CN207114724U - Three-phase synchronous test circuit, device and flame-proof switch testboard - Google Patents
Three-phase synchronous test circuit, device and flame-proof switch testboard Download PDFInfo
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- CN207114724U CN207114724U CN201721111533.2U CN201721111533U CN207114724U CN 207114724 U CN207114724 U CN 207114724U CN 201721111533 U CN201721111533 U CN 201721111533U CN 207114724 U CN207114724 U CN 207114724U
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Abstract
The utility model provides three-phase synchronous test circuit, device and flame-proof switch testboard, is related to circuit field, to alleviate the problem of degree of accuracy is low in the prior art, can improve accuracy in detection.The circuit includes the time relay, SR, timing start button, the first power supply, second source and AC vacuum contactor；The time relay includes the first binding post, the second binding post, the 3rd binding post, the 4th binding post and the 5th binding post, first binding post is connected with SR one end and common port, second binding post and the 3rd binding post connect the first power supply, 4th binding post connects phase terminal, and the 5th binding post is connected with the SR other end；AC vacuum contactor includes magnet coil, auxiliary switch and three vacuum switch tubes, and vacuum switch tube includes one group of main contacts, main contacts one end phase-connecting wire terminal, other end access common port；Magnet coil connects second source；Auxiliary switch is in parallel with timing start button.
Description
Technical field
It the utility model is related to circuit testing technology field, and in particular to a kind of three-phase synchronous test circuit device and explosion-proof
Switch testing platform.
Background technology
Threephase asynchronous starting current is larger, if AC vacuum contactor is asynchronous, can cause phase asynchronous electricity
Because there is instantaneous phase shortage and excessively stream when motivation starts, as frequent starting or the not high motor that may result in of motor quality are burnt out, sternly
Ghost image rings electrical machinery life, the synchronism (synchronism is up to standard within 3ms) of main contact no matter for AC vacuum contactor in itself
Or the life-span of load motor all has a significant impact, increase maintenance cost.
At present, three-phase synchronous test generally use indicator lamp method is tested, and this method is by judging that three-phase circuit is connected
The light and shade time of three identical indicator lamps on loop and degree, if three indicator lamps are simultaneously bright, and brightness is the same, then it is assumed that
Three-phase synchronous, if one is waited brightness slowly poor or bright, then contactor adhesive is asynchronous.The method is to journey
Spending serious contactor can accurately judge, but for the contactor of lesser extent, only go to differentiate with range estimation
The brightness of light or bright speed are relatively difficult.
In summary, there is the problem of degree of accuracy is not high in existing three-phase synchronous detection circuit.
Utility model content
In view of this, the purpose of this utility model is that providing a kind of three-phase synchronous test circuit device and flame-proof switch surveys
Test stand, the not high technical problem of the degree of accuracy be present to alleviate in a manner of indicator lamp method carries out three-phase synchronous detection in the prior art,
The degree of accuracy of three-phase synchronous detection can be improved.
In a first aspect, the utility model embodiment provides a kind of three-phase synchronous test circuit, including：The time relay,
SR, timing start button, the first power supply, second source and AC vacuum contactor；Wherein,
The time relay includes the first binding post, the second binding post, the 3rd binding post, the 4th binding post
With the 5th binding post, wherein, first binding post accesses common port after being connected with one end of the SR, described
Second binding post and the 3rd binding post connect the both ends of the first power supply respectively, and the 4th binding post connects phase line
Terminal, the 5th binding post are connected with the other end of the SR；
The time relay is three tunnels, the 4th binding post of the time relay described in three tunnels with triple line
Each phase terminal connects one by one；
The AC vacuum contactor includes magnet coil, auxiliary switch and three vacuum switch tubes, each vacuum
Switching tube includes one group of main contacts, one end connection phase terminal of the main contacts, described in the other end access of the main contacts
Common port；The both ends of the magnet coil connect the both ends of second source respectively；The auxiliary switch starts with the timing to be pressed
Button is connected in parallel.
With reference in a first aspect, the utility model embodiment provides the first possible embodiment of first aspect, its
In, the time relay includes microcontroller, crystal oscillator and display, the crystal oscillator, display with it is described
Microcontroller is connected.
With reference to the first possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Two kinds of possible embodiments, wherein, the display is light-emitting diode display.
With reference in a first aspect, the utility model embodiment provides the third possible embodiment of first aspect, its
In, the time relay uses the DH48S-1Z time relays.
With reference in a first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect, its
In, first power supply uses alternating current 220V or direct current 24V.
With reference in a first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect, its
In, the second source is using exchange 36V.
With reference in a first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect, its
In, the AC vacuum contactor also includes rectification circuit.
With reference to the 6th kind of possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Seven kinds of possible embodiments, wherein, the three-phase synchronous test circuit also includes filter circuit, the filter circuit with it is described whole
Current circuit is connected.
Second aspect, the utility model embodiment additionally provide a kind of three-phase synchronous test device, including：Isolating transformer
With the three-phase synchronous test circuit any one of first aspect and its possible embodiment；
The isolating transformer is connected with the three-phase synchronous test circuit.
The third aspect, the utility model embodiment, which provides, additionally provides a kind of flame-proof switch testboard, including：A、B、C、
N three-phase and four-lines main circuit and three-phase synchronous test device as claimed in claim 9；
A, B, C, N three-phase and four-line main circuit is connected with the three-phase synchronous test device.
The utility model embodiment brings following beneficial effect：
The three-phase synchronous test circuit that the utility model embodiment provides, including：The time relay, SR, timing
Start button, the first power supply, second source and AC vacuum contactor；Wherein, the time relay includes the first binding post, the
Two binding posts, the 3rd binding post, the 4th binding post and the 5th binding post, first binding post and SR
Common port is accessed after the connection of one end, the second binding post and the 3rd binding post connect the both ends of the first power supply respectively, and the 4th connects
Line terminals connect phase terminal, and the 5th binding post is connected with the other end of SR；The time relay is three tunnels, three tunnels
4th binding post of the time relay is connected one by one with each phase terminal in triple line；AC vacuum contactor includes electricity
Magnetic coil, auxiliary switch and three vacuum switch tubes, each vacuum switch tube include one group of main contacts, one end connection of main contacts
Phase terminal, the other end access common port of main contacts；The both ends of magnet coil connect the both ends of second source respectively；Auxiliary is opened
Pass is connected in parallel with timing start button.Therefore, the technical scheme that the utility model embodiment provides, according to the time relay
The time is shown, being adjusted stroke to the vacuum switch tube of the asynchronous AC vacuum contactor of three-phase makes three-phase synchronous, when passing through
Between display complete the detection of three-phase synchronous, it is convenient directly perceived, and relative to the indicator lamp method of prior art, gone point without range estimation
The brightness of light or the speed of bright light are distinguished, improves the degree of accuracy of three-phase synchronous detection, is advantageous to improve the degree of accuracy, in addition, by
Avoid using multiple indicator lamps in the three-phase synchronous test circuit, reduce annexation, reduce testing cost, make the circuit
The advantages of with simple in construction, fast and easy.
Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram for the three-phase synchronous test circuit that the utility model embodiment one provides；
Fig. 2 is the structured flowchart for the three-phase synchronous test device that the utility model embodiment two provides；
Fig. 3 is the schematic appearance for the flame-proof switch testboard that the utility model embodiment three provides；
Fig. 4 is the circuit diagram of the contact resistance test device in Fig. 3.
Icon：200- isolating transformers；300- three-phase synchronous test circuits；10- casings；20- three-phase synchronous test devices；
30- contact resistance test devices；40- high-current detectors；50- Moving casters.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Apply example, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belong to the scope of the utility model protection.
At present, people usually carry out three-phase synchronous detection using indicator lamp method and have that the degree of accuracy is not high to ask in the prior art
Topic, based on this, a kind of three-phase synchronous test circuit and system that the utility model embodiment provides, it can alleviate existing to alleviate
The not high technical problem of the mode degree of accuracy of three-phase synchronous detection is carried out with the presence of indicator lamp method in technology, it is identical that three can be improved
The degree of accuracy of detection is walked, it is cost-effective.
For ease of understanding the present embodiment, a kind of three-phase synchronous disclosed in the utility model embodiment is surveyed first
Examination circuit describes in detail.
Embodiment one：
The utility model embodiment provides a kind of three-phase synchronous test circuit, available for circuit test field, the three-phase
Synchronism detection circuit, including the time relay, SR, timing start button, the first power supply, second source and AC vacuum
Contactor.
The above-mentioned time relay includes the first binding post, the second binding post, the 3rd binding post, the 4th binding post
With the 5th binding post, wherein, access common port, the second binding post after the connection of one end of the first binding post and SR
Connect the both ends of the first power supply respectively with the 3rd binding post, the 4th binding post connection phase terminal, the 5th binding post with
The other end of SR is connected.
The time relay is three tunnels, the 4th binding post and each phase terminal in triple line of the three road time relays
Connect one by one.
AC vacuum contactor includes magnet coil, auxiliary switch and three vacuum switch tubes, each vacuum switch tube bag
Include one group of main contacts, one end connection phase terminal of main contacts, the other end access common port of main contacts；The both ends of magnet coil
Connect second source；Auxiliary switch is connected in parallel with timing start button.Here auxiliary switch generally refers to aid in normally opened
Contact.
It is further that vacuum switch tube includes upper capping, lower capping, metal bellows and ceramic package, wherein, ceramics
Shell is made corrugated of 95 porcelain insulating materials, and it has creep age distance big, high mechanical strength, heat-resisting and impact-resistant spy
Point.Above-mentioned main contacts includes dynamic/static contact, and contact material uses Cu-W-Wc (copper tungsten tungsten carbide) material of wear-resisting and low value of damming
Material, so under conditions of break performance is met, can reduce the overvoltage caused by damming in interrupting process, improve true
The service life of empty switching tube.Moving contact is driven to do divide-shut brake action when metal bellows is axially moved.
Preferably, the AC vacuum contactor also includes vacuum interrupter, and vacuum interrupter, which has, passes through normal work
Reliable two effects of arc extinguishing when electric current and frequently cut-out operating current.
It is further that the AC vacuum contactor also includes to meet different demands of the user to AC and DC power supply
Rectification circuit, the rectification circuit is used to export direct current, specifically, rectification circuit is bridge rectifier.
Preferably, the three-phase synchronous test circuit can also include filter circuit, filter circuit and rectification
Circuit is connected, and specific filter circuit uses filter capacitor.
It is further that the first power supply uses alternating current 220V or direct current 24V.
As the presently preferred embodiments, second source here is using exchange 36V.
It is further that the time relay includes microcontroller, crystal oscillator and display, the crystal oscillator,
Display is connected with the microcontroller.Wherein, microcontroller is as control element, using High Performance SCM；Crystal shakes
Swing device and be used as clock source；Display is used to intuitively show the time.
Above-mentioned first power supply is connected with microcontroller, and the first power supply is used to provide operating voltage for microcontroller.
Preferably, display is highlighted light-emitting diode display.
For the DH48S-1Z time relays, the DH48S-1Z time relays belong to the time relay that the present embodiment uses
The on-delay type time relay, suitable for the control of 47~63Hz of exchange, below operating voltage 265V or operating voltage 12V, 24V
Make delay cell in circuit processed, the reference time delay of the time relay is 0.01s-99h99m, and the behalf second, h represents hour, m generations
Table minute.
Reference picture 1, below with the three road DH48S-1Z time relays (being represented in Fig. 1 with DH1, DH2, DH3), the first power supply
It is that exchange 36V illustrates to the present embodiment for alternating current 220V, second source.
Pin 1 per DH all the way connects as the first binding post, pin 2 as the second binding post, pin 7 as the 3rd
Line terminals, pin 4 are used as the 5th binding post as the 4th binding post, pin 3, wherein, the one of pin 1 and SR FW
Common port abc is accessed after the connection of end, pin 2 connects the first power supply AC220V N lines (zero line), and pin 7 connects the first power supply
AC220V L lines (live wire), pin 4 connect phase terminal, and pin 3 is connected with the SR FW other end.Specifically,
The pin 4 that DH1 pin 4 connects phase terminal a, DH2 the connection phase terminal of pin 4 b, DH3 connects phase terminal c.
Before test, the friendship of magnet coil, auxiliary switch (or referred to as normally opened contact) and three vacuum switch tubes will be included
Flow vacuum contactor KW is accessed, wherein, each vacuum switch tube includes one group of main contacts (upper and lower terminal), one end of main contacts
Connect phase terminal, the other end access common port of main contacts；Magnet coil KW ends A, B connection second sources AC36V, three
Three groups of main contacts of individual vacuum switch tube are respectively A1A2, B1B2, C1C2, specifically, three couples of masters by AC vacuum contactor
One end A1, B1, C1 of contact are connected with three time relays DH1, DH2, DH3 pause terminal (i.e. pin 4) are followed by respectively
Onto phase terminal a, b, c, by the other end A2, B2, C2 short circuit of three pairs of main contacts and it is connected on common port abc, three tunnels is set
The delay time (count down time) of the time relay is identical, and by the auxiliary switch (not shown) of AC vacuum contactor
It is connected in parallel with timing start button (not shown).During test, timing start button, vacuum communication to be measured contact are pressed
Device obtains electric, three pairs of main contacts adhesives, suspends its corresponding time relay, realizes the timing to a, b, c three-phase, pass through reading
Whether the time for taking the display of the time relay to show has deviation, and the deviation characterizes three pairs of main contacts and inhaled with during
The asynchronous time.When need to repeat to test, it can first press after SR FW resetted, repeat above-mentioned testing procedure, with
Reduce error amount, improve the degree of accuracy of result.If during pause, there is deviation the time that the three road time relays are shown, then says
Bright three-phase is asynchronous, then needs to adjust AC vacuum contactor adjusting nut, adjust moving contact initial position, then is tested,
Until time relay time showing is consistent, so as to improve, ensure A.C. contactor three-phase synchronous.
The three-phase synchronous test circuit that the utility model embodiment provides, including：The three of the utility model embodiment offer
Be synchronised test circuit, including：The time relay, SR, timing start button, the first power supply, second source and exchange
Vacuum contactor；Wherein, the time relay includes the first binding post, the second binding post, the 3rd binding post, the 4th wiring
Common port, the second terminals are accessed after one end connection of terminal and the 5th binding post, first binding post and SR
Son and the 3rd binding post connect the both ends of the first power supply, the 4th binding post connection phase terminal, the 5th binding post respectively
It is connected with the other end of SR；The time relay is three tunnels, the 4th binding post and three-phase of the three road time relays
Each phase terminal in line connects one by one；AC vacuum contactor includes magnet coil, auxiliary switch and three vacuum switches
Pipe, each vacuum switch tube include one group of main contacts, one end connection phase terminal of main contacts, the other end access public affairs of main contacts
End altogether；The both ends of magnet coil connect the both ends of second source respectively；Auxiliary switch is connected in parallel with timing start button.Cause
This, the technical scheme that the utility model embodiment provides, according to the display time of the time relay, exchange asynchronous to three-phase is true
The vacuum switch tube of empty contactor, which is adjusted stroke, makes three-phase synchronous, and passage time is shown to complete the detection of three-phase synchronous,
It is convenient directly perceived, and relative to the indicator lamp method of prior art, go to differentiate the brightness of light or the speed of bright light without range estimation, change
It has been apt to the degree of accuracy of three-phase synchronous detection, has been advantageous to improve the degree of accuracy, further, since the three-phase synchronous test circuit avoids using
Multiple indicator lamps, reduce annexation, reduce testing cost, the circuit is had the advantages of simple in construction, fast and easy.
To sum up, the three-phase synchronous test circuit becomes path according to three-line during AC vacuum contactor adhesive by opening a way
The pause action of this feature and the time relay by make relay suspend terminal by it is normally opened become normally closed electrical characteristic come
Realize.By being disconnected to closure come control time relay after being closed a floodgate by using three vacuum switch tubes of AC vacuum contactor
Pause is realized carries out timing to each vacuum switch tube closing time.
Embodiment two：
As shown in Fig. 2 the utility model embodiment provides a kind of three-phase synchronous test device, led available for circuit test
Domain, the three-phase synchronous test device, including：The three-phase synchronous test circuit referred in isolating transformer 200 and embodiment one
300。
Isolating transformer 200 is connected with three-phase synchronous test circuit 300.
Here isolating transformer 200 is as isolation maintenance power supply or test power, it is ensured that three-phase synchronous is examined
Slowdown monitoring circuit carry out adhesive lock experiment security, specifically, the secondary side of the isolating transformer can export 12V, 24V, 36V,
The voltages such as 127V, 140V, it is then three in use, the first power supply or second source to be accessed to the secondary side of isolating transformer
Phase synchronization detecting circuit 500 provides power supply.
Embodiment three：
As shown in figure 3, the utility model embodiment also provides a kind of flame-proof switch testboard, including：A, B, C, N three-phase four
The three-phase synchronous test device 20 being related in line main circuit and above-described embodiment two；A, B, C, N three-phase and four-line main circuit pass through certainly
Dynamic air-break (being also known as air switch either automatic switch) or fuse are connected with three-phase synchronous test device, from
Dynamic air-break (being also known as air switch either automatic switch) or fuse are used for short circuit, overload, o-volt protection.
Specifically, the flame-proof switch testboard includes casing 10, casing 10 is L-shaped, the above-mentioned main electricity of A, B, C, N three-phase and four-line
Road and three-phase synchronous circuit are arranged on inside casing 10, three-phase synchronous test device 20 is arranged on the top of casing 10, i.e. L portions
At " I " portion.
It is further that the flame-proof switch testboard can also include contact resistance test device 30, contact resistance test
Device 30 is arranged on the right side of three-phase synchronous test device 20.
Fig. 4 shows the circuit diagram of contact resistance test device, the contact resistance test device 30 include variable inductance L,
Transformer B, rectifier BR2, ammeter A and voltmeter V, variable inductance L first end and the L lines of the first power supply (AC220V) connect
Connect, the first end of variable inductance L the second end simultaneously with the N lines of first switch power supply and transformer B primary coil is connected, can
The sliding end for becoming inductance L is connected with the second end of transformer B primary coils, the first end of transformer B secondary coils (secondary side)
It is connected with rectifier BR2 first input end, the second end of transformer B secondary coils connects with rectifier BR2 the second input
Connect, rectifier BR2 positive pole is connected with ammeter A positive pole, ammeter A negative pole simultaneously with voltmeter V positive pole and to be measured
Contact resistance RXA the first test lead connection, voltmeter V negative pole the second test with rectifier BR2 negative pole and RXA simultaneously
End connection.
It is further that the flame-proof switch testboard can also include high-current detector 40.The high-current test fills
The lower end for being arranged on three-phase synchronous test device 20 is put, and at the "-" portion in the L portions of casing 10.
In view of the volume and weight problem of flame-proof switch testboard, in order to save strength, it is moved easily, the present embodiment carries
The bottom of the flame-proof switch testboard of confession is provided with the support meanss of Tape movement castor 50, and the specific Moving caster is universal
Wheel.
The three-phase synchronous test device of the utility model embodiment offer, flame-proof switch testboard, are carried with above-described embodiment
The three-phase synchronous test circuit of confession has identical technical characteristic, so can also solve identical technical problem, reaches identical
Technique effect.
Similar label and letter represents similar terms in following accompanying drawing, therefore, once in a certain Xiang Yi accompanying drawing
It is defined, then it further need not be defined and explained in subsequent accompanying drawing.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with
Realize by another way.Device embodiment described above is only schematical, for example, the division of the unit,
Only a kind of division of logic function, can there is other dividing mode when actually realizing, in another example, multiple units or component can
To combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or beg for
The mutual coupling of opinion or direct-coupling or communication connection can be by some communication interfaces, device or unit it is indirect
Coupling or communication connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit,
Can be that unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in the executable non-volatile computer read/write memory medium of a processor.Based on such understanding, this practicality
The part or the part of the technical scheme that new technical scheme substantially contributes to prior art in other words can be with
The form of software product is embodied, and the computer software product is stored in a storage medium, including some instructions to
So that computer equipment (can be personal computer, server, or network equipment an etc.) execution the utility model is each
The all or part of step of embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage
(ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD
Etc. it is various can be with the medium of store program codes.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical scheme of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to foregoing
The utility model is described in detail embodiment, it will be understood by those within the art that：It is any to be familiar with this skill
For the technical staff in art field in the technical scope that the utility model discloses, it still can be to the skill described in previous embodiment
Art scheme is modified or can readily occurred in change, or carries out equivalent substitution to which part technical characteristic；And these modifications,
Change is replaced, and the essence of appropriate technical solution is departed from the spirit and model of the utility model embodiment technical scheme
Enclose, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model described should be wanted with right
The protection domain asked is defined.
Claims (10)
- A kind of 1. three-phase synchronous test circuit, it is characterised in that including：The time relay, SR, timing start button, First power supply, second source and AC vacuum contactor；Wherein,The time relay includes the first binding post, the second binding post, the 3rd binding post, the 4th binding post and the Five binding posts, wherein, first binding post accesses common port after being connected with one end of the SR, and described second Binding post and the 3rd binding post connect the both ends of the first power supply respectively, and the 4th binding post connects phase line end Son, the 5th binding post are connected with the other end of the SR；The time relay is three tunnels, the 4th binding post of the time relay described in three tunnels with it is each in triple line Phase terminal connects one by one；The AC vacuum contactor includes magnet coil, auxiliary switch and three vacuum switch tubes, each vacuum switch Pipe includes one group of main contacts, and one end of the main contacts connects phase terminal, and the other end access of the main contacts is described public End；The both ends of the magnet coil connect the both ends of second source respectively；The auxiliary switch and the timing start button are simultaneously Connection connection.
- 2. three-phase synchronous test circuit according to claim 1, it is characterised in that the time relay includes microcontroller Device, crystal oscillator and display, the crystal oscillator, display are connected with the microcontroller.
- 3. three-phase synchronous test circuit according to claim 2, it is characterised in that the display is light-emitting diode display.
- 4. three-phase synchronous test circuit according to claim 1, it is characterised in that the time relay uses DH48S- The 1Z time relays.
- 5. three-phase synchronous test circuit according to claim 1, it is characterised in that first power supply uses alternating current 220V Or direct current 24V.
- 6. three-phase synchronous test circuit according to claim 1, it is characterised in that the second source is using exchange 36V.
- 7. three-phase synchronous test circuit according to claim 1, it is characterised in that the AC vacuum contactor also includes Rectification circuit.
- 8. three-phase synchronous test circuit according to claim 7, it is characterised in that also including filter circuit, the filtering Circuit is connected with the rectification circuit.
- A kind of 9. three-phase synchronous test device, it is characterised in that including：Isolating transformer and such as any one of claim 1-8 institutes The three-phase synchronous test circuit stated；The isolating transformer is connected with the three-phase synchronous test circuit.
- A kind of 10. flame-proof switch testboard, it is characterised in that including：A, B, C, N three-phase and four-line main circuit and such as claim Three-phase synchronous test device described in 9；A, B, C, N three-phase and four-line main circuit is connected with the three-phase synchronous test device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721111533.2U CN207114724U (en) | 2017-08-31 | 2017-08-31 | Three-phase synchronous test circuit, device and flame-proof switch testboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721111533.2U CN207114724U (en) | 2017-08-31 | 2017-08-31 | Three-phase synchronous test circuit, device and flame-proof switch testboard |
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| CN207114724U true CN207114724U (en) | 2018-03-16 |
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| CN201721111533.2U Expired - Fee Related CN207114724U (en) | 2017-08-31 | 2017-08-31 | Three-phase synchronous test circuit, device and flame-proof switch testboard |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803253A (en) * | 2018-08-09 | 2018-11-13 | 合肥芯碁微电子装备有限公司 | A kind of heavy-current control switching circuit for UVLED exposure machines |
| CN110794296A (en) * | 2019-11-14 | 2020-02-14 | 兖州煤业股份有限公司 | Synchronous testing device for three-phase contactor |
| WO2021082906A1 (en) * | 2020-06-01 | 2021-05-06 | 龚柱 | Method for measuring synchronicity of contacts of two-power supply transfer switch and apparatus for same |
-
2017
- 2017-08-31 CN CN201721111533.2U patent/CN207114724U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108803253A (en) * | 2018-08-09 | 2018-11-13 | 合肥芯碁微电子装备有限公司 | A kind of heavy-current control switching circuit for UVLED exposure machines |
| CN110794296A (en) * | 2019-11-14 | 2020-02-14 | 兖州煤业股份有限公司 | Synchronous testing device for three-phase contactor |
| WO2021082906A1 (en) * | 2020-06-01 | 2021-05-06 | 龚柱 | Method for measuring synchronicity of contacts of two-power supply transfer switch and apparatus for same |
| CN113196071A (en) * | 2020-06-01 | 2021-07-30 | 龚柱 | Method and device for detecting synchronism of contacts of dual-power transfer switch |
| GB2599869A (en) * | 2020-06-01 | 2022-04-13 | Quanzhou Ruilang Mechanical & Electrical Tech Co Ltd | Method for measuring synchronicity of contacts of two-power supply transfer switch and apparatus for same |
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