REO-USA has introduced the 400V three-line CNW933 sinusoidal filter range as an equally robust yet more cost effective solution to shielded cables.
The cost of cables is rising in manufacturing as the result of the need for lengthy shielded cable to tackle attenuation and electromagnetic compatibility (EMC) issues. Compounded by increasing commodity prices, this is leading many original equipment manufacturers (OEMs) to look for cost effective solutions.
Available in several models rated from 2-1,200A, the CNW933 eliminates the need for shielded cable by suppressing unwanted frequencies. This is achieved through an efficient use of various inductance and capacitance solutions, which eradicate harmonic currents, smoothing the peak waveform created by PWM and producing a near sine wave supply. Motor life is increased while noise, mechanical stress and thermal conduction are alleviated.
With the new filter, the company says, cable savings in a typical drive installation using a 4kW drive at a distance of 650 feet from the motor can reach $150, while savings for a typical 160kW installation is approximately $2,400.
Optional features include conformity to UL insulation system E251513, adaptation to motor cables up to 3280 feet and high ingress protection (CNW M 933 IP) or other customer specific solutions.
