Microcomputer line protection experimental device

 

This device adopts a microcomputer line protection device widely used in modern power engineering, equipped with modules such as power supply, two sections of transmission lines, intestines, and intelligent fault settings. This device m--nly completes the tr--ning of the characteristics of the protection of the characteristics of the protection device, the wiring, the settings, and the operation. It can be used for tr--ning in the power industry, and it can also be used for the assessment of the tr--ning of students related to high school and technical technical schools.

 

Smart fault settings and large screen LCD questions:

 

Operating unit

 

Operating unit circuit board (integrated with display), keyboard.

 

The operating unit adopts multiple protection design; dual -power DC 12V input; 128x64LCD display; 8th road switch to alarm input, up to 48 -way relay control; the operating unit may not be connected to the offline assessment; the score can be automatically scored;

 

There are m--nly the following operating functions:

 

Student entrance: Students can be used when the students are lifted, and they can inquire about the rem--ning time of the assessment.

 

Teacher entrance: Set up faults, to remove all f--lures, set the assessment time, modify the login password, and set the device number. Teachers need to log in to the password.

 

Score query: query the current scoring of students.

 

Learning number query: Query the teacher set by the teacher through the computer.

 

Equipment number query: Query the device address of the machine, each operating unit has the unique device address.

 

The assessment time starts: After the teacher setting the assessment time, the assessment starts to count the countdown.

 

2. Tr--ning assessment project

 

1. Basic tr--ning program

 

(1) Simulation system is normal, maximum, and minimum operation

 

(2) Simulation system short circuit

 

(3) Basic functional test of microcomputer protection device

 

(4) Microcarmarking current speed break protection

 

(5) Microcarmark time limit over current protection

 

(6) The speed of the time limit of the microcomputer band

 

(7) Phase current protection

In recent years, with the widespread application of CNC technology, the school has p--d more and more attention to practical and skillful talents that cultivate jobs in production and technical services. Control principles, CNC programming, electrical design methods, installation, commissioning and m--ntenance. However, most colleges and universities face lack of such CNC tr--ning equipment. To this end, the company has developed the principles of the electronic control system of the CNC processing center and the internship device of the commissioning and m--ntenance experimental desk. The use of this device can enable students to master the system control principles, electrical design methods, selection of components, electrical installation and debugging of components, processing and commissioning, fault diagnosis and m--ntenance, part programming and graphics simulation processing process, etc., to achieve industry Production site internship effect. This device adopts an open structure and modular design, which can be used for teaching and curriculum design, graduation design and tr--ning. Adapt to and meet market demand limit. This device can also help scientific research and technical personnel to further understand the structure of CNC processing center, and also provides necessary conditions for technical personnel to carry out secondary development of the CNC milling machine system. The m--n devices of this experimental device are used for industrial control products.

I. The tr--ning table is equipped with: 1 set of servo spindles, 1 cooling pump, 3 servo motors, limit, etc.

2. Technical parameters of the experimental table:

1. Enter power supply: AC380V (three -phase and five -line system), 50Hz

2. F--lure assessment: 16 items (smart type)

3. Working environment: temperature -100C ~ 400 C

4. The capacity of the whole machine: ≤8kva;

5. Tr--ning electrical cabinet size: length × width × height = 1000 mm × 650 mm × 1800 mm;

Machine tool shape size: length × width × height = 2000 × 1720 × 2500mm

Electric installation board size: length × width = 1000 × 900mm;

6. Intelligent assessment system function of CNC milling machine:

1) Use the latest MCU technology RAM to process the digital integrated circuit board and supporting wireless fault setting control system of the chip. The system is stable and not infected with viruses.

2) The control module (PC control terminal or handheld mobile control terminal) and the driving module (smart fault setting drive box) are separated to avoid complex connection interference controllers, and the system is more reliable.

3) Driving module built -in intelligent fault setting control system, equipped with a special new wireless data transmission module (insertable type) and RS232 serial communication interface, can be wireless network communication and RS232 wired communication.