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What does total cost of ownership mean to you

3 April 2017


What does total cost of ownership mean to you

Total Cost of ownership (TCO) is used as a tool in industry to realise the actual cost of purchasing and running an electric motor over its lifespan.
It has been referred to in the past as the iceberg effect;
  • The part above water is what you can see and feel, this is the direct costs “Capital expenditure”
  • The part below is all of the other costs that often go unseen when choosing a product.
It has been estimated that 70 – 80% of the world’s Industrial electrical energy is absorbed through the induction motor.  This can often mean that the purchase price can be as little as 2% of the overall running costs throughout the lifespan.
With this fact in mind we have been led to believe newer higher efficiency motors are all we need to combat our TCO.
BUT what good is this when the wrong motor is selected for the job and the motor does not reach anywhere near its expected lifespan due to external effects.
  • A typical Quarry or Mining environment is notorious for being one of the harshest working environments on the planet.
  • Critical ambient conditions, solid contamination (dust) and severe processes are just some of the major factors present at a mine site.
  • By tailoring an individual solution for the mining industry, Technidrive is able to effectively lower the total cost of ownership.
So, what are we saying? Don’t worry about motor efficiency! – NOT IN THE SLIGHTEST but also concentrate on route cause of failure to reduce the effects of what lies beneath the iceberg.   
Many motors fail prematurely due to motor ancillary components not being suitable for the environment;
  1. Incorrect bearings due to Axial or Radial load – i.e. high radial loads often require the aid of a drive end Roller bearing where most motors are manufactured with a standard 6000 series ball bearing.
  2. IP Rating – A standard motor will come as IP55 which can often be unsuitable to very wet and dusty environments when mixed together.
  3. Winding Service factor – A standard motor will have a 1.0 Sf when running at its designed full load / full Voltage.
With our range of WEG E3 Mining Spec motors you can achieve protection against all of the above in one motor without the need for any additional factory extras.  This motor not only meets IE3 minimum efficiency levels but comes in close to IE4 efficiency levels.  (This can be evaluated on a case by case basis)
 
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