i-Credit 511 is a single-phase, two-element smart meter with independent recording of multiple loads for enhanced tariff flexibility.

The modular design incorporates the latest cellular communications technologies to ensure reliable data transfer, making it the ideal solution for AMI applications.

The meter supports remote firmware upgrade, allowing metering and communications features and functionality to be updated in the field. This enhances flexibility, and makes the utility’s investment future-proof.

i-Credit 511 is an integrated part of Secure’s Liberty Online advanced metering solution.



    • Domestic and small commercial premises
    • Single/two-element, with load control and ripple control receiver
    • Advanced metering infrastructure (AMI)
    • Suitable for co-generation metering applications
  • Key Feature

    • Meets the minimum services specification, as per Australian National Electricity Rules (NER)
    • Multi-operator (roaming) SIM support ensures maximum network coverage
    • Peak and off-peak tariff management
    • Remote de-energisation and energisation (direct and arm)
    • Alerts to identify potential anomalies
    • Ripple control receiver (build option)
    • QoS (Quality of Supply) monitoring
    • Hot-swappable communication module


  • Benefits

    • Improved billing cycle and accuracy through remote reading
    • Facilitates supply remote connection/disconnection
    • Better information on usage to help manage energy consumption
    • Power outage management – quick response time
    • Remote reconfiguration
    • Low cost of ownership
      • Removes cost of manual read
      • Designed for long life in the field
      • Remote firmware upgrade
    • Specification
    • Electrical

      Connection type

      1-phase, 2-wire, active neutral, direct connected

      Load terminals

      Variant specific

      Measuring elements

      1 or 2 element

      Rated voltage (Vnom)

      230 V AC, -20% to +15%

      Maximum voltage

      300 V (L-N) continuous

      Impulse withstand

      12 kV, 9 J, as per NMI M6


      50 Hz ±5%

      Current range

      10 A Ib, 100 A Imax


      Class 1.0 (Active Energy), Class 2.0 (Reactive Energy)

      Metrology lamp

      Two configurable metrological LEDs for active and reactive energy



      AS 62052.11, AS 62052.21, AS 62053.21, AS 62053.23, NMI-M6

      Exceeds minimum services specification, as per the National Electricity Amendment (expanding competition in metering and related services)

      Data storage capacity

      Energy/demand load profile

      395 days (per channel) at 30-minute interval (configurable), up to 12 channels

      Quality of supply (QoS) parameters

      90 days (per parameter) at 30-minute interval (configurable), up to 12 parameters, including average voltage, current, phase angle, temperature


      Mains supply contactor

      100 A

      Auxiliary load control

      31.5 A and/or 60 A


      Dimensions (W x H x D)

      145 mm x 190 mm x 112 mm

      145 mm x 230 mm x 112 mm (with 35 mm terminal block cover)

      145 mm x 245 mm x 112 mm (with 50 mm extended terminal cover)


      Flame-retardant polycarbonate


      Terminal cover, meter main cover, configuration button, communication module


      1.6 kg (approx.)



      ANSI optical port (AS 62056.21)


      3G/4G WAN, build option for ZigBee® HAN

      Multi-operator (roaming) SIM support

      Hot-swappable field interchangeable module, sealable separately


      AES128 encryption, cover open detection

      Outage notification

      Last gasp power supply (build option)


      Real-time clock type

      Crystal or mains-synchronised

      Power source

      Mains supply


      Lithium battery, 15-year life


      AS 62054.21


      Ingress protection

      IP 53

      Insulation class

      Protective class II


      Operating: -10 °C to +60 °C

      Storage: -25 °C to +70 °C


      95%, non-condensing