Schneider Electric PM5300 Power factor min/max convention, Power factor sign convention, IEC mode

Page 78

Chapter 9—Measurements and calculations

PowerLogic™ PM5300 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.

78

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Contents PowerLogic PM5300 Series Power and Energy Meter Page Important Information Please notePage Introduction Chapter Safety Precau Tions EnceHardware Refer Chapter Power quality Chapter AlarmsChapter Multi-tariff feature Chapter Input / OutputUpgrades Chapter Meter resetsChapter Maintenance Chapter Verifying accuraPowerLogic PM5300 series user guide Box Contents Power and Energy Meter HardwareParts and Accessories IntroductionPowerLogic PM5300 user guide Safety Precautions Before You BeginPowerLogic PM5300 series user guide PM5300 Series Models, Features and Options Models, Features and OptionsFunctions and Characteristics Functions and CharacteristicsDemand Values Power Quality MeasurementsEnergy Values Other MeasurementsTechnical Specifications Electrical CharacteristicsSafety Mechanical CharacteristicsEnvironmental Characteristics Electromagnetic CompatibilitySafety precautions DimensionHuman Machine Interface Meter mounting Mounting the PM5300Meter wiring Serial No Description Specification Screw driver type M3Recommended cables Make Part code DescriptionWiring Diagrams Current Transformer Voltage disconnect switch Power systemSymbol Description Direct connect voltage limitsPower system setup parameters Power system description Meter settingSymbol 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 Ethernet configurationEthernet wiring EthernetETHERNET SwitchSWITCH/ hub/ HUB Ethernet communicationsDigital output connections Status inputsRelay outputs Status input connectionsRelay output connections Alarm / energy pulsing LED modes Front panel display and meter setupLED indicators Heartbeat / communications LEDNotification icons Meter screen menusRelated topics Menu tree PM5300 display screen menusConfiguring the basic setup parameters Front panel meter setupMeter setup screen navigation Basic setup screenBasic setup menu tree Basic setup parametersParameter Values Description Serial communications setup menu tree Communications setupSetting up serial communications Communication portsSetting up Ethernet communications Communications setup parametersEthernet communications setup menu tree Ethernet port settings HMI settingsSetting up the display Display setup menu treeDisplay setup parameters Setting up the screen passwordsSetting up regional settings Regional settings menu treeLost password Password setup menu treePassword setup parameters Clock setup parameters Setting the clock Advanced setupClock setup menu tree Advanced setup menu treeAlarm / energy pulsing LED settings menu tree Setting up the alarm / energy pulsing LEDAdvanced setup parameters LED setup parameterInput / output setup Demand setup Demand setup menu treePower or current demand setup parameters Multi-tariff setup Alarms setupRemote Meter Setup Meter data display screens Viewing Meter DataViewing meter data from the front panel Displaying data screensHarm Power PQSVolts U-V Energy EUnbal AlarmHz F MnMxTimer Using ION Setup to view or modify configuration dataUsing software to view meter data MaintInput / Output Status input applicationsStatus Input, Digital Output Ports and Relay Output Ports Navigate to I/O configuration I/O Setup Status input setupConfiguring status inputs using ION Setup Status input setup parameters available through ION SetupConfiguring status inputs using the front panel Status input setup menu treeDigital output applications Digital output setupDigital output wiring example Digital output application exampleConfiguring digital outputs using ION Setup Digital output setup parameters available through ION SetupConfiguring digital outputs using the front panel Digital output setup menu treeOn Time s This defines the pulse width on time in seconds Parameter Values Description Relay output setup parameters available through ION Setup Relay output setupConfiguring relay outputs using ION Setup Relay output applicationsSet to External or Alarm. The relay output Configuring relay outputs using the front panel Relay output setup menu treeAlarm / energy pulsing LED setup Navigate to I/O configuration Energy Pulsing Disabled turns off the LED completely Alarms About AlarmsSecond Alarms List of Standard 1-Second Over/Under Alarms AlarmDigital Alarms How the power meter handles setpoint-driven alarmsAlarm Priorities Alarm SetupUnary Alarms Using an Alarm to Control a Relay and Digital OutputSetting Up 1-Second Alarms Setting Up 1-Second Alarms Setting Up Unary Alarms Setting Up Digital Alarms Setting Up Digital Alarms Viewing Alarm Activity and History Viewing Active Alarms and Alarm CountersViewing Unacknowledged Alarms and the Alarm History Log PowerLogic PM5300 series user guide Alarms Data Logs Data LogsDescription Number of Registers Data Type Register Number Alarm Log Alarm Log StorageMemory Allocation for Log Files 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 exampleMulti-tariff feature Multi-tariff feature exampleMulti-tariff feature overview Time format Command mode overviewTime of day mode overview Front panel date and time formatTariff creation method Example tariff configurations for a four-tariff systemConfiguration 1 four tariffs with weekdays and weekends Tariff Type Start date End date Start time End timeConfiguration 2 2 tariff assignment using 2 digital inputs Input mode overviewConfiguration 1 2 tariff assignment using 2 digital inputs1 Digital input requirements for required number of tariffsTariff setup menu tree Configuring tariffs using the front panelConfiguring time of day mode tariffs using the front panel Time of day mode tariff setupConfiguring input mode tariffs using the front panel Harmonics 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 13th to 21st harmonics for line-to-neutral voltageRelated topics Testing overview Verifying accuracyAccuracy test requirements Location of energy pulsing LED Reference device or energy standardEnergy pulsing PM5300Verifying accuracy test Calculating total power Percent error calculationCalculating the number of required pulses 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 PM5300 series user guideChapter 13-Meter resets 102 Power Meter Memory Maintenance and UpgradesPassword Recovery Identifying the Firmware Version, Model, and Serial NumberDownloading Firmware Control PowerAdditional Meter Status Information MeterTroubleshooting Heartbeat/Comms LED105 Getting Technical Support Register List TroubleshootingPotential Problem Possible Cause Possible Solution 106MID overview Specifications relevant to MIDMID Compliance MID compliance for the meterInstallation and wiring MID ComplianceDefault PM5331/PM5341 display screen Installing the terminal coversPM5331/PM5341 default screen Location of terminal coversLock-protected setup parameters MID-protected setup parametersLock-protected setup parameters Meter firmware versionSetting up the PM5331/PM5341 Initializing the meterSetting up lock password Navigate to Maint Setup Meter LockLocking or unlocking the meter Glossary Terms113 114 Abbreviations 115116 117 118 Page Schneider Electric 35, rue Joseph Monier CS
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