Scroll compressor soft starters
By Alison Dunn
Carlo Gavazzi has launched the latest addition to their full line of scroll compressor soft starters: the 55, 75 and 90Amp RSBT and RSBD Series. The growing market of heat pumps and the global drive toward reduction of CO2 emissions are contributing to a steady growth of low-consumption and energy efficient HVAC systems. OEMs understand the need to reduce high starting currents of compressor used in such systems so as to minimize voltage fluctuation and light flickering. The new, higher amperage, RSBT and RSBD Series of 3- and 2- phase controlled scroll compressor soft starters are an extension of the existing RSBT Series to cover most existing scroll compressor ratings available in the market. Equipped with the patented auto-adaptive algorithm, an optimized inrush current reduction with every start is achieved without any user setting, making it a simpler product to deploy and operate. Without a need for any external sensors, soft starters offer a number of built-in diagnostic functions to protect the user’s system against potentially harmful conditions such as wrong phase sequence and locked rotor condition.