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| Variable Frequency Drives - Features and Benefits |
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Last Updated 9th of July, 2009
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DEKKER VmaxVFD vacuum systems offer the most reliable and energy efficient systems today. DEKKER's advanced design combines the proven benefits of our Vmax oil-sealed liquid ring vacuum pumps with variable frequency drive (VFD) motor speed control. The vacuum systems are micro-processor controlled and offer substantial energy savings by automatically adjusting pump speed to match varying vacuum demand. This eliminates frequent stop-starts and results n more stable vacuum levels.
Design Features VFD motor control lowers energy costs by adjusting speed to match varying vacuum demand.
VFD "soft start" ramps motor speed gradually to extend system life and lower maintenance needs and reduce initial inrush current.
This new approach to energy efficient vacuum systems allows simple cost-effective expansion for customers who anticipate future building plans or increased demand.
Proprietary intelligent logic control monitors pumps and adjusts sequencing of multi-plex systems as availability or demand changes.
DEKKER liquid ring vacuum pumps have only one moving part which results in cooler and quieter operation, high reliability, increased up time, and lower maintenance costs.
Reliable for tough applications such as woodworking and soil remediation, the VmaxVFD is built to tolerate accidental carry-over of liquids and soft solids.
Benefits Control of power consumption - up to a 50% turn down in power equating to energy savings. Example: In a facility operating a 40HP vacuum pump system with a Variable Frequency Drive, let us assume the system wiould be running at a maximum load for only 50% of the time. The VFD would be in operation the rest of the time at a maximum turndown, resulting in reduced power consumption of 50%. A 40HP vacuum system with VFD yields the following results:
 
Control of current inrush - soft starting reduces wear on system components and eliminates current inrush during startup. When using conventional across the line starting, inrush current during startup will be 6 – 7 times motor running amps. Power companies analyze these spikes and their frequency and charge customers for these spikes. By using a Variable Frequency Drive these spikes are eliminated by softly starting equipment.
Control of vacuum - Maintains vacuum level as leakage in the process increases.
Controls material damage and waste - reduced slippage in hold-down applications results in less material damage and material waste.
Controls costs and Return On Investment - quick payback of system investment. When you consider the power savings resulting from elimination of current inrush, cost savings from reduced power consumption, savings in power wire sizing, and savings on protection equipment,the return on investment on a new systems with the additional cost of a VFD is less than 1 year.
For more information about Dekker Vacuum Technologies, visit our web site at www.dekkervacuum.com
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