CN2731812Y - Small power supply switching device - Google Patents
Small power supply switching device Download PDFInfo
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- CN2731812Y CN2731812Y CN 200420090320 CN200420090320U CN2731812Y CN 2731812 Y CN2731812 Y CN 2731812Y CN 200420090320 CN200420090320 CN 200420090320 CN 200420090320 U CN200420090320 U CN 200420090320U CN 2731812 Y CN2731812 Y CN 2731812Y
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Abstract
The utility model relates to a small-size power switching device, the circuit part is: the commercial power input is connected with electric equipment through an air switch ZK1 and an alternating current contactor KM 1; the power generation input is connected with electric equipment through an air switch ZK2 and an alternating current contactor KM 2. Voltmeters V1, V2 and V3 are connected in series between a connection node of the air switch ZK1 and the alternating current contactor KM1 and a connection node of the air switch ZK2 and the alternating current contactor KM 2; rectifier bridges ZL1, ZL2 and ZL3 are connected in series between a connection node of the air switch ZK1 and the alternating current contactor KM1 and a connection node of the air switch ZK2 and the alternating current contactor KM 2; relay coils of KA1, KA2 and KA3 are connected to the rectifier bridges ZL1, ZL2 and ZL3, respectively. The utility model has the advantages that: when the phase, frequency and voltage of three-phase alternating current are synchronous with the phase, frequency and voltage of another three-phase alternating current, the four-pole alternating current contactor is switched, and the two power supplies can be switched without clearance by utilizing the normally open and normally closed states of the alternating current contactor, so that the equipment load is in stable transition.
Description
Technical field
The utility model relates to a kind of switching device shifter, especially a kind of Miniature Power Unit switching device shifter.
Background technology
Because the our province supply of electric power is at full stretch, greatly the part cities and counties have all carried out ordered electric, under the prerequisite that ensures the people's lives electricity consumption, make the planned electricity consumption of enterprise, for guaranteeing business electrical, greatly all there has been house generator in part enterprise, power supply department has carried out standardized administration, and along with generating and generating, (the two-way plug-in strip) of generating and civil power switches, brought tremendous loss to enterprise, the enterprise that has has to stop production.
Changed once the fastest needs 15 minutes as elasticizer (POY is processed into the machinery of DTY) civil power and generating, the POY silk of the machine a large amount of waste product silk of generation that all breaks on all, waste electric power resource greatly, reduced the percentage of A-class goods, generally recovered normal need two hours, be lost in about 1,000 to 3,000 yuan, the enterprises' loss heaviness, complaints are heard everywhere for the employee, suffers untold misery, also have small-sized spinning factory, electric wire, cable factory, textile mills etc. all suffer heavy losses.
I according to around the requirement of producer and electrician's experience for many years, made the device that a generating and civil power can be changed mutually by oneself, through test of many times and improvement, its performance is safe and reliable, and is simple in structure, convenient and practical, success rate can allow several ten thousand tame enterprises retrieve economic losses very.
The utility model content
The utility model will solve the defective of above-mentioned prior art, and a kind of Miniature Power Unit switching device shifter is provided.
The utility model solves the technical scheme that its technical problem adopts.This Miniature Power Unit switching device shifter, the circuit part annexation is: the civil power input is connected with power consumption equipment by air switch ZK1, A.C. contactor KM1; The generating input is connected with power consumption equipment by air switch ZK2, A.C. contactor KM2.Be serially connected with voltmeter V1, V2 and V3 between the connected node of the connected node of air switch ZK1 and A.C. contactor KM1 and air switch ZK2 and A.C. contactor KM2; Be serially connected with rectifier bridge ZL1, ZL2 and ZL3 between the connected node of the connected node of air switch ZK1 and A.C. contactor KM1 and air switch ZK2 and A.C. contactor KM2; Rectifier bridge ZL1, ZL2 and ZL3 are connected with the relay coil of KA1, KA2 and KA3 respectively.Control circuit comprises that partly generating cuts city's electric control circuit, city's TURP generation control circuit, switches indicating circuit: a), generating cuts in city's electric control circuit, the coil of the normally-closed contact of relay K A1, KA2 and KA3, switching push button SB1, A.C. contactor KM1 is connected in series successively, A.C. contactor KM2 normally-closed contact is connected in series with indicator light L1, be connected in series a fuse RD1 after two tunnel parallel connections again and constitute a loop, wherein between A.C. contactor KM2 normally-closed contact and the indicator light L1 between node switching push button SB1, the A.C. contactor KM1 coil node be connected.B), in city's TURP generation control circuit, the coil of the normally-closed contact of relay K A1, KA2 and KA3, switching push button SB2, A.C. contactor KM2 is connected in series successively, A.C. contactor KM1 normally-closed contact is connected in series with indicator light L2, be connected in series a fuse RD2 after two tunnel parallel connections again and constitute a loop, wherein between A.C. contactor KM1 normally-closed contact and the indicator light L2 between node switching push button SB2, the A.C. contactor KM2 coil node be connected.C), switch in the indicating circuit, indicator light L2 relay, the normally-closed contact of KA1, KA2 and KA3 are connected in series formation one loop with fuse RD3.
The effect that the utility model is useful is: utilize the phase place, frequency of three-phase alternating current phase place, frequency, voltage and another three-phase alternating current, when voltage is synchronous, switch four utmost point A.C. contactors, utilize the normally-open normally-close of A.C. contactor, can close afterwards earlier and divide, accomplish that two power source conversion do not have the gap, thereby make the apparatus of load smooth transition.
Description of drawings
Fig. 1 is a circuit theory schematic diagram of the present utility model;
Fig. 2 is the utility model control circuit principle schematic;
Embodiment
Below in conjunction with drawings and Examples the utility model is described further: this Miniature Power Unit switching device shifter, the circuit part annexation is:
1), the civil power input is connected with power consumption equipment by air switch ZK1, A.C. contactor KM1; The generating input is connected with power consumption equipment by air switch ZK2, A.C. contactor KM2;
2), be serially connected with voltmeter V1, V2 and V3 between the connected node of the connected node of air switch ZK1 and A.C. contactor KM1 and air switch ZK2 and A.C. contactor KM2; Voltmeter V1, voltmeter V2, voltmeter V3 are serially connected with fuse RD4, fuse RD5, fuse RD6 respectively.Be serially connected with rectifier bridge ZL1, ZL2 and ZL3 (10A/1600V) between the connected node of the connected node of air switch ZK1 and A.C. contactor KM1 and air switch ZK2 and A.C. contactor KM2; Be serially connected with fuse RD7 on rectifier bridge ZL1, ZL2 and the ZL3 respectively, fuse RD8, fuse RD9; Rectifier bridge ZL1, ZL2 and ZL3 are connected with the relay coil of KA1, KA2 and KA3 respectively;
3), control circuit comprises that partly generating cuts city's electric control circuit, city's TURP generation control circuit, switches indicating circuit:
A), generating is cut in city's electric control circuit, the coil of the normally-closed contact of relay K A1, KA2 and KA3, switching push button SB1, A.C. contactor KM1 is connected in series successively, A.C. contactor KM2 normally-closed contact is connected in series with indicator light L1, be connected in series a fuse RD1 after two tunnel parallel connections again and constitute a loop, wherein between A.C. contactor KM2 normally-closed contact and the indicator light L1 between node switching push button SB1, the A.C. contactor KM1 coil node be connected; A.C. contactor KM1 normally opened contact is with after the shunt opening trip coil of air switch KT2 is connected in series, and being in parallel with the coil of A.C. contactor KM1 constitutes a protection loop.
B), in city's TURP generation control circuit, the coil of the normally-closed contact of relay K A1, KA2 and KA3, switching push button SB2, A.C. contactor KM2 is connected in series successively, A.C. contactor KM1 normally-closed contact is connected in series with indicator light L2, be connected in series a fuse RD2 after two tunnel parallel connections again and constitute a loop, wherein between A.C. contactor KM1 normally-closed contact and the indicator light L2 between node switching push button SB2, the A.C. contactor KM2 coil node be connected; In city's TURP generation control circuit, A.C. contactor KM2 normally opened contact is with after the shunt opening trip coil of air switch KT1 is connected in series, and being in parallel with the coil of A.C. contactor KM2 constitutes a protection loop.
C), switch in the indicating circuit, indicator light L2 relay, the normally-closed contact of KA1, KA2 and KA3 are connected in series formation one loop with fuse RD3.
Components and parts explanation among the figure: 1, RD1, RD2: fuse RT14 6A/380V; 2, KA1, KA2, KA3: relay HH64P10A/380V; 3, SB1, SB2: switching push button; 4, KM1, KM2: four utmost point A.C. contactor CT40 160A/220V; 5, KT1, KT2: air switch DZ20Y band shunt opening trip coil (3310) 225A; 6, L1, L2, L3: indicator light 220VA; 7, ZK1, ZK2: air switch DZ20Y 3310/225A; 8, V1, V2, V3: A.C. voltmeter 6L2 0-450V.
Operating procedure:
1, city's TURP generating:
Earlier generator speed is brought up to 50.5 hertz of frequencies; open the generating air switch, Table V 1, V2, V3 slowly swing up and down at this moment, indicator is down to about 50 volts; protection relay becomes release by original adhesive; it is bright to allow to switch indicator light, by cutting generator SB2 button, KM2 work; KM1 is forced to discharge; ZK1 civil power sky is opened shunt opening trip coil and is got the tripping operation of electric back, and Table V 1, V2, V3 stop swinging, handover success.Then the two-way plug-in strip of power distribution room is tangentially generated electricity the position (because of considering safety problem, illumination and other power consumption equipments do not insert switching device shifter, must be by the power distribution room branch feeding, so have only the two-way plug-in strip of the power distribution room position of tangentially generating electricity, other equipment just have.
2, civil power is cut in generating:
To throw light on earlier and the dump of other equipment; the two-way plug-in strip of power distribution room is cut the electric position to the city; illumination and other equipment get electric work; switching device shifter has also had mains supply simultaneously; the frequency of generator is adjusted to 50.5 hertz, about voltage 400V, open the civil power air switch; at this moment Table V 1; V2; V3 is slowly swing up and down; indicator is down to about 50 volts, and protection relay becomes release by original adhesive, and it is bright to allow to switch indicator light; by cutting city eletric button SB1 button; KM1 work, KM2 is forced to discharge, and ZK2 generating sky is opened shunt opening trip coil and is got the tripping operation of electric back; handover success, the operation of generation outage machine.
Claims (5)
1, a kind of Miniature Power Unit switching device shifter, it is characterized in that: the circuit part annexation is:
1), the civil power input is connected with power consumption equipment by air switch ZK1, A.C. contactor KM1; The generating input is connected with power consumption equipment by air switch ZK2, A.C. contactor KM2;
2), be serially connected with voltmeter V1, V2 and V3 between the connected node of the connected node of air switch ZK1 and A.C. contactor KM1 and air switch ZK2 and A.C. contactor KM2; Be serially connected with rectifier bridge ZL1, ZL2 and ZL3 between the connected node of the connected node of air switch ZK1 and A.C. contactor KM1 and air switch ZK2 and A.C. contactor KM2; Rectifier bridge ZL1, ZL2 and ZL3 are connected with the relay coil of KA1, KA2 and KA3 respectively;
3), control circuit comprises that partly generating cuts city's electric control circuit, city's TURP generation control circuit, switches indicating circuit:
A), generating is cut in city's electric control circuit, the coil of the normally-closed contact of relay K A1, KA2 and KA3, switching push button SB1, A.C. contactor KM1 is connected in series successively, A.C. contactor KM2 normally-closed contact is connected in series with indicator light L1, be connected in series a fuse RD1 after two tunnel parallel connections again and constitute a loop, wherein between A.C. contactor KM2 normally-closed contact and the indicator light L1 between node switching push button SB1, the A.C. contactor KM1 coil node be connected;
B), in city's TURP generation control circuit, the coil of the normally-closed contact of relay K A1, KA2 and KA3, switching push button SB2, A.C. contactor KM2 is connected in series successively, A.C. contactor KM1 normally-closed contact is connected in series with indicator light L2, be connected in series a fuse RD2 after two tunnel parallel connections again and constitute a loop, wherein between A.C. contactor KM1 normally-closed contact and the indicator light L2 between node switching push button SB2, the A.C. contactor KM2 coil node be connected;
C), switch in the indicating circuit, indicator light L2 relay, the normally-closed contact of KA1, KA2 and KA3 are connected in series formation one loop with fuse RD3.
2, Miniature Power Unit switching device shifter according to claim 1; it is characterized in that: generating is cut in city's electric control circuit; A.C. contactor KM1 normally opened contact is with after the shunt opening trip coil of air switch KT2 is connected in series, and being in parallel with the coil of A.C. contactor KM1 constitutes a protection loop.
3, Miniature Power Unit switching device shifter according to claim 1; it is characterized in that: in city's TURP generation control circuit; A.C. contactor KM2 normally opened contact is with after the shunt opening trip coil of air switch KT1 is connected in series, and being in parallel with the coil of A.C. contactor KM2 constitutes a protection loop.
4, Miniature Power Unit switching device shifter according to claim 1 is characterized in that: be serially connected with voltmeter V1, fuse RD4 between the connected node of the connected node of air switch ZK1 and A.C. contactor KM1 and air switch ZK2 and A.C. contactor KM2; Voltmeter V2, fuse RD5 and voltmeter V3, fuse RD6.
5, Miniature Power Unit switching device shifter according to claim 1 is characterized in that: be serially connected with fuse RD7 on rectifier bridge ZL1, ZL2 and the ZL3 respectively, fuse RD8, fuse RD9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420090320 CN2731812Y (en) | 2004-09-22 | 2004-09-22 | Small power supply switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420090320 CN2731812Y (en) | 2004-09-22 | 2004-09-22 | Small power supply switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731812Y true CN2731812Y (en) | 2005-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420090320 Expired - Fee Related CN2731812Y (en) | 2004-09-22 | 2004-09-22 | Small power supply switching device |
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| Country | Link |
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| CN (1) | CN2731812Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340111B (en) * | 2007-07-04 | 2010-12-01 | 中山新亚洲电业有限公司 | Uninterrupted switching system of commercial power and generated power and method thereof |
| CN117175770A (en) * | 2023-08-03 | 2023-12-05 | 国网江苏省电力有限公司南通供电分公司 | Alternating current power supply switching power supply protection assembly |
-
2004
- 2004-09-22 CN CN 200420090320 patent/CN2731812Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340111B (en) * | 2007-07-04 | 2010-12-01 | 中山新亚洲电业有限公司 | Uninterrupted switching system of commercial power and generated power and method thereof |
| CN117175770A (en) * | 2023-08-03 | 2023-12-05 | 国网江苏省电力有限公司南通供电分公司 | Alternating current power supply switching power supply protection assembly |
| CN117175770B (en) * | 2023-08-03 | 2024-03-29 | 国网江苏省电力有限公司南通供电分公司 | Alternating current power supply switching power supply protection assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |