CN103235229A - High-voltage indoor line grounding alarming device - Google Patents
High-voltage indoor line grounding alarming device Download PDFInfo
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- CN103235229A CN103235229A CN2013101107694A CN201310110769A CN103235229A CN 103235229 A CN103235229 A CN 103235229A CN 2013101107694 A CN2013101107694 A CN 2013101107694A CN 201310110769 A CN201310110769 A CN 201310110769A CN 103235229 A CN103235229 A CN 103235229A
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Abstract
The invention relates to a high-voltage indoor line grounding alarming device which comprises an acousto-optic circuit, voltage relays YJ1 and YJ2, a time relay SJ and a relay ZJ. Two ends of the coil of the time relay SJ and the relay ZJ are connected with a positive end and a negative end of a control power supply bus. One end of a coil of the voltage relays YJ1 and YJ2 is connected with a zero line of a to-be-detected line, and the other end of the coil is grounded. Normally open contacts Y1 and Y2 of the voltage relays YJ1 and YJ2 are in parallel and then serially connected between the time relay SJ and the power supply bus. A normally open contact S1 of the time relay SJ is serially connected between the relay ZJ and the power supply bus. Normally open contacts Z1 and Z2 of the relay ZJ are serially connected between an alarm lamp and a loudspeaker in the acousto-optic circuit and the power supply bus. By the alarming device, 24-hour unmanned online detection of a 10kV line for grounding fault can be performed, human casualty accidents can be avoided, power failure maintenance after accidents can be reduced, and labor intensity of maintaining staff is lowered.
Description
Technical field
The present invention relates to line-to-ground alarm device in a kind of hyperbaric chamber.
Background technology
10kV line-to-ground often takes place in operation of power networks in the electric system, because the 10kV system is isolated neutral system, when system's generation singlephase earth fault, the phase voltage of faulty line reduces, the phase voltage of non-fault line raise for just often doubly.When line-to-ground fault takes place, if there is the insulation thin spot, might cause this insulation thin spot breakdown in the hyperbaric chamber, may cause the switch blast when serious, cause major accident.
Summary of the invention
Line-to-ground alarm device in the hyperbaric chamber capable of automatic alarm when the object of the present invention is to provide a kind of singlephase earth fault to take place.
The object of the present invention is achieved like this: the line-to-ground alarm device comprises acousto-optic circuit in the hyperbaric chamber, voltage relay YJ1, YJ2, time relay sj, relay ZJ, time relay sj, relay ZJ coil two ends link to each other with control power source bus positive and negative terminal respectively, voltage relay YJ1, coil one end of YJ2 links to each other with circuit zero line to be measured, other end ground connection, voltage relay YJ1, the normally opened contact Y1 of YJ2, the Y2 parallel connection, be series at again between time relay sj and the power source bus, the normally opened contact S1 of time relay sj is series between relay ZJ and the power source bus, the normally opened contact Z1 of relay ZJ, Z2 is series at respectively in the acousto-optic circuit between the alarm lamp and loudspeaker and power source bus.
Owing to carry out technique scheme, the present invention not only can the minimizing accident take place and the generation accident after loss, the a large amount of negative effects that bring after can also the minimizing accident occurring, whether the unmanned online detection 10kV circuit that can fulfil 24 hours earth fault occurs, in case generation earth fault, staff in the hyperbaric chamber will obtain the acousto-optic early warning, thereby withdraws from the hyperbaric chamber rapidly, avoids the generation of human casualty accident.Also reduce the interruption maintenance maintenance job because occurring producing after the accident simultaneously, reduced service work personnel's labour intensity, saved the production cost of enterprise, improved economic benefit of enterprises.
Description of drawings: technical scheme of the present invention is provided by following drawings and Examples:
Fig. 1 is line-to-ground alarm device circuit diagram in the hyperbaric chamber.
Embodiment:
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
Embodiment: as shown in Figure 1, the line-to-ground alarm device comprises acousto-optic circuit in the hyperbaric chamber, voltage relay YJ1, YJ2, time relay sj, relay ZJ, time relay sj, relay ZJ coil two ends link to each other with control power source bus positive and negative terminal respectively, coil one end of voltage relay YJ1, YJ2 links to each other other end ground connection with circuit zero line to be measured.The normally opened contact Y1 of voltage relay YJ1, YJ2, Y2 parallel connection, be series at again between time relay sj and the power source bus, the normally opened contact S1 of time relay sj is series between relay ZJ and the power source bus, and normally opened contact Z1, the Z2 of relay ZJ is series at respectively in the acousto-optic circuit between the alarm lamp and loudspeaker and power source bus.Power source bus is provided with master switch.
Principle of work of the present invention is: when isolated neutral system breaks down, imbalance of three-phase voltage, zero line produces residual voltage with respect to ground wire in the circuit bus to be measured, voltage relay YJ1 or YJ2 action this moment, normally opened contact Y1 or Y2 closure, time relay sj is followed action, normally opened contact S1 closure, relay ZJ action, normally opened contact Z1, Z2 closure, thus start acousto-optic circuit.After treating long-time the warning, the time relay sj action, normally opened contact S1 separates, thereby makes relay ZJ action, and normally opened contact Z1, Z2 separate, and acousto-optic circuit opens circuit.
Above technical characterictic has constituted most preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease inessential technical characterictic according to actual needs, satisfies the needs of different situations.
Claims (1)
1. the line-to-ground alarm device comprises acousto-optic circuit in the hyperbaric chamber, it is characterized in that: also comprise voltage relay YJ1, YJ2, time relay sj, relay ZJ, time relay sj, relay ZJ coil two ends link to each other with control power source bus positive and negative terminal respectively, voltage relay YJ1, coil one end of YJ2 links to each other with circuit zero line to be measured, other end ground connection, voltage relay YJ1, the normally opened contact Y1 of YJ2, the Y2 parallel connection, be series at again between time relay sj and the power source bus, the normally opened contact S1 of time relay sj is series between relay ZJ and the power source bus, the normally opened contact Z1 of relay ZJ, Z2 is series at respectively in the acousto-optic circuit between the alarm lamp and loudspeaker and power source bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101107694A CN103235229A (en) | 2013-04-02 | 2013-04-02 | High-voltage indoor line grounding alarming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101107694A CN103235229A (en) | 2013-04-02 | 2013-04-02 | High-voltage indoor line grounding alarming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103235229A true CN103235229A (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101107694A Pending CN103235229A (en) | 2013-04-02 | 2013-04-02 | High-voltage indoor line grounding alarming device |
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| CN (1) | CN103235229A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06342029A (en) * | 1993-06-01 | 1994-12-13 | Toshiba Corp | Earth detector |
| CN202351363U (en) * | 2011-12-02 | 2012-07-25 | 宁夏电力公司超高压分公司 | Novel ground fault warning device |
| CN202495896U (en) * | 2012-02-26 | 2012-10-17 | 淮南万泰电子股份有限公司 | Vacuum electromagnetic starter used by coal mine fan |
| CN102868140A (en) * | 2012-09-07 | 2013-01-09 | 常熟市森源电气科技有限公司 | Overload alarming device for power transformer |
| CN202772545U (en) * | 2012-08-05 | 2013-03-06 | 江苏省矿业工程集团有限公司 | Safe power supply device for isolation transformer |
| CN203232122U (en) * | 2013-04-02 | 2013-10-09 | 国家电网公司 | Line grounding warning device in hyperbaric chamber |
-
2013
- 2013-04-02 CN CN2013101107694A patent/CN103235229A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06342029A (en) * | 1993-06-01 | 1994-12-13 | Toshiba Corp | Earth detector |
| CN202351363U (en) * | 2011-12-02 | 2012-07-25 | 宁夏电力公司超高压分公司 | Novel ground fault warning device |
| CN202495896U (en) * | 2012-02-26 | 2012-10-17 | 淮南万泰电子股份有限公司 | Vacuum electromagnetic starter used by coal mine fan |
| CN202772545U (en) * | 2012-08-05 | 2013-03-06 | 江苏省矿业工程集团有限公司 | Safe power supply device for isolation transformer |
| CN102868140A (en) * | 2012-09-07 | 2013-01-09 | 常熟市森源电气科技有限公司 | Overload alarming device for power transformer |
| CN203232122U (en) * | 2013-04-02 | 2013-10-09 | 国家电网公司 | Line grounding warning device in hyperbaric chamber |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130807 |