Openlab

The system is a complete kit of components suitable for assembling the rotating electric machines, both for direct current and for alternating current. It allows the students to carry on a critical and well analyzed assembly, in order to understand the production techniques before performing practical tests of the operating characteristics.

The system is supplied at low voltages in order to prevent the risk of accidents. However, the machines have fully industrial features.

Applications

  • Assembly, operation and tests on electrical machines:
  • Study of the magnetic field
  • Principles of the electromagnetic induction
  • Separately shunt, series and compound excited dc motors
  • Separately shunt, series and compound excited dc generators
  • Induction motors: three-phase slip ring and squirrel cage, single-phase repulsion and with capacitor
  • Dahlander connection
  • Three-phase synchronous motor
  • Induction regulator and phase transformer
  • Alternator
  • Universal motor

Technical features:

The ac machine has a stator with 24 slots and 6 windings in order to change the pole number, 2 or 4; slip ring rotor with 21 slots (double layer winding) and squirrel cage rotor.

The dc machine has a stator with 2 field poles (series, shunt and compound excitator windings) and 2 interpoles; rotor with 20 slots (lap winding) and 40 segments.

DL 10280 Components

1. Baseplate
2  Four removable bearing housings
3. Coupling
4. Elastic buffer
5. Optical speed transducer
6. Clamping screws
7. Keys
8. Dc stator, with salient poles
9. Ac stator, with three-phase winding
10. Commutator rotor
11. Brush holder with two brushes
12. Squirrel cage rotor
13. Slip ring rotor
14. Brush holder with 3 pairs of brushes

DL 10281 Power supply unit

Outputs in alternating current
Three-phase: 24 V / 14 A
42 V / 10 A
Single-phase: 0 - 48 V / 5 A
0 -10 V / 12 A
Outputs in dc:
32 V / 14 A
42 V / 10 A
0 - 40 V / 5 A
0 - 8 V / 12 A
Three-phase power supply:
3 x 380 V + N
50/60 Hz

Complete with overspeed protection.

DL 10282 Electical and speed measurement unit

2 analog volmeters, three ranges: 3 - 15 - 75 V cc/ca
2 analog ammeters, three ranges: 1.5 - 5 - 15 A cc/ca
1 speed meter: 0 - 4000 g/1'

Power supply: 220 V, 50/60 Hz

Complete with speed meter and output for overspeed protection.

DL 10283 Loads and rheostat unit

  • Resistors:
    3 x 15 Ohm, 90 W each
    1 Ohm + (0 - 2 Ohm), 80 W
  • Capacitors: 3 x 80 µF, 150 V
  • Rheostat: 0 - 80 Ohm, 1 A

 

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