Contents1 Introduction 41.1 Purpose of the Design Guide 41.2 Document Version 41.3 Intended Use 41.4 Abbreviations, Symbols, and Conventions 41.4.1 Abbreviations 41.4.2 Conventions 51.5 Approvals and Certifications 51.5.1 CE Conformity and Labeling 51.5.2 CE Mark 51.5.2.1 Low Voltage Directive 51.5.2.2 EMC Directive 61.5.2.3 Machinery Directive 61.5.2.4 ErP Directive 61.5.3 UL Compliance 61.6 Safety 61.6.1 General Safety Principles 61.6.2 Qualified Personnel 62 Introduction to Harmonics and Mitigation 92.1 Harmonics and Mitigation 92.1.1 Linear Loads 92.1.2 Non-linear Loads 92.1.3 The Effect of Harmonics in a Power Distribution System 112.2 Harmonic Mitigation Standards and Requirements 122.2.1 Application-specific Requirements 122.2.2 Harmonic Mitigation Standards 122.3 Harmonic Mitigation 143 Basic Operating Principle of the AHF 153.1 Operating Principle 153.1.1 Power Factor 163.1.2 Capacitive Currents 173.2 Energy Efficiency 174 Requirements for Installation 184.1 Mechanical Mounting 184.1.1 Safety Requirements of Mechanical Installation 184.1.2 Mounting Requirements 204.1.3 Recommendations for Installation in Industrial Enclosures 20Contents Design GuideMG80C602 Danfoss A/S © 05/2019 All rights reserved. 1