Laboratory Stand "Electronic Engineering Laboratory"

Technical parameter:

1. Size: not less than 1700×750×1750 mm

2. Study desk material: aluminum structure

3. Power supply:

Input: three-phase five-wire AC 380V ±10% 50Hz

AC outlet:

- Stationary: three-phase five-wire 380 V; 1 group plug-in type, 1 group plug-in type 220 V, 3 groups socket type 220 V

- Adjustable: 0-220V stepless adjustment (with power off, overcurrent protection, intelligent error recording function)

DC output:

- Stationary: excitation power supply 110V/0.5A, 1 group, +12V/1.5A, 1 group; -12V/1.5A, 1 group; +5V/1.5A, 1 group (with power cut-off, overcurrent protection, intelligent fault recording function)

- Adjustable: armature power 0-220V/1.5A, 1 group (output controlled by voltmeter), adjustable 0-24V, 2A, 1 group (output controlled by voltmeter/ammeter)

4. Interface and tool: It can be equipped with an answering machine and perform smart assessment through the teacher's computer and smart assessment hanging board

5. Experiment manager with clock, sound timer, on/off function

6. Malfunction recording device with malfunction alarm, recording, and corresponding power cut-off function

7. Tool/connector

Internal measurement display: 1 indicator type AC voltmeter, 1 digital indicator type DC voltmeter, 1 indicator type DC voltmeter; 1 pc. indicator type constant ammeter, which monitors the changes in the measured voltage/current in real time

For measuring exercises: 1 digital display power factor meter, 1 AC/DC digital voltmeter, 1 digital AC/DC current

8. Rectifier bridge: 1 group

9. Educational transformer:

(input) 380V/220V

(output) 110V, 36V, 20V

(two groups), 12V, 6.3V

(with overcurrent protection signal shutdown, intelligent error recording function)

10. Protection: short circuit protection, overload protection, low voltage protection, current leakage protection, current leakage protection operation current ≤30 mA

Training content:

1. Training in connecting lighting circuits;

2. Training in connecting fluorescent lamps;

3. Motor and continuous rotation connection training;

4. Installation of a dual-control engine control circuit;

5. Forward and reverse motor connection with lock button;

6. Direct and reverse connection of the motor with contactor blocking;

7. Direct and reverse connection of the motor with double connection of the contactor and button;

8. Learning to connect a control circuit for sequential starting of the motor stator winding;

9. Y- △ with a button switch startup management scheme connection training ;

10. Teaches how to connect the Y- △ start control of the time relay switch scheme .

11. Learning to connect the braking control circuit of a half-wave motor rectifier;

12. Teaches how to connect the braking control circuit of a full-wave motor rectifier;

13. Engine brake control circuit connection;

14. Teaches how to connect a two-way motor control circuit;

15. Learning to connect the engine sequential start control circuit;

16. Engine synchronization control circuit connection training;

17. Two-speed motor control circuit connection with push-button switch;

18. Two-stage motor control circuit connection with a time relay;

19. Checking and eliminating common faults in the vehicle's electrical control circuit (16 fault points can be defined).