interaction of electromagnetic and mechanical elements of the system

Description:

• Asynchronous motors are in widespread use as drive mechanisms.
• These motors can generate machine vibrations. If there is an asymmetric gap, the circulating magnetic forces induce rotational and bending vibrations.
• The same applies to partial failure of the electrical windings.
• In this case, the asymmetrical magnetic field also induces mechanical vibrations.
• The PT 500.19accessory set features an adjustable centring device to adjust an asymmetrical gap.
• A winding that can be switched off generates an electromagnetic asymmetry.
• The display and control unit of the PT 500base system powers the asynchronous motor and permits the speed to be adjusted.
• The motor is subjected to load by the PT 500.05brake and load unit.
• The accessory set is mounted on the base plate of the machinery diagnostic base system PT 500.
• To measure and evaluate the experiment, the computerised vibration analyser PT 500.04is required.
• It includes all the necessary sensors, a measuring amplifier and analysis software to record the vibration phenomena.

Technical Details:

Specification:

• investigation of vibration behaviour of an electric motor
• asynchronous motor with adjustable gap
• asymmetric magnetic field by winding with shut-off facility
• variable speed via frequency converter of base unit
• speed display on display and control unit of base unit PT 500
• power display on display and control unit of base unit PT 500
• accessory set for PT 500 machinery diagnostic training system
• stackable storage system to house the components

Technical Data:

• Asynchronous motor with variable speed:
  • speed range: 100…6000min^-1
  • nominal power output: 370W
• Eccentricity of armature: 0…0,2mm

Dimensions & Weight:

• L x W x H: 400x300x320mm (storage system)
• Weight: approx. 11kg

Learning Objectives/Experiments:

• influence of the gap on vibration behaviour
• influence of electromagnetic asymmetry on vibration behaviour
• influence of the load on the level of vibration
• influence of the gap on electromagnetic losses and efficiency
• influence of speed on vibration behaviour
• understanding and interpreting frequency spectra
• use of a computerised vibration analyser
• in conjunction with a current measuring probe:
• measurement of current consumption per phase

Scope of Delivery:

• 1 electric motor with terminal box
• 1 storage system with foam inlay
• 1 manual

Features:

• adjustable asymmetric gap between stator and rotor
• electromagnetic asymmetry with winding that can be switched off

Accessories:

• Required:
• PT 500 Machinery diagnostic system, base unit
• PT 500.05 Brake & load unit

Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.