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Electric motors, taken together, make up the single largest end use of electricity in many developed countries. In many developed countries, in industrial applications, electric motors account for roughly 60% of electricity consumption; in the process industries, electric motors can account for more than 70% of electricity use.
The cost of running a motor can be as much as ten times to the purchasing cost of a motor. Therefore operation of motors represents a huge potential for energy savings.
The electric motor does not function in isolation: the motor driven unit (MDU) consists of the electric motor, sometimes controlling equipment such as a soft starter or variable speed drive (VSD), supporting mechanical equipment (gear, belt, clutch, brake…) and the application it is driving (pump, fan, compressor). The motor system also includes all other components that suffer from energy losses while executing its function (water or air ducts, throttles, valves). Optimizing this entire motor system is the best way to minimize energy use and CO2 emissions.
Today an increasing amount of fixed rate/rpm drives and motors are replaced by optimized Variable Frequency Drives / Variable Speed Drives (VFD/VSD).
A variable frequency drive is a motor controller that is used to change the speed of an AC motor by changing the frequency of the supply voltage. VFDs allow a motor to be operated at almost any speed. The speed can be changed gradually, allowing the drive to control motor acceleration and deceleration. Drives may also feature many motor control functions, motor torque control and motor braking.
These VFD units can realize very significant cost and energy savings, when installed and configured correctly:
40-60% of all motor systems would benefit from the proper use of Variable Frequency Drives (VFD) to improve the energy efficiency of industrial motor systems.
Energy Savers provide an extensive portfolio of VFDs ranging from ABB, Danfoss and Mitisubishi. Size 1hp -500hp
Troubleshooting & Correct Calibration Variable Frequency Drives
However, we often find sub-optimal installations:
Our VFD Optimization engagements realize regularly efficiency improvements of +20% and net ROI Break-even within less than 6 months
Preventive maintenance is defined as regularly scheduled inspections, tests, servicing, replacements, repairs and other tasks intended to help reduce the impact and frequency of equipment failures. This includes scheduled preventive maintenance, predictive maintenance and inspection activities.
The purpose of preventive maintenance is to try to maintain the equipment in optimum working condition and to help prevent any unplanned downtime due to breakdowns. Because components start to wear over time, replacing items prior to failure can cost you far less than the potential consequences of failure while in service. Some people see maintenance as an expense and it can often be one of the first departments to suffer from cuts during difficult times, however, this is very much false. Preventing problems from occurring will almost always be far less than the costs you will incur due to actual failures
Benefits of Electrical System Preventative Maintenance:-
Our qualified field service engineers provide comprehensive maintenance and testing services with a scope of work that includes:
and other services.
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