www.eaton.com IM02601004E Page 916 Functions on the Web Server PagesEnergy ComparisonThe Energy Comparison page shows the same information as the Energy Profile, but allows you tocompare data as follows:• This Week with Last Week• This Month with Last Month• 2 different Weeks• 2 different MonthsTo locate this page, select Energy Comparison from the drop-down box.Point Timestamp Wh Timestamp Wh1 August 01, 2010 12:00 AM -0400 48620.69922 August 29, 2010 12:00 AM -0400 43385.199222 August 02, 2010 12:00 AM -0400 125228.00000 August 30, 2010 12:00 AM -0400 123068.000003 August 03, 2010 12:00 AM -0400 128115.00000 August 31, 2010 12:00 AM -0400 130590.000004 August 04, 2010 12:00 AM -0400 120393.00000 September 01, 2010 12:00 AM -0400 138424.000005 August 05, 2010 12:00 AM -0400 118050.00000 September 02, 2010 12:00 AM -0400 123612.000006 August 06, 2010 12:00 AM -0400 100662.00000 September 03, 2010 12:00 AM -0400 80656.000007 August 07, 2010 12:00 AM -0400 49797.69922 September 04, 2010 12:00 AM -0400 54777.5000009/29/201009/01/2010To:To:08/29/201008/01/20102 different MonthsFrom:From:Compare:ComparisonViewEnergy Comparison18 Aug 08 07:38:48Last Demand Reset:ARate:Active-----------------------------------Display Demand in AmpsSumNetDeliveredReceivedkVARh / kVARkVAh / kVASumNetReverseForwardkWh / kWENERGY / DEMANDEnergy1 - NY Sales Office11:33 AM -0400 Oct 08, 2010QUALITYThe Quality section of the Power Xpert Meter outlines the measurements that have been calculatedand describes the health of the system. It consists of seven main sections of information, THD Cur-rent, THD Voltage, K Factor, Crest Factor, Flicker and 9’s of Availability.THDThe Total Harmonic Distortions (THD) is the ratio, expressed as a percent, of the rms value of theac signal after the fundamental component is removed and inter-harmonic components are ignored,to the rms value of the fundamental. The formula for THD is provided below. The variables X 1 andxn may represent either voltage or current and may be expressed either as rms or peak values, aslong as all are expressed in the same fashion.X1 = fundamental value of current or voltage.xn = nth harmonic value of current or voltage.CURRENTThe THD Current is calculated for peak phase A, B and, C as Amperes. Meanwhile, the TDD% iscalculated as a percentage of peak demand current. The THD Current is individually measured forOdd, Even and Inter Harmonics. Maximum THD Current is determined using individual phase THDCurrents. All of the THD Current measurements in the Power Xpert Meter are trended and mini-mum and maximum values are logged with date and time stamps.
