CN209562141U - Power-on automatic detection leakage protector - Google Patents
Power-on automatic detection leakage protector Download PDFInfo
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- CN209562141U CN209562141U CN201920053427.6U CN201920053427U CN209562141U CN 209562141 U CN209562141 U CN 209562141U CN 201920053427 U CN201920053427 U CN 201920053427U CN 209562141 U CN209562141 U CN 209562141U
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- sequence current
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- zero sequence
- automatic detection
- mutual inductor
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- 238000001514 detection method Methods 0.000 title claims abstract description 65
- 230000001012 protector Effects 0.000 title abstract description 4
- 238000007689 inspection Methods 0.000 claims abstract description 7
- 230000006386 memory function Effects 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 31
- 239000003990 capacitor Substances 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model discloses a go up electric automatic detection's earth-leakage protector, establish the zero sequence current transformer TA on phase line and zero line including the cover, zero sequence current transformer TA power side is connected with the main switch KM1 of control phase line and zero line break-make, connect current limiting resistor R, automated inspection switch on the phase line between zero sequence current transformer TA power side and the main switch KM1 in order, the automated inspection switch other end is connected with zero sequence current transformer TA load side zero line, zero sequence current transformer TA secondary coil output is connected with zero sequence current signal processor in order and has the controller of power failure memory function, the controller is connected with the automated inspection switch driver that is used for driving the automated inspection switch break-make, is used for controlling the trip gear of main switch KM1 disconnection when zero sequence current signal processor detects zero sequence current.
Description
[technical field]
The earth leakage protective device detected automatically is powered on the utility model relates to a kind of.
[background technique]
As electricity consumption, electrical disaster caused by improper or line electrical leakage happens occasionally in daily production and life, causes
Immeasurable casualties and property loss.It is to avoid physical electrical shock fire protection injures and deaths that earth leakage protective device is installed in low-voltage distribution system
The effective measures of electrical fire caused by accident and electric leakage, electrical equipment damage accident.The electrical installation of most countries is advised
Range request regularly detects the performance of protector, China's electric power safety regulation, and earth leakage protective device will carry out once at least every month
Whether detection, verifying creepage protection function are normal.But it has more than 90% user there is no periodic detection as required, wind
Danger can not be underestimated.
[utility model content]
The utility model overcomes the deficiency of above-mentioned technology, provides a kind of earth leakage protective device for powering on and detecting automatically.
To achieve the above object, the utility model uses following technical proposal:
It is a kind of to power on the earth leakage protective device detected automatically, it include the zero sequence current mutual inductor being set in phase line and zero curve
TA, the zero sequence current mutual inductor TA source side are connected with the main switch KM1 of control phase line and zero curve on-off, the zero-sequence current
Limited leakage resistance R is sequentially connected between mutual inductor TA source side and main switch KM1 in phase line, for powering on automatic detection when triggering
Zero sequence current mutual inductor TA is set to generate the automatic detection switch 1 of zero-sequence current, automatic 1 other end of detection switch and zero sequence
The connection of current transformer TA load-side zero curve, the zero sequence current mutual inductor TA secondary coil output end have been sequentially connected with zero sequence electricity
Signal processor 2 and the controller 3 with power-failure memory function are flowed, the controller 3 is connected with for driving automatic detection to open
Close the automatic detection switch driver 4 of 1 on-off, for controlling master when zero sequence current signal processor 2 detects zero-sequence current
The trip gear 5 that switch KM1 is disconnected.
The controller 3 is connected with the sound for carrying out sound-light alarm when trip gear 5 cannot be such that main switch KM1 disconnects
Light crossing-signal 6.
The zero sequence current mutual inductor TA load-side phase line is connected with the power circuit 7 for powering to controller 3.
The automatic detection switch 1 is thyristor Q1, and thyristor Q1 positive terminal is connect with current-limiting resistance R, and thyristor Q1 is negative
Extremely connect respectively with zero sequence current mutual inductor TA load-side zero curve, the one end capacitor C1, the capacitor C1 other end respectively with thyristor
Q1 gate terminal, the connection of automatic detection switch driver 4.
The automatic detection switch 1 is the mechanical switch KM2 driven by automatic detection switch driver 4.
It is a kind of to power on the earth leakage protective device detected automatically, it include the zero sequence current mutual inductor being set in phase line and zero curve
TA, the zero sequence current mutual inductor TA load-side are connected with the main switch KM1 of control phase line and zero curve on-off, the zero-sequence current
Limited leakage resistance R is sequentially connected in mutual inductor TA source side phase line, for powering on automatic detection when triggering make zero sequence current mutual inductance
Device TA generates the automatic detection switch 1 of zero-sequence current, between the zero sequence current mutual inductor TA load-side zero curve and main switch KM1
Zero curve is connect with automatic 1 other end of detection switch, and the zero sequence current mutual inductor TA secondary coil output end has been sequentially connected with zero
Sequence current signal processor 2 and controller 3 with memory function, the controller 3 are connected with that be set to main switch KM1 negative
Carry main switch on-off detector, the automatic inspection for driving automatic 1 on-off of detection switch that side is used to detect main switch KM1 on-off
Survey switch driver 4, for controlling the de- of main switch KM1 disconnection when zero sequence current signal processor 2 detects zero-sequence current
Buckle device 5.
The controller 3 is connected with the sound for carrying out sound-light alarm when trip gear 5 cannot be such that main switch KM1 disconnects
Light crossing-signal 6.
The zero sequence current mutual inductor TA source side phase line is connected with the power circuit 7 for powering to controller 3.
The automatic detection switch 1 is thyristor Q1, and thyristor Q1 positive terminal is connect with current-limiting resistance, thyristor Q1 cathode
End connect respectively with zero sequence current mutual inductor TA load-side zero curve, the one end capacitor C1, the capacitor C1 other end respectively with thyristor Q1
Gate terminal, the connection of automatic detection switch driver 4.
The automatic detection switch 1 is the mechanical switch KM2 of automatic detection switch driver 4 driving.
The beneficial effects of the utility model are:
1, earth leakage protective device is detected automatically when the utility model can power on.
2, structure is simple, easy to manufacture, at low cost.
[Detailed description of the invention]
Fig. 1 is one structural schematic diagram of the utility model embodiment；
Fig. 2 is two structural schematic diagram of the utility model embodiment；
Fig. 3 is three structural schematic diagram of the utility model embodiment；
Fig. 4 is four structural schematic diagram of the utility model embodiment.
Power supply line symbol description in figure: L is phase line, and N is zero curve, and PE is ground wire.
[specific embodiment]
The technical solution of the utility model embodiment is explained below with reference to the attached drawing of the utility model embodiment and
Illustrate, but following embodiments are only the preferred embodiment of the utility model, and not all.Based on the implementation example in the implementation mode,
Those skilled in the art's obtained other embodiments without making creative work, belong to the guarantor of the utility model
Protect range.
Embodiment one:
As shown in Figure 1, a kind of power on the earth leakage protective device detected automatically, it include the zero sequence being set in phase line and zero curve
Current transformer TA, the zero sequence current mutual inductor TA source side are connected with the main switch KM1 of control phase line and zero curve on-off, institute
It states phase line between zero sequence current mutual inductor TA source side and main switch KM1 and is sequentially connected with limited leakage resistance R, for powering on automatic inspection
Triggering makes the automatic detection switch 1 of zero sequence current mutual inductor TA generation zero-sequence current, automatic 1 other end of detection switch when survey
It is connect with zero sequence current mutual inductor TA load-side zero curve, the zero sequence current mutual inductor TA secondary coil output end has been sequentially connected with
Zero sequence current signal processor 2 and the controller 3 that Electricity Functional is once gone up with power-failure memory, the controller 3, which is connected with, to be used for
Drive the automatic detection switch driver 4 of automatic 1 on-off of detection switch, for detecting zero in zero sequence current signal processor 2
The trip gear 5 that main switch KM1 is disconnected is controlled when sequence electric current.
Wherein, the controller 3 is connected with for carrying out acousto-optic report when trip gear 5 cannot be such that main switch KM1 disconnects
Alert combined aural and visual alarm 6.
The automatic detection switch 1 is the mechanical switch KM2 of automatic detection switch driver 4 driving.
Operation manual handle closes main switch KM1 when per secondary electricity consumption, and contact closure realization once powers on, and controller 3 is controlled
It makes automatic detection switch driver 4 and drives mechanical switch KM2 closure, electric current flows to zero curve from phase line L by current-limiting resistance R at this time
N, zero sequence current mutual inductor TA export remaining zero-sequence current after the processing of zero sequence current signal processor 2, export and touch to controller 3
It signals, controller 3, which exports trip signal, makes trip gear 5 thread off, and disconnects the contact main switch KM1, that is, illustrates earth leakage protective
Device is normal, while 3 power-failure memory of controller has been realized and once powered on, and then operation manual handle closes main switch KM1 again, touches
Point closure realization is secondary to be powered on, and controller 3, which controls automatic detection switch driver 4, at this time makes automatic detection switch 1 disconnect shape
State and eliminate power on memory, user can start electricity consumption；Similarly, power off backward after, user needs the secondary main switch KM1 that closes to power on
It can start electricity consumption.
If controller 3 controls the automatic driving of detection switch driver 4 mechanical switch KM2 closure, main switch KM1 is not jumped
Lock, contact do not turn off, and are still the state of closing, and have voltage in load, i.e. earth leakage protective device breaks down, and controller 3 controls at this time
Combined aural and visual alarm 6 carries out sound-light alarm.
Triggering makes zero when being connected with manual detection between the current-limiting resistance R and zero sequence current mutual inductor TA load-side zero curve
Sequence current transformer TA generates the manual detection switch SB of zero-sequence current, and user can also be by triggering manual detection switch SB to leakage
Non-electricity protector is detected manually, and after similarly triggering manual detection switch SB, electric current flows to zero from phase line L by current-limiting resistance R
Line N, zero sequence current mutual inductor TA export residual current after the processing of zero sequence current signal processor 2, export and trigger to controller 3
Signal, controller 3, which exports trip signal, makes trip gear 5 thread off, and disconnects the contact main switch KM1, that is, illustrates earth leakage protective device
Normally；If main switch KM1 does not trip, contact is not turned off, i.e., earth leakage protective device breaks down, and controller 3 controls acousto-optic report at this time
Alert device 6 carries out sound-light alarm.
After manual detection, when closing main switch KM1 manually, also need once to be powered on automatic detection, it is secondary to power on
It can use.
The zero sequence current mutual inductor TA load-side phase line is connected with the power circuit 7 for powering to controller 3.
Embodiment two:
As shown in Fig. 2, the automatic detection switch 1 is thyristor Q1, thyristor Q1 positive terminal is connect with current-limiting resistance, brilliant
Brake tube Q1 negative pole end is connect with zero sequence current mutual inductor TA load-side zero curve, the one end capacitor C1 respectively, capacitor C1 other end difference
It is connect with thyristor Q1 gate terminal, automatic detection switch driver 4.
It is distinguished with embodiment one and is to close using the triggering and conducting substitution contact relay mechanical switch KM2 of thyristor Q1
Conducting is closed, can prevent the frequent on-off of mechanical contact from influencing the service life.
Embodiment three:
As shown in figure 3, a kind of power on the earth leakage protective device detected automatically, it include the zero sequence being set in phase line and zero curve
Current transformer TA, the zero sequence current mutual inductor TA load-side are connected with the main switch KM1 of control phase line and zero curve on-off, institute
State zero sequence current mutual inductor TA source side phase line be sequentially connected with limited leakage resistance R, for powering on automatic detection when triggering make zero sequence
Current transformer TA generates the automatic detection switch 1 of zero-sequence current, and the zero sequence current mutual inductor TA load-side zero curve is opened with master
It closes zero curve between KM1 to connect with automatic 1 other end of detection switch, the zero sequence current mutual inductor TA secondary coil output end is suitable
Secondary to be connected with zero sequence current signal processor 2 and the controller 3 with the primary upper Electricity Functional of memory, the controller 3 is connected with
For driving the automatic detection switch driver 4 of automatic 1 on-off of detection switch, for being detected in zero sequence current signal processor 2
The trip gear 5 that control main switch KM1 is disconnected when to zero-sequence current.
Wherein, the controller 3 is connected with for carrying out acousto-optic report when trip gear 5 cannot be such that main switch KM1 disconnects
Alert combined aural and visual alarm 6.
The automatic detection switch 1 is the mechanical switch KM2 of automatic detection switch driver 4 driving.
Being that power circuit connects with the difference of embodiment one does not influence power circuit work after main switch KM1 is disconnected in source side
Make, therefore controller 3 is not necessarily to power-failure memory function, only need to once power on memory.
The zero sequence current mutual inductor TA source side phase line is connected with the power circuit 7 for powering to controller 3, makes to control
Device 3 processed is constantly in energized state.
Example IV:
As shown in figure 4, the automatic detection switch 1 is thyristor Q1, thyristor Q1 positive terminal is connect with current-limiting resistance, brilliant
Brake tube Q1 negative pole end is connect with zero sequence current mutual inductor TA load-side zero curve, the one end capacitor C1 respectively, capacitor C1 other end difference
It is connect with thyristor Q1 gate terminal, automatic detection switch driver 4.
It is distinguished with embodiment three and is to close using the triggering and conducting substitution contact relay mechanical switch KM2 of thyristor Q1
Conducting is closed, can prevent the frequent on-off of mechanical contact from influencing the service life.
The utility model can be applied not only to installing type earth leakage protective device, can also be applied to rail conduction earth leakage protective
Device, with earth leakage protective power outlet or insert row, with earth leakage protective mobile power socket or insert row, with earth leakage protective power supply
Plug, with earth leakage protective plug and socket of power source or insert row converter, wait in relation to single, three phase mains equipment, herein not one by one
It enumerates, it is all to belong to scope of protection of the utility model using the utility model in the earth leakage protective in relation to power supply.
Claims (10)
- It include the zero sequence current mutual inductor being set in phase line and zero curve 1. a kind of power on the earth leakage protective device detected automatically TA, the zero sequence current mutual inductor TA source side are connected with the main switch KM1 of control phase line and zero curve on-off, it is characterised in that: Limited leakage resistance R is sequentially connected between the zero sequence current mutual inductor TA source side and main switch KM1 in phase line, for powering on certainly Triggering makes the automatic detection switch (1) of zero sequence current mutual inductor TA generation zero-sequence current, the automatic detection switch when dynamic detection (1) other end is connect with zero sequence current mutual inductor TA load-side zero curve, the zero sequence current mutual inductor TA secondary coil output end It is sequentially connected with zero sequence current signal processor (2) and the controller (3) with power-failure memory function, the controller (3) is even It is connected to the automatic detection switch driver (4) for driving automatic detection switch (1) on-off, for handling in zero sequence current signal The trip gear (5) that control main switch KM1 is disconnected when device (2) detects zero-sequence current.
- 2. a kind of the earth leakage protective device detected automatically is powered on according to claim 1, it is characterised in that: the controller (3) it is connected with the combined aural and visual alarm (6) for carrying out sound-light alarm when trip gear (5) cannot be such that main switch KM1 disconnects.
- 3. a kind of the earth leakage protective device detected automatically is powered on according to claim 1, it is characterised in that: the zero-sequence current Mutual inductor TA load-side phase line is connected with the power circuit (7) for powering to controller (3).
- 4. a kind of the earth leakage protective device detected automatically is powered on according to claim 1, it is characterised in that: the automatic detection Switching (1) is thyristor Q1, and thyristor Q1 positive terminal connect with current-limiting resistance R, thyristor Q1 negative pole end respectively with zero-sequence current Mutual inductor TA load-side zero curve, the connection of the one end capacitor C1, the capacitor C1 other end are opened with thyristor Q1 gate terminal, automatic detection respectively Close driver (4) connection.
- 5. a kind of the earth leakage protective device detected automatically is powered on according to claim 1, it is characterised in that: the automatic detection Switching (1) is the mechanical switch KM2 driven by automatic detection switch driver (4).
- It include the zero sequence current mutual inductor being set in phase line and zero curve 6. a kind of power on the earth leakage protective device detected automatically TA, the zero sequence current mutual inductor TA load-side are connected with the main switch KM1 of control phase line and zero curve on-off, it is characterised in that: Limited leakage resistance R is sequentially connected in the zero sequence current mutual inductor TA source side phase line, for powering on automatic detection when triggering make Zero sequence current mutual inductor TA generates the automatic detection switch (1) of zero-sequence current, the zero sequence current mutual inductor TA load-side zero curve Zero curve is connect with automatic detection switch (1) other end between main switch KM1, and the zero sequence current mutual inductor TA secondary coil is defeated Outlet is sequentially connected with zero sequence current signal processor (2) and the controller (3) with memory function, and the controller (3) is even It is connected to and is set to main switch KM1 load-side for detecting the main switch on-off detector of main switch KM1 on-off, automatic for driving The automatic detection switch driver (4) of detection switch (1) on-off is used to detect zero sequence in zero sequence current signal processor (2) The trip gear (5) that main switch KM1 is disconnected is controlled when electric current.
- 7. a kind of the earth leakage protective device detected automatically is powered on according to claim 6, it is characterised in that: the controller (3) it is connected with the combined aural and visual alarm (6) for carrying out sound-light alarm when trip gear (5) cannot be such that main switch KM1 disconnects.
- 8. a kind of the earth leakage protective device detected automatically is powered on according to claim 6, it is characterised in that: the zero-sequence current Mutual inductor TA source side phase line is connected with the power circuit (7) for powering to controller (3).
- 9. a kind of the earth leakage protective device detected automatically is powered on according to claim 6, it is characterised in that: the automatic detection Switching (1) is thyristor Q1, and thyristor Q1 positive terminal is connect with current-limiting resistance, and thyristor Q1 negative pole end is mutual with zero-sequence current respectively Sensor TA load-side zero curve, the one end capacitor C1 connection, the capacitor C1 other end respectively with thyristor Q1 gate terminal, automatic detection switch Driver (4) connection.
- 10. a kind of the earth leakage protective device detected automatically is powered on according to claim 6, it is characterised in that: the automatic inspection Survey the mechanical switch KM2 that switch (1) is the driving of automatic detection switch driver (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920053427.6U CN209562141U (en) | 2019-01-14 | 2019-01-14 | Power-on automatic detection leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920053427.6U CN209562141U (en) | 2019-01-14 | 2019-01-14 | Power-on automatic detection leakage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209562141U true CN209562141U (en) | 2019-10-29 |
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ID=68306097
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920053427.6U Expired - Fee Related CN209562141U (en) | 2019-01-14 | 2019-01-14 | Power-on automatic detection leakage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209562141U (en) |
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2019
- 2019-01-14 CN CN201920053427.6U patent/CN209562141U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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Granted publication date: 20191029 Termination date: 20220114 |