Laboratory Stand “Installation and Adjustment of Electrical Equipment for Industrial and Civil Buildings”

Front Panel Components

The front panel includes the following components:

• Automatic circuit breaker “Network”
• Transformer T2
• Circuit breaker QF1
• Differential machine QF3
• Magnetic starters KM1, KM2
• Relays K1–K3
• Fuse FU1
• Load resistors R1, R2
• Ammeters A1–A2
• Voltmeters V1–V2
• Two-element wattmeters W1, W2
• Speedometer n
• LATR T1 (Laboratory Autotransformer)
• Time relays KT1, KT2
• Thermal relay KA1
• Incandescent lamp HE1
• Fluorescent lamp
• Capacitors C1–C3
• Switches SA1, SA3–SA5
• Button posts SB1, SB2
• Call signal HA1

Back Panel Components

On the back panel, there is a fragment of the installation of electric lighting in an apartment.

Mechanical Connections

The shafts of all electric machines are mechanically connected to each other by means of couplings. Control of the supply of three-phase voltage to the stand is carried out by indicator lamps.

Functional Blocks

• In the right part of the stand, there is a functional block for studying the asynchronous motor and its drive.
• On the left side are the start-up devices used in this scheme.
• In the central part of the panel, there are devices for researching the DC motor and the transformer.

Assembly Instructions

To assemble the circuits under study, the corresponding elements should be connected with connecting wires (jumpers) according to the schematic diagrams provided in the methodical instructions.

Documentation

A set of methodical and technical documentation intended for the teaching staff is attached to the stand.

List of Performed Works

1. Testing of the grounding circuit.
2. Testing of an electric motor with switching devices.
3. Testing of capacitors to increase the power factor.
4. Study of lighting network protection.
5. Studying the rules for installing electric lighting in an apartment.
6. Study of the operation of fluorescent lamps.
7. Identification and troubleshooting of automated electric drives.
8. Testing the AC electric motor after repair.
9. Testing of the DC motor after repair.
10. Post-repair testing of start-up control equipment.
11. Testing power transformers after repair.
12. Study of methods for determining places of damage in cable lines.

Technical Characteristics

• Power Supply: 3~380/220 V, 50 Hz
• Power Consumption: Not more than 0.5 kW
• Overall Dimensions (Stand):
  • Width: 1310 mm
  • Height: 1470 mm
  • Depth: 600 mm
  • Weight: 60 kg
• Overall Dimensions (Desktop Version):
  • Width: 1310 mm
  • Height: 680 mm
  • Depth: 600 mm
  • Weight: 45 kg