Use Of KT7 Motor Controllers With Variable Frequency Drives
A motor branch circuit including a variable frequency drive and one or more KT7 Motor Controllers is a complex system. Successful performance depends on all components, devices and their interconnections. Several key points must be considered when using KT7 devices with VFDs.
What Is The Replacement For KTA3-100 Motor Controllers?
I have a KTA3 in my multi-motor control panel. What is the replacement? What are the alternatives to KTA3 Motor Controllers? KTA3-25 controllers transitioned to KT4 or KT7 controllers. KTA3-100 controllers were replaced with KT7 controllers, but only up to 45 amps.
KF7 fuse holders can be applied on the line side of KTA7 or KTC7 motor circuit controllers and matching CA7 contactors. KF7 can also be connected on the line side of a CA7 contactor and/or starter as you would a standard fuse holder. This can increase a panels KAIC rating.
How To Choose The Right KT7 Busbar Power Wiring System
There are several different types of bus bar systems available. How do I know which system to choose for my assembly? If I have an old bus bar system, what is the current replacement recommendation? What if I need to add a unit to an existing system?
Unlike the fuse box in most residential power centers, industrial circuit protection can rarely be reused after a short-circuit. Some products are specifically tested by UL to withstand a short circuit.