CN201562947U - Voltage loss protecting system - Google Patents
Voltage loss protecting system Download PDFInfo
- Publication number
- CN201562947U CN201562947U CN2009202577944U CN200920257794U CN201562947U CN 201562947 U CN201562947 U CN 201562947U CN 2009202577944 U CN2009202577944 U CN 2009202577944U CN 200920257794 U CN200920257794 U CN 200920257794U CN 201562947 U CN201562947 U CN 201562947U
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- China
- Prior art keywords
- phase
- voltage
- voltage loss
- circuit breaker
- load
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a voltage loss protecting system which comprises a low-voltage distribution screen circuit breaker, wherein the low-voltage distribution screen circuit breaker is connected between a power supply and a load. The voltage loss protecting system is characterized in that the voltage loss protecting system comprises a B phase voltage loss protecting device for a B phase power supply line which is connected between the low-voltage distribution screen circuit breaker and the load. The low-voltage distribution screen circuit breaker connected between the power supply and the load can carry out voltage loss protection on A phase and C phase of the power supply, and the B phase voltage loss protecting device is used for carrying out voltage loss protection on the B phase line, therefore the voltage loss protection can be carried out on A phase, B phase and C phase, and the burning accident of the load power utilization equipment caused by the voltage loss of any phase is avoided.
Description
Technical field
The utility model relates to the power distribution protection technical field of three-phase electricity, relates in particular to a kind of o-volt protection system.
Background technology
Three-phase electricity is to use the o-volt protection system of low-voltage distribution panel circuit breaker at present; be connected in A, the C phase of primary circuit through the secondary circuit fuse; if the mains side B phase phase failure; because circuit breaker decompression coil is connected in A, C phase; the circuit breaker outage of can not tripping; will cause the load phase-deficient operation, cause a large amount of power consumption equipment burnout failures.
The utility model content
The purpose of this utility model provides a kind of o-volt protection system, can carry out loss protecting to A, B, C three-phase power line simultaneously.
A kind of o-volt protection system comprises the low-voltage distribution panel circuit breaker that is connected between power supply and the load, and wherein: this o-volt protection system also comprises a B phase no-voltage protection device, is used to be connected in the B supply line mutually between low-voltage distribution panel circuit breaker and the load.
Described o-volt protection system, wherein: described B phase no-voltage protection device comprises an auxiliary relay, and the coil of this auxiliary relay is connected between B phase, the C phase supply line, and the normal opened contact of this auxiliary relay is connected in the A phase supply line.
Described o-volt protection system, wherein: described B phase no-voltage protection device comprises an auxiliary relay, and the coil of this auxiliary relay is connected between A phase, the B phase supply line, and the normal opened contact of this auxiliary relay is connected in the A phase supply line.
The utility model adopts technique scheme will reach following technique effect:
O-volt protection of the present utility model system; be connected between power supply and the load the low-voltage distribution panel circuit breaker can to the A of power supply mutually, C carries out o-volt protection mutually; B phase no-voltage protection device can carry out o-volt protection to B phase circuit; therefore; A, B, C three-phase can both obtain o-volt protection, avoid wherein arbitrary phase decompression to cause load power consumption equipment burnout failure.
Description of drawings
Fig. 1 is the circuit structure schematic diagram of a kind of o-volt protection of the utility model system;
Fig. 2 is the circuit structure schematic diagram of the another kind of o-volt protection of the utility model system.
Embodiment
A kind of o-volt protection system comprises the low-voltage distribution panel circuit breaker that is connected between power supply and the load, and wherein: this o-volt protection system also comprises a B phase no-voltage protection device, is used to be connected in the B supply line mutually between low-voltage distribution panel circuit breaker and the load.
Fig. 1 is the circuit structure schematic diagram of a kind of o-volt protection of the utility model system, wherein, the low-voltage distribution panel circuit breaker adopts the DW Series Circuit Breakers, as circuit breaker DW15, can carry out o-volt protection mutually to A phase, C, described B phase no-voltage protection device is auxiliary relay KA, and the coil of this auxiliary relay KA is connected between B phase, the C phase supply line, and the normal opened contact KA1 of this auxiliary relay KA is serially connected in the A phase supply line; Not during phase shortage, the coil of auxiliary relay KA gets electric work to three-phase line, and normal opened contact KA1 is in attracting state, the normal electricity consumption of the power consumption equipment of load end; In case the phase failure of B phase circuit, the coil losing electricity of this auxiliary relay KA, normal opened contact KA1 disconnects, and A phase supply line does not have electricity, no longer to the power consumption equipment power supply, avoids the power consumption equipment burnout failure.
Fig. 2 is the circuit structure schematic diagram of a kind of o-volt protection of the utility model system, wherein, the low-voltage distribution panel circuit breaker adopts the DW Series Circuit Breakers, as circuit breaker DW15, can carry out o-volt protection mutually to A phase, C, described B phase no-voltage protection device is auxiliary relay KA, and the coil of this auxiliary relay KA is connected between A phase, the B phase supply line, and the normal opened contact KA1 of this auxiliary relay KA is serially connected with in the A phase supply line; Not during phase shortage, the coil of auxiliary relay KA gets electric work to three-phase line, and normal opened contact KA1 is in attracting state, the normal electricity consumption of the power consumption equipment of load end; In case the phase failure of B phase circuit, the coil losing electricity of this auxiliary relay KA, normal opened contact KA1 disconnects, and A phase supply line does not have electricity, no longer to the power consumption equipment power supply, avoids the power consumption equipment burnout failure.
Claims (3)
1. o-volt protection system; comprise the low-voltage distribution panel circuit breaker that is connected between power supply and the load; it is characterized in that: this o-volt protection system also comprises a B phase no-voltage protection device, is used to be connected in the B supply line mutually between low-voltage distribution panel circuit breaker and the load.
2. o-volt protection as claimed in claim 1 system; it is characterized in that: described B phase no-voltage protection device comprises an auxiliary relay; the coil of this auxiliary relay is connected between B phase, the C phase supply line, and the normal opened contact of this auxiliary relay is serially connected with in the A phase supply line.
3. o-volt protection as claimed in claim 1 system; it is characterized in that: described B phase no-voltage protection device comprises an auxiliary relay; the coil of this auxiliary relay is connected between A phase, the B phase supply line, and the normal opened contact of this auxiliary relay is serially connected with in the A phase supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202577944U CN201562947U (en) | 2009-11-02 | 2009-11-02 | Voltage loss protecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202577944U CN201562947U (en) | 2009-11-02 | 2009-11-02 | Voltage loss protecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562947U true CN201562947U (en) | 2010-08-25 |
Family
ID=42628096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202577944U Expired - Fee Related CN201562947U (en) | 2009-11-02 | 2009-11-02 | Voltage loss protecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562947U (en) |
-
2009
- 2009-11-02 CN CN2009202577944U patent/CN201562947U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LINGBAO JINYUAN MINING CO., LTD. Free format text: FORMER NAME: LINGBAO CITY JINYUAN MINING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 472500, Jincheng Road, Lingbao City, Henan, Sanmenxia 20 Patentee after: Lingbao Jinyuan Mining Co.,Ltd. Address before: 472500, Jincheng Road, Lingbao City, Henan Province, No. 20 Patentee before: Lingbao City Jinyuan Mining Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20181102 |