CN204142886U - The instrument whether a kind of low-voltage DC source inspection ground wire is removed - Google Patents
The instrument whether a kind of low-voltage DC source inspection ground wire is removed Download PDFInfo
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- CN204142886U CN204142886U CN201420681480.8U CN201420681480U CN204142886U CN 204142886 U CN204142886 U CN 204142886U CN 201420681480 U CN201420681480 U CN 201420681480U CN 204142886 U CN204142886 U CN 204142886U
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- open switch
- normal open
- relay
- direct supply
- binding post
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- 238000007689 inspection Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000000505 pernicious effect Effects 0.000 abstract description 6
- 230000009466 transformation Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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Abstract
The utility model discloses the instrument whether a kind of low-voltage DC source inspection ground wire is removed, its check circuit comprises direct supply DC1, relay J, normal open switch CK, relay J 1, binding post and external connection W; The negative pole of direct supply DC1 is connected with black binding post B with relay J, normal open switch CK successively, and the positive pole of direct supply DC1 is connected with red binding post R with relay J 1 successively; Warning circuit comprises direct supply DC2, pilot lamp L, hummer Buzzer, normal open switch CK1-CK2 and relay J 2; The positive pole of direct supply DC2 is connected with the negative pole of direct supply DC2 by pilot lamp L, normal open switch CK1, relay J 2 successively; Hummer Buzzer is in parallel with pilot lamp L, and normal open switch CK2 is in parallel with normal open switch CK1.Instrument of the present utility model, have can assist power transformation operation maintenance personnel check primary equipment whether ground connection, prevent the pernicious electric fault-operation accident, easy to carry of line combined floodgate power transmission with ground, use safety and low cost and other advantages.
Description
Technical field
The utility model relates to the instrument whether a kind of low-voltage DC source inspection ground wire is removed.
Background technology
When high-tension line or overhaul of the equipments, need the two ends installing ground wire in perform region, be used for discharging residual charge, prevent induced electricity from injuring, preventing unexpected power transmission.This life security being maintainer provides reliable technical guarantee.After service work completes, ground wire must be removed, and reinforms power transformation operation maintenance personnel power transmission afterwards.
But in real work, it is not rarely seen to have overhauled the case that rear ground wire is retained on circuit or equipment, causes the generation of the pernicious electric fault-operation accident of line combined floodgate power transmission with ground.
Utility model content
The utility model is for avoiding the weak point that exists in above-mentioned prior art, the instrument whether a kind of low-voltage DC source inspection ground wire is removed is provided so that staff can check fast primary equipment whether ground connection, prevent the pernicious electric fault-operation accident of line combined floodgate power transmission with ground.
The utility model be technical solution problem by the following technical solutions.
The instrument whether low-voltage DC source inspection ground wire is removed, its design feature comprises check circuit and warning circuit; Described check circuit comprises direct supply DC1, relay J, normal open switch CK, relay J 1, binding post and external connection W; Described binding post comprises red binding post R and black binding post B; The negative pole of described direct supply DC1 is connected with described black binding post B with relay J, normal open switch CK successively, and the positive pole of described direct supply DC1 is connected with red binding post R with relay J 1 successively; Described red binding post R and black binding post B is all connected with external connection W;
Described warning circuit comprises direct supply DC2, pilot lamp L, hummer Buzzer, normal open switch CK1, normal open switch CK2 and relay J 2;
The positive pole of described direct supply DC2 is connected with the positive pole negative pole of direct supply DC2 by pilot lamp L, normal open switch CK1, relay J 2 successively; The two ends of described hummer Buzzer are connected on the two ends of described pilot lamp L, and the two ends of described normal open switch CK2 are connected on the two ends of described normal open switch CK1.
The design feature of the instrument whether a kind of low-voltage DC source inspection ground wire of the present utility model is removed also is:
Described normal open switch CK and normal open switch CK2 all has manual switching mechanism.
Described pilot lamp L is LED.
Compared with the prior art, the utility model beneficial effect is embodied in:
The instrument whether a kind of low-voltage DC source inspection ground wire of the present utility model is removed, comprises check circuit and warning circuit; Check circuit comprises direct supply DC1, relay J, normal open switch CK, relay J 1, binding post and external connection W; The negative pole of direct supply DC1 is connected with black binding post B with relay J, normal open switch CK successively, and the positive pole of direct supply DC1 is connected with red binding post R with relay J 1 successively; Warning circuit comprises direct supply DC2, pilot lamp L, hummer Buzzer, normal open switch CK1, normal open switch CK2 and relay J 2; The positive pole of direct supply DC2 is connected with the positive pole negative pole of direct supply DC2 by pilot lamp L, normal open switch CK1, relay J 2 successively; The two ends of described hummer Buzzer are connected on the two ends of described pilot lamp L, and the two ends of described normal open switch CK2 are connected on the two ends of described normal open switch CK1.
The instrument whether a kind of low-voltage DC source inspection ground wire of the present utility model is removed, have can assist power transformation operation maintenance personnel check primary equipment whether ground connection, prevent the pernicious electric fault-operation accident, easy to carry of line combined floodgate power transmission with ground, use safety and low cost and other advantages.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the instrument whether a kind of low-voltage DC source inspection ground wire of the present utility model is removed.
Fig. 2 is the instrument ground wire installing schematic diagram when maintenance of electrical equipment whether a kind of low-voltage DC source inspection ground wire of the present utility model is removed.
Fig. 3 checks schematic diagram when being the ground wire dismounting of the instrument whether a kind of low-voltage DC source inspection ground wire of the present utility model is removed.
Fig. 4 is that the ground wire of the instrument whether a kind of low-voltage DC source inspection ground wire of the present utility model is removed checks schematic diagram when leaving over.
Below by way of embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
See accompanying drawing 1-4, the instrument whether a kind of low-voltage DC source inspection ground wire of the present utility model is removed, comprises check circuit and warning circuit; Described check circuit comprises direct supply DC1, relay J, normal open switch CK, relay J 1, binding post and external connection W; Described binding post comprises red binding post R and black binding post B; The negative pole of described direct supply DC1 is connected with described black binding post B with relay J, normal open switch CK successively, and the positive pole of described direct supply DC1 is connected with red binding post R with relay J 1 successively; Described red binding post R and black binding post B is all connected with external connection W;
Described warning circuit comprises direct supply DC2, pilot lamp L, hummer Buzzer, normal open switch CK1, normal open switch CK2 and relay J 2;
The positive pole of described direct supply DC2 is connected with the negative pole of direct supply DC2 by pilot lamp L, normal open switch CK1, relay J 2 successively; The two ends of described hummer Buzzer are connected on the two ends of described pilot lamp L, and the two ends of described normal open switch CK2 are connected on the two ends of described normal open switch CK1.
Described normal open switch CK and normal open switch CK2 all has manual switching mechanism.
Described pilot lamp L is LED.
As Figure 1-3, the instrument whether low-voltage DC source inspection ground wire of the present utility model is removed, comprises check circuit and warning circuit two parts.Check circuit is made up of direct supply DC1, relay J, normal open switch CK, relay J 1, binding post, external connection, the negative pole of direct supply DC1 is connected with relay J, normal open switch CK, black binding post B, external connection W, and the positive pole relay J 1 of direct supply DC1, red binding post R, external connection are connected; Warning circuit is made up of direct supply DC2, LED light L, hummer Buzzer, normal open switch CK1, normal open switch CK2, relay J 2, the positive pole of direct supply DC2 is connected with LED light L, normal open switch CK1, relay J 2 successively, be connected to the negative pole of direct supply DC2 afterwards, hummer Buzzer is in parallel with LED light L, and normal open switch CK2 is in parallel with normal open switch CK1.
Normal open switch CK, normal open switch CK2 have Non-follow control open and close function.
Described normal open switch CK is controlled by relay J, the normal open switch CK of manual closing can be disconnected after relay J energising, and the action after relay J energising is provided with the delay of 0.5s.
Normal open switch CK1 is controlled by relay J 1, and normal open switch CK1 can close rapidly after being energized by relay J 1, and after relay J 1 power-off, normal open switch CK1 recovers off-state.
Normal open switch CK2 is controlled by relay J 2, and normal open switch CK2 can close rapidly after being energized by relay J 2, and after relay J 2 power-off, normal open switch CK2 recovers off-state.
During concrete enforcement, black binding post B connects the external connection of black, and red binding post R connects red external connection (in accompanying drawing dotted portion), so that wiring, avoids wiring error.
Before combined floodgate power transmission, power transformation operation maintenance personnel can use on this inspect by instrument high-tension line or equipment whether left over ground wire.First black external connection is connected with the earth or grounding body, again by red external connection and high-tension line or equipment connection, now manual normal open switch CK to be closed, if high-tension line or equipment do not have ground wire (as shown in Figure 3), so check that circuit is still a dead circuit, warning circuit also can remain open.If high-tension line or equipment have left over ground wire (as Fig. 4), so check that circuit will form loop, relay J, relay J 1 are energized, normal open switch CK1 is made rapidly to close after relay J 1 is energized, normal open switch CK1 is closed makes warning circuit connect, pilot lamp is lighted, buzzer call.Now, relay J 2 is also energized, and normal open switch CK2 closes.After the time delay of 0.5s, relay J action, disconnected by the normal open switch CK of manual closing, check circuit quits work, relay J 1 power-off, and normal open switch CK1 recovers off-state.And still close due to normal open switch CK2, warning circuit will be in on-state always, until there is people manually to remove.Power transformation operation maintenance personnel can go out on high-tension line or equipment whether left over ground wire according to the reaction and judgement of LED light and hummer.Effectively can prevent the generation of the pernicious electric fault-operation accident of line combined floodgate power transmission with ground like this.
A kind of instrument whether ground wire is removed that checks of the present invention, being used for auxiliary power transformation operation maintenance personnel checks primary equipment whether ground connection, prevents the pernicious electric fault-operation accident of line combined floodgate power transmission with ground.The advantages such as this instrument has easy to carry, use safety, practical function, and technique is simple, cheap.
Above embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that the common engineering technical personnel in this area make the technical solution of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.
Claims (3)
1. with the instrument whether low-voltage DC source inspection ground wire is removed, it is characterized in that, comprise check circuit and warning circuit; Described check circuit comprises direct supply DC1, relay J, normal open switch CK, relay J 1, binding post and external connection W; Described binding post comprises red binding post R and black binding post B; The negative pole of described direct supply DC1 is connected with described black binding post B with relay J, normal open switch CK successively, and the positive pole of described direct supply DC1 is connected with red binding post R with relay J 1 successively; Described red binding post R and black binding post B is all connected with external connection W;
Described warning circuit comprises direct supply DC2, pilot lamp L, hummer Buzzer, normal open switch CK1, normal open switch CK2 and relay J 2;
The positive pole of described direct supply DC2 is connected with the negative pole of direct supply DC2 by pilot lamp L, normal open switch CK1, relay J 2 successively; The two ends of described hummer Buzzer are connected on the two ends of described pilot lamp L, and the two ends of described normal open switch CK2 are connected on the two ends of described normal open switch CK1.
2. the instrument whether removed of a kind of low-voltage DC source inspection ground wire according to claim 1, it is characterized in that, described normal open switch CK and normal open switch CK2 all has manual switching mechanism.
3. the instrument whether removed of a kind of low-voltage DC source inspection ground wire according to claim 1, it is characterized in that, described pilot lamp L is LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420681480.8U CN204142886U (en) | 2014-11-06 | 2014-11-06 | The instrument whether a kind of low-voltage DC source inspection ground wire is removed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420681480.8U CN204142886U (en) | 2014-11-06 | 2014-11-06 | The instrument whether a kind of low-voltage DC source inspection ground wire is removed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204142886U true CN204142886U (en) | 2015-02-04 |
Family
ID=52419566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420681480.8U Expired - Fee Related CN204142886U (en) | 2014-11-06 | 2014-11-06 | The instrument whether a kind of low-voltage DC source inspection ground wire is removed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204142886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238776A (en) * | 2017-05-27 | 2017-10-10 | 国网河南省电力公司平顶山供电公司 | It is a kind of to prevent detection warning device of the transformer station with safety measure power transmission |
-
2014
- 2014-11-06 CN CN201420681480.8U patent/CN204142886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238776A (en) * | 2017-05-27 | 2017-10-10 | 国网河南省电力公司平顶山供电公司 | It is a kind of to prevent detection warning device of the transformer station with safety measure power transmission |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |