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    In order to upgrade the flexibility and expansibility of iWSN sensing module, the iWSN expansion module is developed to connect to the iWSN sensing module. By means of iWSN expansion modules, the iWSN sensing module can offer more current and temperature measurement channels. The iWSN expansion module is energized by iWSN sensing module so that there is no external power supply needed. For convenient setting up and maintaining the application, the iWSN expansion module provide removable screwed terminal block, wall-mount mechanism and magnet adsorption for installation, and also allows connecting different measurement range of CTs to fit various applications. More kinds of IO interface will be designed to rich the iWSN functionalities and unleash the power of iWSN sensing modules.

    1. iWSN sensor and iWSN-757P connection diagram
    • Supports multi-channel IO expansion
    • Allows connecting different measurement range of CTs in one expansion module
    • Powered by iWSN sensing module
    • Removable screwed terminal block for easy maintenance
    • Offers wall-mount mechanism and magnet for installation
    Models iWSN-757P
    Split-core CT Channel Number
    Split-core CT Type
    Φ16mm (100A), Φ24mm (200A), or Φ36mm (400A); 8 m wire
    Input Voltage
    Maximum 500VAC, 60 Hz
    ±3% or ±0.3A
    Channel Number
    Measurement Temperature
    0 °C ~ +80 °C
    ±2 °C
    Wall-mount or magnet adsorption
    Input Type
    iWSN sensing module provides power through the audio line.
    Power Consumption (Included iWSN-1110X)(*1)
    1-sec Tx Duty
    21 A
    10-sec Tx Duty
    13 A
    30-sec Tx Duty
    12 A
    60-sec Tx Duty
    12 A
    Fire Retardant Materials
    Dimensions (L x W x H)
    115 mm x 72 mm x 35 mm
    DIN-rail or magnet adsorption
    Operating Temperature
    0 °C ~ +45 °C
    Storage Temperature
    -20 °C ~ +50 °C
    Relative Humidity
    10 ~ 90% RH, Non-condensing
    (*1) The minimum current required in the AC cable for balancing module's power charging and power consumption
    iWSN-757P CR
    iWSN expandable sensing module(ROHS)
    Important Note:

    1. The iWSN series expansion module needs to be used with iWSN sensing module. Users can refer to the iWSN-1110X or iWSN-1120X series module according to their needs.

    2. The iWSN sensing module measurement information must be collected through the iWSN receiver. Users can refer to the iWSN-2200 or iWSN-2200-E module according to their needs.
    iWSN wireless 1 CT channel and 1 expansion interface sensing module(RoHS)
    iWSN data concentrator with RS-232/RS-485 serial port (RoHS)
    iWSN data concentrator with Ethernet port (RoHS)
    8 m 100A Φ16mm Split-Core CT
    8 m 200A Φ24mm Split-Core CT
    8 m 400A Φ36mm Split-Core CT
    5 m Magnetic plug thermistor
    5 m Metal plug thermistor
    2 m Black plastic plug thermistor
    5 m Black plastic plug thermistor