MODEL : KET-4000T

Typical Wiring Diagram :

Model of KET- 4000T series inverter :

Technical  Features :

• Control mode: Sensor less vector control, V/f control, torque control
• Start-up torque: 0.5Hz/150% (SVC)
• Built-in DC reactor (from 18.5kW to 90 kW) to improve power factor and efficiency.
• Built-in breaking units (from 0.75kW to 15kW). If need to stop rapidly, please connect the brake resistance directly.
• Multi-step speed control: 16 steps can be set; PID control; Simple PLC.
• Offer 8 multi-functional digital inputs (PNP & NPN), 2 analog inputs, 2 relay output, 2 analog output, 1 open-collector output.
• AVR: Can output constant voltage automatically when input voltage is fluctuating. QUICK/JOG  function.
• Offer RS485 serial communication interface, adopts standard Modbus-RTU communication protocol.
• Oscillation suppression function.
• Over-torque detection function.
• Multiple frequency upper limit setting source.
• Dormancy and wake-up function.
• QUICK/JOG function: Users can look over the parameters which are different from the factory values.
• Speed Tracing Function: Smoothly start the running motor.
• Fault protections:

Protect from over current, over voltage, under voltage, over temperature, phase failure, over load etc.
Application :


• Fans & pumps
• Energy saving renovation of Central Air-conditioning System
• Water flood pump & fuel supply pump
• Energy saving renovation of air compressor
• Circular-water pump, constant water supply
• Musical Fountain