CN216053516U - TN-S electricity standard photoelectric demonstration device - Google Patents
TN-S electricity standard photoelectric demonstration device Download PDFInfo
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- CN216053516U CN216053516U CN202122332143.0U CN202122332143U CN216053516U CN 216053516 U CN216053516 U CN 216053516U CN 202122332143 U CN202122332143 U CN 202122332143U CN 216053516 U CN216053516 U CN 216053516U
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Abstract
The utility model relates to a TN-S electricity utilization specification photoelectric demonstration device, which comprises a demonstration board and a power supply battery arranged in the demonstration board; the rear panel surface of the display panel is provided with a transformer connected with a power supply battery, and the front panel surface is provided with a main distribution box, a switch box and simulation equipment which are sequentially connected with the transformer; the inner walls of the main distribution box, the distribution box and the switch box are provided with PE terminals and woven annealed copper wires connected with the PE terminals; a voltmeter, an ammeter, an electroplating meter and a first main isolating switch, a first leakage protector and a first branch isolating switch which are sequentially connected with the transformer are arranged in the main distribution box; a second main isolating switch, a second leakage protector and a second sub isolating switch which are sequentially connected with the first sub isolating switch are arranged in the distribution box; the single-phase switch box is internally provided with a single-phase switch and a third leakage protector which are sequentially connected with the second isolating switch, and the three-phase switch box is internally provided with a three-phase switch and a fourth leakage protector which are sequentially connected with the second isolating switch.
Description
Technical Field
The utility model relates to the technical field of construction demonstration devices, in particular to a TN-S electricity utilization specification photoelectric demonstration device.
Background
The TN-S power supply system is a low-voltage power distribution system, and when the TN-S system is directly grounded at a neutral point of a power supply battery, an exposed conductive part of electrical equipment is grounded through a zero line to form a zero connection protection system. N is the working zero line, PE is the special protection earth connection, namely the equipment shell is connected to PE.
The TN-S power supply system has the following characteristics: (1) when the system normally operates, the special protection line has no current, but has unbalanced current on the working zero line; the PE wire has no voltage to the ground, so that the metal shell of the electrical equipment is connected to the special protection wire PE for zero connection protection, and the safety and the reliability are realized; (2) the working zero line is only used as a single-phase lighting load loop; (3) the special protection line PE does not break and does not enter the leakage switch.
In order to facilitate the study of TN-S electricity utilization specifications and the accurate operation, constructors need to be trained to ensure the accuracy during construction and the electricity utilization safety. The prior art does not relate to a TN-S electricity utilization standard photoelectric demonstration device, can not vividly demonstrate for constructors, and has low training efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a TN-S electricity utilization specification photoelectric demonstration device, and solves the technical problem that the training efficiency of constructors is not high due to the fact that the TN-S electricity utilization specification photoelectric demonstration device is missing in the prior art.
The utility model specifically adopts the following technical scheme for realizing the purpose:
a TN-S electricity utilization specification photoelectric demonstration device comprises a demonstration board and a power supply battery arranged in the demonstration board; the rear panel surface of the display panel is provided with a transformer electrically connected with the power supply battery, and the front panel surface is provided with a main distribution box, a switch box and simulation equipment which are sequentially connected with the transformer; the bottoms of the main distribution box and the distribution box are respectively provided with a PE terminal and a zero wiring end, the bottom of the switch box is provided with a PE terminal, and the inner walls of the main distribution box, the distribution box and the switch box are respectively provided with a braided annealed copper wire connected with the PE terminal;
a voltmeter, an ammeter, an electroplating meter and a first main isolating switch, a first leakage protector and a first branch isolating switch which are sequentially electrically connected with the transformer are arranged in the main distribution box; a second main isolating switch, a second leakage protector and a second sub isolating switch which are sequentially connected with the first sub isolating switch are arranged in the distribution box; the switch box comprises a single-phase switch box and a three-phase switch box, wherein a single-phase switch and a third leakage protector which are sequentially connected with the second isolating switch are arranged in the single-phase switch box, and a three-phase switch and a fourth leakage protector which are sequentially electrically connected with the second isolating switch are arranged in the three-phase switch box; the simulation equipment comprises single-phase electric equipment connected with the third leakage protector and three-phase electric equipment connected with the fourth leakage protector.
Furthermore, the voltmeter, the ammeter and the electroplating meter are connected between the transformer and the first main isolating switch; the three phase lines connected out by the transformer are connected to the first total isolating switch, and the PE line is connected to the PE terminal of the total distribution box; the N line connected out of the transformer and the three-phase line connected out of the first main isolating switch are connected to the first leakage protector; the N line that first earth-leakage protector connects out is connected to the zero wiring end of total block terminal, and the three-phase line that connects out is connected to first branch isolator.
Furthermore, the three-phase line connected out by the first sub-isolating switch is connected to the second main isolating switch, and the PE terminal of the main distribution box is connected to the PE terminal of the distribution box; the three-phase line connection connected out of the second main isolating switch and the N line connected out of the main distribution box are both connected to the second leakage protector; and the N line connected out by the second leakage protector is connected to a zero wiring terminal of the distribution box, and the three-phase line connected out is connected to the second shunt isolating switch.
Further, the PE terminals of the distribution box are connected to the PE terminals of the single-phase switch box and the three-phase switch box, respectively.
Furthermore, when the distribution box is connected to the single-phase switch box, one of the three phase lines connected out by the second isolating switch and the N line connected out by the distribution box are sequentially connected to the single-phase switch and the third leakage protector.
Further, when the distribution box is connected to a three-phase switch box; and the three phase lines connected out by the second shunt isolating switch are sequentially connected to the three-phase switch and the fourth leakage protector.
Further, the single-phase electric equipment is a bulb or a fan.
Further, the three-phase electric equipment is a three-phase motor.
Furthermore, the main distribution box is arranged on one side of the display board, and the distribution box, the switch box and the simulation equipment are arranged on the other side of the display board; the switch box is close to the simulation equipment, and a distance marking line is arranged between the switch box and the simulation equipment.
The utility model has the following beneficial effects:
1. the display board is simple in structure, components such as a total distribution box, a distribution box and a switch box which are required by TN-S power utilization specifications are arranged on the front board surface of the display board, the components in the components are connected according to the requirements of a TN-S circuit, single-phase electric equipment and three-phase electric equipment are arranged behind the switch box, and the characteristics of the TN-S circuit and the power utilization specifications can be cleaned and demonstrated through a wiring mode and the work of the electric equipment, so that the training efficiency of constructors is improved;
2. the distribution electric box, the switch box and the simulation equipment are arranged together, and the distance marked lines are arranged between the simulation equipment and the switch box, so that the requirements of TN-S power utilization specifications are met, and constructors can know the relative position relation among the total distribution box, the distribution electric box, the switch box and the equipment in the TN-S circuit specifications.
Drawings
FIG. 1 is a schematic diagram of a TN-S electro-optical demonstration device;
FIG. 2 is a circuit connection diagram in the TN-S electro-optical demonstration device;
reference numerals: 1-display board, 2-power supply battery, 3-transformer, 4-total distribution box, 41-ammeter, 42-voltmeter, 43-watt-hour meter, 44-first total isolating switch, 45-first leakage protector, 46-first branch isolating switch, 5-distribution box, 51-second total isolating switch, 52-second leakage protector, 53-second branch isolating switch, 6-switch box, 61-single-phase switch box, 611-one-way switch, 612-third leakage protector, 62-three-phase switch box, 621-three-phase switch, 622-fourth leakage protector, 7-analog device, 71-single-phase electric equipment and 72-three-phase electric equipment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
A TN-S electricity utilization specification photoelectric demonstration device is shown in figure 1, and comprises a display board 1 and a power supply battery 2 arranged in the display board 1, wherein the power supply battery 2 is a rechargeable battery, and a charging interface for charging the power supply battery 2 is arranged on the display board 1; the rear panel surface of the display panel 1 is provided with a transformer 3 electrically connected with the power supply battery 2, and the front panel surface is provided with a main distribution box 4, a distribution box 5, a switch box 6 and a simulation device 7 which are sequentially connected with the transformer 3; total block terminal 4, distribution box 5 bottom all are equipped with PE terminal and zero wiring end, and 6 bottoms of switch box are equipped with the PE terminal, and total block terminal 4, distribution box 5 and 6 inner walls of switch box all are equipped with the annealed copper wire of weaving that is connected with the PE terminal.
It should be noted that the main distribution box 4 is arranged on one side of the display board 1, and the distribution box 5, the switch box 6 and the simulation equipment 7 are arranged on the other side of the display board 1; the switch box 6 is close to the simulation equipment 7, a distance marking is arranged between the switch box and the simulation equipment, and the distance arranged on the marking is less than 3 m; the distribution electric box 5, the switch box 6 and the simulation equipment 7 are arranged together, and distance marked lines are arranged between the simulation equipment 7 and the switch box 6, so that the requirements of TN-S power utilization specifications are met, constructors can know the relative position relation among the total distribution box, the distribution electric box, the switch box and the equipment in the TN-S circuit specifications, and the distance relation which should be arranged between the simulation equipment 7 and the switch box 6 is clear.
Referring to fig. 2 in combination with fig. 1, a voltmeter 41, an ammeter 42, a plating meter 43, and a first total isolating switch 44, a first leakage protector 45, and a first isolating switch 46 electrically connected to the transformer 3 in sequence are disposed inside the total distribution box 4, and the first total isolating switch 44 must be a switch having a breaking point that is clearly visible when broken; the voltmeter 41, the ammeter 42 and the electroplating meter 43 are connected between the transformer 3 and the first main isolating switch 44; the three phase lines connected out of the transformer 3 are connected to a first general isolating switch 44, and the PE lines are connected to the PE terminals of the general distribution box; the N line connected out of the transformer 3 and the three-phase line connected out of the first main isolating switch 44 are connected to a first leakage protector 45; the N line connected out by the first leakage protector 45 is connected to the zero terminal of the main distribution box, and the three phase lines connected out are connected to the first isolating switch 46;
a second main isolating switch 51, a second leakage protector 52 and a second sub isolating switch 53 which are sequentially connected with the first sub isolating switch 46 are arranged in the distribution box 5; the three phase lines connected out by the first sub-isolating switch 46 are connected to a second main isolating switch 51, and the PE terminal of the main distribution box is connected to the PE terminal of the distribution box; the three-phase line connection from the second main isolating switch 51 and the N line from the main distribution box are both connected to the second leakage protector 52; the N line from the second earth leakage protector 52 is connected to the zero terminal of the distribution box 5, and the three phase line from the N line is connected to the second shunt isolator 53; the PE terminals of the distribution box 5 are connected to the PE terminal of the single-phase switch box 61 and the PE terminal of the three-phase switch box 62, respectively;
the switch box 6 comprises a single-phase switch box 61 and a three-phase switch box 62, wherein the single-phase switch 611 and the third leakage protector 612 which are sequentially connected with the second isolating switch 53 are arranged in the single-phase switch box 61, and the three-phase switch 621 and the fourth leakage protector 622 which are sequentially electrically connected with the second isolating switch 53 are arranged in the three-phase switch box 62; when the distribution box 5 is connected to the single-phase switch box 61, one of the three-phase lines connected by the second isolating switch 53 and the N line connected by the distribution box 5 are sequentially connected to the single-phase switch 611 and the third leakage protector 612; when the distribution box 5 is connected to the three-phase switch box 62; the three-phase line connected out by the second isolating switch 53 is sequentially connected to the three-phase switch 621 and the fourth leakage protector 622;
the analog device 7 includes a single-phase electric device 71 connected to the third leakage protector 612 and a three-phase electric device 72 connected to the fourth leakage protector 622; the single-phase electric equipment 71 is a bulb or a fan; the three-phase electric device 72 is a three-phase motor.
The action principle of the utility model is as follows:
when demonstrating the position relationship and the distance relationship of each component in the TN-S circuit, a constructor can learn the component distance in the electricity utilization specification through the position relationship of each component on the display board 1 and the distance relationship between the components with labels;
when the connection relation and the position relation among all components and parts needing to be arranged in the components in the TN-S circuit are displayed, the box doors of the main distribution box 4, the distribution box 5 and the switch box 7 can be opened, so that constructors can clearly see the components and the position relation and the connection relation among the components arranged in the main distribution box 4, the distribution box 5 and the switch box 7, and see the connection relation among the components of the main distribution box 4, the distribution box 5 and the switch box 7;
when the TN-S circuit demonstrates, supply power to the whole circuit through the power supply battery 2, through controlling first total isolator 44, first divide isolator 46, second total isolator 51, second divide isolator 53, single phase switch 611, three phase switch 621 respectively, make bulb illumination, fan rotate or make three phase motor rotate, in order to realize the demonstration.
The utility model has simple structure, the front panel surface of the display board is provided with components such as a total distribution box, a distribution box and a switch box which are required by TN-S power utilization specification, components in each component are connected according to the requirement of the TN-S circuit, single-phase electric equipment and three-phase electric equipment are arranged behind the switch box, the characteristics of the TN-S circuit and the power utilization specification can be cleaned and demonstrated through the wiring mode and the work of the electric equipment, so as to improve the training efficiency of constructors; in addition, the distribution electric box, the switch box and the simulation equipment are arranged together, and the distance marked lines are arranged between the simulation equipment and the switch box, so that the requirements of TN-S power utilization specifications are met, and constructors can know the relative position relation among the total distribution box, the distribution electric box, the switch box and the equipment in the TN-S circuit specifications.
The utility model is not limited to the examples, and any equivalent changes to the technical solution of the utility model by a person skilled in the art after reading the description of the utility model are covered by the claims of the utility model.
Claims (9)
1. A TN-S electricity specification photoelectric demonstration device is characterized by comprising a display board (1) and a power supply battery (2) arranged in the display board; the rear panel surface of the display panel (1) is provided with a transformer (3) electrically connected with the power supply battery (2), and the front panel surface is provided with a main distribution box (4), a distribution box (5), a switch box (6) and a simulation device (7) which are sequentially connected with the transformer (3); the bottoms of the main distribution box (4) and the distribution box (5) are respectively provided with a PE terminal and a zero wiring end, the bottom of the switch box (6) is provided with a PE terminal, and the inner walls of the main distribution box (4), the distribution box (5) and the switch box (6) are respectively provided with a braided annealed copper wire connected with the PE terminal;
a voltmeter (41), an ammeter (42), an electroplating meter (43), a first main isolating switch (44), a first leakage protector (45) and a first sub isolating switch (46) which are electrically connected with the transformer (3) in sequence are arranged in the main distribution box (4); a second main isolating switch (51), a second leakage protector (52) and a second sub isolating switch (53) which are sequentially connected with the first sub isolating switch (46) are arranged in the distribution electric box (5); the switch box (6) comprises a single-phase switch box (61) and a three-phase switch box (62), the single-phase switch (611) and the third leakage protector (612) which are sequentially connected with the second isolating switch (53) are arranged in the single-phase switch box (61), and the three-phase switch (621) and the fourth leakage protector (622) which are sequentially and electrically connected with the second isolating switch (53) are arranged in the three-phase switch box (62); the simulation device (7) comprises a single-phase electric device (71) connected with the third leakage protector (612) and a three-phase electric device (72) connected with the fourth leakage protector (622).
2. A TN-S electricity specification photoelectric demonstration device according to claim 1, characterized in that, the voltmeter (41), the ammeter (42), the plating meter (43) are connected between the transformer (3) and the first total isolating switch (44); the three phase lines connected out of the transformer (3) are connected to a first general isolating switch (44), and the PE lines are connected to the PE terminals of a general distribution box; the N line connected out of the transformer (3) and the three-phase line connected out of the first main isolating switch (44) are connected to a first leakage protector (45); the N lines connected out of the first leakage protector (45) are connected to a zero wiring terminal of a main distribution box, and the three phase lines connected out of the N lines are connected to the first isolating switch (46).
3. A TN-S power specification electro-optical demonstration device according to claim 2 wherein the first sub-isolator (46) taps three phase lines connected to the second main isolator (51), the PE terminals of the main distribution box being connected to the PE terminals of the distribution box; the three-phase line connection connected out of the second main isolating switch (51) and the N line connected out of the main distribution box are both connected to a second leakage protector (52); and the N line connected out of the second leakage protector (52) is connected to a zero terminal of the distribution box (5), and the three-phase line connected out is connected to the second isolating switch (53).
4. A TN-S electricity specification photoelectric demonstration device according to claim 3, characterized in that the PE terminals of the distribution electric box (5) are connected to the PE terminals of the single-phase switch box (61) and the three-phase switch box (62), respectively.
5. A TN-S electricity specification photoelectric demonstration apparatus according to claim 4, characterized in that, when the distribution electric box (5) is connected to the single-phase switch box (61), one of the three-phase lines connected from the second isolating switch (53) and the N line connected from the distribution electric box (5) are connected to the single-phase switch (611) and the third earth leakage protector (612) in turn.
6. A TN-S electricity specification photoelectric demonstration device according to claim 4, characterized in that, when the distribution electric box (5) is connected to a three-phase switch box (62); and the three phase lines connected out by the second isolating switch (53) are sequentially connected to the three-phase switch (621) and the fourth leakage protector (622).
7. A TN-S electricity specification photoelectric demonstration apparatus according to claim 5, characterized in that the single-phase electric equipment (71) is a bulb or a fan.
8. A TN-S electricity specification photoelectric demonstration apparatus according to claim 6, characterized in that the three-phase electricity utilization equipment (72) is a three-phase motor.
9. A TN-S electricity specification photoelectric demonstration apparatus according to claim 7 or 8, characterized in that the main distribution box (4) is disposed on one side of the display board (1), and the distribution box (5), the switch box (6) and the simulation equipment (7) are disposed on the other side of the display board (1); the switch box (6) is close to the simulation equipment (7), and a distance marking line is arranged between the switch box and the simulation equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122332143.0U CN216053516U (en) | 2021-09-26 | 2021-09-26 | TN-S electricity standard photoelectric demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122332143.0U CN216053516U (en) | 2021-09-26 | 2021-09-26 | TN-S electricity standard photoelectric demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216053516U true CN216053516U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122332143.0U Active CN216053516U (en) | 2021-09-26 | 2021-09-26 | TN-S electricity standard photoelectric demonstration device |
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| Country | Link |
|---|---|
| CN (1) | CN216053516U (en) |
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2021
- 2021-09-26 CN CN202122332143.0U patent/CN216053516U/en active Active
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