A variable frequency drive/ VFD Motor Drive Filter will generate
radio frequency interference (RFI) in the range of 0.5 MHz to 1.7 MHz, and electromagnetic
interference frequencies (EMI) in the range of 1.7 MHz to 30 MHz
EMI is also produced by the harmonics which are generated by the carrier frequencies, rise times and reflected waves. "Reflected waves" are caused by the capacitive effects of long motor leads and the resulting impedance mis-match between the motor cables and the motor windings. EMI/RFI is also referred to as electrical noise.
An EMI/RFI filter at the drive input terminals will provide a return path for noise that will effectively reduce the distance of noise travel along the ground grid and keep the noise away from the upstream transformer and incoming power lines
Please click on a product below to view its data sheet.
Three Phase, Dual Stage, Very High Performance, Inverter purpose (7to 2300 A)
Three Phase, Dual Stage, Very High Performance, Inverter purpose (7to 250 A)
Three Phase, Dual Stage, Very High Performance (4 to 50 A)
Three Phase, Single Stage, Good Performance, Motor Drive purpose (7 to 180 A)
Three Phase, Dual Stage, Good Performance, High Voltage purpose (7 to 180 A)
Three Phase, Single Stage, Very High Performance, Inverter Application (08 to 280 A)