CN2064123U - Auto-controlled fixed phase-sequence converter - Google Patents
Auto-controlled fixed phase-sequence converter Download PDFInfo
- Publication number
- CN2064123U CN2064123U CN 89206404 CN89206404U CN2064123U CN 2064123 U CN2064123 U CN 2064123U CN 89206404 CN89206404 CN 89206404 CN 89206404 U CN89206404 U CN 89206404U CN 2064123 U CN2064123 U CN 2064123U
- Authority
- CN
- China
- Prior art keywords
- resistance
- common port
- relay
- circuit
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Power Conversion In General (AREA)
Abstract
The utility model relates to a phase sequence converting device, being composed of a phase sequence judged circuit, an isolating rectifying circuit, a switch circuit, an auto-controlled converting circuit, a power supply and a display circuit. The utility model is suitable for the electrical equipment with the input power supply which is three phase 380 volt electric pressure, working normally with the condition of the stationary sequence of ABC. The device can automatically convert the input power supply into the output power supply of ABC stationary phase sequence, and at the same time, the device can automatically cut the power supply to protect load when the power supply lacks phase or the electric pressure is lower than 340 volt.
Description
The utility model relates to a kind of phase sequence conversion equipment, is applicable to that the input power supply is 380 volts of three-phases and must be by the fixing electric equipment that can work of ordering of ABC.
At present, some electric equipment requires to import power supply in use to be 380 volts of three-phases and must to arrange by fixing phase sequence, and usual way is after trying out earlier the phase sequence of power supply, to insert electric equipment again, thereby brings many inconvenience to work.
The purpose of this utility model is to provide a kind of automatic phase sequence conversion equipment, no matter the input power phase how, all can convert fixedly phase sequence output to automatically, makes the electric equipment operate as normal.
Characteristics of the present utility model are to judge earlier the phase sequence of power supply, and the phase sequence of getting is wherein judged voltage, by the isolation rectification circuit through the control transformation circuit; realize automatic commutation effect; when power supply phase shortage or voltage were lower than 340 volts, this machine was cut off the electricity supply automatically, for load provides protection simultaneously.
Fig. 1, be block diagram of the present utility model.
Fig. 2, be circuit theory diagrams of the present utility model.
Fig. 3, be housing of the present utility model
The utility model is made up of housing, sequence judging circuit, isolation rectification circuit, switching circuit, control transformation circuit, power display circuit etc.Wherein, housing is that the upper left quarter of its panel of rectangular box (Fig. 3) is equipped with indicator light HL in proper order
1, HL
2, HL
3, right lower quadrant is equipped with two button KA
1, KA
2(be the relay K A in the switching circuit
1, KA
2Contact switch) two three-phase socket S are equipped with in the left side of housing
1, S
2, S
1Be input power supply (U, V, W) socket, S
2Be out-put supply (U
1, V
1, W
1) socket, in addition wherein sequence judging circuit by resistance R
1, R
2, capacitor C
1Form.Resistance R
1, R
2, capacitor C
1An end link its common port and transformer B respectively with power supply U, V, W three
1Input connect, from resistance R
1On the phase sequence that obtains judge that voltage shows the regurgitation of phase sequence, the size of resistance, electric capacity is relevant in its size and civil power phase sequence and the circuit, positive greatly, little is anti-phase.The isolation rectification circuit is by transformer B
1, bridge rectifier ZL, capacitor C
2, C
3, resistance R
3Form, wherein transformer B
1The input of output termination bridge rectifier ZL, capacitor C
3Through resistance R
3And capacitor C
3Distinguish cross-over connection in the output of bridge rectifier ZL, variable resistor R
3Be serially connected with capacitor C
2, C
3In the loop.By triode G
1, G
2, G
3, resistance R
4-R
10, diode D
1, D
2And relay K A
1, KA
2Form switching circuit, wherein resistance R
4, R
6, relay K A
2Respectively with triode G
1, G
2, G
3Collector electrode connect relay K A
1An end and triode G
1Emitter connect diode D
1And resistance R
8Common port C through resistance R
7, diode D
2And resistance R
10Common port E through resistance R
9Respectively with triode G
2, G
3Base stage link to each other resistance R
5, R
6Common port F and relay K A
2An end respectively with triode G
2, G
3Collector electrode link to each other resistance R
5The other end be connected to triode G
1Base stage, resistance R
4, R
6, diode D
1, D
2, relay K A
2Common port A, resistance R
8, R
10, relay K A
1Common port B be connected to capacitor C in the isolation rectification circuit respectively
2Two ends.The control transformation circuit is by A.C. contactor KM
1, KM
2Form, wherein A.C. contactor KM
1, KM
2The control winding respectively with relay K A
1, KA
2The contact link to each other A.C. contactor KM
1, KM
2Common port, relay K A
1, KA
2Common port be connected to power supply U, W phase, A.C. contactor KM respectively
1The control contact is serially connected with U U
1, VV
1, WW
1Three-way, A.C. contactor KM
2The control contact be serially connected with UV
1, VU
1, WW
1Three-way, indicator light HL
1, HL
2, HL
3Common port be connected to the ground wire N of power supply, the other end is connected to U, V, the W three-phase of power supply respectively, selects for use neon tube with being indicator light.
Claims (2)
1, a kind of phase sequence transducer, by housing, sequence judging circuit, buffer circuit, switching circuit are formed, and it is characterized in that:
A. housing is a rectangular box, and the upper left quarter of its panel is equipped with indicator light HL
1, HL
2, HL
3, right lower quadrant is equipped with two button KA
1, KA
2, two three-phase socket S are equipped with in the left side of housing
1, S
2,
B, sequence judging circuit are made up of resistance R 1, R2, capacitor C 1, and wherein an end of resistance R 1, R2 capacitor C 1 links with power supply U, V, W three respectively, and its common port connects with the input of transformer B1,
C, isolation rectification circuit are made up of transformation B1, bridge rectifier ZL, capacitor C 2, C3, resistance R 3, the input of the output termination bridge rectifier ZL of transformer B1 wherein, capacitor C 3 through resistance R 3 and capacitor C 2 respectively cross-over connections in the output of bridge rectifier ZL,
D, switching circuit is by triode G1, G2, G3, diode D1, D2 and relay K A1, KA2 forms, wherein resistance R 4, R6, relay K A2 is respectively at triode G1, G2, the collector electrode of G3 connects, the end of relay K A1 links to each other with the emitter of triode G1, the common port C of diode D1 and resistance R 8 links to each other through the base stage of resistance R 7 with triode G2, the common port E of diode D2 resistance R 10 links to each other through the base stage of resistance R 9 with triode G3, resistance R 5, the common port F of R6 and the end of relay K A2 respectively with triode G2, the collector electrode of G3 links to each other, the other end of resistance R 5 is connected to the base stage of triode G1, resistance R 4, R6, diode D1, D2, the common port A of relay K A2, resistance R 8, R10, the common port B of relay K A1 is capacitor C 2 two ends of cross-over connection in the isolation rectification circuit respectively
E, control transformation circuit are made up of A.C. contactor KM1, KM2, wherein the control winding of A.C. contactor KM1, KM2 links to each other with the contact of relay K A1, KA2 respectively, the common port of A.C. contactor KM1, KM2, the common port of relay K A1, KA2 is connected to power supply U, W phase respectively, A.C. contactor KM1 control is serially connected with three-way of UU1, VV1, WW1 around the contact, and the control contact of A.C. contactor KM2 is serially connected with three-way of UV1, VU1, WW1.
2, phase sequence transducer according to claim 1 is characterized in that also having a current display circuit, wherein indicator light HL
1, HL
2, HL
3Common port and ground wire N join, the other end is connected to electric current U, V, W three-phase respectively, indicator light is selected neon tube for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206404 CN2064123U (en) | 1989-04-26 | 1989-04-26 | Auto-controlled fixed phase-sequence converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89206404 CN2064123U (en) | 1989-04-26 | 1989-04-26 | Auto-controlled fixed phase-sequence converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2064123U true CN2064123U (en) | 1990-10-17 |
Family
ID=4863455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89206404 Withdrawn CN2064123U (en) | 1989-04-26 | 1989-04-26 | Auto-controlled fixed phase-sequence converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2064123U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196531B (en) * | 2006-12-05 | 2011-11-09 | 天津市松正电动汽车技术股份有限公司 | Velocity display circuit of electric car |
| CN102638037A (en) * | 2012-03-16 | 2012-08-15 | 华为技术有限公司 | Power supply control method and power supply control system of communication equipment as well as power supply system |
| CN101651346B (en) * | 2009-09-23 | 2013-01-02 | 华为技术有限公司 | Multi-phase power supply device and method |
-
1989
- 1989-04-26 CN CN 89206404 patent/CN2064123U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196531B (en) * | 2006-12-05 | 2011-11-09 | 天津市松正电动汽车技术股份有限公司 | Velocity display circuit of electric car |
| CN101651346B (en) * | 2009-09-23 | 2013-01-02 | 华为技术有限公司 | Multi-phase power supply device and method |
| CN102638037A (en) * | 2012-03-16 | 2012-08-15 | 华为技术有限公司 | Power supply control method and power supply control system of communication equipment as well as power supply system |
| CN102638037B (en) * | 2012-03-16 | 2016-03-30 | 华为技术有限公司 | The method for controlling power supply of communication equipment, system and electric power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |