CN206960614U - Contactor test device - Google Patents
Contactor test device Download PDFInfo
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- CN206960614U CN206960614U CN201720740952.6U CN201720740952U CN206960614U CN 206960614 U CN206960614 U CN 206960614U CN 201720740952 U CN201720740952 U CN 201720740952U CN 206960614 U CN206960614 U CN 206960614U
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- contactor
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Abstract
The utility model provides a kind of contactor test device, including：Display, controller and measuring contact resistance component；Wherein, the output end of the controller is used to connect into control circuit with the coil of contactor, to control the coil break-make of the contactor according to default break-make number；The input of the auxiliary contact of the contactor and the controller is connected to form backfeed loop；The measuring contact resistance component is connected with the main contacts of the contactor, and input of the measuring contact resistance component also with the controller is connected；The display is connected with the controller, for showing the closure number of the auxiliary contact.Contactor test device provided by the utility model can improve testing efficiency.
Description
Technical field
It the utility model is related to contactor measuring technology, more particularly to a kind of contactor test device.
Background technology
AC vacuum contactor is provided with the electric loop of EMU, for frequently switching on or cutting off work electricity
Stream and the power supply for switching on or off current motor at a distance.Because the quality of AC vacuum contactor determines electricity
The reliability of air circuit, it is therefore desirable to test the performance of AC vacuum contactor, including 50 are carried out to main contacts
The secondary test that is powered, 10 continuity tests of progress each to two pairs of auxiliary contact.
At present, the device tested the performance of AC vacuum contactor includes：Button, counter, Yi Jiwan
Use table.The coil of button and AC vacuum contactor is connected to form loop, the auxiliary of counter and AC vacuum contactor is touched
Point connection forms loop.Test process is：Operating personnel's manual depression of button, so that button closes 50 times, disconnect 50 times.When by
When button closes, the coil of AC vacuum contactor obtains electric, main contacts and two pairs of auxiliary contact engagements；When button disconnects, exchange
The coil blackout of vacuum contactor, main contacts and two pairs of auxiliary contact disconnect.The number that counter engages to auxiliary contact is carried out
Count and show.Operating personnel also need to the conduction property of the test pencil measurement main contacts of hand-held universal meter.
, it is necessary to manual key 100 times during testing an AC vacuum contactor, and use universal meter hand
The dynamic conduction property to main contacts is tested.An AC vacuum contactor can only once be tested, and operator
Member carries out the mechanical duplication of labour always, causes testing efficiency relatively low.
Utility model content
The utility model provides a kind of contactor test device, for improving testing efficiency.
The utility model provides a kind of contactor test device, including：Display, controller and measuring contact resistance group
Part；
Wherein, the output end of the controller is used to connect into control circuit with the coil of contactor, with according to default
Break-make number controls the coil break-make of the contactor；The auxiliary contact of the contactor are connected with the input of the controller
Form backfeed loop；
The measuring contact resistance component is connected with the main contacts of the contactor, and the measuring contact resistance component is also
It is connected with the input of the controller；
The display is connected with the controller, for showing the closure number of the auxiliary contact.
Contactor test device as described above, the measuring contact resistance component include：Voltage detection device and electric current
Detect device；
The current sensing device connects to form loop to be measured with the main contacts, and the voltage detection device is connected in parallel on institute
State the both ends of main contacts.
Contactor test device as described above, relay, the coil of the relay are provided with the control circuit
It is connected with the output end of the controller, the contact of the relay and the coil of the contactor connect into control loop.
Contactor test device as described above, the controller is programmable logic controller (PLC).
Contactor test device as described above, the programmable logic controller (PLC) include at least five digital outputs
End, for connecting into control circuit with the coil of at least five contactors；
The programmable logic controller (PLC) also includes at least five digital quantity inputs, for at least five contactors
Auxiliary contact are connected.
Contactor test device as described above, the programmable logic controller (PLC) also include at least ten analog inputs
End, for being connected with least five voltage detection devices and at least five current sensing devices are connected.
Contactor test device as described above, the display are touch display, and the touch display is used to connect
Receive the touch gestures of user and be converted to control instruction and be sent to controller.
Contactor test device as described above, the voltage detection device is voltage sensor.
Contactor test device as described above, the current sensing device is current sensor.
Technical scheme provided by the utility model, control circuit is connected into by using the coil of controller and contactor,
For obtaining electric or power-off according to default break-make number control coil, and then the main contacts of control contactor, auxiliary contact are each
Self-closing or disconnection；Controller is also connected to form backfeed loop with auxiliary contact, carried out by the closure number to auxiliary contact in terms of
Number, count value are shown on a display screen；In addition, also it is connected using measuring contact resistance component with main contacts, for measuring main touch
The contact resistance of point, and send measured data to controller.Technical scheme provided by the utility model is controlled using controller
The action of contactor processed, without operating personnel's manual key, operating personnel are freed from the mechanical duplication of labour, carried
High testing efficiency.Also, a controller can control multiple contactors to act simultaneously, further increase testing efficiency.
Brief description of the drawings
Fig. 1 is the structural representation for the contactor test device that the utility model embodiment provides；
Fig. 2 is the structural representation of measuring contact resistance component in the contactor test device that the utility model embodiment provides
Figure.
Reference：
1- displays；2- controllers；3- measuring contact resistance components；
31- voltage detection devices；32- current sensing devices；33- measuring resistances；
4- contactors；41- coils；42- main contacts；
421- movable contacts；422- stationary contacts；43- auxiliary contact；
5- relays；6- power supplys；7- tests casing.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Fig. 1 is the structural representation for the contactor test device that the utility model embodiment provides.As shown in figure 1, this reality
Apply example and a kind of contactor test device is provided, including：Display 1, controller 2 and measuring contact resistance component 3.Wherein, control
The output end of device 2 is used to connect into control circuit with the coil 41 of contactor 4, with according to default break-make number control contactor
4 break-make of coil 41.The auxiliary contact 43 of contactor 4 are connected to form backfeed loop with the input of controller 2.Contact resistance is surveyed
Amount component 3 is connected with the main contacts 42 of contactor 4, and input of the measuring contact resistance component 3 also with controller 2 is connected, and uses
Contact resistance between main contacts 42 is measured.Display 1 is connected with controller 2, for showing the closure time of auxiliary contact 43
Number.
The output end of controller 2 is connected to form control circuit with the coil 41 of contactor 4, and controller is used for control coil 41
Electric or power-off is obtained, when coil 41 obtains electric, then 43 each self-closing of the main contacts 42 of contactor 4 and auxiliary contact；When coil 41 powers off,
Then main contacts 42 and auxiliary contact 43 each disconnect.Auxiliary contact 43 have two pairs, are synchronization action, and synchronous with main contacts 42 dynamic
Make.
Above-mentioned default break-make number can be realized by additionally building oscillating circuit, or can pass through controller 2
To set.Controller noted above 2 can use microcontroller commonly used in the prior art, industrial control unit (ICU) etc., and technical staff can be to control
Device processed is programmed, and electric number is obtained for control coil 41.Or controller 2 can also build hardware by technical staff
Circuit realizes its function, and the present embodiment do not limit.
The input of auxiliary contact 43 and controller 2 is connected to form backfeed loop, then auxiliary contact 43 are closed or disconnected,
Signal can be sent to controller 2, so that the number that controller 2 can close to auxiliary contact 43 counts.Controller 2 with
Display 1 is connected, and is shown for count value to be sent into display 1.
Measuring contact resistance component 3 is connected to the both ends of movable contact and stationary contact in main contacts 42, for measuring movable contact
Contact resistance value between stationary contact, and then measure the contact performance of main contacts 42.Measuring contact resistance component 3 also with control
The input of device 2 is connected, for measurement signal to be sent into controller 2.
The technical scheme that the present embodiment provides, control electricity is connected into by using the coil 41 of controller 2 and contactor 4
Road, for according to default break-make number control coil 41 electric or power-off, it is and then the main contacts 42 of control contactor 4, auxiliary
Help 43 each self-closing of contact or disconnection；Controller 2 is also connected to form backfeed loop with auxiliary contact 43, with to auxiliary contact 43
Closure number is counted, and count value is shown on display screen 1；In addition, also using measuring contact resistance component 3 and main contacts 42
It is connected, for measuring the contact resistance of main contacts 42, and sends measured data to controller 2.The technology that the present embodiment provides
Scheme using controller 2 come the action of control contactor 4, without operating personnel's manual key, by operating personnel from mechanical
Freed in the duplication of labour, improve testing efficiency.Also, a controller 2 can control multiple contactors 4 dynamic simultaneously
Make, further increase testing efficiency.
In the present embodiment, using programmable logic controller (PLC) (Programmable Logic Controller, abbreviation：
PLC) it is used as controller 2.PLC has digital output end, digital quantity input and analog input end, wherein, digital quantity is defeated
Go out end to be connected to form control circuit with the coil 41 of contactor 4, digital quantity input is connected to form with auxiliary contact 43 and fed back to
Road, analog input end are connected with measuring contact resistance component 3.
For above-mentioned measuring contact resistance component 3, its function is the contact electricity for measuring main contacts 42 in contactor 4
Resistance, is tested with the output performance to contactor 4.The function of measuring contact resistance component 3 can be realized using various ways,
Those skilled in the art can build corresponding circuit to realize its function.The present embodiment provides a kind of concrete implementation mode：
Fig. 2 is the structural representation of measuring contact resistance component in the contactor test device that the utility model embodiment provides
Figure.As shown in Fig. 2 measuring contact resistance component 3 includes：Voltage detection device 31 and current sensing device 32.Wherein, electric current is examined
Survey device 32 to connect to form loop to be measured with the movable contact 421 in main contacts 42 and stationary contact 422, voltage detection device 31 is in parallel
At the both ends of movable contact 421 and stationary contact 422.
A measuring resistance 33 is also concatenated in loop to be measured, the voltage applied in loop to be measured is normal voltage E, then passes through
Voltage detection device 31 measures the voltage at both ends after main contacts 42 closes, and current sensing device 32 is measured in loop to be measured
Electric current, you can the contact resistance between main contacts 42 is calculated by following formula：
Wherein, the resistance of contact resistances of the R between main contacts 42, E are standard voltage value, and I is current sensing device 32
Obtained loop current to be measured is measured, r is the resistance of measuring resistance 33.
Specifically, above-mentioned voltage detection device 31 can be voltage sensor, resistance commonly used in the prior art is not limited to
Formula, electromagnetic type, Hall voltage sensor etc..Current sensing device 32 can be current sensor, be not limited to normal in the prior art
Electromagnetic type, electronic type, optical fiber type, Hall current sensor etc..
Voltage sensor and current sensor be connected with an analog input end in PLC respectively, for that will measure
Voltage signal and current signal are supplied to PLC, PLC to can perform the calculating process of above-mentioned resistance, and specific calculating process can be by technology
Personnel's programming realization, it can be realized using programming language commonly used in the prior art and algorithm, the present embodiment does not limit.
Generally, the voltage magnitude that controller 2 exports is relatively low, and voltage magnitude is higher in the control circuit of contactor 4, then exists
Relay 5 can be set between controller 2 and contactor 4, realize circuit conversion.Specifically, the coil of relay 5 and controller 2
Output end be connected, such as：Loop is connected to form with PLC digital output end.The contact of relay 5 and the line of contactor 4
Circle 41 is connected to form loop.By taking SIEMENS PLC as an example, its digital output end output voltage be direct current 24V, for control after
The coil break-make of electrical equipment 5, the voltage in the loop that the contact of relay 5 is connected with the coil 41 of contactor 4 can be exchange
220V, then it can realize that low-voltage controls high voltage using relay 5.
Those skilled in the art can select the controller of different model, and multiple contactors 4 are surveyed simultaneously with realizing
Examination.The present embodiment is by taking SIEMENS PLC as an example, including at least five digital output ends, for the line with least five contactors 4
Circle 41 connects into control circuit；And at least five digital quantity inputs, for the auxiliary contact 43 with least five contactors 4
It is connected.Also include at least ten analog input ends, for be connected with least five voltage detection devices 31 and at least five electricity
Current sensor part 32 is connected.Such as：Using Siemens S7-200PLC, you can realize above-mentioned function.Can be shown on display 1 to
The closure number of auxiliary contact 43 in few five contactors 4.
Further, aforementioned display device 1 except possess display contactor 4 in auxiliary contact 43 close number function it
Outside, there can also be manipulation function.Specifically, display 1 is touch display, available for the touch gestures for receiving user and turn
It is changed to control instruction and is sent to controller 2.Virtual key is set on display 1, such as：Jerk button, operating personnel can be
Jerk button is pressed on display 1, stops the test to contactor 4 immediately.
When PLC sends the instruction 50 times for promoting contactor 4 to act, and the closure number deficiency that auxiliary contact 43 are fed back
It is " unqualified " that corresponding contactor 4 can be shown at 50 times, on display 1.
PLC is calculated the resistance of the contact resistance between main contacts 42, and is judged whether within a preset range, if not
Within a preset range, then it is " unqualified " that corresponding contactor 4 can be shown on display 1.
It is understood that can be powered using power supply 6 to aforementioned display device 1 and controller 2, power supply 6 can incite somebody to action
220V alternating currents are converted to 24V direct currents, there is provided to display 1 and controller 2.Protected in addition, can be set in corresponding circuit
Shield switch, such as：Overcurrent protective switch, when electric current exceedes preset value, overcurrent protective switch disconnects, in protection circuit
Each device.
Aforementioned display device 1, controller 2 and measuring contact resistance component 3, relay 5 and power supply 6 can be arranged on test
In casing 7, and the gap of casing is sealed, it is possible to increase reach waterproof and dustproof and etch-proof effect, and be easy to carry
And carrying.Terminal block can be provided with test casing 7, for wiring.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect or can communicate with one another；Can be joined directly together, the indirect phase of intermediary can also be passed through
Even, can be two element internals connection or two elements interaction relationship.For one of ordinary skill in the art
For, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
- A kind of 1. contactor test device, it is characterised in that including：Display, controller and measuring contact resistance component；Wherein, the output end of the controller is used to connect into control circuit with the coil of contactor, with according to default break-make Number controls the coil break-make of the contactor；The input of the auxiliary contact of the contactor and the controller is connected to form Backfeed loop；The measuring contact resistance component is connected with the main contacts of the contactor, and the measuring contact resistance component also with institute The input for stating controller is connected；The display is connected with the controller, for showing the closure number of the auxiliary contact.
- 2. contactor test device according to claim 1, it is characterised in that the measuring contact resistance component includes： Voltage detection device and current sensing device；The current sensing device connects to form loop to be measured with the main contacts, and the voltage detection device is connected in parallel on the master The both ends of contact.
- 3. contactor test device according to claim 2, it is characterised in that be provided with relay in the control circuit Device, the coil of the relay are connected with the output end of the controller, the contact of the relay and the line of the contactor Circle connects into control loop.
- 4. contactor test device according to claim 3, it is characterised in that the controller is Programmable logical controller Device.
- 5. contactor test device according to claim 4, it is characterised in that the programmable logic controller (PLC) is included extremely Few five digital quantity output ends, for connecting into control circuit with the coil of at least five contactors；The programmable logic controller (PLC) also includes at least five digital quantity inputs, for the auxiliary with least five contactors Contact is connected.
- 6. contactor test device according to claim 5, it is characterised in that the programmable logic controller (PLC) also includes At least ten analog input ends, for being connected with least five voltage detection devices and at least five current sensing device phases Even.
- 7. according to the contactor test device described in claim any one of 1-6, it is characterised in that the display is aobvious to touch Show device, the touch display is used to receive the touch gestures of user and be converted to control instruction to be sent to controller.
- 8. contactor test device according to claim 6, it is characterised in that the voltage detection device is voltage sensor Device.
- 9. contactor test device according to claim 6, it is characterised in that the current sensing device is current sense Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740952.6U CN206960614U (en) | 2017-06-23 | 2017-06-23 | Contactor test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740952.6U CN206960614U (en) | 2017-06-23 | 2017-06-23 | Contactor test device |
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| Publication Number | Publication Date |
|---|---|
| CN206960614U true CN206960614U (en) | 2018-02-02 |
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|---|---|---|---|
| CN201720740952.6U Active CN206960614U (en) | 2017-06-23 | 2017-06-23 | Contactor test device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111190055A (en) * | 2018-11-15 | 2020-05-22 | 河南许继仪表有限公司 | A relay contact resistance testing device |
| CN111624417A (en) * | 2020-03-27 | 2020-09-04 | 广州市双宝电子科技有限公司 | Device for improving product testing efficiency |
| CN111650505A (en) * | 2020-06-16 | 2020-09-11 | 三一重能有限公司 | Contactor fault diagnosis method and device, storage medium and converter |
| CN112505370A (en) * | 2020-12-09 | 2021-03-16 | 贵州天义电器有限责任公司 | Electron conversion auxiliary contact detection device |
| CN114460454A (en) * | 2022-03-04 | 2022-05-10 | 国网河北省电力有限公司雄安新区供电公司 | Device and method for detecting contact on-off reliability of direct current contactor of direct current system |
-
2017
- 2017-06-23 CN CN201720740952.6U patent/CN206960614U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111190055A (en) * | 2018-11-15 | 2020-05-22 | 河南许继仪表有限公司 | A relay contact resistance testing device |
| CN111624417A (en) * | 2020-03-27 | 2020-09-04 | 广州市双宝电子科技有限公司 | Device for improving product testing efficiency |
| CN111650505A (en) * | 2020-06-16 | 2020-09-11 | 三一重能有限公司 | Contactor fault diagnosis method and device, storage medium and converter |
| CN112505370A (en) * | 2020-12-09 | 2021-03-16 | 贵州天义电器有限责任公司 | Electron conversion auxiliary contact detection device |
| CN114460454A (en) * | 2022-03-04 | 2022-05-10 | 国网河北省电力有限公司雄安新区供电公司 | Device and method for detecting contact on-off reliability of direct current contactor of direct current system |
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