CN204408004U - Double loop power supply inlet wire switching device shifter - Google Patents
Double loop power supply inlet wire switching device shifter Download PDFInfo
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- CN204408004U CN204408004U CN201520088595.0U CN201520088595U CN204408004U CN 204408004 U CN204408004 U CN 204408004U CN 201520088595 U CN201520088595 U CN 201520088595U CN 204408004 U CN204408004 U CN 204408004U
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- contactor
- switch
- auxiliary contact
- service entrance
- parallel circuits
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Abstract
The utility model discloses a kind of double loop power supply inlet wire switching device shifter, the three-phase inlet wire of electric power incoming line part connects one end of service entrance switch, and the other end of service entrance switch connects the main contacts of contactor; The respective pins of change over switch is connected between service entrance switch and the main contacts of contactor; Rotary switch is connected between change over switch and parallel circuits; The coil power harvester that parallel circuits comprises voltage relay group, contactor and time relay voltage relay group is separately positioned on every phase electric wire of service entrance switch lower end; Protection fuse is connected between three-phase inlet wire with change over switch with on every phase electric wire of voltage relay group.The utility model overcomes the shortcoming of each scheme in prior art simultaneously, makes power transfer device better effects if, more stable.
Description
Technical field
The utility model relates to the switching device shifter in ac and dc systems and accident lighting system between the primary, spare power supply of inlet wire, is specifically related to a kind of double loop power supply inlet wire switching device shifter.
Background technology
Electric power system, in order to the reliability of electric equipment operation, adds a stand-by power supply especially, so that equipment can not power-off when primary power cource dead electricity, switching device shifter just must be had under these circumstances to switch working power.Have in present ac and dc systems and be much electronic digital type switching device shifter and directly interlock switching device shifter, consider the unsteadiness of precise electronic components and parts, the switch failure that electronic digital type switching device shifter may cause causes electric power accident.Digital switching device shifter also erroneous judgement or electronic devices and components can damage and produce risk in addition.Direct interlocking switching device shifter is switched by contactor interlocking, contactor is electromagnetic device, sucting speed is (10-20ms) also quickly, if direct charged switching between primary, spare power supply, the primary electric contactor of very possible generation does not discharge contactor for subsequent use in adhesive, will produce instantaneous short circuit.
Utility model content
In order to solve the problem, the utility model discloses a kind of double loop power supply inlet wire switching device shifter.
The technical solution of the utility model is as follows:
A kind of double loop power supply inlet wire switching device shifter, comprises the first service entrance switch, the second service entrance switch, change over switch, the first rotary switch combination, the second rotary switch combination, the first contactor, the second contactor, the first parallel circuits and the second parallel circuits; Described change over switch comprises the first pin to the 8th pin; Described double loop power supply inlet wire switching device shifter comprises first via electric power incoming line part and the second road electric power incoming line part;
The three-phase inlet wire of described first via electric power incoming line part connects one end of the first service entrance switch, and the other end of the first service entrance switch connects the main contacts of the first contactor; The 7th pin and the 3rd pin of change over switch is connected between the main contacts of the first service entrance switch and the first contactor; First rotary switch is connected between change over switch and the first parallel circuits; Described first parallel circuits comprises three tunnels circuit in parallel mutually;
The first via of described first parallel circuits comprises the first voltage relay group, the auxiliary contact of the second contactor and the coil-end of very first time relay; First voltage relay group connects one end of the auxiliary contact of the second contactor, and the auxiliary contact other end of the second contactor connects the coil-end of very first time relay; The coil power harvester of described first voltage relay group is separately positioned on every phase electric wire of the first service entrance switch lower end;
Second road circuit of described first parallel circuits comprises the timing closing contact of very first time relay and the first auxiliary contact of the first contactor, connects with the first auxiliary contact of the first contactor in the timing closing contact of very first time relay;
3rd road circuit of described first parallel circuits comprises the second auxiliary contact and first signal lamp of the first contactor, and the second auxiliary contact of the first contactor are connected with the first signal lamp;
The three-phase inlet wire of described second road electric power incoming line part connects one end of the second service entrance switch, and the other end of the second service entrance switch connects the main contacts of the second contactor; The 5th pin and first pin of change over switch is connected between the main contacts of the second service entrance switch and the second contactor; Second rotary switch is connected between change over switch and the second parallel circuits, and described second parallel circuits comprises three tunnels circuit in parallel mutually;
The first via of described second parallel circuits comprises the second voltage relay group, the auxiliary contact of the first contactor and the coil-end of second time relay; Second voltage relay group connects one end of the auxiliary contact of the second contactor, and the auxiliary contact other end of the second contactor connects the coil-end of second time relay; The coil power harvester of described second voltage relay group is separately positioned on every phase electric wire of the second service entrance switch lower end;
Second road circuit of described second parallel circuits comprises the timing closing contact of second time relay and the first auxiliary contact of the second contactor, connects with the first auxiliary contact of the second contactor in the timing closing contact of second time relay;
3rd road circuit of described second parallel circuits comprises the second auxiliary contact and the secondary signal lamp of the first contactor, and the second auxiliary contact of the second contactor are connected with secondary signal lamp.
Its further technical scheme is: also comprise protection fuse, and described protection fuse has eight, is connected between three-phase inlet wire with change over switch, on every phase electric wire of the first voltage relay group and on every phase electric wire of the second voltage relay group.
Advantageous Effects of the present utility model is:
The stand-by power supply that the utility model is applicable to alterating and direct current origin system switches.The utility model is provided with two voltage relay groups; gather two-way AC-input voltage respectively; when the input voltage on a wherein road is higher or lower than set point; this actuating of relay; contact will be opened; switching device shifter will be switched to an other road power supply and get on, and reaches the object of cut-in stand-by power supply, protects the stability of output voltage.Use the utility model, when can avoid using electronic digital type switching device shifter, the switch failure that the unsteadiness of precise electronic components and parts may cause and the electric power accident caused, also avoid the switching device shifter that use contactor is electromagnetic device simultaneously, the too fast instantaneous short circuit caused of sucting speed, visible the utility model overcomes the shortcoming of each scheme in prior art simultaneously, makes power transfer device better effects if, fault is few, and device is more stable.
Accompanying drawing explanation
Fig. 1 is the utility model pin winding diagram.
Fig. 2 is the method for attachment protecting fuse in voltage relay.
Embodiment
Circuit element of the present utility model, quantity and code are as shown in the table:
| Title | Quantity | Code |
| Change over switch | 1 | SA |
| Circuit breaker | 2 | QF1～QF2 |
| Protection fuse | 8 | FU |
| Rotary switch combines | 2 | SB1,SB1’～SB2,SB2’ |
| Contactor | 2 | KM1～KM2 |
| Voltage relay | 6 | FV1～FV3 |
| The time relay | 2 | KT1～KT2 |
| Signal lamp | 2 | HL1-HL2 |
Fig. 1 is each component's feet winding diagram of the utility model.
Double loop power supply inlet wire switching device shifter of the present utility model comprises first via electric power incoming line part and the second road electric power incoming line part.
The three-phase inlet wire A1 of first via electric power incoming line part, B1, C1 connects one end of service entrance switch QF1, and the other end of service entrance switch QF1 connects the main contacts KM1A of contactor KM1, connects the 7th pin and the 3rd pin of change over switch SA between the main contacts KM1A of service entrance switch QF1 and contactor KM1.
Change over switch SA is connected to one end of rotary switch combination S B1-SB1 ', and the other end of rotary switch combination S B1-SB1 ' connects parallel circuits 1.
Parallel circuits 1 comprises three tunnels circuit in parallel mutually.The first via of parallel circuits 1 comprises voltage relay group 1FV1 ~ 1FV3, the auxiliary contact KM2B of contactor KM2 and the coil-end KT1A of time relay KT1.Voltage relay group 1FV1 ~ 1FV3 connects one end of the auxiliary contact KM2B of contactor KM2B, the coil-end KT1A of the auxiliary contact KM2B other end connect hours relay K T1 of contactor KM2B.The coil power harvester of voltage relay group 1FV1 ~ 1FV3 is separately positioned on every phase electric wire of service entrance switch QF1 lower end, gathers the input voltage of each phase.
The timing closing contact KT1B that second road circuit of parallel circuits 1 comprises the timing closing contact KT1B of time relay KT1 and the auxiliary contact KM1B of contactor KM1B, time relay KT1 connects with the auxiliary contact KM1B of contactor KM1.
3rd road circuit of parallel circuits 1 comprises auxiliary contact KM1C and the signal lamp HL1 of contactor KM1, and the auxiliary contact KM1C of contactor KM1 connects with signal lamp HL1.
The three-phase inlet wire A2 of the second road electric power incoming line part, B2, C2 connects one end of service entrance switch QF2, and the other end of service entrance switch QF2 connects the main contacts KM2A of contactor KM2, connects the 5th pin and first pin of change over switch SA between the main contacts KM2A of service entrance switch QF2 and contactor KM2.
Change over switch SA is connected to one end of rotary switch combination S B2-SB2 ', and the other end of rotary switch combination S B2-SB2 ' connects parallel circuits 2.Parallel circuits 2 comprises three tunnels circuit in parallel mutually.
The first via of parallel circuits 2 comprises voltage relay group 2FV1 ~ 2FV3, the auxiliary contact KM1B of contactor KM1 and the coil-end KT2A of time relay KT2, voltage relay group 2FV1 ~ 2FV3 connects one end of the auxiliary contact KM2B of contactor KM2, the coil-end KT2A of the auxiliary contact KM2B other end connect hours relay K T2 of contactor KM2.The coil power harvester of voltage relay group 2FV1 ~ 2FV3 is separately positioned on every phase electric wire of service entrance switch QF2 lower end, gathers the input voltage of each phase.
The timing closing contact KT2B that second road circuit of parallel circuits 2 comprises the timing closing contact KT2B of time relay KT2 and the auxiliary contact KM2B of contactor KM2, time relay KT2 connects with the auxiliary contact KM2B of contactor KM2.
3rd road circuit of parallel circuits 2 comprises auxiliary contact KM2C and the signal lamp HL2 of contactor KM2, and the auxiliary contact KM2C of contactor KM2 connects with signal lamp HL2.
In FIG, change over switch SA is schematic diagram, and in reality, change over switch SA can pass through peripheral operation, is transformed into all directions, and then the pin that selection is connected, specific as follows:
0 degree of direction of change over switch SA is position of rest, and all pins disconnect.
90 degree of directions of change over switch SA, the first pin and the second pin completes, the 7th pin and the 8th pin completes.
180 degree of directions of change over switch SA, the 5th pin and the 6th pin completes.
270 degree of directions of change over switch SA, the 3rd pin and the 4th pin completes.
In FIG, the coil power harvester of each voltage relay is respectively in its corresponding service entrance switch lower end, namely the coil power harvester of voltage relay group 1FV1 ~ 1FV3 is in service entrance switch QF1 lower end, the coil power harvester of voltage relay group 2FV1 ~ 2FV3 is in the lower end of service entrance switch QF2, and every phase voltage on each road of such double loop power supply inlet wire part is all monitored by a voltage relay.Protection fuse all gone here and there by each voltage relay.
Voltage relay in voltage relay group 1FV1 ~ 1FV3 and voltage relay group 2FV1 ~ 2FV3 can be arranged separately, and can monitor that the mistake of every phase voltage is owed a debt of gratitude condition, and when voltage reaches the threshold value of setting, corresponding relay is started working.The scope of application such as arranging voltage relay is 300 ~ 450V, and so when this phase voltage is lower than 300V or higher than 450V, corresponding relay will action.
Rotary switch combination S B1-SB1 ' and rotary switch combination S B2-SB2 ' can drop into or excision function by unrestricted choice.
Fig. 2 is the method for attachment protecting fuse FU in voltage relay, on every phase electric wire that protection fuse FU is connected on first voltage relay group 1FV1 ~ 1FV3 and on every phase electric wire of second voltage relay group 2FV1 ~ 2FV3.
Concrete implementation method:
(1) automatically switch.
Close rotary switch combination S B1-SB1 ' and rotary switch combination S B2-SB2 '; Close service entrance switch QF1, voltage relay group 1FV1 ~ 1FV3 action, the closing of contact; Close service entrance switch QF2, voltage relay group 2FV1 ~ 2FV3 action, the closing of contact; Change over switch SA is threaded to 90 degree of positions, first pin of change over switch SA and the second pin conducting, 7th pin and the 8th pin conducting, time relay KT1 and time relay KT2 simultaneously electric, but the preferential action of the time relay that delay time is short, contacts of contactor excises another road power supply simultaneously.When AC power dead electricity or phase shortage, overvoltage, time under-voltage, this road power supply relay action, contact is often opened, the coil losing electricity of contactor, and contact discharges, this road power supply excision.Another road power supply relatively, when the contacts of contactor of dead electricity releases, the time relay obtains electric, and contactor time delay adhesive, completes automatic switchover.
(2) manual switchover,
To close service entrance switch QF1 and service entrance switch QF2, voltage relay group 1FV1 ~ 1FV3 action, the closing of contact, voltage relay group 2FV1 ~ 2FV3 action, the closing of contact; When change over switch SA is threaded to 180 degree of positions, the 5th pin of change over switch SA and the 6th pin conducting, time relay KT2 obtains electric, and contactor KM2 time delay adhesive, bright HL2 is bright for indicator light.When change over switch SA is threaded to 270 degree of positions, the 3rd pin of change over switch SA and the 4th pin conducting, time relay KT1 obtains electric, contactor KM1 time delay adhesive.Indicator light HL1 is bright.
Also directly can pass through rotary switch combination S B1-SB1 ' and rotary switch combination S B2-SB2 ', directly manually carry out the power supply selecting access.
Above-described is only preferred implementation of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate under the prerequisite not departing from spirit of the present utility model and design, all should think and be included within protection range of the present utility model.
Claims (2)
1. a double loop power supply inlet wire switching device shifter, it is characterized in that: comprise the first service entrance switch (QF1), the second service entrance switch (QF2), change over switch (SA), the first rotary switch combination (SB1-SB1 '), the second rotary switch combination (SB2-SB2 '), the first contactor, the second contactor, the first parallel circuits (1) and the second parallel circuits (2); Described change over switch (SA) comprises the first pin to the 8th pin; Described double loop power supply inlet wire switching device shifter comprises first via electric power incoming line part and the second road electric power incoming line part;
Three-phase inlet wire (the A1 of described first via electric power incoming line part, B1, C1) connect one end of the first service entrance switch (QF1), the other end of the first service entrance switch (QF1) connects the main contacts (KM1A) of the first contactor; The 7th pin and the 3rd pin of change over switch (SA) is connected between the main contacts (KM1A) of the first service entrance switch (QF1) and the first contactor; Described first rotary switch combination (SB1-SB1 ') be connected between change over switch (SA) and the first parallel circuits (1); Described first parallel circuits (1) comprises three tunnels circuit in parallel mutually;
The first via of described first parallel circuits (1) comprises the first voltage relay group (1FV1 ~ 1FV3), the auxiliary contact (KM2B) of the second contactor and the coil-end (KT1A) of very first time relay; First voltage relay group (1FV1 ~ 1FV3) connects one end of the auxiliary contact (KM2B) of the second contactor, and auxiliary contact (KM2B) other end of the second contactor connects the coil-end (KT1A) of very first time relay; The coil power harvester of described first voltage relay group (1FV1 ~ 1FV3) is separately positioned on every phase electric wire of the first service entrance switch (QF1) lower end;
Second road circuit of described first parallel circuits (1) comprises the timing closing contact (KT1B) of very first time relay and first auxiliary contact (KM1B) of the first contactor, connects with first auxiliary contact (KM1B) of the first contactor in the timing closing contact (KT1B) of very first time relay;
3rd road circuit of described first parallel circuits (1) comprises the second auxiliary contact (KM1C) and first signal lamp (HL1) of the first contactor, and second auxiliary contact (KM1C) of the first contactor are connected with the first signal lamp (HL1);
Three-phase inlet wire (the A2 of described second road electric power incoming line part, B2, C2) connect one end of the second service entrance switch (QF2), the other end of the second service entrance switch (QF2) connects the main contacts (KM2A) of the second contactor; The 5th pin and first pin of change over switch (SA) is connected between the main contacts (KM2A) of the second service entrance switch (QF2) and the second contactor; Second rotary switch combination (SB2-SB2 ') be connected between change over switch (SA) and the second parallel circuits (2), described second parallel circuits (2) comprises three tunnels circuit in parallel mutually;
The first via of described second parallel circuits (2) comprises the second voltage relay group (2FV1 ~ 2FV3), the auxiliary contact (KM1B) of the first contactor and the coil-end (KT2A) of second time relay; Second voltage relay group (2FV1 ~ 2FV3) connects one end of the auxiliary contact (KM2B) of the second contactor, and auxiliary contact (KM2B) other end of the second contactor connects the coil-end (KT2A) of second time relay; The coil power harvester of described second voltage relay group (1FV1 ~ 1FV3) is separately positioned on every phase electric wire of the second service entrance switch (QF2) lower end;
Second road circuit of described second parallel circuits (2) comprises the timing closing contact (KT2B) of second time relay and first auxiliary contact (KM2B) of the second contactor, connects with first auxiliary contact (KM2B) of the second contactor in the timing closing contact (KT2B) of second time relay;
3rd road circuit of described second parallel circuits (2) comprises the second auxiliary contact (KM2C) and the secondary signal lamp (HL2) of the first contactor, and second auxiliary contact (KM2C) of the second contactor are connected with secondary signal lamp (HL2).
2. double loop power supply inlet wire switching device shifter as claimed in claim 1; it is characterized in that: also comprise protection fuse (FU); described protection fuse (FU) has eight; be connected on three-phase inlet wire (A1; B1; C1, A2, B2, C2) with change over switch (SA) between, on every phase electric wire of the first voltage relay group (1FV1 ~ 1FV3) and on every phase electric wire of the second voltage relay group (2FV1 ~ 2FV3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088595.0U CN204408004U (en) | 2015-02-06 | 2015-02-06 | Double loop power supply inlet wire switching device shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088595.0U CN204408004U (en) | 2015-02-06 | 2015-02-06 | Double loop power supply inlet wire switching device shifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204408004U true CN204408004U (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520088595.0U Expired - Fee Related CN204408004U (en) | 2015-02-06 | 2015-02-06 | Double loop power supply inlet wire switching device shifter |
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| Country | Link |
|---|---|
| CN (1) | CN204408004U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048304A (en) * | 2015-08-18 | 2015-11-11 | 中山市明阳电器有限公司 | Electrical interlocking device of multi-inlet-wire multi-bus-couple low-voltage distribution system |
| CN105186314A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | Safe power distribution cabinet |
-
2015
- 2015-02-06 CN CN201520088595.0U patent/CN204408004U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048304A (en) * | 2015-08-18 | 2015-11-11 | 中山市明阳电器有限公司 | Electrical interlocking device of multi-inlet-wire multi-bus-couple low-voltage distribution system |
| CN105186314A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | Safe power distribution cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20180206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |