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Enersavers™ Controller
Case Study - Otis Elevator (AC Motor Generator Set)
Delivering energy savings for a 40hp MG Set Motor
 The Enersavers™ Controller allowed an energy savings of up to 23% for an annual savings of $1,029.04.
The Opportunity :
AC motor generator sets used in elevators represent ideal candidates for the Enersavers™ Controller technology by reducing motor losses when an AC motor is not performing at its most efficient design point. There are three ways the Enersavers™ Controller saves energy during the operation of a MG set powered elevator:
- Savings when the car is idle
- Savings when the car is moving
- Savings with excessive inrush current during repeated motor starts
The Enersavers™ Controller can save energy during all phases of an elevator's operation. The amount of energy depends upon the frequency of use, periods of idle operation, and number of motor starts after periods of idle operation.
The Challenge :
Energy conservation is an important issue in today's environment. AC induction motors are intrinsically inefficient when operating at less than full work load. Statistics compiled by the Electric Power Research Institute (EPRI) indicate that 60% of all motors are being operated at 60% or less of the work load for which they were designed. Under such conditions, and in certain applications, AC motors can waste as much as 55% of the electrical energy they consume.
These energy inefficiencies, along with the rising cost of electricity, are contributing to the shrinking profit margins of businesses. Government energy efficient mandates are being put in place to make it even more attractive for companies to save electricity. The Enersavers™ Controller is a perfect solution to take advantage of these energy efficient programs providing even faster pay back on your investment.
For more Information
To find out more about Enersavers™ products and solutions, call us at +65 6325 1028.
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