CN201508397U - A testing device of a leakage protector for a small-sized circuit breaker - Google Patents
A testing device of a leakage protector for a small-sized circuit breaker Download PDFInfo
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- CN201508397U CN201508397U CN2009202169856U CN200920216985U CN201508397U CN 201508397 U CN201508397 U CN 201508397U CN 2009202169856 U CN2009202169856 U CN 2009202169856U CN 200920216985 U CN200920216985 U CN 200920216985U CN 201508397 U CN201508397 U CN 201508397U
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- leakage current
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- relay
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Abstract
The utility model discloses a testing device of a leakage protector for a small-sized circuit breaker, which comprises: a power supply module, a control module, a leakage current generation module, and a control relay; the power supply module generates a corresponding voltage signal according to a control signal received from the control module; the leakage current generation module converts the voltage signal into a leakage current analog signal according to a loop selecting signal received from the control module, and then outputs to a product to be test via the control relay; and the control module is used for controlling the voltage signal generated by the power supply module, and controlling the leakage current generation module to generate corresponding the leakage current analog signal. The analog test to the leakage protector can be realized by adopting the embodiment of the utility model.
Description
Technical field
The utility model relates to the earth leakage protection field, particularly relates to the proving installation of a kind of miniature circuit breaker with earth leakage protective device.
Background technology
For the miniature circuit breaker in the low-voltage distribution system is equipped with earth leakage protective device is one of effective means that prevents shock hazard, also is to prevent to leak electricity to cause the technical measures of electrical fire and electrical equipment damage accident.This is in the application that has obtained in all trades and professions such as industrial, civilian more and more widely.Described earth leakage protective device is in order to directly to get an electric shock and to get an electric shock indirectly and effectively protect low voltage electric network.
The operating principle of described earth leakage protective device is: two groups are arranged, an input current winding and an output current winding on an iron core.When not having electric leakage, input current and output current equate, the vector of two magnetic fluxs and be zero on iron core; just can on the 3rd winding, not induce electromotive force, otherwise will form induced voltage on the tertiary winding, pushing executing mechanism after amplifying; make the earth leakage protective device tripping operation, play a protective role.
The inventor finds that in research process in use, some faults take place described earth leakage protective device easily: produce leaky probably, when for example its insulation course is damaged, the person is damaged; Or because of possible maloperation causes tripping operation, cause to produce and interrupt, cause damage; Or, external voltage damages electricity consumption facility etc. because of raising.Therefore before earth leakage protective device dispatches from the factory, it is carried out the leakage current simulation test seem particularly important.The general test job manual inspection leakage current that adopts in the traditional handicraft, the method detection efficiency of this manual detection is lower and have omission, a unsettled defective of quality.
Therefore, how realizing the leakage current simulation test to earth leakage protective device, guarantee the safe in utilization of earth leakage protective device, is the technical matters that those skilled in the art are badly in need of solving.
The utility model content
Technical problem to be solved in the utility model provides the proving installation of a kind of miniature circuit breaker with earth leakage protective device, can realize the leakage current simulation test to earth leakage protective device.
For solving the problems of the technologies described above, the utility model provides the proving installation of a kind of miniature circuit breaker with earth leakage protective device, and described device comprises: power module, control module, leakage current generating module and pilot relay;
Described power module produces the correspondent voltage signal according to the control signal that is received from control module;
Described leakage current generating module is selected signal according to the loop that is received from control module, and described voltage signal is converted into the leakage current simulating signal, exports product to be measured to through described pilot relay;
Described control module is used to control described power module and produces the correspondent voltage signal, controls described leakage current generating module and produces corresponding leakage current simulating signal.
Preferably, described leakage current generating module comprises at least one leakage current generating loop, and different circuit produces the leakage current of different value.
Preferably, described leakage current generating loop specifically comprises: comprise that voltage signal input end, loop select signal input part, leakage current analog signal output and relay common point;
Wherein, the voltage signal output end of the described power module of described voltage signal input termination; Signal output part is selected in the loop that its loop selects signal input part to connect described control module; Described leakage current analog signal output connects described relay module; Described relay common point is used to succeed the common zero point of electrical equipment;
Described loop comprises: adjustable potentiometer, first resistance, relay, diode, light emitting diode and second resistance;
The described voltage signal input end of one termination of described adjustable potentiometer, described first resistance of its another termination; The stiff end of the described relay contact of another termination of described first resistance, described relay contact cut-off the described leakage current analog signal output of termination; The coil of described relay is connected on described loop and selects between signal input part and the described relay common point; The coils from parallel connection of coils of described diode and described relay; The positive pole of described light emitting diode connects described loop and selects signal input part, its negative pole to connect described relay common point through described second resistance.
Preferably, the size of the leakage current simulating signal of described leakage current generating loop output is by described voltage signal, adjustable potentiometer and the decision of first resistance.
Preferably, described control module comprises:
Power control unit produces power control signal, controls described power module U10 and produces the correspondent voltage signal;
The circuit controls unit produces the loop and selects signal, controls the break-make of different circuit in the described leakage current generating module, to produce the leakage current simulating signal of different value;
Relay control unit is used to control described relay module described leakage current simulating signal is sent to product to be measured.
Preferably, described control module also comprises judging unit, is used to receive the test result that described product to be measured returns, and judges that can described product to be measured realize earth leakage protection.
Preferably, described device also comprises display, is used to show the test result of output leakage current protection.
Preferably, described device also comprises the short-circuit protection module, is connected between control module and the power module, is used for protecting described control module when described power module is short-circuited fault.
Preferably, described device also comprises the short-circuit protection module, is connected between control module and the leakage current generating module, is used for protecting described control module when described leakage current generating module is short-circuited fault.
Preferably, described device also comprises the short-circuit protection module, is connected between power module and the leakage current generating module, is used for protecting described power module when described leakage current generating module is short-circuited fault.
Compared with prior art, the utlity model has following advantage:
Proving installation described in the utility model; produce the correspondent voltage signal by control module control power module; described leakage current generating module is selected signal according to the loop that is received from control module; described voltage signal is converted into corresponding leakage current simulating signal; export product to be measured to through pilot relay, realize earth leakage protection test product to be measured.
The described device of employing present embodiment carries out the electric leakage simulation test of earth leakage protective device, the sight when electric leakage when simulated field uses fully and high pressure take place; Simultaneously, adopt described device, can realize simulation test automatically, improved production efficiency, reduce working strength of workers, helped ensureing workman's personal safety leakage current.
Description of drawings
Fig. 1 is the proving installation structural drawing of the miniature circuit breaker of the utility model embodiment with earth leakage protective device;
Fig. 2 is the circuit structure diagram of the leakage current generating module of the utility model embodiment.
Embodiment
Technical problem to be solved in the utility model provides the proving installation of a kind of miniature circuit breaker with earth leakage protective device, can realize electric leakage and overvoltage test to earth leakage protective device.
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The key of proving installation described in the utility model is how to produce the leakage current simulating signal, product to be measured (being earth leakage protective device) is simulated the earth leakage protection test.
With reference to Fig. 1, be the proving installation structural drawing of the described miniature circuit breaker of the utility model embodiment with earth leakage protective device.Described proving installation comprises: power module U10, control module U20, leakage current generating module U30 and pilot relay U40.
Described power module U10 according to the control signal that is received from control module U20, produces the correspondent voltage signal, is sent to leakage current generating module U30.
What deserves to be explained is that described power module also can be called programmable power supply, is exactly specifically, described power module U10 can produce different voltage signals under the control of control module U20.
Described leakage current generating module U30 selects signal according to the loop that is received from control module U20, and described voltage signal is converted into the leakage current simulating signal, exports pilot relay U40 to.
What deserves to be explained is that for described product to be measured is comprehensively tested, described leakage current generating module U30 need produce the leakage current simulating signal of different value, can realize protection the different value leakage current to test described product U50 to be measured.
Preferably, the described leakage current generating module of the utility model embodiment U30 comprises at least one leakage current generating loop, and different circuit can produce the leakage current of different value.When described control module U20 determine to need produces great leakage current simulating signal, send corresponding loop to described leakage current generating module U30 and select signal, control the loop of the correspondence among the described leakage current generating module U30 and connect.
Described pilot relay U40 links to each other with product U50 to be measured, is used for exporting described leakage current simulating signal to product to be measured, realizes the simulation test to product U50 to be measured.
Described control module U20 is used to realize the control action to whole device, is equivalent to control center.It is specifically as follows logic programmable controller (PLC:Programmable Logic Controller).Described control module U20 is used to control the leakage current simulating signal that described power module U10 produces correspondent voltage, the described leakage current generating module U30 generation of control different value.
Concrete, described control module U20 can comprise:
Power control unit U201 is used to produce power control signal, controls described power module U10 and produces the correspondent voltage signal;
Circuit controls unit U202 is used to produce the loop and selects signal, controls the break-make of different circuit among the described leakage current generating module U30, to produce the leakage current simulating signal of different value;
Relay control unit U203 is used to control described relay module U40 described leakage current simulating signal is sent to product U50 to be measured.
Proving installation described in the utility model; U10 produces the correspondent voltage signal by control module U20 control power module; described leakage current generating module U30 selects signal according to the loop that is received from control module U20; described voltage signal is converted into the leakage current simulating signal; export product U50 to be measured to through pilot relay U40, realize earth leakage protection test product U50 to be measured.
The described device of employing present embodiment carries out the electric leakage simulation test of earth leakage protective device, the sight when electric leakage when simulated field uses fully and high pressure take place; Simultaneously, described device can be realized the simulation test to leakage current automatically, has improved production efficiency, reduces working strength of workers, has helped ensureing workman's personal safety.
Concrete, the test process of described device is all finished automatically by equipment, the operator only needs every day at the Pretesting standard model once of starting shooting, during work product to be measured being put into test job gets final product, changing dissimilar products to be measured can finish by the man-machine interface setting, and its operating process is very simple.
In the described device of present embodiment,, guaranteed the stability of the leakage current that described leakage current generating module U30 produces by the application of programmable power module U10 cooperation control module U20; Simultaneously, owing to used the selectable leakage current generating module of multiloop U30, satisfied in the test process demand to the different value leakage current.
What deserves to be explained is, after described product U50 to be measured receives described leakage current simulating signal, carry out after the corresponding action, its test result can also be back to control module U20.Described control module U20 determines that according to the described test result that receives can described product U50 to be measured realize the leakage current protection safely.
At this moment, described control module 20 further comprises judging unit U204, is used to receive the test result that described product U50 to be measured returns, and judges that can described product U50 to be measured realize earth leakage protection.
Preferably, described proving installation can further include display U60, is used to show the test result of output leakage current protection.
Described control module 20 exports it to described display U60 after receiving the test result that described product to be measured returns, and is shown to operating personnel, is convenient to operating personnel and understands test case.
The described proving installation of the utility model embodiment may further include the short-circuit protection module, is connected in the described proving installation between each module and external power supply or between each module, is used for providing short-circuit protection to each module.
Concrete, described short-circuit protection module is connected on the module of its control action and by between the module of its control, is used for cutting off the connection between the two automatically when described Be Controlled module generation open circuit fault.The module of described its control action of protection.
For example; described leakage current generating module U30 need produce corresponding leakage current signal according to the voltage signal of described power module U10 input; at this moment; can between described power module U10 and described leakage current generating module U30, insert the short-circuit protection module; be used for when described leakage current generating module U30 is short-circuited fault; described short-circuit protection module opens circuit, and cuts off the connection between described power module U10 and the described leakage current generating module U30, protects described power module U10.In the practical application, can between described control module U20 and described leakage current generating module U30, described control module U20 and described power module U10, insert described short-circuit protection module respectively.
The purpose of the utility model embodiment is to provide a kind of proving installation of earth leakage protective device, and its key is to provide the leakage current simulating signal for described earth leakage protective device.Concrete, in the described proving installation, described leakage current simulating signal provides by described leakage current generating module U30.With reference to shown in Figure 2, be the circuit structure diagram of leakage current generating module described in the utility model.
The module of leakage current generating shown in Fig. 2 U30 comprises L1 to L8 totally 8 loops, is respectively applied for the leakage current simulating signal that produces 8 kinds of different values.Present embodiment is only Figure 2 shows that example describes, and in actual applications, the loop number that described leakage current generating module U30 comprises can specifically be determined according to actual needs.
In the utility model, 8 loops are identical on circuit structure, and difference only is the concrete value of electric elements in each loop.Therefore, be that example is elaborated to its circuit structure and principle of work only below with 1 loop wherein, other loops are all identical with it.
With the loop L1 among Fig. 2 is that example describes.Loop L1 comprises voltage signal input end S, loop selection signal input part C1, leakage current analog signal output Out and relay common point Rc.
Wherein, the voltage signal input end S in all loops all connects the voltage signal output end of described power module U10; Signal output part is selected in the loop that its loop selects signal input part C1 to meet described control module U20; Described leakage current analog signal output Out meets described relay module U40; Described relay common point Rc is used to succeed the common zero point of electrical equipment.
Described loop L1 comprises: adjustable potentiometer P1, first resistance R 1, relay K 1, diode D1, light emitting diode Led1 and second resistance R 1 '.
The described voltage signal input end of the termination S of described adjustable potentiometer P1, described first resistance R 1 of its another termination; The stiff end of the described relay K of another termination of described first resistance R 11 contact, described relay K 1 contact cut-off the described leakage current analog signal output of termination Out; The coil of described relay K 1 is connected on described loop and selects between signal input part C1 and the described relay common point Rc; The coils from parallel connection of coils of described diode D1 and described relay K 1; The positive pole of described light emitting diode Led1 connects described loop and selects signal input part C1, its negative pole through the described relay common point Rc of described second resistance R 1 ' connect.
Its principle of work is: initial time, and each loop all is in off-state; When control module U20 determines which bar loop to carry out work by, can send the loop and select signal to the loop of described loop correspondence to select signal input part; At this moment, receive the loop and select the coil motion of relay of the loop correspondence of signal, control the closing of contact of described relay, make the described loop that receives select the loop of signal to connect, the leakage current analog signal output Out output leakage current simulating signal in described loop is to relay module U40.
Be that example describes with concrete loop below, for example, select loop L2 work, then control module U20 sends the loop and selects the loop selection signal input part C2 of signal to loop L2 correspondence.At this moment, after the relay K 2 of loop L2 received described loop selection signal, its coil motion was controlled its closing of contact, loop L2 is connected, be converted into the leakage current simulating signal after making voltage signal by voltage signal input end S input through loop L2 to export relay module U40 to.
For each loop, the value of the leakage current simulating signal of its generation is relevant with the voltage signal of input, adjustable potentiometer and first resistance.For a certain fixed time, the value of the voltage signal of described power module U10 output is determined, at this moment, only needs the adjustable potentiometer of each loop correspondence of setting different with the value of first resistance, can obtain the leakage current simulating signal of different values.
What deserves to be explained is that in the present embodiment, described control module U20 can further control the concrete value of the voltage signal of described power module U10 output.And described control module U20 can also control the make-and-break time in each loop among the described leakage current generating module U30.
More than to the proving installation of a kind of miniature circuit breaker provided by the utility model with earth leakage protective device, be described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. the proving installation of a miniature circuit breaker usefulness earth leakage protective device is characterized in that described device comprises: power module, control module, leakage current generating module and pilot relay;
Described power module produces the correspondent voltage signal according to the control signal that is received from control module;
Described leakage current generating module is selected signal according to the loop that is received from control module, and described voltage signal is converted into the leakage current simulating signal, exports product to be measured to through described pilot relay;
Described control module is used to control described power module and produces the correspondent voltage signal, controls described leakage current generating module and produces corresponding leakage current simulating signal.
2. miniature circuit breaker according to claim 1 is characterized in that with the proving installation of earth leakage protective device described leakage current generating module comprises at least one leakage current generating loop, and different circuit produces the leakage current of different value.
3. the miniature circuit breaker according to claim 2 proving installation of earth leakage protective device, it is characterized in that described leakage current generating loop specifically comprises: comprise voltage signal input end, loop selection signal input part, leakage current analog signal output and relay common point;
Wherein, the voltage signal output end of the described power module of described voltage signal input termination; Signal output part is selected in the loop that its loop selects signal input part to connect described control module; Described leakage current analog signal output connects described relay module; Described relay common point is used to succeed the common zero point of electrical equipment;
Described loop comprises: adjustable potentiometer, first resistance, relay, diode, light emitting diode and second resistance;
The described voltage signal input end of one termination of described adjustable potentiometer, described first resistance of its another termination; The stiff end of the described relay contact of another termination of described first resistance, described relay contact cut-off the described leakage current analog signal output of termination; The coil of described relay is connected on described loop and selects between signal input part and the described relay common point; The coils from parallel connection of coils of described diode and described relay; The positive pole of described light emitting diode connects described loop and selects signal input part, its negative pole to connect described relay common point through described second resistance.
4. miniature circuit breaker according to claim 3 is characterized in that with the proving installation of earth leakage protective device the size of the leakage current simulating signal of described leakage current generating loop output is by described voltage signal, adjustable potentiometer and the decision of first resistance.
5. the miniature circuit breaker according to claim 2 proving installation of earth leakage protective device is characterized in that described control module comprises:
Power control unit produces power control signal, controls described power module U10 and produces the correspondent voltage signal;
The circuit controls unit produces the loop and selects signal, controls the break-make of different circuit in the described leakage current generating module, to produce the leakage current simulating signal of different value;
Relay control unit is used to control described relay module described leakage current simulating signal is sent to product to be measured.
6. the miniature circuit breaker according to claim 5 proving installation of earth leakage protective device; it is characterized in that; described control module also comprises judging unit, is used to receive the test result that described product to be measured returns, and judges that can described product to be measured realize earth leakage protection.
7. miniature circuit breaker according to claim 6 is characterized in that with the proving installation of earth leakage protective device described device also comprises display, is used to show the test result of output leakage current protection.
8. the miniature circuit breaker according to claim 1 proving installation of earth leakage protective device; it is characterized in that described device also comprises the short-circuit protection module, be connected between control module and the power module; be used for when described power module is short-circuited fault, protecting described control module.
9. the miniature circuit breaker according to claim 1 proving installation of earth leakage protective device; it is characterized in that; described device also comprises the short-circuit protection module; be connected between control module and the leakage current generating module; be used for when described leakage current generating module is short-circuited fault, protecting described control module.
10. the miniature circuit breaker according to claim 1 proving installation of earth leakage protective device; it is characterized in that; described device also comprises the short-circuit protection module; be connected between power module and the leakage current generating module; be used for when described leakage current generating module is short-circuited fault, protecting described power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202169856U CN201508397U (en) | 2009-09-28 | 2009-09-28 | A testing device of a leakage protector for a small-sized circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202169856U CN201508397U (en) | 2009-09-28 | 2009-09-28 | A testing device of a leakage protector for a small-sized circuit breaker |
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| CN201508397U true CN201508397U (en) | 2010-06-16 |
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| CN2009202169856U Expired - Lifetime CN201508397U (en) | 2009-09-28 | 2009-09-28 | A testing device of a leakage protector for a small-sized circuit breaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291175A (en) * | 2016-07-29 | 2017-01-04 | 许良炎 | Earth leakage protective device double test circuit and method of testing |
| CN107102257A (en) * | 2016-02-22 | 2017-08-29 | 李英锋 | A kind of protection detection device of breaker |
| CN108717161A (en) * | 2018-05-31 | 2018-10-30 | 昌辉汽车电器（黄山）股份公司 | A kind of vehicle switch test device and test method |
| CN110763993A (en) * | 2019-11-29 | 2020-02-07 | 松塔知识产权运营武汉有限公司 | Leakage current simulator |
-
2009
- 2009-09-28 CN CN2009202169856U patent/CN201508397U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102257A (en) * | 2016-02-22 | 2017-08-29 | 李英锋 | A kind of protection detection device of breaker |
| CN106291175A (en) * | 2016-07-29 | 2017-01-04 | 许良炎 | Earth leakage protective device double test circuit and method of testing |
| CN108717161A (en) * | 2018-05-31 | 2018-10-30 | 昌辉汽车电器（黄山）股份公司 | A kind of vehicle switch test device and test method |
| CN110763993A (en) * | 2019-11-29 | 2020-02-07 | 松塔知识产权运营武汉有限公司 | Leakage current simulator |
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| CX01 | Expiry of patent term |
Granted publication date: 20100616 |