Product Profile of Frequency Relays
ABB offers with various types of protection and control devices. ABB`s the SPAF frequency relays are specifically designed for protection against frequency abnormalities in generators, motors and network. There are mainly two types of frequency relays and they are:
1 SPAF 140 C - used for the protection of generators & other AC equipment against over and under frequency
2 SPAF 340 C - applicable for load shedding in situations where power consumption exceeds the available power of the network
