Schneider Electric PM5100 Power factor min/max convention, Power factor sign convention, IEC mode

Page 62

Chapter 8—Measurements and calculations

PowerLogic™ PM5100 series user guide

 

 

Power factor min/max convention

The meter uses the following convention for power factor minimums and maximums:

•For negative PF readings, the minimum PF value is the measurement closest to -0 for PF readings between -0 to -1. For positive PF readings, the minimum PF value is the measurement closest to +1 for PF readings between +1 to +0.

•For negative PF readings, the maximum PF value is the measurement closest to -1 for PF readings between -0 to -1. For positive PF readings, the maximum PF value is the measurement closest to +0 for PF readings between +1 to +0.

Power factor minimum and maximum

-1.0

 

-0.8

1.0

 

 

 

 

.8

 

 

-0.6

 

.6

 

 

 

 

 

Negative PF values

-0.4

 

.4

Positive PF values

[ - ]

 

 

 

[ + ]

 

-0.2

 

.2

 

 

 

 

 

 

 

 

+0

 

Minimum PF [ - ]

-0

Maximum PF [ + ]

 

Power factor sign convention

You can set the power factor sign (PF sign) convention by changing the HMI mode to either IEC or IEEE.

Power factor sign convention

Reactive

Power In

 

 

 

 

Quadrant

 

Quadrant

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

1

 

 

 

 

 

 

 

 

 

watts negative (–)

 

watts positive (+)

 

 

vars positive (+)

 

vars positive (+)

 

 

power factor (–)

 

power factor (+)

 

 

 

 

 

Reverse

 

Normal

Real

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power Flow

 

Power Flow

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

 

 

 

watts negative (–)

 

watts positive (+)

In

 

 

 

 

vars negative (–)

 

vars negative (–)

 

 

power factor (–)

 

power factor (+)

 

 

 

 

 

Quadrant

 

Quadrant

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IEC mode

Reactive

Power In

 

 

 

 

Quadrant

 

Quadrant

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

1

 

 

 

 

 

 

 

 

 

 

 

 

watts negative (–)

 

watts positive (+)

 

 

 

 

vars positive (+)

 

vars positive (+)

 

 

 

 

power factor (+)

 

power factor (–)

 

 

 

 

 

 

 

Reverse

 

Normal

 

 

Real

 

 

 

 

Power Flow

 

Power Flow

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

 

 

 

 

watts negative (–)

 

watts positive (+)

 

 

In

 

 

 

 

 

 

vars negative (–)

 

vars negative (–)

 

 

 

 

power factor (–)

 

power factor (+)

 

 

 

 

 

 

 

Quadrant

 

Quadrant

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IEEE mode

IEC mode

In IEC mode, the PF sign follows the direction of power flow. PF sign is positive (+) for positive (normal) power flow. PF sign is negative (-) for negative (reverse) power flow.

62

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Contents PowerLogic PM5100 Series Power and Energy Meter Page Important Information Please notePage Hardware Refer Introduction Chapter Safety Precau TionsEnce Calculations Chapter AlarmsChapter Measurements Chapter MID ComplianceGlossary Table of Contents PowerLogic PM5100 series user guide Box Contents Power and Energy Meter HardwareParts and Accessories IntroductionIntroduction Safety Precautions Before You BeginPowerLogic PM5100 series user guide PM5100 Series Models, Features and Options Models, Features and OptionsFunctions and Characteristics Functions and CharacteristicsTechnical Specifications Mechanical Characteristics Environmental CharacteristicsElectromagnetic Compatibility Safety precautionsSafety CommunicationDimension Meter mountingMounting the PM5100 Meter wiring Serial No Description SpecificationRecommended cables Make Part code DescriptionWiring Diagrams 3CT 2CTDirect connect voltage limits Power systemSymbol Description Current TransformerSymbol Power system setup parameters Power system descriptionMeter setting Current input protection Voltage and current input wiringVoltage input protection Direct connect maximumBalanced system considerations Control power wiringCommunications Serial communicationsRS-485 cable RS-485 wiringRS-485 network configuration RS-485 maximum cable lengthDigital outputs Digital output connectionsPowerLogic PM5100 series user guide Hardware Reference Alarm / energy pulsing LED modes Front panel display and meter setupLED indicators Heartbeat / communications LEDRelated topics Notification iconsMeter screen menus Menu tree PM5100 display screen menusConfiguring the basic setup parameters Front panel meter setupMeter setup screen navigation Basic setup screenParameter Values Description Basic setup menu treeBasic setup parameters Serial communications setup menu tree Communications setupSetting up serial communications Communications setup parametersSetting up regional settings HMI settingsSetting up the display Display setup menu treeRegional settings setup parameters Setting up the screen passwordsRegional settings menu tree Password setup menu tree Setting the clockLost password Password setup parametersAdvanced setup menu tree Advanced setupClock setup parameters Parameter Format DescriptionAlarm / energy pulsing LED settings menu tree Setting up the alarm / energy pulsing LEDAdvanced setup parameters LED setup parameterPower or current demand setup parameters Output setup Demand setupDemand setup menu tree Alarms setup Remote Meter SetupFront panel display and meter setup Meter data display screens Viewing Meter DataViewing meter data from the front panel Displaying data screensHarm Power PQSVolts U-V Energy EUnbal AlarmTimer MnMxClock Using ION Setup to view or modify configuration dataUsing software to view meter data Digital output applications Digital output setupInput / Output Digital output setup menu tree Alarm / energy pulsing LED setupConfiguring digital outputs using the front panel Navigate to I/O configuration Energy Pulsing Input / OutputPowerLogic PM5100 series user guide Second Alarms AlarmsAbout Alarms List of Standard 1-Second Over/Under Alarms AlarmUnary Alarms Alarm PrioritiesAlarm Setup Setting Up 1-Second Alarms Setting Up 1-Second Alarms Viewing Alarm Activity and History Setting Up Unary AlarmsViewing Active Alarms and Alarm Counters Viewing Unacknowledged Alarms and the Alarm History Log PowerLogic PM5100 series user guide Alarms Real-time readings Power factorMeasurements and calculations EnergyIEC mode Power factor min/max conventionPower factor sign convention Power factor minimum and maximumDemand Power demand calculation methodsIeee mode Block interval demandSynchronized demand Block interval demand exampleThermal demand Current demandPredicted demand Thermal demand examplePeak demand Predicted demand exampleHarmonics overview Power qualityHarmonic content calculations Total Harmonic Distortion and Total Demand DistortionTHD and thd calculations Viewing harmonics using the front panelDisplaying harmonics data TDD calculationViewing TDD Viewing THD/thd using the front panelPower Quality display screen Example 7th to 15th harmonics for line-to-neutral voltageRelated topics Accuracy test requirements Testing overviewVerifying accuracy Location of energy pulsing LED Reference device or energy standardEnergy pulsing PM5100Verifying accuracy test Calculating the number of required pulses Calculating total powerPercent error calculation Energy pulsing considerations Total power limit for alarm / energy LEDTotal power limit for digital output VT and CT considerationsWatt-hour test points example Typical sources of test errorsTest points Var-hour test points exampleGlobal resets Meter resetsFront panel meter reset screens Reset menu treeAlarm counter options Single resetsSingle reset options Alarm counter Option DescriptionPowerLogic PM5100 series user guideChapter 11-Meter resets Meter resets Power Meter Memory Maintenance and UpgradesPassword Recovery Identifying the Firmware Version, Model, and Serial NumberDownloading Firmware Control PowerAdditional Meter Status Information MeterTroubleshooting Heartbeat/Comms LEDGetting Technical Support Register List TroubleshootingPotential Problem Possible Cause Possible Solution MID overview Specifications relevant to MIDMID Compliance MID compliance for the meterInstallation and wiring MID ComplianceDefault PM5111 display screen Installing the terminal coversPM5111 default screen Location of terminal coversLock-protected setup parameters MID-protected setup parametersLock-protected setup parameters Meter firmware versionLocking or unlocking the meter Setting up the PM5111Initializing the meter Setting up lock password Irrecoverable PasswordGlossary TermsPowerLogic PM5100 series user guide Abbreviations PowerLogic PM5100 series user guide Page Schneider Electric 35, rue Joseph Monier CS
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