CN207588551U - DC load switching device - Google Patents
DC load switching device Download PDFInfo
- Publication number
- CN207588551U CN207588551U CN201721579680.2U CN201721579680U CN207588551U CN 207588551 U CN207588551 U CN 207588551U CN 201721579680 U CN201721579680 U CN 201721579680U CN 207588551 U CN207588551 U CN 207588551U
- Authority
- CN
- China
- Prior art keywords
- power supply
- bus
- spdt
- pole double
- throw switch
- 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.)
- Expired - Fee Related
Links
- 230000009977 dual effect Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model is related to a kind of DC load switching devices.Including mutually independent first DC power supply and the second DC power supply, its main feature is that：Further include the first via dc bus being connect with first DC power supply, and the second road dc bus being connect with second DC power supply, and 6 to 8 power supply branches, wherein every power supply branch includes the first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT), wherein cathode of the leading-out terminal of the first single-pole double-throw switch (SPDT) as power supply branch, two ends of incoming cables of first single-pole double-throw switch (SPDT) are connect respectively by isolating diode with the cathode of first via dc bus and the second road dc bus.The utility model device can provide dual power supply protection independent mutually for single supply equipment under the premise of original two communication power supply independent operatings are not influenced, and each independent switching of load is configured independent protection device, avoids interacting.
Description
Technical field
The utility model is related to a kind of DC load switching devices.
Background technology
Stable power supply is the precondition of communication equipment stable operation, general right to promote total system safety
Between dual power supply configuration system, two sets of DC power supplies independently of each other, avoid separate unit power failure that an other power supply is caused to carry
Load simultaneously dead electricity.
But still there is part important equipment only to have single supply input, once separate unit power failure, the single electricity carried
Source device is by dead electricity.Existing direct current switching mechanism is inputted after switching device, is distributed to using input handover mechanism, two-way
Each load, once switching device failure, will cause related load dead electricity simultaneously；And existing switching device is without monitoring function, nothing
Method grasps switching device working condition.
Utility model content
The purpose of this utility model is to provide a kind of DC load switching device safer, monitoring is more perfect.
A kind of DC load switching device, it is special including mutually independent first DC power supply and the second DC power supply
Part is：Further include the first via dc bus that is connect with first DC power supply and with second DC power supply
The the second road dc bus and 6 to 8 power supply branches of connection, wherein every power supply branch includes the first single-pole double-throw switch (SPDT)
With the second single-pole double-throw switch (SPDT), wherein the leading-out terminal of the first single-pole double-throw switch (SPDT) as power supply branch cathode, first hilted broadsword
Two ends of incoming cables of commutator pass through isolating diode and the cathode of first via dc bus and the second road dc bus respectively
Connection, and anode of the leading-out terminal of second single-pole double-throw switch (SPDT) as power supply branch, two of second single-pole double-throw switch (SPDT)
Anode of the end of incoming cables respectively with first via dc bus and the second road dc bus is connect.
The utility model device can be set under the premise of original two communication power supply independent operatings are not influenced for single supply
Standby to provide dual power supply protection independent mutually, each independent switching of load is configured independent protection device, avoids interacting, and
It is configured with perfect monitoring, can find plant failure in time.
Description of the drawings
Attached drawing 1 is the circuit theory schematic diagram of the utility model.
Specific embodiment
Embodiment 1：
As shown in Figure 1, the utility model device configuring direct current busbar two-way, is respectively connected to power supply I and power supply II, two-way is female
It is independent mutually between line.The main line cathode of two-way busbar, which is respectively mounted, to be spaced apart, and each branch cathode of powering is respectively mounted isolating diode, avoids
Electric current flows into power distribution equipment or because there are anti-power transmission electric current is generated during pressure difference between two-way busbar in parallel from load.
Each power supply branch trackside is provided with two single-pole double-throw switch (SPDT)s：When being only closed any of which switch, load
Realize the single supply power supply of single channel input；When being closed two switches, load is realized is powered by the single supply that dual input is protected.
In practical application, only single supply need to be loaded access leg wire connection terminal, two skies of the power supply branch are closed by selectivity
It opens, you can selectivity realizes the single service of single supply load with reliably supplying power with double circuit.Each circuit is provided with independent cut
It changes and overcurrent protection, is provided with the monitoring of voltage and current, working condition.Each power supply branch does not influence main line, branch of respectively powering
Between be independent of each other.It can be implemented as the load of 6 to 8 tunnels and the DC power supply protected all the way while by dual input be provided respectively.
Claims (1)
1. a kind of DC load switching device exists including mutually independent first DC power supply and the second DC power supply, feature
In：It further includes the first via dc bus being connect with first DC power supply and is connect with second DC power supply
Second road dc bus and 6 to 8 power supply branches, wherein every power supply branch includes the first single-pole double-throw switch (SPDT) and second
Single-pole double-throw switch (SPDT), wherein cathode of the leading-out terminal of the first single-pole double-throw switch (SPDT) as power supply branch, first single-pole double throw are opened
Two ends of incoming cables closed are connect respectively by isolating diode with the cathode of first via dc bus and the second road dc bus, and
Anode of the leading-out terminal of second single-pole double-throw switch (SPDT) as power supply branch, two ends of incoming cables point of second single-pole double-throw switch (SPDT)
Anode not with first via dc bus and the second road dc bus is connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721579680.2U CN207588551U (en) | 2017-11-23 | 2017-11-23 | DC load switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721579680.2U CN207588551U (en) | 2017-11-23 | 2017-11-23 | DC load switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207588551U true CN207588551U (en) | 2018-07-06 |
Family
ID=62732812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721579680.2U Expired - Fee Related CN207588551U (en) | 2017-11-23 | 2017-11-23 | DC load switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207588551U (en) |
-
2017
- 2017-11-23 CN CN201721579680.2U patent/CN207588551U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180706 Termination date: 20201123 |