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Smart Measurement Circuit Breaker
WSM6GZ-400 400A
Smart Measurement 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
  • Current
    400A
  • Uplink communication
    Built-in interconnection HPLC communication module, working frequency 0.7~12MHz
  • 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
  • Line loss calculation interval
    Minimum 15mins
  • Bluetooth
    Supports point-to-multiple communication
  • Storage capacity
    Maximum 32MBytes
  • Communication protocol
    Support DL/T 645-2007, DL/T 698.45 and other protocol
  • Local serial interface
    2 RS485, interfaces A1 and B1 are local maintenance ports; A2 and B2 are meter reading ports
  • Number of poles
    3P/3P+N
  • Rated working voltage
    AC400V
  • Rated insulation voltage
    AC1000V
  • Rated impulse withstand voltage
    8KV
  • Flying arc distance
    ≤50mm
  • Ultimate short-circuit breaking capacity
    50kA
  • Operating short-circuit breaking capacity
    35kA
  • Protective characteristic
    Three-stage protection : overload long delay, short circuit short delay and short circuit instantaneous
  • Overvoltage protection threshold
    Single phase 253V-286V
  • Undervoltage protection threshold
    Single phase 154V-187V
  • Mechanical life
    ≥8000 Tims
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