EMA provides Energy Saving Variable Frequency Drives for Pumps and Pump Applications

Let's face it, electronic motor drives were made for centrifugal pumps.  They save energy, stop water hammer, conserve pump life, and provide much better control of flow, level  and pressure than valves.     EMA provides pump drives, and pump control  systems, custom designed for your application. Call 877-207-2286 toll free or email edmayfield@emainc.net

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EMA can do COMPLETE pump control packages including PLCs, Touch Screen Operator Controls, SCADA, Pump sequencing, and closed loop control.

How do Variable Frequency Drives Save Energy?

A set of mechanical laws known as the pump and fan affinity laws govern the loading of centrifugal fans and pumps.  These laws state that the power consumed will change by the change in speed cubed!   This far exceeds any savings possible by closing valves!

Let's take a simple example:  Suppose you have a  pump, running across the line, at 60 Hz, drawing 100 KVA from the power line.   Let's then suppose that we turn the speed down with a drive just 10%, or to 54 Hz.

Using what we know about the affinity laws, we'd take

.90 X .90 X .90 = .72  (90% speed cubed)

Our Power Consumed would now be 100 KVA X .72 = 72 KVA

In other words, a 10% change in speed resulted in a 28% reduction in power consumed!   That's how Variable-Frequency Drives save energy!

In addition to saving energy, using drives often can save costs within many irrigation systems by reducing water wasted by over pressurization.

Drives are easily applied these days, especially when you get them from us.

Call EDDIE MAYFIELD at 877-207-2286 or email him at edmayfield@emainc.net.    Visit our home page at www.emainc.net for further information!