DYPD-DY low-voltage power distribution system training platform

The tr*ning device m*nly consists of four parts: metering cabinet, incoming line cabinet, compensation cabinet and outgoing line cabinet. The cabinet is equipped with three-phase active energy meters, three-phase reactive energy meters, current transformers, aluminum wiring bars, isolation switches, universal low-voltage circuit breakers, compensation capacitors, power factor controllers, low-voltage circuit breakers, indicating instruments and other devices. It is suitable for practical tr*ning and assessment of senior m*ntenance electricians in vocational colleges, technical schools, etc.

1.2 Technical parameters:

Working power supply: three-phase five-wire 380V±5% 50Hz

Safety protection: leakage protection (action current ≤30Ma), overcurrent protection, fuse protection

Overall dimensions: 660×600×2300mm

Rated current: 100A

Working environment: temperature 0℃～50℃

Relative humidity 35～85% altitude＜4000m

1.4 Product structure:

All cabinets are made of high-quality steel plates, which are machined and formed. The outer surface is spray-coated with colorful epoxy polyplastic. The whole machine is strong and durable, and beautiful. The bottom of the cabinet uses universal wheels with brakes, which are suitable for both moving and fixing, making it easy to adjust the placement of the equipment.

1.5 Basic configuration and det*led description:

 Det*led description of basic configuration of low-voltage distribution cabinet products

1.6 Experimental content:

1. Cognitive tr*ning on power transformers

2. Cognitive tr*ning on voltage devices

3. Surveying and mapping tr*ning of low-voltage primary circuit diagram

4. Surveying and mapping tr*ning of low voltage secondary circuit diagram

5. Wiring tr*ning for metering cabinets

6. Wiring tr*ning for incoming line cabinets

7. Wiring tr*ning for capacitor compensation cabinet

8. Wiring tr*ning for outlet cabinets

1.7 Teaching software

1. Electrical safety and electric shock first *d simulation teaching software

The software uses a combination of two-dimensional and three-dimensional virtual images to teach students the safety and first *d methods of using electricity. The software includes single-phase electric shock, two-phase electric shock, step electric shock, low-voltage electric shock first *d, high-voltage electric shock first *d, artificial respiration first *d, Principles of hand-holding breathing rescue method, chest cardiac compression and other protective methods are expl*ned and taught. Principles of single-phase electric shock are divided into rep*ring live disconnection, rep*ring socket electric shock, and outdoor electric shock. The teaching of low-voltage electric shock and high-voltage electric shock m*nly expl*ns and demonstrates to students how to rescue people who are suffering from low-voltage electric shock or high-voltage electric shock. Artificial respiration rescue method, hand-holding breathing rescue method, and chest cardiac compression rescue method are demonstrated using 3D virtual simulation technology. After rendering and Polish it to make the model look like the real part and look realistic. Through practical tr*ning, students can be educated on the safe use of electricity in the tr*ning room, improve students' safety awareness, and enable students to learn some self-rescue methods, so that students can take cert*n safety measures to protect themselves when encountering danger, and become familiar with various Causes of electrical accidents and practical measures to deal with them to reduce the occurrence of electrical accidents.

2. M*ntenance of electricians, electronic motors and vocational qualification tr*ning assessment simulation software

This software is in apk format and can be used on PC or mobile. This software can set faults manually or automatically. This software can manually set fault points through the green box in the circuit diagram (you can set up to 39 fault points), you can also automatically set one random fault point, two random fault points, three random fault points, four random fault points, and five random fault points through the system. It has functions such as toolbox, component library, magnifying glass, circuit diagram, etc. You can choose a multimeter for testing through the toolbox, select appropriate components through the component library, and clearly understand each component and circuit through the magnifying glass. This software allows students to understand the working principle and circuit structure of the motor star-delta start control circuit through the setting of faults in the motor star-delta start control circuit and various investigations.

3. Virtual spectrum analyzer, logic analyzer, oscilloscope, and three-meter simulation software:

This software is in apk format and can be used on PC or mobile terminals. The functions of this software are: resistance measurement, AC voltage measurement (measuring transformer, if the multimeter burns out when measuring the transformer, black smoke will emit prompts and can reset the multimeter), determine the polarity of the transistor, measure the DC voltage (the light turns on when the ammeter is turned on), measure the DC current, and determine the quality of the capacitor. This software can drag the red and black pen tips at will. When the two pen tips are dragged and positioned on the object to be measured, a red circle will be displayed. If the positioning is not accurate, no red circle will be displayed, and when incorrect operations are performed (such as the wrong range selected, If the measured data is wrong, etc.), the meter pointer will be unresponsive, prompting errors and re-measurement, etc. This multimeter can select AC voltage range, DC voltage range, resistance range, current range, resistance adjustment to 0, and can enlarge the display data. Clearly view the measured data size. Students can learn the correct use of multimeters through this software.

4. Microcontroller and plc programmable design and control virtual simulation software:

This software is developed based on unity3d and has built-in experimental steps, experimental instructions, circuit diagrams, component lists, connection lines, power on, circuit diagrams, scene reset, return and other buttons. After the connections and codes are correct, you can start/stop, The forward movement and reverse movement buttons operate the 3D machine tool model to move. In the connected line state, the 3D machine tool model can be enlarged/reduced and translated.

1. Relay control: Read the experiment instructions and enter the experiment. By reading the circuit diagram, select the relays, thermal relays, switches and other components in the component list and drag and drop them into the electrical cabinet. The limiters are placed in the three-dimensional On the machine tool model, you can choose to cover it, and some component names can be renamed. Then click the Connect Line button to connect terminals to terminals. After successfully connecting the machine tool circuit, choose to turn on the power and proceed. If the component or line An error box will pop up if there is a connection error, and the scene can be reset at any time.

2. PLC control: The experiment is the same as relay control, with the addition of PLC control function. After the connection is completed, enter the program writing interface through the PLC coding button, and write two programs, forward and reverse, with a total of 12 ladder diagram symbols. The writing is completed. Finally, select Submit for program verification. After the verification is successful, turn on the power for operation. Error boxes will pop up for component, line connection, and code errors, and the scene can be reset at any time.

3. Single-chip microcomputer control: The experiment is the same as relay control, with the addition of single-chip microcomputer control function. After the connection is completed, enter the programming interface through the C coding button, enter the correct C language code, and after successful submission and verification, turn on the power for operation, components, lines If there are connection or code errors, an error box will pop up, and the scene can be reset at any time.

1.8 The low-voltage cabinet consists of four cabinets: metering cabinet, incoming line cabinet, compensation cabinet, and outgoing line cabinet.

1.8.1 Teaching low-voltage metering control tr*ning cabinet

1.8.1.1 Equipment overview:

It is m*nly composed of a three-phase active energy meter, a three-phase reactive energy meter, a wiring aluminum bar, etc., and is used to measure the active power and reactive power in the line.

1.8.1.2 Technical parameters:

Working power supply: three-phase five-wire 380V±5% 50Hz

Safety protection: leakage protection (action current ≤30Ma), overcurrent protection, fuse protection

Overall dimensions: 660×600×2300mm

Rated current: 250A

Working environment: temperature 0℃～50℃

Relative humidity 35～85% altitude＜4000m

1.8.1.3 Equipment structure

The entire cabinet is made of steel structure, which is formed by machining. The outer surface is sprayed with colorful epoxy polyplastic, which is strong and beautiful. The bottom of the cabinet adopts universal wheels with brakes, which are suitable for both moving and fixing, making it easy to adjust the placement of the equipment.

1.8.1.4 Equipment configuration: (configuration per device)

1.8.2 Teaching low-voltage line control tr*ning cabinet

1.8.2.1 Equipment overview:

It is m*nly composed of an isolation switch, a universal low-voltage circuit breaker, a control button, an indicator light, etc. It is m*nly used for the isolation of power supply in the line and the start and stop control of the load. The universal low-voltage circuit breaker has manual and electric energy storage functions.

1.8.2.2 Technical parameters:

1. Working power supply: three-phase five-wire 380V±5% 50Hz

2. Safety protection: leakage protection (action current ≤30Ma), overcurrent protection, fuse protection

3. Overall dimensions: 800×600×2300mm

4. Rated current: 250A

5. Working environment: temperature 0℃～50℃

6. Relative humidity 35~85% altitude <4000m

1.8.2.3 Equipment structure

The entire cabinet is made of steel structure, which is machined and formed. The outer surface is sprayed with colorful epoxy polyplastic, which is strong and beautiful. The bottom of the cabinet adopts universal wheels with brakes, which are suitable for both moving and fixing, making it easy to adjust the placement of the equipment.

1.8.2.4 Equipment configuration: (configuration for each machine)

1.8.3 Teaching capacitor compensation tr*ning cabinet

1.8.3.1 Equipment overview:

It is m*nly composed of automatic reactive power compensation device, compensation capacitor, AC contactor, thermal overload relay, voltmeter, power factor meter and other parts. It can automatically switch the number of compensation capacitors according to the nature of the driven load.

1.8.3.2 Technical parameters:

1. Working power supply: three-phase five-wire 380V±5% 50Hz

2. Safety protection: leakage protection (action current ≤30Ma), overcurrent protection, fuse protection

3. Overall dimensions: 800×600×2300mm

4. Rated current: 125A

5. Working environment: temperature 0℃～50℃

6. Relative humidity 35~85% altitude <4000m

1.8.3.3 Equipment structure

The entire cabinet is made of steel structure, which is machined and formed. The outer surface is sprayed with colorful epoxy polyplastic, which is strong and beautiful. The bottom of the cabinet adopts universal wheels with brakes, which are suitable for both moving and fixing, making it easy to adjust the placement of the equipment.

1.8.3.4 Equipment configuration: (configuration per machine)

1.8.4 Teaching outlet control tr*ning cabinet

1.8.4.1 Equipment overview:

It is m*nly composed of isolation switch, low voltage circuit breaker, aluminum bar and other parts. The leakage circuit breaker control output of corresponding specifications can be selected according to the size of the load.

1.8.4.2 Technical parameters:

1. Working power supply: three-phase five-wire 380V±5% 50Hz

2. Safety protection: leakage protection (action current ≤30Ma), overcurrent protection, fuse protection

3. Overall dimensions: 860×600×2300mm

4. Rated current: 250A

5. Working environment: temperature 0℃～50℃

6. Relative humidity 35~85% altitude <4000m

1.8.4.3 Equipment structure

The entire cabinet is made of steel structure, which is machined and formed. The outer surface is sprayed with colorful epoxy polyplastic, which is strong and beautiful. The bottom of the cabinet adopts universal wheels with brakes, which are suitable for both moving and fixing, making it easy to adjust the placement of the equipment.

1.8.4.4 Equipment configuration: (configuration per machine)

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