EMC filters

Rutronik is aiming at 3-phase industrial control cabinets with a DIN-rail mount mains filter series from Schurter. “The housing, with a width of just 44mm, requires extremely little space on the mounting rail,” said distributor Rutronik. “The single-stage filter is available as a standard version or with high attenuation. FPAC RAIL impresses above all with its leakage current of just ...

Danfoss Power Solutions has launched a 250kVA 560Vac three-phase mains filter for heavy all-electric vehicles that are powered directly from the grid. “All components are rated for 300Arms. EC-LCL1200B-350 [is] a heavy-duty LCL electric filter specifically designed for off-highway applications,” according to the company. “Applications include drilling equipment, material handling equipment and tethered excavators.” It is suited to both 50 ...

Emis has created a range of three phase, dual stage EMC filters designed for industrial motor and drive systems across 5 to 170kW. TMF3221 and TMF3222 “are housed in a space-saving slim book-shelf enclosure which may be installed next to inverters, converters or motor drives”, according to the company. “The devices are designed to meet the needs of power drive ...

EMI Solutions has introduced three-phase single-stage chassis-mount mains EMI filters aimed at common mode and differential mode suppression. Called the MF423-3W series, they come in four footprints: 1-10A: 85 x 51mm 15-40A: 128 x 121mm 50-60A: 100 x 107mm (pictured) 75-150A: 350 x 160mm Currents are at 40°C (range is -25 to +85°C) and in each case the first dimension ...

ITG Electronics will feature 600Vac common-mode chokes at APEC in February, which offer “higher voltage ratings and more robust hipot Isolation between two windings – the products address increasing demand for industrial, under-the-hood inverter applications”, it said. That hipot isolation is 2,500Vac. There are two series: C301306H measuring 44 x 48 x 34mm, and C301369H at 34 x 35 x 26mm. ...

Spectrum Control has introduced a family of modular power EMI filters for designs meeting MIL-STD-461. 52F1825 filters operate across -55° to 75°C and the “rugged design includes a convenient, environmentally sealed input interface that withstands moisture, dust, and other contaminants to ensure durability and longevity”, according to the company. The models come with a 89 x 127mm footprint in a ...

Cornell Dubilier Electronics is aiming at harsh environments with a series of X2, EMI-RFI suppression capacitors. “The MXH series is AEC-Q200 qualified and has been temperature, humidity and bias (THB) life tested. “The 2,000-hour test conducted at 85°C, 85% relative humidity at rated voltage subjected these components to twice the standard test hours required to meet IEC 60834, Class III-B ...

Schaffner is aiming at robots and other industrial applications with a range of three-phase mains interference filters. “FN3040, FN3041, FN3042 and FN3043 EMC filters are rated for currents of 10 to 30A at 50°C,” according to the company. “The tight-packaged filters are smaller than their predecessors yet offer superior performance.” Size is 128 x 63 x 50mm tall for the ...

At APEC in Florida, Texas Instruments introduced a family of ICs designed to shrink the size of EMC anti-emission common-mode filters in single and three-phase mains and automotive power converters. In principal, the ICs implement a capacitance multiplier circuit to emulate the Y-capacitors in a conventional passive filter design. They do while sitting amongst smaller filter inductors and capacitors (top ...

I was sitting in on a briefing about up-coming APEC, and someone from TI mentioned an aspect of dc-dc converter IC from a year or two ago that I had overlooked. TI’s LM25149 has the option to engage a novel spectrum-spreading signal that is intended to supress generated EMI below 30MHz (so ~conducted) and above 30MHz (so ~radiated). Called dual ...