Drive Output Filter/Choke
Drive Output Filter/Choke
(OP)
Is anyone aware of an output filter/choke capable of limiting dV/dt to 500V/microsec.? I have a submersible motor application with a maximum of 200ft. wire run between the drive and the motor. This is a 460VAC/3ph./60Hz. application operating a 75Hp motor. The filters I’ve reviewed thus far are capable of limiting dV/dt to 700-800V/microsec. Any suggestions will be greatly appreciated. Thanks.





RE: Drive Output Filter/Choke
Is ther a particular reason you need to keep the dv/dt under 700 v/us?
RE: Drive Output Filter/Choke
http://www.transcoil.com
RE: Drive Output Filter/Choke
The motor manufacturer specifies that the dV/dt must be 500V/usec or less. NEMA MG1 Part 31 does not address submersible motors but the manufacturer has placed this stipulation on their equipment due to design. Line inductors at the motor are obviously not a solution since this is a submersible motor application. Thanks for the information.
jbartos:
Thanks for the suggestion. I've actually been working with them trying to resolve this issue. We usually purchase all of our filter or reactor components from them.
RE: Drive Output Filter/Choke
Sorry for the commercial response, and it may be too late to help, but Princeton Power has recently developed a 75hp 480VAC VSD that generates dV/dt of five (5) V/us, without using any inductive filtering. It is based on a technique called AC-link, which operates differently from PWM. Check out:
www.princetonpower.com
RE: Drive Output Filter/Choke