Laboratory Stand “Electric Motor Study”

1. Product overview

1.1 Overview This training device includes a variety of types of induction motors and industrial control components. Through the relevant experiments, students can familiarize themselves with the operation characteristics of AC and DC motors, master their control principles and control modes, and gain the corresponding knowledge and technical skills. It is widely applied in higher vocational colleges, secondary vocational schools, and vocational school-related professional teaching and technical skills training programs and examinations.

1.2 Features

1. The actual training platform adopts an aluminum profile frame structure with universal wheels at the bottom, allowing it to move flexibly. The measuring instruments and actual training power sources are integrated and installed, making it easy to use and not easily damaged.
2. The motor is fully equipped and can be used in combination to complete a variety of training contents.
3. The training platform has a good security system.

2. Performance parameters

1. Input power: three-phase five-wire system 380V ± 10% 60Hz
2. External dimension: 1600mm x 800mm x 1800mm
3. Complete machine capacity: < 1.5 KVA
4. Weight: < 520kg
5. Working conditions: temperature -10℃ ~ +40℃, relative humidity < 85% (25℃)

3. Product composition

3.1 Power control screen The power control panel adopts an aluminum alloy profile panel, closed box body structure, and the lower shelf is connected to one.

3.2 Training bench The actual training table is supported by aluminum profile columns, with flexible bottom wheels that can be moved and positioned flexibly. The tabletop uses a high-density base plate of 25mm thickness, with a high-temperature and high-pressure fire prevention board surface treatment. It includes three guide-type drawers and two sliding door-type bottom cabinets, making the structure firm, beautiful, and generous.

3.3 Power control screen configuration

1. The input of the three-phase five-wire power supply is controlled by a leakage circuit breaker. It has an emergency stop control button, and in case of an emergency, pressing the emergency stop button will cut off the power supply.
2. Equipped with power indicators, power output sockets, and secure type power supply terminals.
3. Configuration AC motor special protection switch, built-in AC power supply, short circuit protection function.
4. Built-in AC power and short circuit protection.

Power supply box, AC 1ph & 3ph and DC outputs:

• 01 output variable DC 0 to 230V / 10A min, with security socket and protected by circuit breaker
• 01 output variable DC 0 to 230V / 1A for rotor excitation, protected by circuit breaker
• 01 output variable AC 3ph, with protected sockets, 0 to 430V + N / 5A protected by circuit breaker
• 01 output constant AC 3ph, with protected sockets, 400V + N / 10A protected by circuit breaker
• 04 outputs at least on single phase sockets 230V + Ground, 16A protected by circuit breaker

The box must be protected by a differential circuit breaker with high sensitivity, emergency push button, and key switch. It should also be protected against DC motor run-away by general cut-off. A synoptic in front illustrates the cabling drawing and light indicators which indicate voltage presence.

4. Equipped components

1. Field rheostat for DC machines
2. Starting rheostat for DC motors
3. Rheostat for rotoric start for slip rings motor
4. Resistive load 3ph variable by rows (by switches), having the same power as the required machines (DC and AC generator)
5. Capacitive load 3ph variable by rows (by switches or hand wheel), having the same power as the required machines (DC and AC generator)
6. Inductive load 3ph variable by rows (by switches), having the same power as the required machines (DC and AC generator)
7. DC machine with shunt excitation, minimal power 0.75 kW, 220V, 1500 rpm can operate as motor and generator
8. DC machine with serial excitation, minimal power 0.75 kW, 220V, 1500 rpm can operate as motor and generator
9. DC machine with combined excitation, minimal power 0.75 kW, 220V, 1500 rpm can operate as motor and generator
10. Asynchronous motor, cage rotor 3ph, 220/380V 50Hz, 1500rpm, 0.75kW min
11. DAHLANDER double speed asynchronous motor cage rotor, 380V 50Hz, 0.75kW min, 1500 and 3000 rpm
12. Synchronous reversible motor, 220/380V 50Hz, 1500rpm 0.75kW
13. Single phase asynchronous motor, with auxiliary pole, with starting condenser, cage rotor, 230V/50Hz, 1500rpm, 0.75kW
14. Universal single phase motor, powered by DC and AC 230V 50Hz, 1500 rpm, 0.75kW
15. Set of connection wires with different lengths
    • Machines must have the same shaft height, with didactic connection boxes having synoptic with connection schema.
16. Brake to simulate mechanic loads, adequate speed and power for the motors, the brake allows to calculate the couple by one method.
17. Board for parallel mounting of a 3ph alternator with the industrial network. The board is equipped with safety sockets and an inverter to verify frequency and voltage equality (alternator side and network side). Equipped with light indicator, to verify phases correspondence and a switch to latch in case of all confirmed conditions.
18. Digital measuring module of electrical parameters, DC and AC current and voltage, single and 3ph power. The module must be protected against overload and allow resetting values to zero.
19. Digital tachymeter up to 10000 rpm provided with connection cables, allows measuring speed by contact or without contact using sensor.
20. Set of couplings with protection accessories.
21. Frames for easy mounting of the machines. Each frame allows installing two machines, and should be equipped with vibration-proof rubber supports.