CN205407076U - Drawer cubical switchboard protection device and drawer cubical switchboard - Google Patents
Drawer cubical switchboard protection device and drawer cubical switchboard Download PDFInfo
- Publication number
- CN205407076U CN205407076U CN201620227797.3U CN201620227797U CN205407076U CN 205407076 U CN205407076 U CN 205407076U CN 201620227797 U CN201620227797 U CN 201620227797U CN 205407076 U CN205407076 U CN 205407076U
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- China
- Prior art keywords
- drawer
- closed contact
- power switch
- utility
- model
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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.)
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Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Abstract
The utility model relates to a control field discloses a drawer cubical switchboard protection device and drawer cubical switchboard. Wherein, the drawer cubical switchboard includes main power switch and the main contactor who has supplementary normally closed contact, and this protection device includes: a control unit, with main power switch's supplementary normally closed contact connects control main contactor separating brake disconnection under the condition of supplementary normally closed contact disconnection. Through using the utility model provides a for example, drawer cubical switchboard protection device, main contactor is jumped so that the disconnection of main contactor separating brake to the condition second line of a couplet of can trip at main power switch (appear short circuit, ground connection in the electric loop, overflow, lack equal trouble) to ensure the security of electric loop.
Description
Technical field
This utility model relates to control field, in particular it relates to a kind of drawer of switch cabinet protection device and drawer of switch cabinet.
Background technology
In state's Hua Cang electricity #3 machine steam turbine cosmetic board house, denseer flue gas once occurred, upon examination it is found that reason flue gas occur is that two induced-draft fans of main fuel tank are in stoppage in transit state, but find that main fuel tank 31 smoke exhaust fan motor dcs (DCS) still shows operation simultaneously, electrical source of power switch (can also be called main power switch) in the drawer of switch cabinet (such as, 380V drawer of switch cabinet) that this equipment of inspection on the scene connects is in disconnection position, controls loop A.C. contactor still in adhesive position.
Accordingly, it would be desirable to a kind of device electrical source of power switch trip can protected, to avoid similar devices loop in unit that same problem occurs, and ensure time breaking down in this kind equipment loop that can realize the connection of stand-by equipment in the very first time opens.
Utility model content
The purpose of this utility model is to provide a kind of drawer of switch cabinet protection device and drawer of switch cabinet, to solve above-mentioned the problems of the prior art.
To achieve these goals; this utility model provides a kind of drawer of switch cabinet protection device; described drawer of switch cabinet includes main power switch and the main contactor with auxiliary normally-closed contact; wherein; this device includes: the first control unit; it is connected with the auxiliary normally-closed contact of described main power switch, controls main contactor separating brake when described auxiliary normally-closed contact disconnects and disconnect.
Preferably, this device also includes the second control unit, is connected with the auxiliary normally-closed contact of described main power switch, controls stand-by equipment when described auxiliary normally-closed contact disconnects and enables.
Preferably, described first control unit is additionally operable to controlling output alarm signal while described main contactor separating brake disconnects.
Preferably, this device also includes display unit, is connected with described first control unit, for according to described alarm signal display alarm information.
Preferably, this device also includes auditory tone cues unit, for sending alarm sound according to described alarm signal.
Preferably, this device also includes luminous prompting unit, for sending alarm light according to described alarm signal.
This utility model additionally provides a kind of drawer of switch cabinet, including above-mentioned drawer of switch cabinet protection device.
Pass through technique scheme, by the auxiliary normally-closed contact of the main power switch included by drawer of switch cabinet is connected to described first control unit, thus the first control unit can control main contactor according to the state of main power switch, so that trip (such as at main power switch, electric loop occurs short circuit, ground connection, crosses what the fault such as stream, phase shortage caused) situation second line of a couplet jumping main contactor so that the disconnection of main contactor separating brake, to guarantee the safety of electric loop.
Other features and advantages of the utility model will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, but is not intended that restriction of the present utility model together with detailed description below.In the accompanying drawings:
Fig. 1 is the schematic diagram of the drawer of switch cabinet protection device according to a kind of embodiment of this utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains this utility model, it is not limited to this utility model.
Fig. 1 is the schematic diagram of the drawer of switch cabinet protection device according to a kind of embodiment of this utility model.Wherein, described drawer of switch cabinet includes having the main power switch 10 assisting normally-closed contact and main contactor 20.
As shown in Figure 1; the drawer of switch cabinet protection device that a kind of embodiment of this utility model provides includes: the first control unit 30; it is connected with the auxiliary normally-closed contact of described main power switch 10, controls main contactor separating brake when described auxiliary normally-closed contact disconnects and disconnect.
It is, main contactor 20 jumped by described first control unit 30 connection when receiving the signal representing the tripping operation of described main power switch 10.
Wherein, main contactor 20 can be A.C. contactor.
By the auxiliary normally-closed contact of the main power switch included by drawer of switch cabinet is connected to described first control unit, thus the first control unit can control main contactor according to the state of main power switch, so that trip (such as at main power switch, electric loop occurs short circuit, ground connection, crosses what the fault such as stream, phase shortage caused) situation second line of a couplet jumping main contactor so that the disconnection of main contactor separating brake, to guarantee the safety of electric loop.
Wherein, described main power switch 10 and described main contactor 20 are all configured to a part for power switching circuitry.Additionally, power switching circuitry also includes control on and off switch.In this power switching circuitry, main power source is all independently taken from 380V bus section, busbar section with controlling power supply.Main power source three-phase takes from 380V bus A, B, C three-phase, delivers to motor apparatus through main power switch, A.C. contactor.Controlling power supply, to take from 380V bus A, B biphase, under normal circumstances through controlling on and off switch, motor controller realizes the divide-shut brake of A.C. contactor and controls.
Additionally, for the first control unit 30, it can be programmable logic controller (PLC).
According to this utility model one embodiment, this device can also include the second control unit 40, is connected with the auxiliary normally-closed contact of described main power switch 10, controls stand-by equipment when described auxiliary normally-closed contact disconnects and enables.
Thus, it is possible to very first time interlocking enables stand-by equipment when electric loop breaks down, it is ensured that the normal operation of using electricity system and safety.
Wherein, the second control unit 40 can be dcs (DCS).
Additionally, in this power switching circuitry, it is possible to receive the separating brake command information of DCS, reclosing command information etc., and power switching circuitry can feed back corresponding information to DCS.
According to this utility model one embodiment, described first control unit 30 can be also used for controlling output alarm signal while described main contactor 20 separating brake disconnects.
Thus, it is possible to connection jump main contactor 20 be simultaneously emitted by represent the alarm signal that described main power switch 10 disconnects, to send alarm to operator.
According to this utility model one embodiment, this device can also include display unit, is connected with described first control unit 30, for according to described alarm signal display alarm information.
Shown prompt messages such as can disconnect for described main power switch 10/trip.By display unit, prompt messages is displayed, it is possible to more directly perceived clearly to reminding operator.
Wherein, described display unit can be such as liquid crystal display, but this utility model is not limited to this.
According to this utility model one embodiment, this device can also include auditory tone cues unit, for sending alarm sound according to described alarm signal.
This auditory tone cues unit can be simultaneously emitted by alarm sound in display unit display alarm information, it is also possible to individually send alarm sound when prompt messages is not displayed by display unit.Alarm sound is sent, it is possible to when operator are inconvenient to check display unit display content or when display unit fault, send alarm to operator in time by auditory tone cues unit.
Wherein, this auditory tone cues unit such as can adopt buzzer or speaker, but this utility model is not limited to this.
According to this utility model one embodiment, this device also includes luminous prompting unit, for sending alarm light according to described alarm signal.
This luminous prompting unit can work with at least one in above-mentioned display unit and sound Tip element simultaneously, it is also possible to works independently when prompt messages is not displayed by above-mentioned display unit and auditory tone cues unit does not send alarm sound.
Wherein, this luminous prompting unit can be such as light emitting diode (LED), but this utility model is not limited to this.
In this utility model, display unit, auditory tone cues unit and luminous prompting unit can integrate with described first control unit 30, it is also possible to being configured respectively independent of described first control unit 30, this is not defined by this utility model.
This utility model one embodiment further provides a kind of drawer of switch cabinet, protects device including the drawer of switch cabinet described in above-mentioned embodiment.
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing; but; this utility model is not limited to the detail in above-mentioned embodiment; in technology concept of the present utility model; the technical solution of the utility model can being carried out multiple simple variant, these simple variant belong to protection domain of the present utility model.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode.In order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by this utility model separately.
Additionally, can also carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (7)
1. a drawer of switch cabinet protection device, described drawer of switch cabinet includes main power switch and the main contactor with auxiliary normally-closed contact, it is characterised in that this device includes:
First control unit, is connected with the auxiliary normally-closed contact of described main power switch, controls main contactor separating brake when described auxiliary normally-closed contact disconnects and disconnects.
2. device according to claim 1, it is characterised in that this device also includes the second control unit, is connected with the auxiliary normally-closed contact of described main power switch, controls stand-by equipment when described auxiliary normally-closed contact disconnects and enables.
3. device according to claim 1, it is characterised in that described first control unit is additionally operable to controlling output alarm signal while described main contactor separating brake disconnects.
4. device according to claim 3, it is characterised in that this device also includes display unit, is connected with described first control unit, for according to described alarm signal display alarm information.
5. device according to claim 4, it is characterised in that this device also includes auditory tone cues unit, for sending alarm sound according to described alarm signal.
6. device according to claim 5, it is characterised in that this device also includes luminous prompting unit, for sending alarm light according to described alarm signal.
7. a drawer of switch cabinet, it is characterised in that include the drawer of switch cabinet protection device according to any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620227797.3U CN205407076U (en) | 2016-03-23 | 2016-03-23 | Drawer cubical switchboard protection device and drawer cubical switchboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620227797.3U CN205407076U (en) | 2016-03-23 | 2016-03-23 | Drawer cubical switchboard protection device and drawer cubical switchboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205407076U true CN205407076U (en) | 2016-07-27 |
Family
ID=56423593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620227797.3U Active CN205407076U (en) | 2016-03-23 | 2016-03-23 | Drawer cubical switchboard protection device and drawer cubical switchboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205407076U (en) |
-
2016
- 2016-03-23 CN CN201620227797.3U patent/CN205407076U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |