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NEMA ICS 2.4:2003 (R2012)

NEMA ICS 2.4:2003 (R2012) Industrial Control And Systems: Nema And Iec Devices For Motor Service - A Guide For Understanding The Differences Specifies different philosophies behind IEC Standards and NEMA Standards. Helps users make sound selection decisions.

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Table of Contents

Foreword
Section1GENERAL
1.1ReferencedStandards
1.1.1Scope
1.2Markings
1.2.1NameplateMarkings
1.2.2ULMarkings
1.3References
1.4Conventions
1.5DesignPhilosophies
1.5.1TraditionalNEMAContractors
1.5.2TraditionalIECContractors
1.5.3NEMAThermalOverloadRelays
1.5.4IECthermalOverloadRelays
1.5.5NEMAMotorControllers
1.5.6IECMotorControllers
Section2SELECTIONCONSIDERATIONS
2.1UtilizationCategories
2.2ContractorElectricalLife
2.2.1ElectricalLifeTestParameters
2.2.2HowtoUseElectricalLifeCurves
2.3MixedOperationLifeforContractorsUsing
IECProcedure
2.4HowtoUseContractorRatings
2.5EnvironmentalFactors
Section3TERMINALMARKINGANDWIRINGCONVENTIONS
3.1General
3.2NorthAmericanConvention
4COMPARISONS
4.1PhysicalCharacteristics
4.2ElectricalLife
4.3OvercurrentProtection
4.3.1OverloadRelayClassApplications
4.3.2MotorAccelerationTime
4.3.3Short-CircuitCurrentRating
4.4TerminalTemperatureRise
4.5Construction
Figures
Tables

Abstract

Specifies different philosophies behind IEC Standards and NEMA Standards. Helps users make sound selection decisions.

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