TABLE OF CONTENTS1 GENERAL ................................................................................................................................. 41.1 Summary ................................................................................................................................... 41.2 Definition ................................................................................................................................... 41.3 Applicable Codes and Standards .............................................................................................. 52 PRODUCTS .............................................................................................................................. 72.1 Basic Requirements of the VSDS ............................................................................................. 72.2 Site Conditions .......................................................................................................................... 72.3 Degree of Protection ................................................................................................................. 82.4 Ratings ...................................................................................................................................... 82.5 Electrical Supply System........................................................................................................... 83 PERFORMANCE REQUIRMENTS OF THE VSDS ................................................................. 93.1 General...................................................................................................................................... 93.2 System Control .......................................................................................................................... 93.3 Number of Sequential Starts ................................................................................................... 123.4 Transient Torques ................................................................................................................... 123.5 Critical Speeds ........................................................................................................................ 133.6 Harmonics at the Line Side ..................................................................................................... 133.7 Electromagnetic Compatibility ................................................................................................. 133.8 Pulsating Torques ................................................................................................................... 133.9 Pulsating Currents ................................................................................................................... 133.10 Output Filter ............................................................................................................................ 143.11 Input Filter ............................................................................................................................... 143.12 Braking Resistor ...................................................................................................................... 143.13 Heat Loss ................................................................................................................................ 143.14 Functional Safety (If applied) .................................................................................................. 14