CN209311616U - A kind of simple type current protection detection illustrative circuitry - Google Patents
A kind of simple type current protection detection illustrative circuitry Download PDFInfo
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- CN209311616U CN209311616U CN201822164215.3U CN201822164215U CN209311616U CN 209311616 U CN209311616 U CN 209311616U CN 201822164215 U CN201822164215 U CN 201822164215U CN 209311616 U CN209311616 U CN 209311616U
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Abstract
The utility model discloses a kind of simple type current protections to detect illustrative circuitry, and total protector peace operational management enters failure high-incidence season when solving thunderstorm season, this brings more troubles to operation maintenance personnel, extends troubleshooting time problem.The utility model includes ammeter PA, leakage current protection device RCD, switch K and light bulb H; light bulb H includes five light bulb H1~H5; switch K includes five switch K1~K5; accordingly connect switch K of each light bulb H forms a branch; and one end connection ammeter PA after five branch circuit parallel connections, the other end after five branch circuit parallel connections pass through any end in A, B of conducting wire connection leakage current protection device RCD, C-terminal, the inlet wire N-terminal of ammeter PA connection leakage current protection device RCD；Ammeter PA, switch K, light bulb H and leakage current protection device RCD forming circuit, and size of current is controlled by the various combination of switch K and judges the quality before leakage current protection device RCD installation and progress trip protection.
Description
Technical field
The utility model relates to detection circuit technical fields, and in particular to a kind of simple type current protection detection demonstrating electrical
Road.
Background technique
Annual late spring, with the arrival of thunderstorm season, total protector peace operational management enters failure high-incidence season, this gives O&M
Personnel bring more troubles, extend troubleshooting time, and operation maintenance personnel need to increase operating procedure and increase judgment
Power supply fraction is improved as much as possible.
Therefore, in order to reduce employee's operating procedure and increase judgement, power supply fraction is improved as far as possible, shortens failure
The time is excluded, we are badly in need of a kind of simple type current protection detection illustrative circuitry and reach view based on the basic performance of total protector
Feel intuitive and easy to operate, using the method for bypass in conjunction with mA (milliampere) grade ammeter, is controlled using the corresponding switch combination of light bulb
Electric current judges each mutually in due course tripping current in turn, if tripping, detection earth leakage protective device are arranged whether appropriate, operation teaching, protect
It protects device and visually demonstrates purpose using safe drumbeating, operation maintenance personnel is promoted reliably to grasp the O&M common sense of total protector.
Utility model content
The technical problem to be solved by the utility model is to total protector peace operational management enters failure height when thunderstorm season
Send out season, this brings more troubles to operation maintenance personnel, extend troubleshooting time, operation maintenance personnel need to increase operating procedure and
The problem of increasing judgment to improve power supply fraction as much as possible, the utility model provides a kind of letter to solve the above problems
Easy type current protection detects illustrative circuitry, using the corresponding switch combination control electric current of light bulb and then judges that each phase trips electricity in due course
Stream, if whether appropriate, operation teaching is arranged in tripping, detection earth leakage protective device, and protector visually demonstrates mesh using safe drumbeating
, promote operation maintenance personnel reliably to grasp the O&M common sense of total protector.
The utility model is achieved through the following technical solutions:
A kind of simple type current protection detects illustrative circuitry, including ammeter PA, leakage current protection device RCD, switch K and
Light bulb H, the leakage current protection device RCD include the end A, the end B, C-terminal and N-terminal a total of four terminals, and the light bulb H includes five
A light bulb H1~H5, the switch K include five switch K1~K5, and each light bulb H accordingly connects the switch K
A branch is formed, and after one end after five branch circuit parallel connections connects the ammeter PA, five branch circuit parallel connections
The other end connects A, B of the leakage current protection device RCD, any end in C-terminal, the ammeter PA connection by conducting wire
The inlet wire N-terminal of the leakage current protection device RCD；The ammeter PA, the switch K, the light bulb H and the leakage current
Protector RCD forming circuit, and size of current is controlled by the various combination of the switch K and judges that the leakage current is protected
Quality and progress trip protection before protecting device RCD installation.
The principle of the utility model above scheme is: the utility model passes through each H pairs of the light bulb using the above scheme
The switch K that connects with answering forms a branch, and one end after five branch circuit parallel connections connects the ammeter PA, five
The other end after a branch circuit parallel connection connects A, B of the leakage current protection device RCD, any one in C-terminal by conducting wire
End, the ammeter PA connect the inlet wire N-terminal of the leakage current protection device RCD, make the ammeter PA, the switch K, institute
The connection forming circuit for stating the light bulb H and leakage current protection device RCD, then by the various combination of five switch K
The size of control loop electric current, loop current size shown by the ammeter PA real-time and precise, five switches
Various combination controls electric current in 23~1500mA, and different switch combinations realize the mistake that electric current is gradually increased from 23mA in circuit
The size of journey, electric current is intuitively embodied also by the light levels of the correspondence light bulb H, when circuit is more than in circuit
It is produced in the primary coil of detection of electrical leakage element (residual current transformer) when 1500mA in leakage current protection device RCD
Residual current, and then leakage current protection device RCD will be performed in accordance with trip protection, protect personal safety；It can also judge
Quality before the leakage current protection device RCD installation, facilitates operation teaching to use safe drumbeating straight with current protector is reached
Demonstration purpose is seen, operation maintenance personnel is promoted reliably to grasp the O&M common sense of total protector；The utility model structure is simple, operation side
Just, convenient intuitive and at low cost, Function detection and adjustment data actual measurement are carried out before can installing to current protector,
The Function detection that can be carried out tripping current protector electric leakage movement, is suitble to promote the use in company's rural power grids.
Further, the light bulb H1 tandem tap K1, the light bulb H2 tandem tap K2, the light bulb H3 tandem tap
K3, the light bulb H4 tandem tap K4, the light bulb H5 tandem tap K5, Convenient switch and light bulb control control one by one.
Further, five light bulb H successively use the H1 to be for 5W, H2 15W, H3 25W, H4 100W, H5
The light bulb of 200W, such bulb power setting guarantee that the various combination adjustment control loop electric current of five light bulb H is arrived 23
Between 1500mA, in the closed circuit, the combination of each electric appliances of combine analog of five light bulb H rises in the closed circuit
To the effect of resistance, increase electric current in circuit by playing the role of to the parallel connection that light bulb combines, and then facilitate in adjustment circuit
Circuit gradually changes.
Further, the ammeter PA is using peace grade ammeter, preferably milliampere grade ammeter, and milliampere grade ammeter is not
Need to measure current direction and it is of less demanding to measurement accuracy when, milliampere grade ammeter can replace sensitive ammeter and use, only
It is to indicate size of current with milliampere.
Further, the leakage current protection device RCD uses single phase poaer supply earth leakage protective device or three-phase electric leakage protection
Device, it is preferable that the leakage current protection device RCD uses model ZSLL1- 250, when electric leakage and electric shock occur in circuit, and
When reaching action current value defined by current protector, protected with regard to acting automatic trip within the time of restriction immediately.
The utility model has the following advantages and benefits:
1, in 23~1500mA, different switch combinations realize back the utility model five switch combination control electric currents
The process that electric current is gradually increased from 23mA in road, the size of electric current also by the correspondence light bulb H light levels intuitively body
Reveal and, leakage current protection device RCD will be performed in accordance with trip protection when circuit has been more than 1500mA in circuit, protection
Personal safety；
2, the utility model may determine that the quality before leakage current protection device RCD installation, facilitate operation teaching and
Reach current protector and visually demonstrate purpose using safe drumbeating, the O&M for promoting operation maintenance personnel reliably to grasp total protector is normal
Know；
3, the utility model structure is simple and convenient to operate, convenient intuitive and at low cost, can be installed to current protector
Preceding progress Function detection and adjustment data actual measurement, also can be carried out the Function detection of tripping current protector electric leakage movement, will
It is promoted the use in company's rural power grids.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the detection circuit figure of the utility model.
Fig. 2 is the detection circuit figure of the closure switch K1 of the utility model.
The detection circuit figure of closure switch K1 and switch K2 while Fig. 3 is the utility model.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment
As shown in Figure 1 to Figure 3, a kind of simple type current protection detects illustrative circuitry, including ammeter PA, leakage current are protected
Shield device RCD, switch K and light bulb H, the leakage current protection device RCD include the end A, the end B, C-terminal and N-terminal a total of four terminals,
The end A, the end B, C-terminal are firewire, and N-terminal is zero curve, and the light bulb H includes that five light bulbs H1~H5, the switch K are opened including five
Close K1~K5, each light bulb H accordingly connects the switch K one branch of formation, and five branch circuit parallel connections
One end afterwards is connected the other end after the ammeter PA, five branch circuit parallel connections by conducting wire and connects the leakage by conducting wire
Any end in A, B of electric current protector RCD, C-terminal, the ammeter PA connect the leakage current protection by conducting wire
The inlet wire N-terminal of device RCD；The ammeter PA, the switch K, the light bulb H and the leakage current protection device RCD are formed back
Road, and controlled before size of current judges that the leakage current protection device RCD is installed by the various combination of the switch K
Quality and progress trip protection.
In the present embodiment, the ammeter PA uses milliampere grade ammeter, and the leakage current protection device RCD is using remaining
Current protection open circuit, and model ZSLL1- 250, residual current protecting open circuit is that (i.e. residual current is mutual by detection of electrical leakage element
Sensor) characteristic come what is determined, residual current transformer has a ring-shaped core, is wound with secondary coil, primary coil on iron core
It is exactly the conducting wire across iron core inner hole, in normal electricity consumption, if three-phase electricity consumption is balance, three-phase current is in mutual inductor
The magnetic field of generation is just offset, and is at this moment not no electric current on zero curve, and when electric shock accidents or injustice are occurred in protection circuit
When weighing apparatus electric leakage, the sum of each current in wire phasor is not zero in primary coil, generates residual current, and residual current generates in the core
Alternating flux induces electromotive force in secondary coil, and when electric current is amplified to action current setting valve through amplifier, buckle releaser is dynamic
Work makes main switch in time rating internal cutting off power supply.
The light bulb H1 tandem tap K1, the light bulb H2 tandem tap K2, the light bulb H3 tandem tap K3, the lamp
H4 tandem tap K4, the light bulb H5 tandem tap K5 are steeped, Convenient switch and light bulb control control one by one；Five light bulb H
The light bulb that H1 is 200W for 5W, H2 15W, H3 25W, H4 100W, H5 is successively used, such bulb power setting guarantees
The various combination adjustment control loop electric current of five light bulb H 23 between 1500mA, in the closed circuit, five light bulbs
The combination of each electric appliances of the combine analog of H, plays the role of resistance in the closed circuit, by playing to the parallel connection that light bulb combines
Increase the effect of electric current in circuit, and then circuit in adjustment circuit is facilitated to gradually change.
In embodiment, five light bulb H according to the sequence from H1~H5 are individually closed corresponding switch K1~K5 and with differences
Combined mode is closed at corresponding switch K1~K5 and (for example is closed at K1, K2, is closed at K1, K3, and successively class
Push away) size of carrying out electric current in measure loop, in the circuit of 220V voltage, such as: as shown in Fig. 2, closure switch K1, in circuit
The electric current detected be 5W/220V=0.023A (i.e. 23mA)；The switch of various combination is closed as shown in figure 3, being same in Fig. 3
When closure switch K1 and switch K2, the case where other are combined similar, the light bulb in circuit when the correspondence of various combination closes the switch
Power reach 330W when, 330W/220V=1.5A (i.e. 1500mA), 23mA and 1500mA are intermediate as two endpoint values
Value realizes control process by different switch combinations.
Working principle is: by the size of the various combination control loop electric current of five switch K, loop current size
It is shown by the ammeter PA real-time and precise, the various combination control electric current of five switches is in 23~1500mA, no
The process that electric current is gradually increased from 23mA in circuit is realized with switch combination, the size of electric current is also by the correspondence light bulb H
Light levels intuitively embody, the electric leakage when circuit has been more than 1500mA in circuit in leakage current protection device RCD
Residual current is produced in the primary coil of detecting element (i.e. residual current transformer), and then leakage current protection device RCD is just
It can be performed in accordance with trip protection, protect personal safety；The utility model structure is simple and convenient to operate, convenient intuitive, and cost
It is low, Function detection and adjustment data actual measurement are carried out before can installing to current protector, also can be carried out tripping current protection
The Function detection of device electric leakage movement, is suitble to promote the use in company's rural power grids.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of simple type current protection detects illustrative circuitry, it is characterised in that: including ammeter PA, leakage current protection device
RCD, switch K and light bulb H, the leakage current protection device RCD include the end A, the end B, C-terminal and N-terminal a total of four terminals, described
Light bulb H includes five light bulb H1~H5, and the switch K includes five switch K1~K5, and each light bulb H accordingly connects one
A switch K forms a branch, and one end after five branch circuit parallel connections connects the ammeter PA, five branch
The other end after road is in parallel connects A, B of the leakage current protection device RCD, any end in C-terminal, the electricity by conducting wire
Flow table PA connects the inlet wire N-terminal of the leakage current protection device RCD；The ammeter PA, the switch K, the light bulb H and institute
Leakage current protection device RCD forming circuit is stated, and is controlled described in size of current judgement by the various combination of the switch K
Quality and progress trip protection before leakage current protection device RCD installation.
2. a kind of simple type current protection according to claim 1 detects illustrative circuitry, it is characterised in that: the light bulb H1
Tandem tap K1, the light bulb H2 tandem tap K2, the light bulb H3 tandem tap K3, the light bulb H4 tandem tap K4, institute
State light bulb H5 tandem tap K5.
3. a kind of simple type current protection according to claim 2 detects illustrative circuitry, it is characterised in that: five lamps
Bubble H successively uses the light bulb that H1 is 200W for 5W, H2 15W, H3 25W, H4 100W, H5.
4. a kind of simple type current protection according to claim 1 detects illustrative circuitry, it is characterised in that: the ammeter
PA is using peace grade ammeter.
5. a kind of simple type current protection as claimed in any of claims 1 to 4 detects illustrative circuitry, feature exists
In: the leakage current protection device RCD uses single phase poaer supply earth leakage protective device or three-phase electric leakage protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822164215.3U CN209311616U (en) | 2018-12-20 | 2018-12-20 | A kind of simple type current protection detection illustrative circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822164215.3U CN209311616U (en) | 2018-12-20 | 2018-12-20 | A kind of simple type current protection detection illustrative circuitry |
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| Publication Number | Publication Date |
|---|---|
| CN209311616U true CN209311616U (en) | 2019-08-27 |
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ID=67678112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822164215.3U Active CN209311616U (en) | 2018-12-20 | 2018-12-20 | A kind of simple type current protection detection illustrative circuitry |
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| Country | Link |
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| CN (1) | CN209311616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764018A (en) * | 2019-10-16 | 2020-02-07 | 六安市国能光电照明有限公司 | High-power LED lamp leakage screening instrument |
| CN114362098A (en) * | 2021-12-31 | 2022-04-15 | 上海电力大学 | Low-voltage direct-current distribution network human body protection method based on residual current |
-
2018
- 2018-12-20 CN CN201822164215.3U patent/CN209311616U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764018A (en) * | 2019-10-16 | 2020-02-07 | 六安市国能光电照明有限公司 | High-power LED lamp leakage screening instrument |
| CN114362098A (en) * | 2021-12-31 | 2022-04-15 | 上海电力大学 | Low-voltage direct-current distribution network human body protection method based on residual current |
| CN114362098B (en) * | 2021-12-31 | 2023-12-15 | 上海电力大学 | Residual current-based low-voltage direct-current distribution network human body protection method |
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