CN204497735U - Anticreep protection against electric shock automatic switching control equipment - Google Patents
Anticreep protection against electric shock automatic switching control equipment Download PDFInfo
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- CN204497735U CN204497735U CN201520159279.8U CN201520159279U CN204497735U CN 204497735 U CN204497735 U CN 204497735U CN 201520159279 U CN201520159279 U CN 201520159279U CN 204497735 U CN204497735 U CN 204497735U
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Abstract
The utility model relates to a kind of anticreep protection against electric shock automatic switching control equipment, belongs to emergency protection circuit device for electric field.The input corresponding power input A connecing three-phase mains respectively of air switch DK, power input B, power input C, with power input A, power input B, the output of the air switch that power input C and zero line N is corresponding meets the lead-out terminal A2 inhaling electric leakage device Y respectively, lead-out terminal B2, lead-out terminal C2 and zero line, inhale electric leakage device Y to be made up of circuit board OA1 and suction electrical leakage, discharge circuit OA2, the air switch DK output corresponding with power input C connects the zero line of three-phase mains after connecting with normally-closed contact ZJ21 and relay coil ZJ1, often open timing closing contact SJ1 connect with ac contactor coil CJ after and time relay coil SJ and relay coil ZJ2 form shunt circuit, one end of this shunt circuit meets power input C after connecting with normally-closed contact ZJ11, another termination of this shunt circuit inhales the zero line of electric leakage device Y, inhales the input terminal A1 of electric leakage device Y, input terminal B1, the power input A of input terminal C1 and three-phase mains, power input B, normally opened contact CJ3 is connected to respectively between power input C, normally opened contact CJ2, normally opened contact CJ1.
Description
Technical field
The utility model relates to emergency protection circuit device for electric field, is a kind of anticreep protection against electric shock automatic switching control equipment in detail.
Background technology
As everyone knows, some electric device as when street lamp, pump house, home electric etc. run in wet environment because electric wire leaks electricity, happen occasionally electric shock accidents.In order to protection against electric shock generally uses earth leakage circuit-breaker, but its first reaction of earth leakage circuit-breaker is cut off the electricity supply, and load normally cannot be worked, be secondly search leaky site, fix a breakdown a little.Now, load still cannot work.Although some electric device has ground protection line, it can only be protected and be connected to the electric of ground protection line, when being electrically flooded, leakage current can not being stoped to flow in water, therefore often electric shock accidents occurs.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of anticreep protection against electric shock automatic switching control equipment, can absorb leakage current, protection against electric shock, and load normally can also work when electricity piece is flooded.
The utility model solves the technical scheme that its technical problem adopts: a kind of anticreep anti-electric shock apparatus, be provided with air switch DK, it is characterized in that, the input corresponding power input A connecing three-phase mains respectively of air switch DK, power input B, power input C, with power input A, power input B, the output of the air switch that power input C and zero line N is corresponding meets the lead-out terminal A2 inhaling electric leakage device Y respectively, lead-out terminal B2, lead-out terminal C2 and zero line, inhale electric leakage device Y to be made up of circuit board OA1 and suction electrical leakage, discharge circuit OA2, the air switch DK output corresponding with power input C connects the zero line of three-phase mains after connecting with normally-closed contact ZJ21 and relay coil ZJ1 and normally closed timing closing contact SJ2, often open timing closing contact SJ1 connect with ac contactor coil CJ after and time relay coil SJ and relay coil ZJ2 form shunt circuit, connect with normally-closed contact ZJ11 and meet power input C after emergency stop push button TA in one end of this shunt circuit, another termination of this shunt circuit inhales the zero line of electric leakage device Y, inhale the input terminal A1 of electric leakage device Y, input terminal B1, the power input A of input terminal C1 and three-phase mains, power input B, normally opened contact CJ3 is connected to respectively between power input C, normally opened contact CJ2, normally opened contact CJ1.
The utility model also realizes by following measure: be in series with switch TA between power input C and normally-closed contact ZJ11.Normally closed timing closing contact SJ2 is in series with between relay coil ZJ1 and the zero line of three-phase mains.
Insulation board above circuit board OA1 is fixed with metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC, between the input terminal A1 of circuit board and lead-out terminal A2, between input terminal B1 and lead-out terminal B2, between input terminal C1 and lead-out terminal C2, be respectively equipped with induction end A3, induction end B3, induction end C3, induction end A3, induction end B3, induction end C3 respectively with metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC is electrically connected, metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC, resistance RA, resistance RB, resistance RC, electric capacity CA, electric capacity CB, electric capacity CC, diode DA, diode DB, diode DC forms suction electrical leakage, discharge circuit OA2 jointly, diode DA and electric capacity CA, resistance RA is in parallel, diode DB and electric capacity CB, resistance RB is in parallel, diode DC and electric capacity CC, resistance RC is in parallel, diode DA, diode DB, the negative pole of diode DC is connected with earth connection, diode DA, diode DB, the positive pole of diode DC meets metal guide electroplax KA respectively, metal guide electroplax KB, metal guide electroplax KC.
The beneficial effects of the utility model are, can absorb leakage current, protection against electric shock, and load can also normally work when electricity piece is flooded, and can give the alarm in time when input, output immersion.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the transverse sectional view of the utility model Fig. 1.
Fig. 3 is circuit theory diagrams of the present utility model.
Fig. 4 is the schematic diagram of the circuit inhaling leakage circuit Y in the utility model Fig. 3.
KA. metal guide electroplax in figure, KB. metal guide electroplax, KC. metal guide electroplax, OA1. circuit board, OA2. electrical leakage, discharge circuit is inhaled, A1. input terminal, B1. input terminal, C1. input terminal, A2. lead-out terminal, B2. lead-out terminal, C2. lead-out terminal, G. earth connection, N. zero line, RA, RB, RC. resistance, CA, CB, CC. electric capacity, DA, DB, DC. diode, ZJ1. relay coil, ZJ2. relay coil, ZJ11. normally-closed contact, ZJ21. normally-closed contact, CJ. ac contactor coil, CJ1. normally opened contact, CJ2. normally opened contact, CJ3. normally opened contact, SJ. time relay coil, SJ1. timing closing contact is often opened, SJ2. normally closed timing closing contact, TA. switch, XD. light-emitting diode, Y. electric leakage device is inhaled, DK. automatic air-break switch, A. power input, B. power input, C. power input, A3. induction end, B3. induction end, C3. induction end.
Embodiment
At Fig. 1, Fig. 2, Fig. 3, in Fig. 4, the insulation board above the utility model circuit board OA1 is fixed with metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC, between the input terminal A1 of circuit board and lead-out terminal A2, between input terminal B1 and lead-out terminal B2, between input terminal C1 and lead-out terminal C2, be respectively equipped with induction end A3, induction end B3, induction end C3, induction end A3, induction end B3, induction end C3 respectively with metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC is electrically connected, metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC, resistance RA, resistance RB, resistance RC, electric capacity CA, electric capacity CB, electric capacity CC, diode DA, diode DB, diode DC forms suction electrical leakage, discharge circuit OA2 jointly, diode DA and electric capacity CA, resistance RA is in parallel, diode DB and electric capacity CB, resistance RB is in parallel, diode DC and electric capacity CC, resistance RC is in parallel, diode DA, diode DB, the negative pole of diode DC is connected with earth connection, diode DA, diode DB, the positive pole of diode DC meets metal guide electroplax KA respectively, metal guide electroplax KB, metal guide electroplax KC.The input corresponding power input A connecing three-phase mains respectively of air switch DK, power input B, power input C, with power input A, power input B, the output of the air switch that power input C and zero line N is corresponding meets the lead-out terminal A2 inhaling electric leakage device Y respectively, lead-out terminal B2, lead-out terminal C2 and zero line, inhale electric leakage device Y and be made up of circuit board OA1 and suction electrical leakage, discharge circuit OA2, the output that air switch DK is corresponding with power input C and normally-closed contact ZJ21, relay coil ZJ1 and normally closed timing closing contact SJ2 connects the zero line of three-phase mains after connecting, often open timing closing contact SJ1 and connect with ac contactor coil CJ afterwards and time relay coil SJ, light-emitting diode XD and relay coil ZJ2 forms shunt circuit, one end of this shunt circuit and normally-closed contact ZJ11, switch TA meets power input C after connecting, and another termination of this shunt circuit inhales the zero line of electric leakage device Y, inhales the input terminal A1 of electric leakage device Y, input terminal B1, the power input A of input terminal C1 and three-phase mains, power input B, normally opened contact CJ3 is connected to respectively between power input C, normally opened contact CJ2, normally opened contact CJ1.
The utility model normally-closed contact ZJ21 is the normally-closed contact of relay ZJ2, normally-closed contact ZJ11 is the normally-closed contact of relay ZJ1, often opening timing closing contact SJ1 is the normally opened contact of time relay sj, normally closed timing closing contact SJ2 is the normally-closed contact of time relay sj, and normally opened contact CJ3, normally opened contact CJ2, normally opened contact CJ1 are the normally opened contact of A.C. contactor CJ.
The utility model is metal guide electroplax KA under peacetime state, metal guide electroplax KB, the input terminal A1 of metal guide electroplax KC and phase voltage input, input terminal B1, input terminal C1 does not form loop, as input terminal A1, input terminal B1, input terminal C1 or lead-out terminal A2, lead-out terminal B2, when lead-out terminal C2 is flooded, by the input terminal A1 of phase voltage, input terminal B1, the electric current that input terminal C1 flows out flows to lead-out terminal A2 by water, lead-out terminal B2, metal guide electroplax KA around lead-out terminal C2, metal guide electroplax KB, metal guide electroplax KC.As metal guide electroplax KA, metal guide electroplax KB, voltage rise on metal guide electroplax KC to a certain extent time, one part of current is put a little by diode DA or diode DB or diode DC through earth connection G, most current is back to output lead-out terminal A2, lead-out terminal B2, on lead-out terminal C2, the magnitude of current free in water is little, human contact is to the existence of almost imperceptible electric current during water, and now metal guide electroplax KA, metal guide electroplax KB, because there is resistance in the water between metal guide electroplax KC and output, load and water form shunt circuit, so load can also obtain normal supply voltage.When leakage current increases; the electricity that metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC store also increases; diode DA or diode DB or diode DC conducting when storing electricity and being increased to a certain degree; discharged by earth connection G; prevent leakage current increase from freeing accident, resistance RA, resistance RB, resistance RC, electric capacity CA, electric capacity CB, electric capacity CC play the effect of protection diode DA, diode DB, diode DC.
In the utility model Fig. 4, the output of air switch DK because of moist or damaged (or contact) place be flooded time, air switch DK disconnects, relay coil ZJ1 power-off.Now from the mains supply that the power input C of air switch DK accesses, by normally closed switch TA and normally-closed contact ZJ11 inlet time relay coil SJ and relay coil ZJ2, light-emitting diode XD luminous alarm simultaneously, because relay coil ZJ2 is charged, normally-closed contact ZJ21 is disconnected and ensures that relay coil ZJ1 is not charged, often open timing closing contact SJ1 after time delay a period of time to close, ac contactor coil CJ is charged, normally opened contact CJ3 in major loop, normally opened contact CJ2, normally opened contact CJ1 closes, thus suction electric leakage device Y is integrated into again in major loop, to load supply normal power source, load is worked on.
Claims (5)
1. an anticreep protection against electric shock automatic switching control equipment, be provided with air switch DK, it is characterized in that, the input corresponding power input A connecing three-phase mains respectively of air switch DK, power input B, power input C, with power input A, power input B, the output of the air switch that power input C and zero line N is corresponding meets the lead-out terminal A2 inhaling electric leakage device Y respectively, lead-out terminal B2, lead-out terminal C2 and zero line, inhale electric leakage device Y to be made up of circuit board OA1 and suction electrical leakage, discharge circuit OA2, the air switch DK output corresponding with power input C connects the zero line of three-phase mains after connecting with normally-closed contact ZJ21 and relay coil ZJ1 and normally closed timing closing contact SJ2, often open timing closing contact SJ1 connect with ac contactor coil CJ after and time relay coil SJ and relay coil ZJ2 form shunt circuit, connect with normally-closed contact ZJ11 and meet power input C after emergency stop push button TA in one end of this shunt circuit, another termination of this shunt circuit inhales the zero line of electric leakage device Y, inhale the input terminal A1 of electric leakage device Y, input terminal B1, the power input A of input terminal C1 and three-phase mains, power input B, normally opened contact CJ3 is connected to respectively between power input C, normally opened contact CJ2, normally opened contact CJ1.
2. anticreep protection against electric shock automatic switching control equipment according to claim 1, it is characterized in that the power supply of described automatic air-break switch supply, load side is because of moist or be flooded and when load cannot normally work, power supply automatically switched to Y device provisioning power supply and make load normally work.
3. anticreep protection against electric shock automatic switching control equipment according to claim 1, is characterized in that being in series with switch TA between described power input C and normally-closed contact ZJ11.
4. anticreep protection against electric shock automatic switching control equipment according to claim 1, is characterized in that being in series with normally closed timing closing contact SJ2 between described relay coil ZJ1 and the zero line of three-phase mains.
5. anticreep protection against electric shock automatic switching control equipment according to claim 1, is characterized in that the insulation board above described circuit board OA1 is fixed with metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC, between the input terminal A1 of circuit board and lead-out terminal A2, between input terminal B1 and lead-out terminal B2, between input terminal C1 and lead-out terminal C2, be respectively equipped with induction end A3, induction end B3, induction end C3, induction end A3, induction end B3, induction end C3 respectively with metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC is electrically connected, metal guide electroplax KA, metal guide electroplax KB, metal guide electroplax KC, resistance RA, resistance RB, resistance RC, electric capacity CA, electric capacity CB, electric capacity CC, diode DA, diode DB, diode DC forms suction electrical leakage, discharge circuit OA2 jointly, diode DA and electric capacity CA, resistance RA is in parallel, diode DB and electric capacity CB, resistance RB is in parallel, diode DC and electric capacity CC, resistance RC is in parallel, diode DA, diode DB, the negative pole of diode DC is connected with earth connection, diode DA, diode DB, the positive pole of diode DC meets metal guide electroplax KA respectively, metal guide electroplax KB, metal guide electroplax KC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159279.8U CN204497735U (en) | 2015-03-20 | 2015-03-20 | Anticreep protection against electric shock automatic switching control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159279.8U CN204497735U (en) | 2015-03-20 | 2015-03-20 | Anticreep protection against electric shock automatic switching control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497735U true CN204497735U (en) | 2015-07-22 |
Family
ID=53577022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520159279.8U Expired - Fee Related CN204497735U (en) | 2015-03-20 | 2015-03-20 | Anticreep protection against electric shock automatic switching control equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204497735U (en) |
-
2015
- 2015-03-20 CN CN201520159279.8U patent/CN204497735U/en not_active Expired - Fee Related
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Legal Events
| 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: 20150722 Termination date: 20190320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |