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What is Power Factor and Why Does it Matter..

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Know what power factor is and why power factor tests are essential to avoid voltage issues

Know what power factor is and why power factor tests are essential to avoid voltage issues

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  • <a href="http://www.fluke.com/fluke/inen/products/Power-Quality.htm" title="Power Factor Meter">Power Factor Meters</a> and test tools are used for frontline troubleshooting. <a href="http://www.fluke.com/fluke/inen/solutions/pq/default.htm" title="Power Monitoring">Power Monitoring</a> can be used for predictive maintenance, quality of service compliance testing and load studies.
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    • 1. By Fluke Indiahttp://www.fluke.com/fluke/inen/products/Power-Quality.htm
    • 2.  A measurement that compares real power(watts) being consumed to the apparent power(Volt-Amps) of the load  A purely resistive load would have a power factor of 1.0http://www.fluke.com/fluke/inen/products/Power-Quality.htm
    • 3. • The system capacity is rated by the apparent power(kVA) which must be large enough to accommodate both the real power (kW) & reactive power(kVAR) • Since reactive power requires system capacity, but performs no work, utilities charge more for it and plants try to keep net kVARs low • High reactive power translates to low per factorhttp://www.fluke.com/fluke/inen/products/Power-Quality.htm
    • 4. • Utilities may charge higher rates or penalties for low power factor or high VARs • System capacity restrictions cause voltage drops and overheating • Inductive VARs can be corrected by applying capacitors or active conditionershttp://www.fluke.com/fluke/inen/products/Power-Quality.htm
    • 5. Sample calculation Assume the utility adds 1 % of demand charge for each 0.01 below PF of 0.97. Assume your PF averages 0.86 each month and your demand charge is $7000. (0.97 – 0.86) * 100 % = 11 % (11 % x $7000) x 12 months = $9,240 avoidable annual costhttp://www.fluke.com/fluke/inen/products/Power-Quality.htm
    • 6. • See if your utility rate plan imposes a charge for reactive demand or power factor • Find out how the utility measures power factor or VARs. For example, are they looking at peak intervals or averages? • Identify loads that are causing lagging reactive power and develop a strategy for power factor correctionhttp://www.fluke.com/fluke/inen/products/Power-Quality.htm
    • 7. • To avoid paying higher utility fees, power factor should be higher than .97 • Capacitors or conditioners may be applied on individual loads, at a confluence of several, or at the service entrance to improve power factorhttp://www.fluke.com/fluke/inen/products/Power-Quality.htm
    • 8. Company Name : Fluke Corporation - India Website: http://www.fluke.com/fluke/inen/home/default.htm Address: Deodhar Center 424, Marol Maroshi Road Andheri (E) Mumbai - 400059, India Contact Number: 1 800 209 9110 Facebook: www.facebook.com/flukeindiahttp://www.fluke.com/fluke/inen/products/Power-Quality.htm

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