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Data Acquisition and Transmission Device

Data Acquisition and Transmission Device

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Data Acquisition and Transmission Device

The device is intended for acquisition, processing, storage of data from meters and transfer of information via information channels to the upper level in automated systems for comprehensive utility metering. It is installed as a part of a three phase smart electronic meter and functions together with it.

An important function of the device is time measuring and clock synchronization on the metering devices in automated systems for comprehensive utility metering.

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Description

Features:

  • 2 GPRS/LTE modules, micro-USB, Wi-Fi module;
  • Provides event log storage and information transfer on request;
  • Multilevel protection against unauthorized access: mechanical seals, an eight-digit password for access, encryption of information during its transmission through the interfaces of the lower and upper levels of the device;
  • Linux based operating system;
  • Storage depth: 6144 readings per interval.
    •  

    Data acquisition performed:

    • active consumed and generated power;
    • reactive consumed generated power;
    • general power;
    • amount of tariff storages (operated/all) for active consumed/generated power;
    • tariff accumulations according to each tariff for active consumed/generated;
    • voltage (average value during the integration period);
    • current intensity (average value during the integration period);
    • frequency (average value during the integration period);
    • event log.

    Sends information to the upper level about the following events:

    • overlimit of active power;
    • current threshold crossing along neutral channel;
    • consumer electrical installation deviation;
    • network frequency deviation;
    • voltage state – overlimit; failure;
    • power overlimit 1/2/3;
    • critical time deviation or forbidden time unsynchronization;
    • low consumption for a long time;
    • the device is open – terminal block /housing;
    • magnet or reverse magnet interference (for meters including magnetic field sensors); 
    • radio field interference (for meters including radio-frequency electromagnetic field sensors);
    • password blocking;
    • low battery;
    • data transfer via communication channel during the emergence the event was performed;
    • flag of requirement of schedule group change;
    • reason for the latest unscheduled automatic start.  
    Characteristics
    Technical specifications
    Main
    Supply voltage
    5 - 26 V
    Current
    no more than 1A
    Power consumption
    no more than 6 W
    Number of connected metering devices
    up to 2048
    Data transmission radio interfaces
    - Wi-Fi standard IEEE 802.11b / g / n;
    - GSM: 900 / 1800MHz;
    - LTE: 2100MHz (B1) / 1800MHz (B3) / 2600MHz (B7) / 900MHz (B8)
    / 800MHz (B20)
    The degree of protection of the case according to GOST 14254
    IP51
    Electric shock protection class
    III
    Saving the clock and keeping the calendar when the supply voltage is cut off
    at least 10 years
    Saving data archive
    at least 10 years
    Installation
    Installation
    Meters of accuracy classes 0.5S and 0.5S / 0.5 are designed to be connected to the mains through measuring current transformers, meters of accuracy classes 1 and 1/1 can be produced in two versions: connected to the network directly or through measuring current transformers.