Monitoring relay VRU3-28

Under voltage monitoring relays

DESCRIPTION

  • These units monitor a 3-phase 3-wire supply and operate relays if a phase-phase voltage goes below set levels. 
  • LEDs indicate power on and trip status. A relay with two changeover volt-free contacts is fitted.
  • Front panel controls allow selection of:
    • Under voltage trip levels.
    • nominated rated voltage.
    • differential voltage for operating hysteresis and time delay before a trip triggers a relay response.

TECHNICAL PARAMETERS

  • Operating frequency: 45-65 Hz.
  • Auxiliary supply voltage: 24V - 240 V AC/DC.
  • Trip time delay: Adjustable 0,5 to 10s.
  • Relay contact: 2x changeover, volt-free.
  • Dimensions: 90 x 52 x 64 mm.
  • Protection: IP40 (front panel), IP20 (terminals).

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Customer Centre

Reception

+420 800 100 671
elko@elkoep.com

Technical support

+420 573 514 242
support@elkoep.com