• ABM Energo Engineers

Electric actuators for isolating & regulating duty

These are manufactured in a wide range by Auma India Limited, in collaboration with Werner Riester GmbH Co KG of Germany, leaders in the field of valve and damper automation. These actuators can also be equipped with integral starters in electronic version called E-Pac series. These starters are modular in construction consisting of power, control and the starter modules. The modular approach coupled with plug-in connection between the mainframe actuator and the E-Pac unit ensures easy maintenance and interchangeability at site. Salient features include PCBs with CMOS ICs to ensure high noise immunity and low power consumption, DIP switch programming to customise the actuator according to site requirements, opto-couplers to ensure isolation of customer command signals, fault annunciation relays for common faults, optionally for individual faults and local LEDs for both status and fault annunciation which can be seen through a view port. The E-Pac series provides many protection features with options like automatic phase correction, instantaneous reversal protection, anti hammer protection, single phasing protection, thermoswitch trip, thermal overload relay trip, etc. For regulating duty applications, solid-state starters (thyristors) can be provided.