CN209329674U - A kind of traffic lights earth leakage protective device - Google Patents
A kind of traffic lights earth leakage protective device Download PDFInfo
- Publication number
- CN209329674U CN209329674U CN201822122418.6U CN201822122418U CN209329674U CN 209329674 U CN209329674 U CN 209329674U CN 201822122418 U CN201822122418 U CN 201822122418U CN 209329674 U CN209329674 U CN 209329674U
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- traffic lights
- alternating voltage
- current transducer
- voltage current
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Abstract
The utility model discloses a kind of traffic lights earth leakage protective device, including isolating transformer, Signalized control equipment and several loads, the output terminals A and output end B of the isolating transformer are connected to air switch；It further include alternating voltage current transducer, 1 one end of port of the alternating voltage current transducer is connected to air switch, other end ground line C；2 one end of port of the alternating voltage current transducer is connected to air switch, other end ground line C；The alternating voltage current transducer connects alarm controller.The circuit of the utility model can effectively improve the operation stability of traffic lights, can also and alarm security risk that may be present, making the maintenance of traffic lights becomes planned maintenance, the confusion of repairing and emergency processing caused by effectively avoiding traffic lights from having a power failure suddenly.
Description
Technical field
The utility model relates to the protection apparatus field of traffic lights, specifically a kind of traffic lights earth leakage protective dress
It sets.
Background technique
City traffic signal lamp has two at present, first is that signal lamp can be frequent if installing earth leakage protective additional
Tripping suddenly influences traffic and causes the generation of electric shock accidents second is that there are security risks if withouyt leakage switch.
Utility model content
For the defect for solving the above-mentioned prior art, the utility model provides a kind of traffic lights earth leakage protective device, this
The circuit of utility model can effectively improve the operation stability of traffic lights, moreover it is possible to and alarm safety that may be present is hidden
Suffer from, make traffic lights maintenance become planned maintenance, caused by effectively avoiding traffic lights from having a power failure suddenly repair and
The confusion of emergency processing.
To realize the above-mentioned technical purpose, the utility model adopts the following technical solution: a kind of traffic lights earth leakage protective
Device, including isolating transformer, Signalized control equipment and several loads, the output terminals A and output of the isolating transformer
End B is connected to air switch；
It further include alternating voltage current transducer, 1 one end of port of the alternating voltage current transducer is connected to air
Switch, another termination PE line；2 one end of port of the alternating voltage current transducer is connected to air switch, another termination PE
Line；
The alternating voltage current transducer connects alarm controller.
Preferably, the output terminals A is connected to alternating voltage current transducer and alarm controller, institute by fuse one
It states output end B and alternating voltage current transducer and alarm controller is connected to by fuse two.
Preferably, the port 3 of the alternating voltage current transducer is connected with current transformer.
Preferably, the alarm controller is alarmed using GPRS remote collection.
A kind of traffic lights earth leakage protecting method, comprising the following steps:
The current value of port 3 is detected, while detecting the voltage value of port 1 and port 2, if detecting port 1 or end
2 either ends of mouth have voltage, alarm then alternating voltage current transducer send voltage signal to alarm controller.
If detecting that the current value of port 3 increases suddenly, illustrates output terminals A and output end B while ground connection event occur
Barrier or load short circuits failure；If detecting that there is voltage in port 1, illustrate that ground fault occurs in output end B；If detecting end
Mouth 2 has voltage, then illustrates that ground fault occurs in output terminals A.
In conclusion the utility model achieves following technical effect:
In the utility model circuit when output terminals A and output end B are while connecting PE line because of fault ground simultaneously, circuit
Electric current can increase suddenly, cause air switch power-off protection, not will cause personnel's electric shock.When output terminals A because fault ground i.e. with
When PE line connects, then lamp stand and the earth and output terminals A are equipotentials, and personnel, which touch lamp stand, does not have potential difference, not will form electricity
It flows back to road and electric shock accidents occurs.When mono- fault ground of output end B is connect with PE line, then lamp stand and the earth are equal with output end B
It is equipotential, personnel, which touch lamp stand, does not have potential difference, not will form current loop equally and electric shock accidents occurs.The utility model
Circuit can effectively improve the operation stability of traffic lights, moreover it is possible to and alarm security risk that may be present, believe traffic
The maintenance of signal lamp becomes planned maintenance, and repairing and emergency processing caused by effectively avoiding traffic lights from having a power failure suddenly mix
Unrest.
Detailed description of the invention
Fig. 1 is the utility model circuit diagram；
In figure, 1, isolating transformer, 2, air switch, 3, fuse two, 4, fuse one, 5, current transformer, 6, friendship
Galvanic electricity piezoelectricity flow transmitter, 7, alarm controller, 8, Signalized control equipment, 9, load.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Embodiment:
As shown in Figure 1, a kind of traffic lights earth leakage protective device, including isolating transformer 1, Signalized control equipment 8
And several loads 9, the output terminals A and output end B of isolating transformer 1 are connected to air switch 2；
It further include alternating voltage current transducer 6,1 one end of port of alternating voltage current transducer 6 is connected to air and opens
Close 2, another termination PE line；2 one end of port of alternating voltage current transducer 6 is connected to air switch 2, another termination PE line；
Alternating voltage current transducer 6 connects alarm controller 7.
Output terminals A is connected to alternating voltage current transducer 6 and alarm controller 7 by fuse 1, and output end B is logical
It crosses fuse 23 and is connected to alternating voltage current transducer 6 and alarm controller 7, be alternating voltage current transducer 6 and alarm
Controller 7 provides power supply.
The port 3 of alternating voltage current transducer 6 is connected with current transformer 5.
Alarm controller 7 is alarmed using GPRS remote collection.
Traffic lights earth leakage protecting method, comprising the following steps:
The current value of port 3 is detected, while detecting the voltage value of port 1 and port 2, if detecting port 1 or end
2 either ends of mouth have voltage, alarm then alternating voltage current transducer 6 send voltage signal to alarm controller 7.
If detecting that the current value of port 3 increases suddenly, illustrates output terminals A and output end B while ground connection event occur
Barrier or load short circuits failure；If detecting that there is voltage in port 1, illustrate that ground fault occurs in output end B；If detecting end
Mouth 2 has voltage, then illustrates that ground fault occurs in output terminals A.
Because traffic lights power is smaller, and in outdoor application, therefore passes through 220V through earth leakage protective after alternating current introducing and become
220V isolating transformer 1 provides power supply to traffic lights.Because isolation electrical isolation act on, earth leakage protective only to power supply into
Line and isolating transformer 1 shield, not related with the load after being isolated, therefore a possibility that earth leakage protective tripping power-off
It substantially reduces.
As shown in Figure 1, the traffic signals lamp load 9 of 1 secondary side of isolating transformer is likewise supplied with ground connection collection and PE line, at this time
220V voltage is sent through output terminals A, output end B to equipment, and when outlet ground fault, there are three types of states: (1) output terminals A, output
End B is grounded simultaneously to be connected with PE line；(2) output terminals A is connected with PE line；(3) output end B and PE line is connected.
(1) output terminals A, output end B are grounded are connected with PE line simultaneously, i.e. output terminals A, output end B simultaneous faults, then line
Electric current can increase suddenly in road, cause air switch power-off protection, not will cause personnel's electric shock.
(2) output terminals A is connected with PE line, i.e. output terminals A failure, then lamp stand and the earth and output terminals A equipotential, i.e., defeated
Outlet A and PE line equipotential, when human contact's lamp stand, do not have potential difference, not will form current loop, electric shock accidents will not occur.
(3) output end B and PE line is connected, i.e. output end B failure, then lamp stand and the earth and output end B equipotential, i.e., defeated
Outlet B and PE line equipotential, when human contact's lamp stand, do not have potential difference, not will form current loop, electric shock accidents will not occur.
Under normal circumstances, the voltage value of the port 1 and port 2 of alternating voltage current transducer 6 be 0, if output terminals A with
PE line is connected, the voltage between the voltage, that is, output terminals A and PE line of port 1 be 0, at this point, the voltage of port 2, that is, output end B with
It is 220V that voltage between PE line, which is equal to the voltage between output end B and output terminals A,.Similarly, if output end B and PE line phase
Connection, the voltage of port 2 are 0, and 1 voltage of port is 220V.When detect port 1 and port 2 either one have voltage when, voltage letter
It number send through alternating voltage current transducer 6 to alarm controller 7, is read by APP software, be timely fed back to administrative staff, and
When arrange maintenance.
In the utility model circuit when output terminals A and output end B are while connecting PE line because of fault ground simultaneously, circuit
Electric current can increase suddenly, cause 2 power-off protection of air switch, not will cause personnel's electric shock.When output terminals A because fault ground i.e. with
When PE line connects, then lamp stand and the earth and output terminals A are equipotentials, and personnel, which touch lamp stand, does not have potential difference, not will form electricity
It flows back to road and electric shock accidents occurs.When mono- fault ground of output end B is connect with PE line, then lamp stand and the earth are equal with output end B
It is equipotential, personnel, which touch lamp stand, does not have potential difference, not will form current loop equally and electric shock accidents occurs.The utility model
Circuit can effectively improve the operation stability of traffic lights, moreover it is possible to and alarm security risk that may be present, believe traffic
The maintenance of signal lamp becomes planned maintenance, and repairing and emergency processing caused by effectively avoiding traffic lights from having a power failure suddenly mix
Unrest.
The above is only the better embodiment to the utility model, not makees any form to the utility model
On limitation, all according to the technical essence of the utility model any simple modification made to the above embodiment, equivalent variations
With modification, it is all within the scope of the technical scheme of the utility model.
Claims (4)
1. a kind of traffic lights earth leakage protective device, including isolating transformer (1), Signalized control equipment (8) and several
It loads (9), it is characterised in that: the output terminals A and output end B of the isolating transformer (1) are connected to air switch (2)；
It further include alternating voltage current transducer (6), 1 one end of port of the alternating voltage current transducer (6) is connected to sky
Air cock (2), the other end are grounded C；2 one end of port of the alternating voltage current transducer (6) is connected to air switch
(2), the other end is grounded C；
The alternating voltage current transducer (6) connects alarm controller (7).
2. a kind of traffic lights earth leakage protective device according to claim 1, it is characterised in that: the output terminals A is logical
It crosses fuse one (4) and is connected to alternating voltage current transducer (6) and alarm controller (7), the output end B passes through fuse
Two (3) are connected to alternating voltage current transducer (6) and alarm controller (7).
3. a kind of traffic lights earth leakage protective device according to claim 1, it is characterised in that: the alternating current piezoelectricity
The port 3 of flow transmitter (6) is connected with current transformer (5).
4. a kind of traffic lights earth leakage protective device according to claim 1, it is characterised in that: the alarm controller
(7) it is alarmed using GPRS remote collection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822122418.6U CN209329674U (en) | 2018-12-17 | 2018-12-17 | A kind of traffic lights earth leakage protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822122418.6U CN209329674U (en) | 2018-12-17 | 2018-12-17 | A kind of traffic lights earth leakage protective device |
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| Publication Number | Publication Date |
|---|---|
| CN209329674U true CN209329674U (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822122418.6U Active CN209329674U (en) | 2018-12-17 | 2018-12-17 | A kind of traffic lights earth leakage protective device |
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| CN (1) | CN209329674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449879A (en) * | 2018-12-17 | 2019-03-08 | 陈军 | A kind of traffic lights earth leakage protective device and its method |
-
2018
- 2018-12-17 CN CN201822122418.6U patent/CN209329674U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449879A (en) * | 2018-12-17 | 2019-03-08 | 陈军 | A kind of traffic lights earth leakage protective device and its method |
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