• Relay for control of the frequency of the voltage supply
  • Nominal frequency selectable either 50 Hz or 60 Hz
  • Adjustable bandwith between 1 to10 Hz
  • Reaction time selectable either 0,1 sek. or 1 sek.
  • 2-pole relay output
  • 230V AC supply

C-mac® frequency relay type RF20 is used for surveillance of the supply voltage frequency, for example together with generator controlling. By connections on the relay socket a nominal frequency of 50 Hz or 60 Hz is chosen and reactiontime either 0,1 sek. or 1 sek. 

At the built-in potentiometer the allowed deviation from the center frequency is set between +/- 0,5 Hz til +/- 5 Hz.

If the voltage supply is messured to be within the chosen tolerances, the relay is activated, and if the frequency rise or fall, the relay will deactivate after the preset reaction time. 

Mastervarenr. RF20
Mastervare No