HRN3-81 | Voltage monitoring relays in 3P with adjustable levels

• The relay is designed to monitor undervoltage (HRN3-80), phase loss, sequence and asymmetry in 3-phase network.
• Power supply from the monitored circuit.
• HRN3-80: Monitors the drop below the lower voltage level (Umin).
• HRN3-80: The lower level of Umin is set in % of the selected range.
• Wide range of monitored voltage 208 – 480 V.
• Adjustable time delay (to eliminate short-term voltage drops).
• Measures true root mean square value of the voltage - TRUE RMS.
• Adjustable level of asymmetry with the option to turn it off.

Technical parameters

• Monitored range: AC 3× 208 – 480 V
• Output contact: 2x CO, 16 A
• Housing: 1-MODULE
• Power supply: monitored voltage
• Dimensions: 90 x 52 x 66 mm (3.5˝ x 0.7˝ x 2.5˝)