DYDGG series maintenance electricity experiment platform

The device is designed and manufactured according to standard electrical control cabinet specifications and adopts a panel structure. It highlights skill tr*ning and pays attention to pertinence, practicality and scientificity. It has been proven by the use of many vocational skills tr*ning centers, vocational schools and technical schools across the country that the cabinet is reasonably designed, easy to operate and covers a small area. In order to extend the service life of electrical appliances, the contacts of each electrical appliance are connected to terminal blocks, and students are then allowed to wire the terminal blocks and connect motors and electrical appliances to complete various control experiments, effectively reducing material consumption and extending service life. This set of equipment is suitable for various labor vocational skills appr*sal departments, and is also suitable for the teaching and practical tr*ning assessment of junior and intermediate electricians and electric tractors in major universities, technical secondary schools, technical schools, and vocational schools.

2. Product features:

1. Assessment function: The equipment is equipped with a timer and a misoperation alarm recorder. It is usually used as a clock. The time can be set during assessment. Students are required to complete the experimental project within the specified time. It has the ability to set the experimental time to set the alarm and remind in advance. function to cut off the power supply. At the same time, it can also automatically record the total number of leakage, overcurrent, short-circuit alarms and power on/off caused by wiring or operation errors. Provide a unified standard for the assessment of students' experimental skills.

2. Safety performance: The device is equipped with current-type and voltage-type leakage protection devices to ensure personal safety and is suitable for the special requirements of student operation. At the same time, it is also equipped with overcurrent or short-circuit protection device to ensure the safety of the equipment. The equipment is input by a three-phase five-wire power supply. The power supply is controlled by a contactor through a start and stop button. It is equipped with a three-phase voltmeter for indication. It is equipped with a current-type leakage protector. If there is leakage on the control panel and the leakage current value exceeds a cert*n value, the power supply will be cut off. It is also equipped with a voltage-type leakage protector. If there is leakage on the total power output and wiring during the experiment, , that is, alarming and tripping the contactor in the device, cutting off the power supply to ensure personal safety. It is also equipped with an over-current protection device. If the output is short-circuited or the load is too large, and the current exceeds the set value, the system will alarm and cut off the m*n power supply to ensure the safety of the equipment.

3. Reasonable structure: The equipment uses a standard power distribution cabinet as the m*n cabinet, and uses the double-sided space of the cabinet to scientifically arrange electrical appliances and supporting experimental equipment. The cabinet is reasonably designed and easy to operate. One cabinet has multiple uses. All electrical component contacts have been connected to the terminal blocks. Students only need to perform wiring experiments on the terminal blocks, which extends the service life of the electrical components and reduces material loss.

4. Beautiful appearance: The device layout is reasonable, the appearance is beautiful, and the panel diagram is clear and intuitive. The wiring is clear and tidy, reducing the number of f*lures and improving reliability. The device adopts an iron double-layer matte dense pattern spray-plastic structure; the structure is firm and beautiful. Beautiful and elegant product appearance, advanced structure and technology. Make people feel pleasing to the eye.

3. Technical parameters:

1. Input power: three-phase four-wire 380V±10% 50Hz

2. Working environment: Temperature: -10℃～+40℃ Relative humidity: ≤85% (25℃)  

3. Device capacity: ≤1.5KVA

4. Overall dimensions: 700×600×1700mm

4. Product composition:

1. Tr*ning cabinet

The tr*ning cabinet is made of iron matte dense spray-coated structure: it is extruded from cold-rolled steel plates. The tr*ning cabinet cont*ns four universal moving wheels with foot brakes.

2. Cabinet door

(1) Equipped with an AC voltmeter, an AC ammeter, and a voltage indication switch; the power supply emergency stop button and start-stop switch of the control cabinet are controlled. The voltage indication switch can indicate the UUV, UVW, and UWU line voltages of the power grid respectively. value; equipped with an AC ammeter to monitor the load size.

(2) Safety protection system.

1) The three-phase power supply of the power grid passes through the leakage protector, AC contactor, and then is output to each tr*ning power through the circuit breaker.

2) It is equipped with a leakage protection device with an operating current of 30mA, which can automatically cut off the m*n power supply in case of leakage during tr*ning.

3) It is equipped with an over-current protection device. If the output is short-circuited or the load is too large and the current exceeds the set value, the system will cut off the m*n power supply.

4) Power f*lure protection.

5) The device adopts grounding protection.

3. Internal configuration module:

Wiring troughs are used to divide the internal space into different areas, and the layout is reasonable. All electrical component terminals have been led to the dedicated terminal strip, and students can connect/wiring from the terminal strip to get close to the industrial site.

(1) AC power supply

Equipped with a set of control transformers, the primary side has 380V AC power input, and the secondary side of the transformer can output AC voltages of 110V, 36V, 24V, 12V, and 6.3V.

(2) Instruments

Provide an AC voltmeter with a measurement range of 0 to 500V and an accuracy of 2.5 levels.

Provide AC ammeter with measuring range of 0~5A and accuracy of level 2.5.

4. Practical tr*ning content

1. Single-phase start and stop control circuit 

2. Asynchronous motor inching control circuit

3. Asynchronous motor two-place control circuit

4. Asynchronous motor interlocking forward and reverse control circuit

5. Double ch*n forward and reverse control circuit

6. Automatic sequence starting control

7. Manual sequence start control

8. Asynchronous motor star and delta control circuit

9. Asynchronous motor energy consumption control circuit

10. Asynchronous motor reverse braking control circuit

11. Automatic round trip control circuit

12. Forward and reverse inching and starting control circuit

13. Automatic reciprocating control circuit with jog

14. Contactor control star-delta console circuit

15. Asynchronous motor self-locking control circuit

16. Asynchronous motor one-way jogging and starting control circuit

17. Position switch for automatic stop, forward and reverse start control circuit

18. Series resistor step-down starting console circuit

22. Wiring circuit for current transformer and ammeter

23. A current transformer is used in the wiring circuit of a single-phase circuit

24. Two current transformers are connected to form an unsafe star connection circuit.

25. Three current transformers are connected to form a star wiring circuit.

26. Differential connection circuit of two current transformers

27. Three current transformers are connected to form a delta wiring circuit.

28. Universal transfer switch and voltmeter to measure three-phase voltage wiring circuit

29. Incandescent lamp control circuit

30. Fluorescent lamp control circuit

31. Touch switch controls incandescent lamp circuit

32. Voice-activated switch controls st*r incandescent lamp circuit

33. Single-phase motor control circuit

34. Shunt DC motor armature control system

35. One-way electricity meter is directly installed on the circuit

36. One-way electricity meter indirect installation circuit

37. Three-phase four-wire watt-hour meter circuit control system

38. Voltmeter and ammeter installation circuit

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