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Electromechanical test bench

 

Electromechanical test bench

Description

A station for the production of braking couple and torque of electric machines and other rotating machines, adapted to high-precision measurement of torque and rotation speed.

The unit for testing horizontal shaft machines with a power of 200 kW and rotation speed up to 6000 revolutions/min., and vertical shaft machines with a power of a 80 kW and rotation speed of up to 1500 revolutions/ min.

The test bench is adjusted to testing horizontal shaft machines with a maximum shaft height of 355 mm, and maximum weight of 2400 kg – both flange mounted motors and foot mounted motors (possibility to place the motors on a workbench with a size of 1200 x 1200 mm).

Illustration of the publication
Illustration of the publication

Intended useIntended use

  • Tests and assays of electric engines / drives, generators, pumps, hydraulic motors, brakes, mechanical transmissions and other rotating machines
  • Determination of the moment of inertia of rotatingmachines
  • Acquisition of measurement data for mechanicaland electrical values of the tested rotating machines
  • Diagnostics of electrical machines
  • Electric machine efficiency tests in line withPN-EN 60034-2-1:2015-01 standard
  • Tests for compliance with the Machinery Directive No 2006/42/EC

The power supply of the tested machines

Alternating current machines (AC)

  • Closed-circuit voltage up to 500 V
  • Closed-circuit current up to 400 A

Frequency 10-62 HzDirect current machines (DC)

  • Closed-circuit voltage up to 440 V
  • Closed-circuit current up to 300 A

Controlled electrical load

  • Active power up to 200 kW
  • Reactive power (inductive and capacitive) up to 200 kVar
  • Possibility of short-term overload up to 140% of the power rating of the test bench

Accompanying services

  • Testing the control systems of power units (converters/ electric machines)
  • Measurements of noise and vibration levels of rotating machines at variousload stages
  • Measurement of the insulation condition of electric machines
  • Determining heating curves of electric machines
  • Design of electric machines (motors, generators)and power units
  • Design of electronic power converters and controls
Illustration of the publication

Measurement ranges

  • Rotation speed up to 6000 revolutions /min., with an accuracy ±0.1 revolutions/ min.
  • Motor torque up to 200 Nm, with an accuracy of ±0,1 Nm
  • AC/DC voltage up to 1 kV
  • AC/DC current up to 3 kA

Additional possibilities

Tests of integration of motors and generators with electric power systems (operation in a synchronous grid, operation in autonomous/ stand-alone systems)

Shaping the assigned drive characteristic of the test bench – emulation of various types of mechanical drive loads (pumps, ventilators, lifts, vehicles and others)

Possibility to test low-speed machines by applying a reduction gear

Keywords

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