CN105203907A - Power electric control cabinet - Google Patents
Power electric control cabinet Download PDFInfo
- Publication number
- CN105203907A CN105203907A CN201510646285.0A CN201510646285A CN105203907A CN 105203907 A CN105203907 A CN 105203907A CN 201510646285 A CN201510646285 A CN 201510646285A CN 105203907 A CN105203907 A CN 105203907A
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- Prior art keywords
- transformer
- resistance
- photoelectrical coupler
- cabinet
- pin
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- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000010304 firing Methods 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a power electric control cabinet which comprises a cabinet body. The cabinet body is internally provided with a power firing line, a null line and a ground line, internally provided with a transformer connected with the power firing line and the null line, further internally connected with a detection ground line connected with the ground and internally provided with a detection relay and an alarm device. The ground line, the detection relay, the wiring end of the transformer and the detection ground line are sequentially connected in series for forming a detection circuit, and the wiring end of the transformer, the alarm device and a normally closed contact point of the detection relay are sequentially connected in series for forming an alarm circuit. By means of the power electric control cabinet, the ground connection situation of the electric control cabinet can be continuously detected in real time, an alarm signal can be given out under the poor ground connection situation , a clear prompt can be given to a user, and thus safe protection can be provided for the user.
Description
Technical field
The present invention relates to a kind of electric power electrical control cubicles.
Background technology
Good ground connection is safe important guarantee, and it can prevent electric leakage, electric shock accidents effectively.Be subject to raindrop erosion, air oxidation, the erosion of corrosive gas, the impact of vibrations, loosening, the inefficacy that grounding body can be caused to be electrically connected.The electrical control cubicles particularly used out of doors, is sometimes often subject to the restriction of local condition, causes the construction of grounding body to encounter difficulties.Just there is grounding body at last, existing electrical control cubicles is also cannot detect the situation of ground connection, particularly detect anywhere or anytime, cannot know whether ground connection meets the demands, with the naked eye can only observe, or with the test that multimeter carries out irregularly, once in a while, cannot meet at any time for detection, the supervision of electrical control cubicles ground state, when, wet environment bad at electric insulation, unavoidably can bring great hidden danger to safe operation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of ground connection situation that can detect electrical control cubicles in real time, incessantly, and sends the electric power electrical control cubicles of alerting signal when imperfect earth.
For solving the problems of the technologies described above, the electric power electrical control cubicles provided comprises cabinet, in cabinet, power firestreak is installed, zero line and ground wire, its design feature is: cabinet built with power firestreak, the transformer that zero line connects, the detection ground wire be connected with the earth is also connected with in cabinet, be provided with in cabinet and detect relay and warning device, ground wire, detect relay, the terminals of transformer and detect ground wire and to connect successively formation measure loop, the terminals of transformer, the normally closed contact of warning device and detection relay is sequentially connected in series formation alarm circuit.
Warning device is the signal lamp connected by signal output loop.
Signal output loop comprises the first resistance, photoelectrical coupler, the second resistance, the 3rd resistance and electric capacity, positive pole the 1st pin of the light emitting source of photoelectrical coupler connects the power output end of the first resistance to transformer, the zero line of the power input power supply of negative pole the 2nd pin connection transformer of the light emitting source of photoelectrical coupler, 3rd pin ground connection of photoelectrical coupler, 4th pin of photoelectrical coupler connects the second resistance to+5V, and the 4th pin of photoelectrical coupler is connected with signal lamp by connecting electric capacity and being connected in series the 3rd resistance.
After adopting said structure; the present invention has following good technique effect: the ground connection situation that can detect electrical control cubicles in real time, incessantly; and send alerting signal when imperfect earth, to user with clear and definite prompting, thus can provide safeguard protection to user.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated:
Fig. 1 is the structural representation of an embodiment of the present invention.
Embodiment
With reference to accompanying drawing, electric power electrical control cubicles provided by the invention, it comprises cabinet A, power firestreak 10 is installed in cabinet A, zero line 11 and ground wire 9, cabinet A built with power firestreak 10, the transformer 12 that zero line 11 connects, the detection ground wire 13 be connected with the earth is also connected with in cabinet A, be provided with in cabinet and detect relay 14 and warning device 15, ground wire 9, detect relay 14, the terminals of transformer 12 and detection ground wire 13 are connected successively and are formed measure loop, the terminals of transformer 12, the normally closed contact of warning device 15 and detection relay 14 is sequentially connected in series formation alarm circuit, in the present embodiment, warning device is the signal lamp connected by signal output loop, this signal output loop comprises the first resistance 16, photoelectrical coupler 17, second resistance 18, 3rd resistance 19 and electric capacity 20, positive pole the 1st pin of the light emitting source of photoelectrical coupler 17 connects the power output end of the first resistance to transformer, the power input of negative pole the 2nd pin connection transformer of the light emitting source of photoelectrical coupler 17, 3rd pin ground connection of photoelectrical coupler 17, 4th pin of photoelectrical coupler 17 connects the second resistance to+5V, 4th pin of photoelectrical coupler 17 is connected with signal lamp by connecting electric capacity 20 and being connected in series the 3rd resistance 16.
As shown in Figure 1, when ground wire normally connects, the power supply that voltage device 12 exports is through detecting ground wire 13, ground wire 9, detecting the measure loop that relay 14 forms ground state, detect relay 14 and obtain electric adhesive, two normally closed contacts detecting relay transfer off-state to by closure state, and alarm circuit quits work.
As shown in Figure 1, when there is abnormality in ground wire, the power supply that transformer exports is through detecting ground wire 13, electric loop can not be formed when ground wire 9 and detection relay 14, thus two normally closed contacts detecting relay 14 are in closure state, the power supply that transformer exports, warning device, detect relay and form electric loop, electric current flows through the 1st pin of resistance R40 and photoelectrical coupler U8 by power firestreak input end, the 4th pin magnitude of voltage of photoelectrical coupler U8 is caused to become low level from+5V high level, by alternating current dextrorotation waves alternation, thus generation signal exports to signal lamp, thus form warning.
The above is specific constructive form of the present invention, and the present invention is not restricted to the described embodiments, and the art personnel, replaces all in protection scope of the present invention based on the equivalent variations of concrete structure in the present invention and parts.
Claims (3)
1. an electric power electrical control cubicles, comprise cabinet, power firestreak, zero line and ground wire are installed in cabinet, it is characterized in that: cabinet is built with the transformer be connected with power firestreak, zero line, the detection ground wire be connected with the earth is also connected with in cabinet, be provided with in cabinet and detect relay and warning device, ground wire, detect relay, transformer terminals and detect ground wire and to connect successively formation measure loop, the terminals of transformer, warning device and the normally closed contact detecting relay are sequentially connected in series formation alarm circuit.
2. electric power electrical control cubicles according to claim 1, is characterized in that: described warning device is the signal lamp connected by signal output loop.
3. electric power electrical control cubicles according to claim 2, it is characterized in that: described signal output loop comprises the first resistance, photoelectrical coupler, the second resistance, the 3rd resistance and electric capacity, positive pole the 1st pin of the light emitting source of photoelectrical coupler connects the power output end of the first resistance to transformer, the power input of negative pole the 2nd pin connection transformer of the light emitting source of photoelectrical coupler, 3rd pin ground connection of photoelectrical coupler, 4th pin of photoelectrical coupler connects the second resistance to+5V, and the 4th pin of photoelectrical coupler is connected with signal lamp by connecting electric capacity and being connected in series the 3rd resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646285.0A CN105203907A (en) | 2015-10-09 | 2015-10-09 | Power electric control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646285.0A CN105203907A (en) | 2015-10-09 | 2015-10-09 | Power electric control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105203907A true CN105203907A (en) | 2015-12-30 |
Family
ID=54951689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510646285.0A Pending CN105203907A (en) | 2015-10-09 | 2015-10-09 | Power electric control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105203907A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550244A (en) * | 2018-05-22 | 2018-09-18 | 广西电网有限责任公司电力科学研究院 | A kind of safety ground monitoring alarm with multichannel |
| CN116124389A (en) * | 2023-04-19 | 2023-05-16 | 合智熔炼装备（上海）有限公司 | Crucible leakage detection pre-judging device and detection method thereof |
-
2015
- 2015-10-09 CN CN201510646285.0A patent/CN105203907A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550244A (en) * | 2018-05-22 | 2018-09-18 | 广西电网有限责任公司电力科学研究院 | A kind of safety ground monitoring alarm with multichannel |
| CN116124389A (en) * | 2023-04-19 | 2023-05-16 | 合智熔炼装备（上海）有限公司 | Crucible leakage detection pre-judging device and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |
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| WD01 | Invention patent application deemed withdrawn after publication |