The Omega is a low cost Earth Fault relay that can be operated from from a Bowden Band C/T or a conventional cast resin core balance C/T. It has factory pre-set trip current, and trip delay, but a user selectable reset time of 3 or 6 hours. It can be powered by a replaceable long life Lithium battery giving a 15 year average life under normal operating conditions or it can a be powered from the incoming LV mains, in which case the option for LV supply reset is available. The OMEGA efi has a high intensity RED LED indicator and an alarm output relay. It also has manual controls for TEST & RESET.
OMEGA II efi – as per Omega apart from: