Laboratory Stand “Electrical Engineering and Basics of Electronics with Microprocessor Control”

Product Overview

The Laboratory Stand “Electrical Engineering and Fundamentals of Electronics with MPSO” is designed to teach fundamental concepts in electrical engineering and electronics, including microprocessor control. It provides students with hands-on experience in designing, assembling, and troubleshooting electronic circuits with microcontrollers.

This comprehensive stand includes a modular structure, allowing for flexible creation of different experimental combinations, as well as a wide range of power supply units, measuring instruments, and load blocks for in-depth study of electric machines and circuits.

Technical Parameters

• Voltage: 380V
• Сan be equipped with transport rollers

Base Stand Components

• Input Block: 1 pc.
  • Supplies voltage to the base stand. Includes protective shutdown, zero protection, and short-circuit protection.
• Power Supply Unit 1: 1 pc.
  • Power Parameters: 100W; Input Voltage: 380V, 50Hz.
  • Outputs:
    • Uout1: +5V, 1A stabilized
    • Uout2: +15V, 1A stabilized
    • Uout3: -15V, 1A stabilized
    • Uout4: +24V, 1A stabilized
    • Uout5: +250V, 1A unstabilized
  • Built-in protection against short-circuit currents.
• Power Supply Unit 2: 1 pc.
  • Three-phase power supply: 380/127/24V, 190W.
• Power Supply Unit 3: 1 pc.
  • Regulated power source with the following technical characteristics:
    • Uout1: ~0-250V, 2A
    • Uout2: +0-250V, 2A
    • Uout3: ~0-36V, 2A
    • Uout4: +0-36V, 2A
• Measuring Unit: 1 pc.
  • Based on a measuring complex with 28 measuring channels and 4 galvanic junctions.
• Load Block 1: 1 pc.
  • Includes three-phase adjustable active, capacitive, and inductive loads.
• Block of Replaceable Panels: 1 pc.
  • Intended for installing changeable panels and connecting them to power sources, measuring devices, loads, and control devices.

Two-Engine Electric Machine Unit:

• Three-phase asynchronous motor with a short-circuited rotor.
• Three-phase two-speed motor with independent excitation.
• Optical speed sensor.

Additional equipment parameters:

• Main power source control and AC contactor – 1 unit;
• Position limit switches;
• Overload thermal relays – 2 units, time relay – 1 unit, resistors – 3 units;
• Electrical distribution system:
• Watt-hour meter – 1 unit;
  • Single-phase and two-phase circuit breakers;
• Lighting panel:
  • Power outlet – 2 units;
  • Double switch – 2 units;
  • Single switch – 1 unit;
  • Sound and light switch – 1 unit;
  • Incandescent lamp – 2 units;
• AC voltmeters and ammeters:
  • Digital voltmeter AC 0…450V – 3 units;
  • Digital ammeter AC 0…3A – 3 units.

Functional Features

1. Modular Design:
   • The frame uses standard aluminum profiles, ensuring durability and flexibility.
   • Modular construction allows for easy creation of different experimental combinations on a two-layer structure.
2. Removable Components:
   • All upper parts, including the experimental module, power module, and frame support, are removable for convenient reconfiguration and maintenance.
3. Microprocessor Control (MPSO):
   • Supports experiments involving microprocessor-based control systems.
4. Electrical Control Schemes:
   • Short pulse control scheme.
   • Self-locking scheme.
   • Short pulse and self-locking control scheme.
   • Control circuit for a three-phase asynchronous motor with reverse and contactor blocking.
   • Control circuit for a three-phase asynchronous motor with reverse and contactor/button locking.
   • Remote/local/multiple start and stop diagram.
   • Automatic reverse circuit.
   • Scheme of sequential starting of a three-phase asynchronous motor using an AC contactor.
   • Scheme of sequential starting of a three-phase asynchronous motor using a time relay.
   • Sequential start and stop diagram of a three-phase asynchronous motor with reverse.
   • Starting diagram of a three-phase asynchronous motor Y-Δ.
   • Scheme of step-down starting of a three-phase induction motor using a series resistor.
   • Control circuit for a three-phase two-speed motor.
   • Dynamic braking scheme of a three-phase asynchronous motor.
5. Lighting Control Schemes:
   • Wattmeter installation.
   • Circuit breaker installation.
   • One switch controls one incandescent lamp.
   • Two switches control two incandescent lamps.
   • Two double-pole switches control one incandescent lamp.
   • Sound and light control scheme.
   • Installation of sockets with circuit breaker protection.

Training Projects

1. Voltage Source in Electric Circuits: Study the behavior of voltage sources in various circuit configurations.
2. Operating Modes of Electric Circuits: Analyze the operating modes of electric circuits under different conditions.
3. Microprocessor-Controlled Circuits: Gain experience in designing and troubleshooting circuits with microprocessor control.
4. Three-Phase Motor Control: Experiment with control circuits for three-phase asynchronous motors, including reverse, sequential starting, and dynamic braking schemes.
5. Lighting Control Systems: Study lighting control schemes, including wattmeter installation, circuit breaker installation, and sound/light control.

Educational Benefits

• Hands-On Experience: Students gain practical experience by interacting directly with real-world components and assembling various electrical and electronic circuits.
• Comprehensive Coverage: The stand covers all essential aspects of electrical engineering and electronics, including microprocessor control, motor control, and lighting systems.
• Modular Design: Allows for flexible experimentation with different circuit configurations, enhancing understanding of complex systems.
• Measurement Capabilities: Equipped with a measuring unit featuring 28 channels and 4 galvanic junctions for accurate data collection during experiments.
• Safety-Oriented Design: Includes built-in protections against short circuits and overloads, ensuring safe operation during experiments.