https://www.automationdirect.com/drives/ac-drives (VID-DR-0005)
How to select the right AC Drive, Part 4 of 4
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three steps to selecting the right AC drive this is step three selecting the accessories you might ask what types of options are recommended for the GS and durapulse series drives there are several accessories available to help protect and extend the life of the AC drive and motor these accessories include input fuses input line reactors input Emi filters output line reactors and dynamic braking units input fuses protect the AC drive from excessive input current due to line surges short circuits and ground faults they are recommended for all installations and may be required for UL listed installations input fuse kits and replacement fuses are available for the GS series and durapulse AC drives the input line reactor protects the AC drive from trans transient over voltage conditions typically caused by utility capacitor switching the input line reactor also reduces the harmonics associated with AC drives input line reactors are recommended for all installations the input Emi filter reduces electromagnetic interference or noise on the input side of the AC drive it is required for C compliance and recommended for installation prone to or sensitive to electromagnetic interference the output line reactor protects the motor insulation against Drive short circuits and igbt reflective wave damage output line reactors also smooth the motor current waveform allowing the motor to run cooler the line reactor can be used for either input or output applications output line reactors are recommended for operating non-inverter Duty Motors and when the length of wiring between the AC Drive in the motor exceeds 75 ft Dynamic braking allows the AC drive to produce additional braking torque AC drives can typically produce between 15% and 20% braking torque without the addition of any external components the addition of optional braking may be required for applications that require rapid deceleration or high inertia loads the GS2 durapulse and sj300 AC drives have built-in braking circuits on all units below 15 horsepower these drives still require the addition of a braking resistor ratings larger than 15 horsepower require separate braking units in addition to the braking resistors for additional accessories visit our website or contact our technical support team
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