Features

• CM-EFS Voltage Window Monitoring Relay - Single Phase AC/DC. The voltage window monitoring relay CM-EFS.2 can be used for the simultaneous monitoring of over- (>U) and undervoltages ( ;U) in single-phase AC and/or DC systems. Depending on the configuration, one c/o contact each or both c/o contacts in parallel can be used for the over- and undervoltage monitoring. The voltage to be monitored (measured value) is applied to terminals B-C. Open- or closed-circuit principle as well as an adjustable ON A or OFF tripping delay are configurable. Monitoring of DC- and AC voltages from 3-600 V RMS measuring principle One device includes 4 measuring ranges: 3-30V; 6-60V; 30-300V; 60-600V Over- and undervoltage monitoring ON-or OFF-delay configurable Open- or closed circuit principle configurable Latching function configurable Thresholds for Umin and Umax adjustable Fixed hysteresis of 5% Tripping delay TV adjustable 0; 0.1-30s 1x2 c/o contacts (common signal) or 2x1 c/o contact (separate signals for Umin and Umax) 22.5mm width 3 LED's for status indication