C&s protection & control ltd. Manufactures ac voltage relay [bu1-ac]. It facilitates undervoltage and overvoltage supervision. It includes variations of un: 110v ac/230v ac/ 400v ac. Setting ranges are: u<: 0.7-1.1 x un; u>: 0.9-1.3 x un; t: 0-10s; hyst. : 2-10%; freq.: 45-66 hz. Versions available are: for undervoltage: bu1-u [a.C.]; for overvoltage: bu1-o [a.C.]; for under & over voltage: bu1-uo [a.C.]. It finds applications in voltage supervision of 1-phase or 3-phase systems. It also provides effective protection of equipment like generators, shunt capacitors, induction motors etc. Against damage due to over/ under voltage.
