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    75 hp (55 kW) VFD, 3 Phase 230V, 440V, 480V

    $2,591.20
    75 hp (55 kW) VFD with low cost, three phase 230V, 440V, 480V variable frequency drive with good performance, RS485 available, V/F & vector control, brand new direct sale by manufacturer.
    SKU: GK3000-4T0550G
    Free shipping
    Delivery date: 6-12 days

    75 hp (55 kW) heavy duty variable frequency drive for energy savings, three phase 230V, 440V, 480V for choice.

    Specification:

    Basics Model GK3000-4T0550G
    Capacity 75 hp (55 kW)
    Shipping weight 40 kg
    Dimension 560*320*269 mm
    I/O Feature Rated current 112 A
    Input voltage 3 phase 230V /440V /480V AC ±15% (Optional)
    Input frequency 50Hz/ 60Hz
    Output voltage 3 phase AC 0~input voltage
    Output frequency 0.00~400.00Hz
    Over load capacity 150% of rated current for 1 minute, 180% of rated current for 3 seconds
    Control Feature Control mode V/F control;
    Sensorless vector control;
    Communication RS485
    Speed regulation 1:100
    Start torque 150% of rating torque at 1 Hz
    Speed control accuracy ≤±0.5% of rating synchronous speed
    Frequency precision Digital setting: max frequency x± 0.01%;
    Analog setting: max frequency x± 0.2%
    Frequency resolution Analog setting: 0.1% of max frequency;
    Digital setting: 0.01Hz
    Torque boost Automatic torque boost, manual torque boost 0.1%~30.0%
    Interior PID controller Be convenient to make closed-loop system
    Automatic energy save running Optimize V/F curve automatically based on the load to realize power save running
    Automatic voltage regulation (AVR) Can keep constant output voltage when power source voltage varies.
    Automatic current limiting Limit running current automatically to avoid frequent over-current which will cause trip
    Environment Enclosure rating IP 20
    Temperature –10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
    Humidity 5%-95%, without condensation
    Altitude ≤1000m; VFD will be derated if above 1000m
    Impingement and oscillation Normal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
    Store environment –20℃~ +60℃; no dust, no corrosive gas, no direct sunlight

    Tips: Variable Frequency Drive Overload
    Overload is also one of the frequent failures of VFD. When meet with the problem, we should first analyze if the motor overloads or VFD itself overloads. Generally speaking, the motor has high overload capacity, as long as the VFD parameter is set properly, it will not appear motor overload. But the VFD overload capacity is relatively not high. It is easy to appear overload alarm. We can detect the VFD output voltage, output current, and detect circuit and other trouble points one by one for trouble shooting.
    For example, a 75hp VFD often displays "OL" when running.
    Analysis and maintenance: According to the response from customer, this VFD was originally used in the 50hp motor, but now it is used for 75hp motor without resetting any parameters, so the problem may be out on the parameters. After checking, set VFD limit current as 75hp motor rated current instead of 50hp, and finally the problem is solved.

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