CN205304389U - Automatic change -over electrical apparatus of taking independent source of power selects electric installation - Google Patents
Automatic change -over electrical apparatus of taking independent source of power selects electric installation Download PDFInfo
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- CN205304389U CN205304389U CN201521100389.3U CN201521100389U CN205304389U CN 205304389 U CN205304389 U CN 205304389U CN 201521100389 U CN201521100389 U CN 201521100389U CN 205304389 U CN205304389 U CN 205304389U
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- catalyst
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- closed contact
- interlock circuit
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Abstract
The utility model provides an automatic change -over electrical apparatus of taking independent source of power selects electric installation, including switching signal interlock circuit and electric operating mechanism interlock circuit, electric operating mechanism interlock circuit is introduced with the electric energy of three power respectively to three contactor, has switching signal interlock circuit between the three contactor, electric operating mechanism interlock circuit includes the execution switch of three interlocking. The third power, through contactor and first, second source interlocking, and the control of third power accessible direct current, the reliability is high, three execution switch is under arbitrary state, and at most only the parallelly connected risk of two way alternating current power supply has been avoided to two switch closures, distributed arranging makes the device have enough big creepage distance and a clearance, the disconnect -type contactor can rely on mounting screw screw hole or buckle card on the draw -in groove, increased application scope, and specified impulse withstand voltage grade is high.
Description
Technical field
This utility model belongs to automatic transfer switching electric appliance field, especially relates to a kind of automatic transfer switching electric appliance with independent current source and selects electric installation.
Background technology
Along with the development of distribution technique, people are more and more higher to the requirement of power supply reliability, thus expediting the emergence of out automatic transfer switching electric appliance. Owing to automatic transfer switching electric appliance is often the last line of defense in distribution system, so the requirement to it is also that comparison is high.
The choosing electricity of automatic transfer switching electric appliance on the market, interlock are substantially made up of electronic relay, and are often accomplished that selection and the switching of double loop power supply at present. If by the character of alternating current it is known that two-way power supply be unsatisfactory for voltage, frequency, phase place, phase sequence all consistent when in parallel by force, gently then there is phase fault transformator demolition, heavy then occurrence of large-area power outage. And along with the development of electrical technology, in first order load place, often require that device for switching device can when alternating current power supply goes wrong, standby DC source can be had to substitute be operated, thus when two-way power supply all breaks down, still ensuring that the unimpeded of main circuit, improve reliability.
Summary of the invention
In view of this, this utility model is directed to a kind of automatic transfer switching electric appliance with independent current source and selects electric installation, prevents the situation that multiple power supplies mistake is in parallel on the one hand, provides No. threeth stand-by power supply on the other hand, improves the reliability of circuit. For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
A kind of automatic transfer switching electric appliance with independent current source selects electric installation, including switching signal interlock circuit and motor-operating mechanism interlock circuit;
Described switching signal interlock circuit includes the first catalyst, the second catalyst, the 3rd catalyst and relay; First catalyst is located between A, C phase of the first power supply, and the coil of the first catalyst and the normally-closed contact of the second catalyst are connected between DC power anode and the first switching signal; Second catalyst is located between A, C phase of second source, and the coil of the second catalyst and the normally-closed contact of the first catalyst are connected between DC power anode and the second switching signal; 3rd catalyst is located between A, C phase of the 3rd power supply, and the coil of the 3rd catalyst and the normally-closed contact of relay are connected between DC power anode and the 3rd switching signal; After the normally opened contact of the first catalyst and the normally opened contact parallel connection of the second catalyst and the coils connected in series of relay between the both positive and negative polarity of DC source;
The A phase of described first power supply, second source and the 3rd power supply is connected by A phase line, and the C phase of described first power supply, second source and the 3rd power supply is connected by C phase line;
Motor-operating mechanism interlock circuit includes first performing switch, second performing switch and the 3rd perform switch; Second the second normally-closed contact performing switch and the 3rd performs after the second normally-closed contact parallel connection switched and the coils connected in series of the first execution switch is between described A phase line and C phase line; First the first normally-closed contact performing switch and the 3rd performs after the first normally-closed contact parallel connection switched and the coils connected in series of the second execution switch is between described A phase line and C phase line; First the second normally-closed contact performing switch and second performs after the first normally-closed contact parallel connection switched and the coils connected in series of the 3rd execution switch is between described A phase line and C phase line.
Further, described first catalyst, the second catalyst and the 3rd catalyst are attached separately to the different both sides performing chopper.
Further, the withstanding voltage of described first catalyst, the second catalyst and the 3rd catalyst is more than 12kV.
Further, described direct current power source voltage is 24V.
Relative to prior art, a kind of automatic transfer switching electric appliance with independent current source described in the utility model selects electric installation to have the advantage that, and switching signal interlock circuit has the 3rd power supply, by catalyst and first, second power interlock, and the 3rd power supply can be controlled by unidirectional current, reliability is high; Three perform switch under free position, at most only two switch Guan Bis, it is to avoid the risk that two-way alternating current power supply is in parallel; Distributed layout makes device have sufficiently large creep age distance and electric clearance, and screw can be relied on to be arranged on screw hole for separate type catalyst or buckle is stuck on draw-in groove, adds the scope of application, and rated impulse withstanding voltage grade is high.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model. In the accompanying drawings:
Fig. 1 is circuit diagram of the present utility model;
Fig. 2 is schematic diagram of the present utility model;
Fig. 3 is control circuit theory figure of the present utility model;
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in this utility model and the feature in embodiment can be mutually combined.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second " etc. are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic. Thus, the feature defining " first ", " second " etc. can express or implicitly include one or more these features. In description of the present utility model, except as otherwise noted, " multiple " are meant that two or more.
In description of the present utility model, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly; Can be mechanically connected, it is also possible to be electrical connection; Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals. For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in this utility model by concrete condition.
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As it is shown in figure 1, major loop of the present utility model is switched tri-execution switches of A3 formed by the first execution switch A1, the second execution switch A2, the 3rd execution.
As in figure 2 it is shown, this utility model includes switching signal interlock circuit and motor-operating mechanism interlock circuit; The electric energy of the first power supply, second source and the 3rd power supply can be incorporated into respectively motor-operating mechanism interlock circuit by first catalyst Z1 the second catalyst Z2 and the three catalyst Z3, but owing to the risk of above-mentioned parallel operation needs to introduce switching signal interlock circuit between the first catalyst Z1 and the second catalyst Z2, between the first catalyst Z1 and the 3rd catalyst Z3, between the second catalyst Z2 and the 3rd catalyst Z3.
As it is shown on figure 3, switching signal interlock circuit includes the first catalyst Z1, the second catalyst Z2, the 3rd catalyst Z3 and relay U1; First catalyst Z1 is located between A, C phase of the first power supply, and the normally-closed contact Z2-b1 of the coil Z1L and the second catalyst Z2 of the first catalyst Z1 is connected between DC power anode and the first switching signal; Second catalyst Z2 is located between A, C phase of second source, and the normally-closed contact Z1-b1 of the coil Z2L and the first catalyst Z1 of the second catalyst Z2 is connected between DC power anode and the second switching signal; 3rd catalyst Z3 is located between A, C phase of the 3rd power supply, and the normally-closed contact U1-b1 of the coil Z3L and relay U1 of the 3rd catalyst Z3 is connected between DC power anode and the 3rd switching signal; After the normally opened contact Z2-b2 parallel connection of the normally opened contact Z1-b2 and the second catalyst Z2 of the first catalyst Z1 and the coil U1L of relay U1 be connected between the both positive and negative polarity of DC source;
The A phase of the first power supply, second source and the 3rd power supply is connected by A phase line J4, and the C phase of the first power supply, second source and the 3rd power supply is connected by C phase line J3;
Motor-operating mechanism interlock circuit includes the first execution switch A1, the second execution switch A2 and the three performs switch A3; Second performs after the switch second normally-closed contact A2-b2 of A2 and the 3rd performs the second normally-closed contact A3-b2 parallel connection of switch A3 and the first loop A 1L performing switch A1 is connected between A phase line J4 and C phase line J3; First performs after the switch first normally-closed contact A1-b1 of A1 and the 3rd performs the first normally-closed contact A3-b1 parallel connection of switch A3 and the second loop A 2L performing switch A2 is connected between A phase line J4 and C phase line J3;It is connected between A phase line J4 and C phase line J3 with the 3rd loop A 3L performing switch A3 after the first normally-closed contact A2-b1 parallel connection of the first the second normally-closed contact A1-b2 and second execution switch A2 performing switch A1.
First catalyst Z1, the second catalyst Z2 and the three catalyst Z3 are attached separately to the different both sides performing chopper.
First catalyst Z1, the second catalyst Z2 and the three catalyst Z3 withstanding voltage more than 12kV.
Direct current power source voltage is 24V.
Working method of the present utility model is as follows:
When the first switching signal is set low by controller, when sending action command, if the second catalyst Z2 normally-closed contact Z2-b1 Guan Bi, first switching signal and 24V voltage can make the coil Z1L of the first catalyst Z1 obtain electric, first catalyst Z1 Guan Bi, then the A phase of the first power supply, C phase power supply signal just can send into motor-operating mechanism interlock circuit. Again because the original state of catalyst is normally open, and the original state of normally-closed contact is normally off, can reverse along with the change of the state of catalyst with the state of normally-closed contact series coil; So when the first catalyst Z1 Guan Bi time, the second catalyst Z2 normally-closed contact Z2-b1 must be closure state, then the second catalyst Z2 must be normally open.
When the 3rd switching signal is set low by controller, when sending action command, if relay normally-closed contact Guan Bi U1-b1,3rd switching signal and 24V can make the coil Z3L of the 3rd catalyst obtain electric, 3rd catalyst Z3 Guan Bi, then the A phase of the 3rd power supply, C phase power supply signal just can send into motor-operating mechanism interlock circuit. If the first catalyst Z1, the second catalyst Z2 have one by adhesive, then relay coil U1L will adhesive, then the coil Z3L of the 3rd catalyst cannot by adhesive.
So, system all can transmit electrical power to motor-operating mechanism interlock circuit at any time.
When first performs switch A1 needs combined floodgate time, A phase line J4 will perform switch closing coil A1L by first and enter into the second execution and switch the second normally-closed contact A2-b2 or the 3rd and perform the input side of switch the second normally-closed contact A3-b2, if now second performing switch A2 or the 3rd and perform have one to be in disjunction state in switch A3, second performs switch the second normally-closed contact A2-b2 and the three performs to switch in the second normally-closed contact A3-b2 and necessarily have to be in a closure state. Then will perform switch closing coil A1L both sides superposition A phase and C phase voltage first, perform feed motion in being carried out switch A1.
If by above-mentioned workflow it is known that the first execution switch A1 can close a floodgate, then the second execution switch A2 or the 3rd performs to switch in A3 and has to be in a disjunction state. So being appreciated that execution switch A1, A2, A3 are under free position, at most only two switch Guan Bis, thus avoiding the risk that two-way alternating current power supply is in parallel; Switching signal interlock circuit has the 3rd power supply, and first, second power interlock, and the 3rd power supply can be controlled by unidirectional current, and reliability is high.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (4)
1. the automatic transfer switching electric appliance with independent current source selects electric installation, it is characterised in that: include switching signal interlock circuit and motor-operating mechanism interlock circuit;
Described switching signal interlock circuit includes the first catalyst (Z1), the second catalyst (Z2), the 3rd catalyst (Z3) and relay (U1);First catalyst (Z1) is located between A, C phase of the first power supply, and the coil (Z1L) of the first catalyst (Z1) and the normally-closed contact (Z2-b1) of the second catalyst (Z2) are connected between DC power anode and the first switching signal; Second catalyst (Z2) is located between A, C phase of second source, and the coil (Z2L) of the second catalyst (Z2) and the normally-closed contact (Z1-b1) of the first catalyst (Z1) are connected between DC power anode and the second switching signal; 3rd catalyst (Z3) is located between A, C phase of the 3rd power supply, and the coil (Z3L) of the 3rd catalyst (Z3) and the normally-closed contact (U1-b1) of relay (U1) are connected between DC power anode and the 3rd switching signal; After the normally opened contact (Z1-b2) of the first catalyst (Z1) and normally opened contact (Z2-b2) parallel connection of the second catalyst (Z2) and the coil (U1L) of relay (U1) be connected between the both positive and negative polarity of DC source;
The A phase of described first power supply, second source and the 3rd power supply is connected by A phase line (J4), and the C phase of described first power supply, second source and the 3rd power supply is connected by C phase line (J3);
Motor-operating mechanism interlock circuit includes first performing switch (A1), second performing switch (A2) and the 3rd and perform switch (A3); After second the second normally-closed contact (A2-b2) and the 3rd performing switch (A2) performs the second normally-closed contact (A3-b2) parallel connection of switch (A3) and the first coil (A1L) performing switch (A1) be connected between described A phase line (J4) and C phase line (J3); After first the first normally-closed contact (A1-b1) and the 3rd performing switch (A1) performs the first normally-closed contact (A3-b1) parallel connection of switch (A3) and the second coil (A2L) performing switch (A2) be connected between described A phase line (J4) and C phase line (J3); It is connected between described A phase line (J4) and C phase line (J3) with the 3rd coil (A3L) performing switch (A3) after first the second normally-closed contact (A1-b2) and second performing switch (A1) performs the first normally-closed contact (A2-b1) parallel connection of switch (A2).
2. a kind of automatic transfer switching electric appliance with independent current source according to claim 1 selects electric installation, it is characterised in that: described first catalyst (Z1), the second catalyst (Z2) and the 3rd catalyst (Z3) are attached separately to the different both sides performing chopper.
3. a kind of automatic transfer switching electric appliance with independent current source according to claim 1 and 2 selects electric installation, it is characterised in that: the withstanding voltage of described first catalyst (Z1), the second catalyst (Z2) and the 3rd catalyst (Z3) is more than 12kV.
4. a kind of automatic transfer switching electric appliance with independent current source according to claim 1 and 2 selects electric installation, it is characterised in that: described direct current power source voltage is 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521100389.3U CN205304389U (en) | 2015-12-25 | 2015-12-25 | Automatic change -over electrical apparatus of taking independent source of power selects electric installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521100389.3U CN205304389U (en) | 2015-12-25 | 2015-12-25 | Automatic change -over electrical apparatus of taking independent source of power selects electric installation |
Publications (1)
| Publication Number | Publication Date |
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| CN205304389U true CN205304389U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521100389.3U Active CN205304389U (en) | 2015-12-25 | 2015-12-25 | Automatic change -over electrical apparatus of taking independent source of power selects electric installation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462250A (en) * | 2018-01-31 | 2018-08-28 | 株洲中车时代电气股份有限公司 | A kind of more power supplys for crossing split-phase electronic switch take can circuit |
| CN110247472A (en) * | 2019-07-17 | 2019-09-17 | 珠海格力电器股份有限公司 | Power supply unit, method and its equipment |
-
2015
- 2015-12-25 CN CN201521100389.3U patent/CN205304389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462250A (en) * | 2018-01-31 | 2018-08-28 | 株洲中车时代电气股份有限公司 | A kind of more power supplys for crossing split-phase electronic switch take can circuit |
| CN110247472A (en) * | 2019-07-17 | 2019-09-17 | 珠海格力电器股份有限公司 | Power supply unit, method and its equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |