Articles: USC Application-Electrical Frequency

Page 01  
Article Description / Summary
UAP0033 Under and Over Mains Frequency Alarm
Operating Description The RLY 1 contact of the USC701 opens when the frequency is above SP1 a set value (such as 52Hz). The RLY 2 contact of the USC701 opens when the frequency is below SP2 a set value (such as 48Hz). If the two contacts are ...