CN85205796U - Power distribution unit with transfer switch for two power supplies - Google Patents
Power distribution unit with transfer switch for two power supplies Download PDFInfo
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- CN85205796U CN85205796U CN 85205796 CN85205796U CN85205796U CN 85205796 U CN85205796 U CN 85205796U CN 85205796 CN85205796 CN 85205796 CN 85205796 U CN85205796 U CN 85205796U CN 85205796 U CN85205796 U CN 85205796U
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Abstract
The utility model relates to a diverter switch power distribution device with two electric sources, belonging to a low-voltage electric appliance. The diverter switch power distribution device with two electric sources can be used for the switching of two power supply electric sources or a plurality of power supply electric sources of a self-preparing generator network and a power distribution network. The occurrence of the electric shock injury accident of inverse power feeding can be prevented, and safety can be ensured. The utility model is characterized in that a diverter switch [30] with two electric sources is arranged, that the switch is provided with three positions of switching, isolating and switching, and that circuit connection is improved.
Description
The utility model belongs to low-voltage electrical apparatus, and the switchboard that double power supply converting switch device is installed can be applied to the switching of house generator networking and two power supplies of electric power distribution network or a plurality of power supply sources.
Because user's needs itself and the situation that also there is breach in supply of electric power, self power generation and small power station all are that the user undertakes and remedies the scarce lotus of electric power or reach the measure that uninterrupted production is taked in the many areas of China.Therefore utilize the be not incorporated into the power networks situation of electricity consumption of house generator group in the electricity consumer, accounted for a great deal ofly in many areas, and its quantity rises day by day.Because there are two power supplies in these users, thereby many work have been increased in the management of electric industry department safety in production, comprising requiring electricity consumer must possess reliable and secure electrical control gear, the safety of promptly controlling two power connections and disjunction is switched special-purpose switchboard.Particularly in the rural area, the mountain area, do not have the control device of safety, if above-mentioned electric device and manipulating is paid no heed to, will cause the electric shock injury accident of " sending ".
It is many-sided causing the reason of " sending " accident, for the power supply that prevents the self power generation networking " send " to electric power distribution network, make electric industry department when dead line operation, electrician work on relevant power failure equipments, the danger of incoming call suddenly of avoiding meeting accident on the dead line power failure equipments is improved power transfer device and is very important.Usually use double-throw knife switch HS13 assembling low-voltage distribution panel now, for example an electricity consumer is because electric power is different with the electric light electricity price, in power transfer device, electric power and illumination are established two electricity-measuring meters and HS13 knife switch respectively, such two power supplies are connected with two HS13 double-throw knife switches respectively, and the interlock that two double-throw knife switches is not added in addition machinery just can not be realized switching the same period of power supply.If under the situations such as the inner short at the networking, instrument, load appliance zero line break, knife switch does not successively cut off to the same period and connects two power supplys, will cause to electric power distribution network and " send ".At this moment have one in above-mentioned two knife switches in the position of connecting electrical network, another makes the load line energising feed back to transformer in the position of connecting house generator, sends into electric power distribution network through boosting, and damages peril.
The purpose of this utility model is to propose the design that a kind of novel circuit comprises duplicate supply disconnecting link switch, use the switchboard of this twin-power switch device, through manual once-through operation, just can change the use power supply of electric power distribution network and self power generation, guarantee that under any circumstance the self power generation networking is not connected with electric power distribution network, stop the disadvantage that circuit " send " in the supply district.
Double power supply converting switch of the present utility model is a frame structure, connects the hand lever operating mechanism.Outling of truss becomes " H " shape of symmetry, and symmetrical upper and lower fixed contact is installed on the frame plate of front and back, by the moving contact of manual operating and the control of lever bindiny mechanism, the stop place of three different operating states is arranged, and is respectively; 1 connects the front frame board upper and lower static contact; 2. isolate with the two ends fixed contact; 3. the rear frame panel upper and lower static contact is connected, thereby realized Switching power safely.Above-mentioned moving contact can use the RTO fuse as the moving contact plug-in strip, in the low-voltage distribution cabinet of the present utility model, the different electrical power incoming line connects the upper static contact of twin-power switch respectively, the different electrical power pipeline connects down fixed contact respectively, electric industry power, illumination electricity-measuring meter and provide the generating electricity-measuring meter for oneself and be connected on respectively on the power delivery line, and connect power and illumination output line by power output double-throw knife switch and illumination output double-throw knife switch.For plural many power supplys, two groups of upper static contacts can connect the networking power supply of two self power generation equipment of paired running and the networking power supply of paired running two station power distribution transformers.The composite set that comprises three double power supply converting switch can be used for not two self power generation equipment of paired running and a station power distribution transformer or not paired running two station power distribution transformers and many power safety switchings that self power generation equipment is formed.
Twin-power switch novel structure of the present utility model, safe in utilization, can make moving contact move the fixed contact disconnection-isolation with two ends-connection by manual once-through operation, thereby accept and export in two power supplys any one, and the power supply at two different networkings is not linked up mutually, avoided " sending ".Therefore the twin-power switch device has following good result of use:
(1) can switch as the power supply of the various electricity consumers that are not incorporated into the power networks, reaching does not in use have the purpose that electricity is sent in the loop.
(2) in the operation of the present utility model, one time changeover program promptly meets disconnection power distribution network power supply earlier, and the requirement of self-powered is connected in the back, and the same once-through operation of opposite program can be finished.
(3) when having on the electricity consumer controller switching equipment under the specific (special) requirements situation, be equipped with electrical installation or assemble a plurality of double power supply converting switch devices, just can finish the switching of many power supplys more than three or three, prevent to send.
(4) moving contact has tangible cut-off point between the fixed contact of two ends, so the break-make of this switching device is obvious, can use when the power failure equipments of switch both sides being carried out Maintenance and Repair work.
(5) two power supplys all adopt three-phase and four-line, distribution transformer " zero " line and the difference of spontaneous motor " N " line are separated, each Xingqi duty.
(6) purposes such as electricity consumption, the special power reguirements of the inner electric equipment of user that can not be incorporated into the power networks for small power station and electric power distribution network are used.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the perspective view of a kind of double power supply converting switch of the present utility model.
Fig. 2 is the vertical view of Fig. 1 switch.
Fig. 3 is the A-A cutaway view of Fig. 2 switch.
Fig. 4 is the B-B cutaway view of Fig. 2 switch.
Fig. 5 puts schematic diagram for the moving contact disconnecting link work of Fig. 3 switch.
Fig. 6 assembles schematic diagram for Fig. 3 switch switches on the special-purpose switchboard in safety.
Fig. 7 is combined as the assembling use schematic diagram of the special-purpose switchboard of self power generation for Fig. 3 switch and low-voltage distribution panel.
Fig. 8 is a kind of " sending " accident schematic diagram of general double-throw knife switch.
Fig. 9 is Fig. 3 switch single line key wiring diagram.
Figure 10 is that winding diagram is removed in the throwing of Fig. 9 low-voltage distribution networking, the self-powered that is not incorporated into the power networks.
Figure 11 is the switching device key wiring diagram of two generators of paired running and paired running two station power distribution transformers.
Figure 12 is the switching device key wiring diagram of two station power distribution transformers not in parallel and a house generator.
Figure 13 is the switching device key wiring diagram of two house generators of paired running and a station power distribution transformer not.
Referring to figs. 1 through Fig. 5, two block frame plates ［ 4 ］ ［ 40 ］ before and after double power supply converting switch ［ 30 ］ comprises, frame plate is connected with outer guide ［ 6 ］ by connecting plate ［ 5 ］, outling of truss becomes " H " shape, before, on four fixed contact fixed installation laths ［ 9 ］, upper static contact ［ 1 ］ and following fixed contact ［ 2 ］ are set symmetrically on the rear frame panel ［ 4 ］ ［ 40 ］, moving contact ［ 3 ］ is installed on the moving contact movable installation lath ［ 8 ］, the interior guide rail ［ 7 ］ by being installed in moving contact movable slats ［ 8 ］ two ends and the effect of outer guide ［ 6 ］, moving contact ［ 3 ］ can move by along continuous straight runs.Be installed in the lever steering spindle and the fixed mount ［ 10 ］ thereof in front frame board ［ 4 ］ outside, by connecting rod ［ 11 ］, auxiliary lever ［ 12 ］ and main lever ［ 13 ］ are connected the movable lath ［ 8 ］ of installing of moving contact with operating mechanism.The manipulator thing comprises double end set screw ［ 14 ］, movable rod ［ 15 ］, operation handlebar setting stick bearing pin ［ 16 ］, operation handlebar setting stick ［ 17 ］ and push-and-pull operating handle ［ 18 ］.
From Fig. 3 and Fig. 4 as can be seen, when palm moved push-and-pull operating handle ［ 18 ］, its transmission was by way of being movable lath ［ the 8 ］ → moving contact ［ 3 ］ of installing of operation handlebar setting stick ［ 17 ］ → movable rod ［ 15 ］ → double end set screw ［ 14 ］ → main lever ［ 13 ］ → auxiliary lever ［ 12 ］ → connecting rod ［ 11 ］ → moving contact.Moving contact ［ 3 ］ connects or disconnects the upper static contact ［ 1 ］ of correspondence with following fixed contact ［ 2 ］.
As can be seen from Figure 5, RTO fuse as moving contact ［ 3 ］ has three tangible stop places, along with push-and-pull operating handle ［ 18 ］ upwards, level and the floor is moving downwards, main lever ［ 13 ］ and auxiliary lever ［ 12 ］, 45 ° forward, vertically downward, 45 ° of rotations backward, make and be installed in the movable moving contact of installing on the lath ［ 8 ］ ［ 3 ］ of moving contact, along interior guide rail ［ 7 ］ and outer guide ［ 6 ］ move in the horizontal direction the S square from, realize connecting front baffle ［ 4 ］, upper and lower fixed contact ［ 1 ］ ［ 2 ］; Isolate with the two ends fixed contact; Connect ［ 2 ］ three operating states of the upper and lower fixed contact of afterframe ［ 40 ］ ［ 1 ］, finish the requirement of safe Switching power.
With reference to Fig. 6 and Fig. 7, when low-voltage distribution panel ［ 29 ］ was installed double power supply converting switch ［ 30 ］, self-powered incoming line ［ 19 ］ was connected with the upper static contact ［ 1 ］ of rear frame panel, and self-powered pipeline ［ 20 ］ is connected with fixed contact ［ 2 ］ under it; Electric network source incoming line ［ 21 ］ is connected with the upper static contact ［ 1 ］ of front frame board, electric network source pipeline ［ 22 ］ is connected with fixed contact ［ 2 ］ under it, electric industry dynamic measurement kilowatt-hour meter ［ 25 ］ and electric industry illumination electricity-measuring meter ［ 26 ］ are installed in and can have in the case of hagioscope by seal, respectively by different electricity price computational costs.
Low-voltage distribution panel ［ 29 ］ and electric network source transformer ［ 23 ］, provide generating equipment ［ 24 ］ for oneself, other combination power distribution cabinets match, and become " double power supply converting switch power distribution equipment ".
With reference to Fig. 8. electrification, in use may take place to send, as shown in the figure in the power distribution equipment of general double-throw knife switch HS13.When electric power distribution network does not have electricity, when the user provides generating equipment ［ 24 ］ generating for oneself, to export double-throw knife switch ［ 31 ］ when power and do not draw back, the output double-throw knife switch ［ 32 ］ that will throw light on this moment pulls to self power generation, and the illumination lamp line gets electric, and electric light is bright.
At this moment lamp line and powered wire are because of short circuit place ［ 35 ］ of colliding of broken reason such as naked, make electric current turn back to power output double-throw knife switch ［ 31 ］ load Chinese toon head, because double-throw this moment cutter is upwards identical with the last Chinese toon head of electric power distribution network, cause voltage to boost 25 times through electric network source transformer ［ 23 ］ and see off, so just caused the peril of the unexpected incoming call of electric power distribution network that has a power failure from low-pressure side.
With reference to Fig. 9 and Figure 10, for 20～320 kilowatts of big-and-middle-sized power consumers, join the BSL low-voltage distribution cabinet, the key wiring diagram that the double power supply converting switch power distribution equipment adopts is shown in figure ［ 9 ］.Electric network source transformer ［ 23 ］ is connected by its electric network source incoming line ［ 21 ］ on the upper static contact ［ 1 ］ of double power supply converting switch ［ 30 ］ one ends, and self power generation equipment ［ 24 ］ is connected on the upper static contact ［ 1 ］ of double power supply converting switch ［ 30 ］ other end by its self-powered incoming line ［ 19 ］.Electric network source pipeline ［ 22 ］ has been installed in parallel electric industry dynamic measurement kilowatt-hour meter ［ 25 ］ and illumination electricity-measuring meter ［ 26 ］, and self-powered pipeline ［ 20 ］ inserts self power generation electricity-measuring meter ［ 27 ］.Electric network source transportion wire ［ 22 ］ and self-powered pipeline ［ 20 ］ are connected with illumination output line ［ 34 ］ with power output line ［ 33 ］ with illumination output double-throw knife switch ［ 32 ］ by power output double-throw knife switch ［ 31 ］.
Winding diagram is removed in the throwing of above-mentioned single line key wiring diagram, as shown in figure 10.
With reference to Figure 11, two electric network source transformers ［ 23 ］ of paired running can be imported single-throw switch ［ 36 ］ by electric network source and be connected with the upper static contact ［ 1 ］ of double power supply converting switch ［ 30 ］ one ends with double-throw switch ［ 37 ］; Two generators ［ 24 ］ of paired running can be imported single-throw switch ［ 38 ］ by self-powered and be connected with the upper static contact ［ 1 ］ of double-throw switch ［ 39 ］ with double power supply converting switch ［ 30 ］ other end.By the outlet line of key wiring diagram shown in Figure 9, the double power supply converting switch power distribution equipment can carry out safe switching to plural different electrical power.
With reference to Figure 12, for two electric network source transformers ［ 23 ］ that are not in parallel and a self power generation equipment ［ 24 ］, two groups of power output lines ［ 33a ］, ［ 33b ］ and illumination output line ［ 34a ］, ［ 34b ］, distribution line, can adopt the composite set of three double power supply converting switch ［ 30a ］, ［ 30b ］, ［ 30c ］, described three power supplys that are not in parallel are carried out safe switching.
As shown in figure 12, the incoming line of an electric network source transformer ［ 23a ］ is connected with the rear end upper static contact of double power supply converting switch ［ 30a ］, an incoming line of providing generating equipment ［ 24 ］ for oneself is connected with the rear end upper static contact of double power supply converting switch ［ 30c ］, and the incoming line of another electric network source transformer ［ 23b ］ is connected with the rear end upper static contact of double power supply converting switch ［ 30c ］.One group of conveying circuit as shown in Figure 9 is connected with the following fixed contact of double power supply converting switch ［ 30a ］, and conveying circuit comprises: electric industry dynamic measurement kilowatt-hour meter ［ 25a ］, electric industry illumination electricity-measuring meter ［ 26a ］, power output double-throw knife switch ［ 31a ］, illumination output double-throw knife switch ［ 32a ］ and power output line ［ 33a ］, illumination output line ［ 34a ］.Another group conveying circuit is connected with the following fixed contact of double power supply converting switch ［ 30b ］, and conveying circuit comprises: electric industry dynamic measurement kilowatt-hour meter ［ 25b ］, electric industry illumination electricity-measuring meter ［ 26b ］ power output double-pole switch ［ 31b ］, power output double-throw knife switch ［ 32b ］ and power output line ［ 33b ］, illumination output double-throw knife switch ［ 32b ］ and power output line ［ 33b ］, illumination output line ［ 34b ］.
Three groups of boost lines are set between three double power supply converting switch ［ 30a ］, ［ 30b ］, ［ 30c ］ to interconnect.The auxiliary wiring of double power supply converting switch ［ 30a ］ interconnects fixed contact under the rear end of its front end upper static contact and double power supply converting switch ［ 30c ］.The auxiliary wiring of double power supply converting switch ［ 30b ］ interconnects fixed contact under the front end of its rear end upper static contact and double power supply converting switch ［ 30a ］.The auxiliary wiring of double power supply converting switch ［ 30c ］ interconnects the front end upper static contact of fixed contact and double power supply converting switch ［ 30b ］ under its front end.
Above-mentioned power distribution equipment can be at one or two electric network source transformers ［ 23a ］, ［ 23b ］ when not powering, and the power supply of a self power generation equipment ［ 24 ］ is switched on two different outlet lines.
With reference to Figure 13, to the distribution line of an electric network source transformer ［ 23 ］ and two self power generation equipment ［ 24a ］ that is not in parallel, ［ 24b ］, two groups of power output lines ［ 33a ］, ［ 33b ］ and illumination conveying circuit ［ 34a ］, ［ 34b ］, can carry out power supply switching safely with double power supply converting switch ［ 30a ］, ［ 30b ］, ［ 30c ］ composite set of similar Figure 12.
As shown in figure 13, the power input line of a self power generation equipment ［ 24a ］ is connected with the rear end upper static contact of double power supply converting switch ［ 30a ］, the incoming line of an electric network source transformer ［ 23 ］ is connected with the rear end upper static contact of double power supply converting switch ［ 30c ］, and the power input line of another self power generation equipment ［ 24b ］ is connected with the front end upper static contact of double power supply converting switch ［ 30c ］.
Fixed contact interconnects by the front end upper static contact of auxiliary wiring and double power supply converting switch ［ 30a ］ under the front end of double power supply converting switch ［ 30c ］; Fixed contact interconnects by the front end upper static contact of auxiliary wiring and double power supply converting switch ［ 30b ］ under the rear end.
Fixed contact connects one group of pipeline connection under the rear end of double power supply converting switch ［ 30a ］, is connected with power output line ［ 33a ］ illumination output line ［ 34a ］ by power output double-throw knife switch ［ 31a ］, illumination output double-throw knife switch ［ 32a ］.
Fixed contact connects another group self-powered pipeline under the front end of double power supply converting switch ［ 30b ］, is connected with another group power output line ［ 33b ］, illumination output line ［ 34b ］ by power output double-throw knife switch ［ 31b ］, illumination output double-throw knife switch ［ 32b ］.
Under the front end of double power supply converting switch ［ 30a ］ fixed contact get access to grid power delivery line ［ 22 ］, electric industry dynamic measurement kilowatt-hour meter ［ 25 ］, electric industry lighting meter ［ 26 ］, is connected with illumination double-throw knife switch ［ 31a ］, ［ 32a ］ with one group of power then, by auxiliary wiring and another group power with throw light on export double-throw knife switch ［ 31b ］, ［ 32b ］ is connected.
Above-mentioned power distribution equipment can be sent into the power supply of two generating equipments not in parallel ［ 24a ］, ［ 24b ］ respectively two power and illumination outlet line, perhaps an electric network source transformer is powered to two outlet lines.
Claims (4)
1, a kind of power distribution equipment that belongs to low-voltage electrical apparatus, it comprises power input line, the power delivery line, electricity-measuring meter, double-throw knife switch and power supply output line, it is characterized in that power input line [19], [21] and power delivery line [20], [22] insert double power supply converting switch [30] between, the moving contact [3] of double power supply converting switch [30] is on the two ends, following fixed contact [1], [2] there is connection one to isolate one and connects three stop places, above-mentioned power input line [19], [21] upper static contact [1] with double power supply converting switch [30] two ends is connected, power delivery line [20], [22] the following fixed contact [2] with double power supply converting switch [30] two ends is connected.
2, by the described power distribution equipment of claim 1, it is characterized in that described double power supply converting switch ［ 30 ］ is frame structure, outling of truss is made of " H " shape of symmetry front frame board ［ 4 ］, rear frame panel ［ 40 ］ and connecting plate ［ 5 ］, outer guide ［ 6 ］, the moving contact ［ 3 ］ that is connected with the hand lever operating mechanism is one group of four disconnecting link, and described moving contact ［ 3 ］ can adopt the RTO fuse.
3, by the described power distribution equipment of claim 1, it is characterized in that to connect on described power input line ［ 19 ］, ［ 21 ］ and comprise double-pole switch ［ 37 ］, ［ 39 ］ and single-throw knife switch ［ 36 ］, ［ 38 ］, two self power generation equipment ［ 24a ］ of two electric network source transformers ［ 23a ］, ［ 23b ］ and the paired running of paired running, the power input line road of ［ 24b ］.
4, by the described power distribution equipment of claim 1, it is characterized in that device by three double power supply converting switch ［ 30 ］ combinations, power input line can connect two not paired running electric network source transformer ［ 23a ］, ［ 23b ］, a self power generation equipment ［ 24 ］ or connect two not self power generation equipment ［ 24a ］, ［ 24b ］, electric network source transformers ［ 23 ］ of paired running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85205796 CN85205796U (en) | 1985-12-05 | 1985-12-05 | Power distribution unit with transfer switch for two power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85205796 CN85205796U (en) | 1985-12-05 | 1985-12-05 | Power distribution unit with transfer switch for two power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85205796U true CN85205796U (en) | 1986-08-20 |
Family
ID=4800782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85205796 Ceased CN85205796U (en) | 1985-12-05 | 1985-12-05 | Power distribution unit with transfer switch for two power supplies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85205796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447739B (en) * | 2007-11-27 | 2012-06-20 | 鸿富锦精密工业（深圳）有限公司 | Three-phase AC power switching circuit |
| CN110635554A (en) * | 2019-09-30 | 2019-12-31 | 上海置信电气非晶有限公司 | Emergency power supply device of box-type substation |
-
1985
- 1985-12-05 CN CN 85205796 patent/CN85205796U/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447739B (en) * | 2007-11-27 | 2012-06-20 | 鸿富锦精密工业（深圳）有限公司 | Three-phase AC power switching circuit |
| CN110635554A (en) * | 2019-09-30 | 2019-12-31 | 上海置信电气非晶有限公司 | Emergency power supply device of box-type substation |
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