NTC-08.15 “Installation and maintenance of electric power networks for industrial enterprises and households”

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The laboratory stand is designed to be used as a teaching facility to carry out laboratory works to study electric devices used in enterprises and households, basics of their installation and search for faults.

 
Category:
Structurally, the training system consists of a housing in which electrical equipment, electronic boards, a double-sided front panel, and a tabletop.

Has two h/w versions: full size bench top version and table version.

On the front panel there are:

  • circuit breaker “Power”,
  • transformer T2,
  • circuit breaker QF1,
  • differential automaton QF3,
  • magnetic starters KM1, KM2,
  • relay K1-K3,
  • fuse FU1,
  • load resistors R1, R2,
  • ammeters PA1, PA2,
  • voltmeters PV1, PV2,
  • two-element wattmeter PW1, PW2,
  • speed meter n,
  • LATr T1,
  • time relay KT1, KT2,
  • thermal relay KK1,
  • bulb EL1,
  • luminescent lamp EL2,
  • capacitors C1-C3,
  • switches SA1, SA3-SA5,
  • button posts SB1, SB2,
  • ring HA1.

The rear panel shows a fragment of the flat’s electrical installation.

A machine unit consisting of a squirrel cage induction motor and a DC motor is mounted on the tabletop. The speed of the electric motors is measured by means of a DC tachogenerator. The shafts of all the electrical machines are mechanically connected together by means of couplings.

Control of three-phase voltage supply to the training system is carried out by indication lamps.

To assemble the investigated circuits, the connection wires (jumpers) should be used to connect the respective elements according to the schematic and assembly diagrams given in the methodical guidelines.

The training system is supplied with a set of teaching materials and technical documentation intended for the teaching staff.

Experiments provided

  1. The test of ground loop.
  2. The test of electric motor with switching units.
  3. Condenser test to increase power coefficient.
  4. The study of lighting network protection.
  5. Mounting of electric light network in an apartment.
  6. The study of luminescent lamp operation.
  7. Detection and elimination of automatic electric drive defects.
  8. Test of ac motor after service.
  9. Test of dc motor after service.
  10. Test of motor-starting devices after service.
  11. Test of power transformers after service.
  12. Location of faults in cable lines.

Technical specifications

Power supply 3~380/220V, 50Hz
Power consumption, Watt, max 500
Stand overall dimensions, max:
  Width, mm 1310
  Height, mm 1470
  Depth, mm 600
Weight, kg, max 60
Desktop version overall dimensions, max:
  Width, mm 1310
  Height, mm 680
  Depth, mm 600
Weight, kg, max 45

Scope of delivery

  • laboratory stand – 1 pc.;
  • passport – 1 pc.;
  • supplementary materials in electronic format – 1 pc.;
  • set of jumpers – 1 set;
  • multimeter – 1 pc.;
  • the sensor of a breakaway search – 1 pc.;
  • bulb 60W – 220V – 3 pcs.
  • installation wire – 50 m.

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