CN207965077U - The test device of the external breaker of electric energy meter - Google Patents
The test device of the external breaker of electric energy meter Download PDFInfo
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- CN207965077U CN207965077U CN201820510353.XU CN201820510353U CN207965077U CN 207965077 U CN207965077 U CN 207965077U CN 201820510353 U CN201820510353 U CN 201820510353U CN 207965077 U CN207965077 U CN 207965077U
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Abstract
The utility model discloses a kind of test devices of the external breaker of electric energy meter, including controller, pressure regulator, transformer, detection of electrical leakage module, voltage signal detection module and switching switching group；Three phase mains signal connects external breaker input terminal to be tested；Voltage signal detection module connects external breaker output end to be tested；Pressure regulator input terminal connects power supply, if output end exports main line voltage signal by transformer and connects the control terminal of external breaker to be tested by switching switching group；Leakage tests module is connected in the control terminal and input terminal of transformer to be tested；Controller and detection of electrical leakage module, voltage signal detection module and switching switching group connects, for obtaining detection information and judging the performance of external breaker, while controlling the working condition that switching switchs.The utility model realizes comprehensive test of the test device to the external breaker of electric energy meter all the way, and test process is simple, and circuit is simple and reliable, and testing efficiency is high.
Description
Technical field
The utility model is specifically related to a kind of test device of the external breaker of electric energy meter.
Background technology
With the development and the improvement of people's living standards of national economy technology, electric energy has become people's production and life
One of most important energy in work, endless facility is brought to the production and life of people.
Electric energy meter is the extremely important electric energy measuring equipment of electric system, and the external breaker of electric energy meter is then electric energy meter reality
Now take the critical component of control function.With the continuous improvement that electric system requires electric power safety and tariff recovery, electric network consecutive
The technical standard of the external breaker of electric energy meter is issued.External breaker is traditional miniature circuit breaker and modern electronic technology
In conjunction with core is automatic divide-shut brake and feedback of status.Therefore, the performance quality of external breaker is also directly related to electric energy
The quality of table or even electric network performance.
The core of external breaker is automatic divide-shut brake and feedback of status, it increases control list compared with conventional small breaker
There is control terminal and feedback end, conventional small breaker only to have phase line end for element module, control unit module.External breaker
The acting characteristic and feedback of AC220V level control external breaker when referring to the AC220V level changes of phase line end or control terminal
The feedback of status situation at end；Manual/auto pattern switching refers to external breaker automatic divide-shut brake and " hand under " automatic " pattern
It is dynamic " characteristic of dynamic circuit connector of saying good-bye automatically under pattern；Leakage Current is the steady of external breaker not bringing onto load time control end and phase line end
State current value；Remote auto branch wire time be external breaker receive control terminal signal intensity start to switch complete division
The time of lock action；When delayed indicates that phase line end and control terminal re-power, control end signal changes immediately, external open circuit
Response time of the device to control signal；The external breaker of driving capability expression is wanted can be in 60%-120% rated operational voltages 220V
In the range of work normally, and cannot be damaged when applying 380V voltages；Mechanical life indicates that external breaker receives certain frequency
The control end signal of rate remains to normal work and use after carrying out the no less than breaking-closing operating bout of setting number.
Due to the particularity of external breaker function, the breaker detection device of conventional small cannot meet external breaker
The requirement of detection, and there is no the test functions that any type test device can realize above-mentioned external breaker now.
Utility model content
The purpose of this utility model is to provide a kind of circuit is simple and reliable, the external breaker detection of electric energy meter can be completed
The external breaker of electric energy meter test device.
The test device of the external breaker of this electric energy meter provided by the utility model, including controller, pressure regulator, transformation
Device, detection of electrical leakage module, voltage signal detection module and switching switching group；Three phase mains signal is directly connected to be tested external disconnected
The input terminal of road device；Voltage signal detection module is directly connected to the output end of external breaker to be tested and detects to be tested external
The feedback line signal of the output voltage signal of breaker and external breaker to be tested；The input terminal of pressure regulator connects three phase mains
Signal, if the output end of pressure regulator is waited for by exporting main line voltage signal after transformer transformation, and by switching switching group connection
Test the control terminal of external breaker；Leakage tests module is connected in the control terminal and input terminal of transformer to be tested, is used for
Detect the leakage current of external breaker to be tested；Controller is switched with detection of electrical leakage module, voltage signal detection module and switching
Group connects, the detection information for obtaining detection of electrical leakage module and voltage signal detection module and the property for judging external breaker
Can, while controller also sends out the working condition of control command control switching switch, to realize several external breaker
Working condition switches.
The test device of the external breaker of the electric energy meter further includes protection module；Three phase mains signal is by protecting mould
The input terminal of pressure regulator or external breaker to be tested is reconnected after block；Protection module is used for protection tester.
The test device of the external breaker of the electric energy meter further includes indicating module；Indicating module is connect with controller,
It is used to indicate the working condition of the test device of the external breaker of the electric energy meter.
The input terminal of the transformer inputs for 220V, and the output end of transformer includes 10V output ends, 132V outputs
End, 220V output ends, 264V output ends and 380V output ends.
The test device of the external breaker of this electric energy meter provided by the utility model, is set by reasonable and complete circuit
Meter, realizes comprehensive test of the test device to the external breaker of electric energy meter all the way, and test process is simple, circuit simply may be used
It leans on, testing efficiency is high.
Description of the drawings
Fig. 1 is the functional block diagram of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Specific implementation mode
It is the functional block diagram of the utility model as shown in Figure 1：The external open circuit of this electric energy meter provided by the utility model
The test device of device, including controller, pressure regulator, transformer, detection of electrical leakage module, voltage signal detection module, switching switch
Group, protection module and indicating module；Three phase mains signal is directly connected to the input terminal of external breaker to be tested；Voltage signal is examined
Survey module be directly connected to the output end of external breaker to be tested and detect external breaker to be tested output voltage signal and
The feedback line signal of external breaker to be tested；The input terminal of pressure regulator connects three phase mains signal, and the output end of pressure regulator is logical
If exporting main line voltage signal after crossing transformer transformation, and the control of external breaker to be tested is connected by switching switching group
End；Leakage tests module is connected in the control terminal and input terminal of transformer to be tested, for detecting external breaker to be tested
Leakage current；Controller is connect with detection of electrical leakage module, voltage signal detection module and switching switching group, for obtaining electric leakage inspection
It surveys the detection information of module and voltage signal detection module and judges the performance of external breaker, while controller also sends out control
The working condition of order control switching switch, to realize the working condition switching of several external breaker；Three phase mains is believed
Number by reconnecting the input terminal of pressure regulator or external breaker to be tested after protection module, protection module is for protecting test dress
It sets；Indicating module is connect with controller, is used to indicate the working condition of the test device of the external breaker of the electric energy meter.
It is illustrated in figure 2 the circuit diagram of the utility model：Such as figure, it can be seen that, power supply input signal is by protecting mould
Block circuit breaker Q F1 (breaker total as test device) generates power supply signal afterwards, and power supply signal separates to be signally attached to all the way
The input terminal of pressure regulator；The normally opened node (KA1, KA2 and KA3) and starting switch QF2 that power supply signal passes through the first relay group
Afterwards, it is connected with the normally closed node of third detection switch KA24 again by the normally opened node of input relay KA11 to be tested external
The input terminal of breaker, and the both ends of the normally closed node of third detection switch KA24 are parallel with the third detection switch after series connection
The normally opened node and detection of electrical leakage module of KA24；Indicator light H1, H2 and H3 are attempted by between three-phase power line and zero curve, for referring to
Show the state of power cord；The output end of pressure regulator is by exporting 5 road power supply signals, respectively 10V output ends, 132V after transformer
Output end, 220V output ends, 264V output ends and 380V output ends；Switching switching group include switch KA1, KA2, KA3, KA9,
KA10, KA11, KA24 and KA25, and above-mentioned switch is the contact switch of relay or contactor, it can therefore be seen that
There are multiple KA9 switch contacts in figure, indicates that multiple KA9 switch contacts (including normally-closed contact and open contacts) are same
The contact switch of a relay or contactor, and all switch contacts marked as KA9 act simultaneously；Three phase mains signal is logical
External open circuit to be tested is connected after overprotection circuit breaker Q F1, switch KA1~KA3, starting switch QF2 and relay switch KA11
The input terminal of device (product is indicated in figure)；The feedback line output terminal (feedback line 1F-1 is indicated in figure) of external breaker to be tested is logical
Diode D2 connection voltage signal detection modules are crossed, zero curve is connected simultaneously also by indicator light；Voltage signal detection module passes through
Output relay (switch KA25) connects the output end of external breaker (indicating product in figure) to be tested and detects to be tested outer
The output voltage signal of breaker is set, voltage signal detection module is also used for detecting the feedback line of external breaker to be tested simultaneously
Voltage；The secondary side output end of the primary side of the output end connection transformer of pressure regulator, transformer includes 10V output ends, 132V outputs
End, 220V output ends, 264V output ends and 380V output ends, 10V output ends connect the connection of 10V switches KA4,132V output end
132V switches KA5,220V output end connects 220V switches KA6,264V output end connection 264V switches KA7,380V output end and connects
380V switches KA8, KA4~KA8 are met by being divided into three road signals after insuring F1, and first via signal is opened by the detection of switch first
The normally closed node and voltmeter of pass KA9 are connected to the ends 0V of transformer secondary, and second road signal passes through the first detection switch KA9's
Power cord A phase lines are connected after the normally opened node of normally closed node and the second detection switch KA10；Third road signal passes through the first detection
After the normally opened node and diode D1 of switch KA9 and the normally opened node of the first detection switch KA9, then pass through the second detection switch
The normally opened node of KA10 connects power cord A phase lines；The output end of second road signal and third road signal passes through third detection switch
The normally opened node of the normally closed node of KA24, resistance R and the 4th detection switch KA17 is connected to the control of external breaker to be tested
End, while the output end of second road signal and third road signal is also surveyed by the normally opened node of third detection switch KA24 and electric leakage
Die trial block connects the control terminal of external breaker to be tested.
The test device of the above-mentioned external breaker of electric energy meter, the course of work are as follows：
In description below, if description relay KA9 is closed, show that the control coil of relay KA9 is closed, at this time
The action of the action node of relay KA9 should be：It is originally used for the action node of normally closed node (as shown in Figure 2 and voltage
The concatenated normally closed node KA9 of table) will be switched off, and be originally used for normally opened node action node (as shown in Figure 2 with diode D1
Concatenated normally opened node KA9) it will be closed；The working condition of remaining relay is as foregoing description acts.
1) AC220V level Control experiment：Intermediate relay KA1, KA2, KA3 closure, pressure regulator secondary side export 220V,
Intermediate relay KA6 is closed, and relay KA4, KA5, KA7, KA8, KA9 and KA10 are failure to actuate, and relay KA11 is closed, relay
Device KA24 is failure to actuate；
At this point, voltage signal detection module is devoted oneself to work；If relay KA17 is controlled by controller and energized action,
The normally opened contact of KA17 is closed, then external circuit breaker to be tested should be able to automatic closing, and then phase line leading-out terminal A1, B1, C1,
N1 and feedback line have voltage output, then voltage signal detection module output end DI0-DI3 output signals, the input of DI0-DI3 signals
Controller；Controller judges that the external breaker to be tested is qualified or not in this tests according to the voltage signal received.
2) Leakage Current is tested：Intermediate relay KA1, KA2 and KA3 is closed, and pressure regulator secondary side exports 220V, it is intermediate after
Electric appliance KA6 is closed, and relay KA4, KA5, KA7, KA8, KA9 and KA10 are failure to actuate, and relay KA11 and KA24 are closed, to be measured
It tries the corresponding detection of electrical leakage module of external breaker to devote oneself to work, the phase line Leakage Current to external breaker to be tested and control
End steady-state current test and test result is uploaded controller；Controller is to be tested outer according to the upload result judgement of reception
Whether qualified set breaker.
3) remote auto branch wire time is tested：Intermediate relay KA1, KA2 and KA3 are closed, the output of pressure regulator secondary side
220V, intermediate relay KA6 are closed, and relay KA4, KA5, KA7, KA8, KA9 and KA10 are failure to actuate, and relay KA11 is closed
It closes, relay KA24 is failure to actuate, and voltage signal detection module is devoted oneself to work；
When this tests, controller control relay KA17 powers on action, and starts simultaneously at timing (timing may be used
The crystal oscillation signal of controller itself institute band carries out timing or external standard timing unit carries out timing), and examined in voltage signal
It surveys when module detects the output end voltage of external circuits device to be tested and stops timing, timing time at this time is remote switching
Time；
In addition, controller control relay KA17 dead electricity resets and start timing, and detected in voltage signal detection module
Until the Voltage Drop of external breaker output end to be tested and stop timing, when timing time at this time is long-range separating brake
Between；
Controller judges whether external breaker to be tested is qualified according to the long-range branch wire time detected.
4) the delayed time tests：Intermediate relay KA1, KA2 and KA3 are closed, and pressure regulator secondary side exports 220V, in
Between relay KA6 be closed, relay KA4, KA5, KA7, KA8, KA9 and KA10 are failure to actuate, and relay KA11 is closed, relay
KA24 is failure to actuate, and voltage signal detection module is devoted oneself to work；
When this tests, relay KA1, KA2 and KA3 obtain it is electric after, control relay KA11 is closed, and controls relay
KA17 must not electricity, so that the expense control of external breaker to be tested is switched and be placed in arrearage state, then controller control relay KA1,
KA2 and KA3 is disconnected, and makes system cut-off, is then controlled relay KA1, KA2, KA3 and KA17 and is closed at, system telegram in reply.This
When, controller records system telegram in reply until the voltage signal detection module of external breaker to be tested detects corresponding voltage
Time be the delayed time；Controller judges whether external breaker to be tested closes according to the delayed time detected
Lattice.
5) driving capability is tested：
When pressure regulator secondary side exports 10V, intermediate relay KA1 is closed, and relay KA2 and KA3 are failure to actuate, intermediate relay
Device KA4 and KA9 obtain electric closure, and relay KA5, KA6, KA7, KA8 and KA10 are failure to actuate；Relay KA11 and KA17 are closed, after
Electric appliance KA24 is failure to actuate；External breaker to be tested at this time should be at off-state, and voltage signal detection module is without output；
Pressure regulator secondary side export 132V when, intermediate relay KA1, KA2 and KA3 are failure to actuate, intermediate relay KA5 and
KA10 obtains electric closure, and relay KA4, KA6, KA7, KA8 and KA9 are failure to actuate；Relay KA11 is closed, and relay KA24 is motionless
Make；If relay KA17 is closed at this time, the output end of external breaker to be tested should output voltage signal, voltage signal inspection
Surveying module DI0-DI3 has output；If relay KA17 is disconnected, the output end of external breaker to be tested should be without output voltage
Signal, voltage signal detection module DI0-DI3 is without output；
When pressure regulator secondary side exports 264V, intermediate relay KA7 and KA10 obtain electric closure, relay KA4, KA5, KA6,
KA8 and KA9 are failure to actuate；Relay KA11 is closed, and relay KA24 is failure to actuate；If relay KA17 is closed at this time, to be tested
The output end of external breaker should output voltage signal, voltage signal detection module DI0-DI3 has output；If relay KA17
It disconnects, then the output end of external breaker to be tested should be without output voltage signal, and voltage signal detection module DI0-DI3 is without defeated
Go out；
When pressure regulator secondary side exports 380V, intermediate relay KA8 and KA10 obtain electric closure, relay KA4, KA5, KA6,
KA7 and KA9 are failure to actuate；Relay KA11 and KA17 are closed, and relay KA24 is failure to actuate；380V voltages are carried out under this kind of state
After experiment, it should 132V and 264V is carried out to external breaker to be tested again and is tested, is judged after being tested by 380V, it is to be tested outer
Whether qualified set breaker.
6) mechanical endurance test：Intermediate relay KA1, KA2 and KA3 is closed, and pressure regulator secondary side exports 220V, it is intermediate after
Electric appliance KA6 is closed, and relay KA4, KA5, KA7, KA8, KA9 and KA10 are failure to actuate, and relay KA11 is closed, relay KA17
It is closed or is disconnected according to measurement condition, relay KA24 is failure to actuate, and voltage signal detection module is devoted oneself to work at this time；
When this tests, if " product test power-off time " is set as A seconds, " product test conduction time " is set as B
Second, then controller control intermediate relay KA17 obtains the electric and then A seconds dead electricity that are closed for B seconds in the second per (A+B) and resets.In relay
During KA17 obtains electric closure, external breaker to be tested at this time answers automatic closing, leading-out terminal and feedback end to have voltage output, in turn
Corresponding voltage signal detection module DI0-DI3 has signal output；And during relay KA17 power-off, external breaker to be tested
Automatic brake separating, leading-out terminal and feedback end Non voltage output are answered, and then corresponding voltage signal detection module DI0-DI3 no signals are defeated
Go out；Test result and the total degree of accumulative mechanical life and unqualified number of the controller judgement per (A+B) second one bout, from
And judge that external breaker to be tested is qualified or not.
In the specific implementation, the test device of the external breaker of the electric energy meter can more set concurrent workings, it is each
Test device can share a controller, i.e. a controller controls all relays in several test devices, to
Complete corresponding test.In that case, for testing efficiency compared to the test device that separate unit covers, testing efficiency is more high
Effect.
Claims (5)
1. a kind of test device of the external breaker of electric energy meter, it is characterised in that including controller, pressure regulator, transformer, electric leakage
Detection module, voltage signal detection module and switching switching group；Three phase mains signal is directly connected to external breaker to be tested
Input terminal；Voltage signal detection module is directly connected to the output end of external breaker to be tested and detects external breaker to be tested
Output voltage signal and external breaker to be tested feedback line signal；The input terminal of pressure regulator connects three phase mains signal,
If the output end of pressure regulator is connected by exporting main line voltage signal after transformer transformation, and by switching switching group outside to be tested
Set the control terminal of breaker；Leakage tests module is connected in the control terminal and input terminal of transformer to be tested, is waited for for detecting
Test the leakage current of external breaker；Controller is connect with detection of electrical leakage module, voltage signal detection module and switching switching group,
Detection information for obtaining detection of electrical leakage module and voltage signal detection module and the performance for judging external breaker, same to time control
Device processed also sends out the working condition of control command control switching switch, to realize that the working condition of several external breaker is cut
It changes.
2. the test device of the external breaker of electric energy meter according to claim 1, it is characterised in that further include protection module；
Three phase mains signal passes through the input terminal of reconnection pressure regulator or external breaker to be tested after protection module；Protection module is used for
Protection tester.
3. the test device of the external breaker of electric energy meter according to claim 1, it is characterised in that outside the electric energy meter
The test device for setting breaker further includes indicating module；Indicating module is connect with controller, and it is external to be used to indicate the electric energy meter
The working condition of the test device of breaker.
4. the test device of the external breaker of electric energy meter according to one of claims 1 to 3, it is characterised in that the change
The input terminal of depressor inputs for 220V, and the output end of transformer includes 10V output ends, 132V output ends, 220V output ends, 264V
Output end and 380V output ends.
5. the test device of the external breaker of electric energy meter according to claim 4, it is characterised in that power supply input signal is logical
Power supply signal is generated after overprotection module breaker, power supply signal separates the input terminal for being signally attached to pressure regulator all the way；Power supply
After normally opened node and starting switch that signal passes through the first relay group, again by the normally opened node and third of input relay
The normally closed node of detection switch connects the input terminal of external breaker to be tested, and the both ends of the normally closed node of third detection switch
It is parallel with the normally opened node and detection of electrical leakage module of the third detection switch after series connection；After the output end of pressure regulator is by transformer
Export 5 road power supply signals, respectively 10V output ends, 132V output ends, 220V output ends, 264V output ends and 380V output ends；
The feedback line output terminal of external breaker to be tested is by connecting voltage signal detection module；Voltage signal detection module passes through defeated
Go out relay to connect the output end of external breaker to be tested and detect the output voltage signal of external breaker to be tested, voltage
Signal detection module is also used for detecting the feedback line voltage of external breaker to be tested simultaneously；The output end of pressure regulator connects transformation
The primary side of device, the secondary side output end of transformer include 10V output ends, 132V output ends, 220V output ends, 264V output ends and
380V output ends, 10V output ends connect 10V and switch normally opened node, and 132V output ends connect 132V and switch normally opened node, and 220V is defeated
Outlet connects 220V and switchs normally opened node, and 264V output ends connect 264V and switch normally opened node, and 380V output ends connection 380V is opened
Normally opened node is closed, 10V switchs normally opened node, 132V switchs normally opened node, 220V switchs normally opened node, 264V switchs normally opened node
Normally opened node is switched by being divided into three road signals after insurance with 380V, and first via signal is normal by the first detection switch of switch
Close node and voltmeter are connected to the ends 0V of transformer secondary, and second road signal passes through the normally closed node of the first detection switch and
Power cord is connected after the normally opened node of two detection switch；Normally opened node, the diode that third road signal passes through the first detection switch
Power cord is connected after the normally opened node of the first detection switch, then by the normally opened node of the second detection switch；Second road signal
Connected by the normally opened node of the normally closed node of third detection switch, resistance and the 4th detection switch with the output end of third road signal
It is connected to the control terminal of external breaker to be tested, while the output end of second road signal and third road signal is also detected by third
The normally opened node of switch connects the control terminal of external breaker to be tested with leakage tests module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820510353.XU CN207965077U (en) | 2018-04-11 | 2018-04-11 | The test device of the external breaker of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820510353.XU CN207965077U (en) | 2018-04-11 | 2018-04-11 | The test device of the external breaker of electric energy meter |
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| Publication Number | Publication Date |
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| CN207965077U true CN207965077U (en) | 2018-10-12 |
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ID=63727597
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| CN201820510353.XU Active CN207965077U (en) | 2018-04-11 | 2018-04-11 | The test device of the external breaker of electric energy meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567856A (en) * | 2021-08-31 | 2021-10-29 | 广东电网有限责任公司 | Detection device and detection method for external circuit breaker of electric energy meter |
| CN113589218A (en) * | 2021-08-06 | 2021-11-02 | 广西电网有限责任公司贵港供电局 | Action tester of external circuit breaker of cost control electric energy meter |
-
2018
- 2018-04-11 CN CN201820510353.XU patent/CN207965077U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589218A (en) * | 2021-08-06 | 2021-11-02 | 广西电网有限责任公司贵港供电局 | Action tester of external circuit breaker of cost control electric energy meter |
| CN113567856A (en) * | 2021-08-31 | 2021-10-29 | 广东电网有限责任公司 | Detection device and detection method for external circuit breaker of electric energy meter |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 411201 28 Bai Shi Road, Jing Kai District, Xiangtan, Hunan Patentee after: Weisheng Energy Technology Co.,Ltd. Address before: 411201 28 Bai Shi Road, Jing Kai District, Xiangtan, Hunan Patentee before: WASION ELECTRIC Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |