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      Smart Measurement Circuit Breaker
      WSM6GZ-250 250A
      WSM6GZ-250 250A smart measuring circuit breaker is an IoT-aware low voltage switch developed to enhance effective maintenance and monitoring of electric meters and reduce line losses, suitable for the construction of ubiquitous power IoT.
      Main functions and characteristics

      HPLC, Bluetooth, RS485 communication;

      High-precision AC sampling;

      Power supply relationship topology identification;

      Meter box management;

      Electricity theft warning;

      Power outage event reporting;

      Line loss analysis and judgment;

      Terminal temperature detection;

      Fault automatic diagnosis;

      Overvoltage protection, undervoltage protection, phase loss protection, Overload long delay, short circuit short delay, short circuit instantaneous three-stage protection function;

      Through the distribution area fusion terminal or TTU analysis and transmission of cloud data, the data can be viewed in real time and the circuit breaker can be controlled on SGCC platform, and big data analysis can be used to help the construction of power grid operation and distribution, economic efficiency improvement, and power safety.


      Technical parameter
      • 1、Current
        250A
      • 2、Uplink communication
        Built-in interconnection HPLC communication module, working frequency 0.7~12M
      • 3、AC sampling accuracy
        The measurement error of electrical parameters such as voltage and current is better than 0.5% , and the measurement accuracy is 0.5s
      • 4、Line loss calculation interval
        Minimum 15mins
      • 5、Bluetooth
        supports point-to-multipoint communication
      • 6、Storage capacity
        Maximum 32MBytes
      • 7、Communication protocol
        Support DL/T 645-2007, DL/T 698.45 and other protocol
      • 8、Local serial interface
        2 RS485, interfaces A1 and B1 are local maintenance ports; A2 and B2 are meter reading ports
      • 9、Number of poles
        3P/3P+N
      • 10、Rated working voltage
        AC400V
      • 11、Rated insulation voltage
        AC1000V
      • 12、Rated impulse withstand voltage
        8KV
      • 13、Flying arc distance
        ≤50mm
      • 14、Rated ultimate short-circuit breaking capacity
        36kA
      • 15、Rated operating short-circuit breaking capacity
        25kA
      • 16、Protection characteristics
        Three-stage protection : overload long delay, short circuit short delay and short circuit instantaneous
      • 17、Overvoltage protection threshold
        Single phase 253V-286V
      • 18、Undervoltage protection threshold
        Single phase 154V-187V
      • 19、Mechanical life
        ≥8000 Tims
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