Thanks to their innovative and intelligent design, the BR6000 series power factor controllers enjoy worldwide popularity, according to the manufacturer, Epcos. Via thyristors, they can switch PFC capacitors on or off in six or 12 stages in the millisecond range to bring the power factor of the inductive load connected as close as possible to unity.
The new BR604 model with its four-stage design has been specially developed by Epcos for applications requiring only a few stages. The only visible difference between the BR604 and the larger models in the series are its compact dimensions of only 100 x 100 x 44 mm; it has the same convenient user interface based on plain text messages, menu-driven selection and a multifunctional LCD display with two rows of 16 alphanumerics.
The PFC controller integrates 23 preset control series with a self-optimised, intelligent control mode, which substantially simplifies manual starting. The outputs can be programmed to operate with a fixed number of stages or skip individual stages as required. The PFC controller can also switch from automatic to manual operation. This function is important for test runs, says the company. As well as malfunctions, various AC line parameters can be displayed. Maximum values are stored in the memory and the controller also features zero-voltage release and four-quadrant operation.
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