Three-phase voltage monitor monitors overvoltage and undervoltage between phases. In addition to its own supply voltage, the relay monitors undervoltage and overvoltage (separate setting). Each threshold has its own adjustable delay. If a voltage fault occurs, the corresponding relay (one undervoltage and one overvoltage output) opens after the delay set by the user. In the event of a phase failure, both relays open immediately without waiting for the delay. Approvals: UL and CSA.
