridge contact systems are serial or parallel connections.
3. the intelligent AC contactor with short circuit breaking capacity according to claim 1, it is characterized in that, described monolithic processor control device comprises the circuit with following annexation: a power supply is connected to the AC side of rectification circuit and the input of step-down control circuit, the DC side of this rectification circuit is connected to first A.C. contactor master element, second A.C. contactor master element, the 3rd A.C. contactor master element, described first A.C. contactor master element output is connected to first ac contactor coil, second A.C. contactor master element output is connected to second ac contactor coil, the 3rd A.C. contactor master element output is connected to the 3rd ac contactor coil, the output of described step-down control circuit is connected to first ac contactor coil through first A.C. contactor retentive control element, the output of described step-down control circuit is connected to second ac contactor coil through second A.C. contactor retentive control element, the output of described step-down control circuit is connected to the 3rd ac contactor coil through the 3rd A.C. contactor retentive control element, the DC side other end of described rectification circuit respectively with first ac contactor coil other end, second ac contactor coil other end, the 3rd the ac contactor coil other end, another output of step-down control circuit joins, the input of the first delivery outlet connection control circuit of described single chip computer device, first output of described control circuit is connected to the control end of first A.C. contactor master element, another input of the second delivery outlet connection control circuit of single chip computer device, second output of described control circuit is connected to the control end of second A.C. contactor master element, another input of the 3rd delivery outlet connection control circuit of single chip computer device, the 3rd output of described control circuit is connected to the control end of the 3rd A.C. contactor master element, the input of the 4th delivery outlet connection control circuit of single chip computer device, the 4th output of control circuit is connected to the control end of first A.C. contactor retentive control element, another input of the 5th delivery outlet connection control circuit of single chip computer device, the 5th output of control circuit is connected to the control end of second A.C. contactor retentive control element, another input of the 6th delivery outlet connection control circuit of single chip computer device, another output of control circuit is connected to the control end of the 3rd A.C. contactor retentive control element, the output of first current sensor is connected to an A/D mouth of single chip computer device, the output of second current sensor is connected to the 2nd A/D mouth of single chip computer device, the output of the 3rd current sensor is connected to the 3rd A/D mouth of single chip computer device, the 4th A/D mouth of the output order sheet machine of first voltage sensor, the 5th A/D mouth of the output order sheet machine of second voltage sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201177369U CN202076188U (en) | 2011-04-20 | 2011-04-20 | Intelligent alternating current (AC) contactor with short-circuit breaking capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201177369U CN202076188U (en) | 2011-04-20 | 2011-04-20 | Intelligent alternating current (AC) contactor with short-circuit breaking capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076188U true CN202076188U (en) | 2011-12-14 |
Family
ID=45114278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201177369U Expired - Fee Related CN202076188U (en) | 2011-04-20 | 2011-04-20 | Intelligent alternating current (AC) contactor with short-circuit breaking capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157513A (en) * | 2014-08-25 | 2014-11-19 | 沈阳工业大学 | Novel alternating current contactor and switching-off method thereof |
| CN106696729A (en) * | 2016-11-29 | 2017-05-24 | 北京长城华冠汽车科技股份有限公司 | Battery case-separating continuous driving system of electric automobile and electric automobile |
-
2011
- 2011-04-20 CN CN2011201177369U patent/CN202076188U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157513A (en) * | 2014-08-25 | 2014-11-19 | 沈阳工业大学 | Novel alternating current contactor and switching-off method thereof |
| CN106696729A (en) * | 2016-11-29 | 2017-05-24 | 北京长城华冠汽车科技股份有限公司 | Battery case-separating continuous driving system of electric automobile and electric automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104377816B (en) | A kind of control method of intelligentized reclosing breaker and its automatic reclosing | |
| US8718959B2 (en) | Method and apparatus for high-speed fault detection in distribution systems | |
| CN103545796A (en) | Single-phase grounding fault handling device and method for power distribution network with non-effectively grounded neutral points | |
| CN201984144U (en) | Spot differential coordination tester of portable direct current breaker | |
| CA2744645A1 (en) | Arc fault protection circuit and method | |
| CN209119800U (en) | Bus main protection arc light protecting device in middle-low voltage switch cabinet | |
| CN102751695B (en) | AC contactor main contact adhesion alarm protecting apparatus and method | |
| CN202076188U (en) | Intelligent alternating current (AC) contactor with short-circuit breaking capacity | |
| CN106546913A (en) | A kind of breaker relay protection detector | |
| CN100459012C (en) | Combined type intelligent alternating-current control and protector | |
| CN203826938U (en) | Continuous chemical industry power supply anti-voltage-sage system | |
| CN206759031U (en) | A kind of improved power plant's low-voltage power supply system ground protection warning device | |
| CN208874279U (en) | A kind of improved breaker body unbalanced three-phase lines outlet loop | |
| CN203368013U (en) | Protection device for residual voltage of bus | |
| CN206135427U (en) | Alternate load transfer terminating set based on match of transient state wave form | |
| CN209692335U (en) | A kind of short circuit current limiter intelligent measurement and control unit for insulating monitoring | |
| CN201994647U (en) | Small-current grounding wire selection protection controller | |
| CN105186457B (en) | Motor Protective Device | |
| CN204794328U (en) | Three -phase electricity dual supply automatic switching control equipment | |
| CN204333957U (en) | Power capacitor | |
| CN104242257A (en) | Method and device for realizing synergic protection of units of ring main unit | |
| CN203707761U (en) | 10kV distribution transformer neutral line breaking trip device | |
| CN208548710U (en) | A kind of ZLB current-limiting apparatus based on electric current judgement | |
| CN208539550U (en) | A kind of control device of contactor for preventing adhesion | |
| CN205720406U (en) | A kind of band has point of contact the low-pressure plastic shell circuit breaker of monitoring function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140420 |