WWEHD Heavy Duty Reduced Voltage - Soft Starters


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WWEHD Heavy Duty Reduced Voltage

Soft Starters

Select the following tabs to view the product data.

  • Features

    • Three wire in, three wire out installation
    • Service Entrance Rated
    • Integral bypass contactors are standard on all sizes
    • Over current capacity : 500% for 60 seconds
    • Real-time thermal modeling and dynamic thermal register continuously caluculates motor operating temperature even when your motor is not running
    • Phase loss protection based on current and voltage
    • Separate across the line overload protection
    • Load loss trip (under current) with trip delay
    • Pre-start checks for shorted load prior to each start
    • Two programmable overload trip curves allow for the thermal capacity required to start the load while providing more closely matched overload protection during the run time
    • PTC thermistor input for use on motors with embedded PTC temperature sensors
    • Current imbalance trip and biasing of the thermal register
    • Electronic shear pin trip (overcurrent) with trip delay
    • Equipment ground fault trip and monitoring
    • Load loss trip (under current) with trip delay

  • Product Specifications

    Power Components
    • 6 SCRs in inverse parallel pairs for full phase angle soft start control
    • 1600V PIV rating on all units
    • RC snubber for dv/dt protection of each SCR pair

    Line Voltage Range
    • 200 to 480 VAC, 3 phase ± 10%-15%, 50/60 Hz

    Current Ratings
    • 18 to 1000A depending on unit selection
    • Range of each unit is 50-100% of maximum

    Start/Stop Control Choices
    • 2-wire START/STOP using dry contacts
    • Normally open interlock input (dry contact) for remote devices

    Ramp Control Choices (4 built-in)
    • Voltage Ramp
    • Voltage Ramp with Current Limit
    • CLT© Closed Loop Torque ramp (current ramp)
    • Current Step (current limit only)

    Ramping
    • Ramp times adjustable 1-120 secons
    • Current limit adjustable 200-600% of FLA

    Kick Start
    • 10-100% starting torque for 0.1-2 seconds

  • Technical Specifications
    Model HP @ 230V HP @ 460V Max FLA Dimensions (in.)
    WWEBCDSSRV12-25 15 25 48 37 x 15 x 12
    WWEBCDSSRV12-30 15 30 62 37 x 15 x 12
    WWEBCDSSRV12-40 20 40 78 37 x 15 x 12
    WWEBCDSSRV12-50 25 50 96 37 x 15 x 12
    WWEBCDSSRV12-60 30 60 112 37 x 15 x 12
    WWEBCDSSRV12-75 40 75 112 37 x 15 x 12
    WWEBCDSSRV12-100 50 100 160 48 x 33 x 16
    WWEBCDSSRV12-125 60 125 210 48 x 33 x 16
    WWEBCDSSRV12-150 75 150 210 48 x 33 x 16
    WWEBCDSSRV12-200 100 200 361 48 x 33 x 16
    WWEBCDSSRV12-250 125 250 450 48 x 33 x 16
    WWEBCDSSRV12-300 150 300 450 48 x 33 x 16
    WWEBCDSSRV12-400 200 400 550 48 x 33 x 16
    WWEBCDSSRV12-500 250 500 600 48 x 33 x 16
    WWEBCDSSRV12-600 300 600 900 92 x 36 x 30

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