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Project Description

Pole Mounted Sensor

The LIQ35 is a reliable pole mounted solar powered line fault indicator (with battery backup) for use on three phase three wire, and SWER overhead line systems. The LIQ35 utilises a fault detection algorithm that adapts to network parameters and requires no configuration.

 Key features include:CHK LIQ351

  • Continuous fault indication;
  • Fault types: Permanent faults; Transient faults; Outage events; Closure events; Self-clearing faults (fault current without loss of voltage);
  • Patented adapting fault algorithm;
  • Dual magnetic field sensors for improved fault capture;
  • Voltage sensing to accurately identify outages and trips;
  • Time and data stamped event recording;
  • Recognition of line voltage return;
  • Two visual indicators displaying line status and most recent fault;
  • Inrush restraint to ensure only real faults are reported;
  • SCADA protocol compatible (DNP3); and
  • Advanced programmable options for maximum flexibility.

CHK LIQ35 architecture

Key specifications include:

  • Line voltage: 5kV to 145kV;
  • Rechargeable batteries: 4 x 2V, 2.5Ah Sealed lead-acid
  • Battery Life: up to 10 years;
  • Solar panel: 3V, 1W;
  • Operation without solar (no active communications): 45 days;
  • Operating temperature: -40°C to +85°C;
  • Altitude: 1800m;
  • Local communications: 2.4GHz spread spectrum 50m range (line of sight);
  • Integrated remote communications: Embedded 3G cellular (PCI Express Mini Card);
  • Ambient temperature sensor (optional): -40°C to +85°C;
  • LED indicator – visibility (daylight / night time): 50m/50m;
  • Weight: 2.2kg;



Download the datasheets and manuals for LIQ35 through our download centre

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