Voltage monitoring relays in 3 Phase

DESCRIPTION

• It serves to monitor voltage, phase failure and sequence in switchboards, protection of devices in 3-phase mains.
• It is possible to set upper and lower level of monitoring voltage.
• Adjustable time delay eliminates short voltage peaks and failures in the main.
• Supplied from monitored voltage.
• Faulty state is indicated by red LED and by opening of output relay contact.
• Output contact 1 or 2 x changeover / SPDT 8 A / 250 V AC1.
• In case supply voltage falls below 60 %Un (UOFF lower level) relay immediately opens without delay.
• HRN-54: supply from all phases which means that relay is functional also in case when one phase is faulty.
• HRN-57N, 54N, 43N,: supply L1, L2, L3-N, means that relay monitors also failure of neutral wire.
• 1 or 3 MODULE, DIN rail mounting.

TECHNICAL PARAMETERS

• Phase failure: Yes
• Phase sequence: Yes / x
• Overvoltage: Yes
• Undervoltage: Yes
• Asymmetry: Yes / x
• Monitored range:  AC 3 x 172-287 V 
• Supply voltage: 1 or 2 x CO, 8 A
• Housing: 1 or 3 -MODULE
• Power supply: from monitored voltage or External