CN207381982U - It is a kind of to realize the threephase load switching device with alternate blocking function with two switches - Google Patents
It is a kind of to realize the threephase load switching device with alternate blocking function with two switches Download PDFInfo
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- CN207381982U CN207381982U CN201720885194.7U CN201720885194U CN207381982U CN 207381982 U CN207381982 U CN 207381982U CN 201720885194 U CN201720885194 U CN 201720885194U CN 207381982 U CN207381982 U CN 207381982U
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Abstract
The utility model discloses a kind of single-phase load compared with the switching device of three phase supply in power grid, the characteristics of maximum, is, switch one and switch two are attached and are fixed by copper connector, connecting rod and housing connection member, then are equipped with corresponding inlet wire and the connector of outlet, constitute this device；By controlling the dynamical element two on the dynamical element one on switch one and switch two, so that dynamical element one drives moving contact group one, dynamical element two that moving contact group two is driven to be attracted and separate with static contact group respectively, three phase supply is connected and disconnected from composition load and power grid；And moving contact, under the action of connecting rod, a phase and load conduction can only be had by being always ensured that in A, B, C three-phase；For the utility model when realizing alternate locking and load switching, method is simple, reliable.
Description
Technical field
The utility model is related to Low Voltage Electrical Apparatus, and in particular to the switching device of three phase supply and single-phase load.
Background technology
There is substantial amounts of single-phase, asymmetric, non-linear, impact load, three-phase load systems in low-voltage network system
System changes at random, these loads can make distribution system generate three-phase imbalance, three-phase load unbalance cause transformer and
The electric energy loss of circuit and electrical equipment increases, and then increases line loss, reduces power supply reliability, can cause to become when serious
Depressor, circuit and equipment burnout, the Electrical Safety of serious threat power grid.
At present, solve the problems, such as that three-phase imbalance is mainly the following scheme：First, artificial offline Load adjustment phase sequence, reaches
To three-phase equilibrium, shortcoming is to adjust in real time；Second is that it is adjusted in distribution transformer low-pressure side by alternate Reactive Compensation Mode
Three-phase load unbalance, shortcoming are cannot to solve the problems, such as the three-phase load unbalance of power distribution station low voltage three-phase circuit；Third,
Low-voltage distribution network user terminal installs the automatic commutation device of three-phase load unbalance additional, and device monitors the load condition of circuit in real time, finds
Load sends switching command automatically when seriously uneven, makes three-phase line load autobalance, and the real-time adjustment effect of this mode is good,
It is efficient.
May 14 2014 month day for announcing, it is automatic that the patent of notification number CN 103795076A discloses a kind of three-phase load
Balancer and its commutation device, it can realize the automatic commutation not powered off under the control of control module, by three commutation circuits
Compose in parallel, each commutation circuit be a pair of silicon-controlled inverse parallel after, it is in parallel with magnetic latching relay.Each commutation circuit is connected on
In the correspondence phase line of three phase supply circuit, control module control commutation device, the two forms three-phase load autobalance.
The program is disadvantageous in that：First, the program does not have mechanical locking device, can occur in commutation process
The situation of short circuit；Secondly, it is necessary to realize commutation process using 3 commutation circuits, form complex.
The day for announcing is on 03 06th, 2013, and notification number is that the Chinese patent of CN 101854062B discloses " a kind of load
The method of automatic three-phase switching " sets a switching switch between three phase mains and single-phase load, if there are three it is mutually independent,
Single-phase switch with interlock；Its power input is correspondingly connected with respectively at three phase lines of three phase mains, and three single-phase
The power output end of the switch power output end in parallel for forming switching switch；Three single-phase switch, in mutual interlocking gear or interlocking work(
Under the interlocking effect of energy circuit, only it can be closed/connect there are one single-phase switch, obtain single phase poaer supply and be connected with single-phase load；
Need carry out three-phase power line between load adjusting/equilibrium when, by detected each phase supply line load current
Size determines the phase line all the way of phase current minimum；Opening/disconnection certain single-phase switch all the way in closure/on-state originally,
Single-phase switch of the closure/connection corresponding to the phase line of phase current minimum makes load be transferred to by the phase line where original another
Phase line carries out single phase power supply, realizes instant adjust automatically line load.
The program is disadvantageous in that：First, the program has used 3 individual event switches that could realize commutation, forms knot
Structure is complicated；Secondly, the program is in commutation, it is necessary to heavy duty that phase first be controlled to disconnect, could control that gently load
One is conducted, and realizes that commutation process is complex；In addition, the program needs three single-phase switch, cost is higher.
The above-mentioned phase change method using three independent switches, the commutation with utilizing two switches used by the utility model
Method, it is entirely different in principle.
The content of the invention
The utility model realizes the switching action between load and three-phase electricity using two switches individually controlled.It solves
Existing phase fault problem during commutation, and make switching action simpler, switching time is shorter, more compact structure, and cost is lower.
To achieve the above object, the utility model uses following scheme：
It is a kind of with two switch realize the threephase load switching devices with alternate blocking function, including switch one, switch two,
Static contact connector, connecting rod；The switch one is set with two axial symmetry of switch；The switch one includes dynamical element one, stationary contact
Head group one, static contact group two, moving contact group one, one shell of switch, dynamical element one are connected with moving contact group one, static contact group
One is respectively arranged at the left side and right side of moving contact group one with static contact group two；The switch two includes dynamical element two, stationary contact
Head group three, static contact group four, moving contact group two, two shells of switch, dynamical element two are connected with moving contact group two, static contact group
Three are respectively arranged at the left side and right side of moving contact group two with static contact group four；The moving contact group one and moving contact group two pass through
Connecting rod is connected but is not turned on；The static contact group one, static contact group two, static contact group three, static contact group four are not led from each other
It is logical, static contact group two is connected with static contact group three by static contact connector when forming load switching device；It is described to open
Close one and switch two, fixed by housing connection member, then be equipped with A be connected fitting, B be connected fitting, C be connected fitting, load
End connection.
Further, moving contact group one and when attracted static contact group one, then disconnect with static contact group two, moving contact group one
With static contact group two it is attracted when then disconnected with static contact group one；When moving contact group two and static contact group three are attracted then with stationary contact
Head group four disconnects, and when moving contact group two and attracted static contact group four then disconnects with static contact group three；Under the action of connecting rod, move
Then moving contact group two is disconnected with static contact group four when sets of contacts one is attracted with static contact group one, moving contact group two and static contact group four
Then moving contact group one is disconnected with static contact group one during actuation, realizes the alternate locking in commutation process.
Further, when moving contact group one is attracted with static contact group one, realize that A is conducted；Moving contact group two and static contact
When group four is attracted, realize that C is conducted；Moving contact group one is attracted together with static contact group two, moving contact group two and static contact group three
When, realize that B is conducted.
Further, when this device is conducted in B, the dynamical element one on switch one drives moving contact group one to the left
It is mobile, it is made to be attracted with static contact group one, realizes that A is conducted；When this device is conducted in C, the power member on switch one
Part one drives moving contact group one to be moved to the left, it is made to be attracted with static contact group one, moving contact group two under the action of connecting rod simultaneously
It is moved to the left or is moved to the left by the drive of dynamical element two on switch two, make it attracted with static contact group three, you can real
Existing A is conducted.
Further, when this device is conducted in B, the dynamical element two on switch two drives moving contact group two to the right
It is mobile, it is made to be attracted with static contact group four, realizes that C is conducted；When this device is conducted in A, the power member on switch two
Part two drives moving contact group two to move right, it is made to be attracted with static contact group four, moving contact group one under the action of connecting rod simultaneously
It moves right or is moved right by the drive of dynamical element one on switch one, make it attracted with static contact group two, you can real
Existing C is conducted.
Further, when this device is conducted in A, the dynamical element one on switch one drives moving contact group one to the right
It is mobile, it is made to be attracted with static contact group two, realizes that B is conducted；When this device is conducted in C, the power member on switch two
Part two drives moving contact group two to be moved to the left, it is made to be attracted with static contact group three, you can realizes that B is conducted.
Further, according to this realization principle and realization method, moving contact is driven by the dynamical element one in switch one
Dynamical element two in group one and switch two drives moving contact group two to be moved left and right, it is possible to realize C → A, C → B, A →
B, A → C, B → C, B → A any one commutation action.
The beneficial effects of the utility model are：
Two independent switches of the device drive two moving contact groups to be moved left and right between four static contact groups, respectively
It is attracted or is disconnected, you can realize the switching action of the three phase supply in load and power grid so that control circuit is simpler.
The device is attached using between two moving contact groups with the connecting rod with limit function, can not only be ensured every
Secondary switching can only turn on one-phase circuit, avoid occurring because of the short-circuit conditions that malfunction generation two-phase simultaneously turns on.
The device employs four static contact groups, and each static contact group is divided into two sections, according to different control
Action, can ensure when turning on one-phase circuit, in addition there is the static contact group of disconnection in quarter-phase circuit always.
The device employs the moving contact group mechanism of two two-sided four contacts, and the method for making control is simpler, in commutation
In the process, as long as one switch motion of control, it is possible to realize the disconnection and in addition actuation all the way on this road.
A kind of control method is simple in conclusion the utility model provides, locking principle is reliable, at low cost three are tangent
Changing device.
Description of the drawings
Fig. 1 is a kind of totality that the threephase load switching device with alternate blocking function is realized with two switches of utility model
Dimensional structure diagram；
Fig. 2 is the dimensional structure diagram of switch 1；
Fig. 3 is the dimensional structure diagram of switch 2；
Fig. 4 is the stereoscopic schematic diagram that load is connected with A；
Fig. 5 is the stereoscopic schematic diagram that load is connected with B；
Fig. 6 is the stereoscopic schematic diagram that load is connected with C；
Fig. 7 is the dimensional structure diagram of moving contact group one；
Fig. 8 is the dimensional structure diagram of moving contact group two.
Reference numerals list：
1. one shell of dynamical element one, 2. static contact groups one, 3. static contact groups two, 4. moving contact groups one, 5. switch, 6. are moved
Power element two, 7. static contact groups three, 8. static contact groups four, 9. moving contact groups two, 10. switch two shells, 11. connecting rods, 12. stationary contacts
Head connector；13. housing connection member, 14.A are connected fitting, 15.B be connected fitting, 16.C be connected fitting, 17. load ends connection
Part, 21. stationary contacts one, 22. stationary contacts two, 31. stationary contacts three, 32. stationary contacts four, 71. stationary contacts five, 72. stationary contacts 6 81.
Stationary contact seven, 82. stationary contacts eight, 41. movable contacts one, 42. movable contacts two, 43. movable contacts three, 44. movable contacts four, 91. are dynamic to be touched
Five, 92. movable contacts six of point, 93. movable contacts seven, 94. movable contacts eight
Specific embodiment
Below in conjunction with Fig. 1 to Fig. 8, further illustrate that with two switched a kind of to the utility model is realized with alternate locking work(
The specific embodiment of the threephase load switching device of energy is, it is necessary to which explanation, following specific embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model, the word "front", "rear" used in description, "left", "right", " on "
" under " refer to direction in attached drawing.
With reference to Fig. 1, the utility model provides a kind of switched with two and realizes that the threephase loads with alternate blocking function are cut
Changing device, upper end are with electrical input, are that the A fittings 14 that are connected are that A phases input terminal, the B fitting 15 that is connected are B phases input terminal, C respectively
The fitting 16 that is connected is B phase input terminals, and the load end connection 17 of lower end is the output terminal of load.The present apparatus passes through two individually controls
The switch of system：Switch one and switch two control the moving contact group of two groups of two-sided four contacts：Moving contact group 1 and moving contact group 29
Move left and right, be attracted or disconnected with the static contact group on the input terminal and output terminal of A, B, C three-phase respectively so that input and
Output terminal is turned on or off, and realizes that loaded line is connected compared with the switching of A, B, C three phase supply.Specific implementation switching
Process is as follows：
Load is switched to A phases by C phases：With reference to Fig. 2, Fig. 4 and Fig. 6, by the way that the dynamical element 1 on switch one is controlled to drive
Moving contact group 1 is moved to the direction of static contact group 1 so that movable contact 1 and stationary contact 1, movable contact 2 42 and quiet
Contact 2 22 is attracted simultaneously, and the two sections of static contact group 1 are turned on；Moving contact group 29 makes under the action of connecting rod simultaneously
Movable contact 7 93 and stationary contact 7 81, movable contact 8 94 and stationary contact 8 82 separate simultaneously, by the two sections of static contact group 48
It disconnects, and is moved to the direction of static contact group 37, finally make movable contact 5 91 and stationary contact 5 71, movable contact 6 92 and stationary contact
Point 6 72 is attracted or the control dynamical element 26 on switch two can be controlled to drive moving contact group 29 to static contact group 37 simultaneously
Direction movement, static contact group 48 is disconnected, static contact group 37 turns on, and realizes that load is switched to the processes of A phases by C phases；By
It being off simultaneously in the static contact group 48 in this commutation process and static contact group 23, B phases are all not turned on C phases, from
And short circuit between A, B, C three-phase is avoided, realize the alternate locking in commutation process.
Load is switched to C phases by A phases：With reference to Fig. 3, Fig. 4 and Fig. 6, by the way that the dynamical element 26 on switch two is controlled to drive
Moving contact group 29 is moved to the direction of static contact group 48 so that movable contact 7 93 and stationary contact 7 81, movable contact 8 94 and quiet
Contact 8 82 is attracted simultaneously, and the two sections of static contact group 48 are turned on；Moving contact group one makes under the action of connecting rod simultaneously
Movable contact 1 and stationary contact 1, movable contact 2 42 and stationary contact 2 22 separate simultaneously, by the two sections of static contact group 1
It disconnects, and is moved to the direction of static contact group 23, finally make movable contact 3 43 and stationary contact 3 31, movable contact 4 44 and stationary contact
Point 4 32 is attracted or the control dynamical element 1 on switch one can be controlled to drive moving contact group 1 to static contact group 23 simultaneously
Direction movement, static contact group 1 is disconnected, static contact group 23 turns on, and realizes that load is switched to the processes of A phases by C phases；By
It being off simultaneously in the static contact group 1 in this commutation process and static contact group 37, A phases are all not turned on B phases, from
And short circuit between A, B, C three-phase is avoided, realize the alternate locking in commutation process.
Load is switched to B phases by A phases：With reference to Fig. 2, Fig. 4 and Fig. 5, by the way that the dynamical element 1 on switch one is controlled to drive
Moving contact group 1 is moved to the direction of static contact group 23 so that movable contact 3 43 and stationary contact 3 31, movable contact 4 44 and quiet
Contact 4 32 is attracted simultaneously, and the two sections of static contact group 23 are turned on；In this moving process, due to two moving contact groups
On connection aperture be more than connecting rod diameter, the position of moving contact group 29 will not change at this time, i.e. movable contact 5 91 and stationary contact
Point 5 71, movable contact 6 92 and stationary contact 6 72 are in attracting state, realize that load is switched to the process of B phases by A phases;By
It being off simultaneously in the static contact group 1 in this commutation process and static contact group 48, A phases are all not turned on C phases, from
And short circuit between A, B, C three-phase is avoided, realize the alternate locking in commutation process.
Load is switched to A phases by B phases：With reference to Fig. 2, Fig. 4 and Fig. 5, by the way that the dynamical element 1 on switch one is controlled to drive
Moving contact group 1 is moved to the direction of static contact group 1 so that movable contact 1 and stationary contact 1, movable contact 2 42 and quiet
Contact 2 22 is attracted simultaneously, and the two sections of static contact group 1 are turned on；The position of moving contact group 29 will not become at this time
Change, i.e. movable contact 5 91 and stationary contact 5 71, movable contact 6 92 and stationary contact 6 72 is in attracting state, realize load by
B phases are switched to the process of A phases.Since the static contact group 24 in this commutation process and static contact group 48 are simultaneously in disconnection shape
State, B phases are all not turned on C phases, so as to avoid short-circuit between A, B, C three-phase, the alternate locking in realization commutation process.
Load is switched to B phases by C phases：By the way that the dynamical element 26 on switch two is controlled to drive moving contact group 29 to stationary contact
The direction movement of head group 37 so that movable contact 5 91 and stationary contact 5 71, movable contact 6 92 and stationary contact 6 72 are attracted simultaneously,
The two sections of static contact group 37 are turned on；In this moving process, connect since the connection aperture in two moving contact groups is more than
Shank diameter, at this time the position of moving contact group 1 will not change, i.e. movable contact 3 43 and stationary contact 3 31, movable contact 4 44
Attracting state is in stationary contact 4 32, realizes that load is switched to the process of B phases by C phases；Due in this commutation process
Static contact group 1 and static contact group 48 are off simultaneously, and A phases are all not turned on C phases, so as to avoid A, B, C three-phase
Between short circuit, realize commutation process in alternate locking.
Load is switched to C phases by B phases：With reference to Fig. 3, Fig. 5 and Fig. 6, by the way that the dynamical element 26 on switch two is controlled to drive
Moving contact group 29 is moved to the direction of static contact group 48 so that movable contact 7 93 and stationary contact 7 81, movable contact 8 94 and quiet
Contact 8 82 is attracted simultaneously, and the two sections of static contact group 48 are turned on；The position of moving contact group one will not become at this time
Change, i.e. movable contact 3 43 and stationary contact 3 31, movable contact 4 44 and stationary contact 4 32 is in attracting state, realize load by
B phases are switched to the process of C phases.Since the static contact group 1 in this commutation process and static contact group 37 are simultaneously in disconnection shape
State, A phases are all not turned on B phases, so as to avoid short-circuit between A, B, C three-phase, the alternate locking in realization commutation process.
The utility model can be also monitored and divide to the electric current in device and voltage by being equipped with other detection units
Analysis, can also be equipped with corresponding control circuit, by increasing other elements, some miscellaneous functions be realized, such as operating passing zero, remote signalling
Function, arc-suppression function etc. may be equipped with corresponding communication function, realize networking control or adjust, accomplish according to higher level's circuit
The unbalanced situation of load makes long-range switching of tri- power supplies of load and A, B, C etc..
Finally it should be noted that：Technological means disclosed in the utility model is not limited only to the above embodiment institute
Disclosed technological means, also includes technical solutions formed by any combination of the above technical features；It is new not departing from this practicality
On the premise of the spirit and scope of type, in specific apply on product, the utility model also has various changes and modifications.
Claims (14)
1. a kind of realize the threephase load switching device with alternate blocking function with two switches, which is characterized in that including switch
First, switch two, static contact connector, connecting rod；
The switch one is set with two axial symmetry of switch；
The switch one includes dynamical element one, static contact group one, static contact group two, moving contact group one, one shell of switch, power
Element one is connected with moving contact group one, and static contact group one is respectively arranged at the left side and the right side of moving contact group one with static contact group two
Side；
The switch two includes dynamical element two, static contact group three, static contact group four, moving contact group two, two shells of switch, power
Element two is connected with moving contact group two, and static contact group three is respectively arranged at the left side and the right side of moving contact group two with static contact group four
Side；
The moving contact group one is connected but is not turned on by connecting rod with moving contact group two；
The static contact group one, static contact group two, static contact group three, static contact group four are not turned on from each other, are loaded forming
Static contact group two is connected with static contact group three by static contact connector during switching device；
The switch one and switch two, are fixed by housing connection member, then are equipped with A be connected fitting, the C of fitting, B that be connected and are connected
Fitting, load end connection.
2. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 1,
It is characterized in that, it is then disconnected when moving contact group one and attracted static contact group one with static contact group two, moving contact group one and stationary contact
Head group two then disconnects when attracted with static contact group one；When moving contact group two and static contact group three are attracted then with static contact group four
It disconnects, when moving contact group two and attracted static contact group four then disconnects with static contact group three；Under the action of connecting rod, moving contact group
One then moving contact group two is disconnected with static contact group four when being attracted with static contact group one, when moving contact group two is attracted with static contact group four
Then moving contact group one is disconnected with static contact group one, realizes the alternate locking in commutation process.
3. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 2,
It is characterized in that, when moving contact group one is attracted with static contact group one, realize that A is conducted；Moving contact group two is inhaled with static contact group four
During conjunction, realize that C is conducted；When moving contact group one is attracted together with static contact group two, moving contact group two with static contact group three, realize
B is conducted；When realizing that A is conducted or C is conducted, need to only connect one group of moving contact group in circuit, when B is conducted, just need
It connects two groups of moving contact groups.
4. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 3,
It is characterized in that, when this device is conducted in B, the dynamical element one on switch one drives moving contact group one to be moved to the left,
It is made to be attracted with static contact group one, realizes that A is conducted；When this device is conducted in C, one band of dynamical element on switch one
Dynamic moving contact group one is moved to the left, it is made to be attracted with static contact group one, and moving contact group two is under the action of connecting rod simultaneously to moving to left
The dynamic or drive of dynamical element two by switching on two is moved to the left, and makes it attracted with static contact group three, you can to realize A phases
Conducting.
5. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 3,
It is characterized in that, when this device is conducted in B, the dynamical element two on switch two drives moving contact group two to move right,
It is made to be attracted with static contact group four, realizes that C is conducted；When this device is conducted in A, two band of dynamical element on switch two
Dynamic moving contact group two moves right, it is made to be attracted with static contact group four, moving contact group one moves right simultaneously under the action of connecting rod
The dynamic or drive of dynamical element one by switching on one moves right, and makes it attracted with static contact group two, you can to realize C phases
Conducting.
6. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 3,
It is characterized in that, when this device is conducted in A, the dynamical element one on switch one drives moving contact group one to move right,
It is made to be attracted with static contact group two, realizes that B is conducted；When this device is conducted in C, two band of dynamical element on switch two
Dynamic moving contact group two is moved to the left, it is made to be attracted with static contact group three, you can realizes that B is conducted.
7. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 1,
It is characterized in that, the static contact group one, static contact group two, static contact group three, static contact group four are segmented,
The static contact group one includes stationary contact one, stationary contact two, is symmetrically disposed on above and below one left side of moving contact group；
The static contact group two includes stationary contact three, stationary contact four, is symmetrically disposed on above and below one right side of moving contact group；
The static contact group three includes stationary contact five, stationary contact six, is symmetrically disposed on above and below two left side of moving contact group；
The static contact group four includes stationary contact seven, stationary contact eight, is symmetrically disposed on above and below two right side of moving contact group；
The moving contact group one includes movable contact one, and movable contact two, movable contact three, movable contact four is all conducting between each other
's；
The moving contact group two includes movable contact five, and movable contact six, movable contact seven, movable contact eight is all conducting between each other
's.
8. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 7,
It is characterized in that, movable contact one and stationary contact one, movable contact two and stationary contact two are attracted simultaneously, moving contact group one and static contact group
One realization is connected in series；Movable contact three and stationary contact three, movable contact four and stationary contact four are attracted simultaneously, moving contact group one and stationary contact
Head group two, which is realized, to be connected in series；Movable contact five and stationary contact five, movable contact six and stationary contact six are attracted simultaneously, two He of moving contact group
The realization of static contact group three is connected in series；Movable contact seven and stationary contact seven, movable contact eight and stationary contact eight are attracted simultaneously, make moving contact
Group two and the realization of static contact group four are connected in series.
9. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 1,
It is characterized in that, the moving contact group one is connected with connecting rod with moving contact group two and can be slided on connecting rod；
Minimum spacing between the unlimited braking sets of contacts one of connecting rod and moving contact group two, i.e., when moving contact group one moves right,
Therefore moving contact group two does not move, when moving contact group two is moved to the left, therefore moving contact group one does not move；
Connecting rod can limit the maximum spacing between moving contact group one and moving contact group two, i.e., when moving contact group one and moving contact group two
When being respectively at connecting rod two end, when moving contact group one is moved to the left, then it can drive moving contact group two while be moved to the left, be touched when dynamic
When head group two moves right, then it can drive moving contact group one while move right.
10. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 7,
It is characterized in that, A is connected, fitting is electrically conductive, is fixed on one shell of switch, is connected with stationary contact one, to connect A phase inlet wires.
11. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 7,
It is characterized in that, B is connected, fitting is electrically conductive, is fixed on one shell of switch, is connected with stationary contact three, to connect B phase inlet wires.
12. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 7,
It is characterized in that, C is connected, fitting is electrically conductive, is fixed on two shells of switch, is connected with stationary contact seven, to connect C phase inlet wires.
13. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 7,
It is characterized in that, load end connection is electrically conductive, it is connected simultaneously with stationary contact two, stationary contact six, stationary contact eight, to connect out
Line.
14. a kind of two threephase load switching devices of the switch realization with alternate blocking function according to claim 7,
It is characterized in that, housing connection member connection one shell of fixed switch and two shells of switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720885194.7U CN207381982U (en) | 2017-07-20 | 2017-07-20 | It is a kind of to realize the threephase load switching device with alternate blocking function with two switches |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720885194.7U CN207381982U (en) | 2017-07-20 | 2017-07-20 | It is a kind of to realize the threephase load switching device with alternate blocking function with two switches |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181269A (en) * | 2017-07-20 | 2017-09-19 | 南京捷泰电力设备有限公司 | It is a kind of to realize the threephase load switching device with alternate blocking function with two switches |
| CN112885637A (en) * | 2021-01-13 | 2021-06-01 | 株洲中车时代电气股份有限公司 | Conversion drum type three-position switch device and control method and system thereof |
-
2017
- 2017-07-20 CN CN201720885194.7U patent/CN207381982U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181269A (en) * | 2017-07-20 | 2017-09-19 | 南京捷泰电力设备有限公司 | It is a kind of to realize the threephase load switching device with alternate blocking function with two switches |
| CN112885637A (en) * | 2021-01-13 | 2021-06-01 | 株洲中车时代电气股份有限公司 | Conversion drum type three-position switch device and control method and system thereof |
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Effective date of registration: 20190531 Address after: Room 201, Building 101, 108 Biandong Ganjia, Yaohua Street, Qixia District, Nanjing, Jiangsu Province Patentee after: Nanjing Zheng Tailong Science and Technology Ltd. Address before: 211134 Tansi Road, Shangfeng District, Tangshan Street, Jiangning District, Nanjing City, Jiangsu Province Patentee before: Nanjing Jietai Electric Power Equipment Co., Ltd. |
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