ABB PST/PSTB - Advanced Softstarters
The ABB PST range of is a microprocessor based softstarter designed with the latest technology for soft start and soft stop of motors.The ABB PST Softstarter has several advanced motor protection features as standard.
The four button keypad and the logic structure of the menu make the installation, commissioning and operation easy. It is possible to choose between 14 different languages. The PST Softstarter can be used with or without a by-pass contactor except for the larger sizes PSTB370 ... PSTB1050 where the by-pass contactor is already built-in.
Wide main voltage range 208 - 690 V AC. - Wide supply voltage range 100 – 250 V, 50/60 Hz - Current ratings 30 to 1050 A (In Line) and 52 ... 1810 A (Inside Delta) - Same unit can be used for both In Line and Inside Delta connection - Premium adjustable Softstarter functions like start/stop ramp, kick start, jog, step down voltage and sequential starts. - Current limit adjustable between 2–7 x Ie - Thermistor (PTC) supervision of motor winding - Real time clock - Logging of last 20 events with time marking - Prepared for fieldbus communication - Motor overload protection with simulated motor temperature from measured current. Select between 10A, 10, 20 and 30 - Locked rotor protection - Motor underload protection - Phase imbalance protection - Phase reversal protection - Torque control - Analog output
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