GE Consumer & Industrial is offering Static Digital Frequency Relays, type SFF. These Static Digital Frequency Relays are specially designed and developed to operate, when the system frequency changes to a predetermined level. These Static Digital Frequency Relays can be set for over-, under-, or restore- frequency operation. These are available with various versions having one, two, or four frequency points. These frequency points are independently settable for function, frequency value, and output delay. These Static Digital Frequency Relays feature AC or DC control power, Easy set point setup and Drawout case. Static Digital Frequency Relays are used in Load shedding frequency schemes.
