Beijing Leader & Harvest Electric Technologies Co., Ltd.

Variable Frequency Drive

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HARSVERT Variable Frequency Drive (VFD)

FVS Variable Frequency Drive
Regenerative Variable Frequency Drive with an Active Front End for synchronous motor
HARSVERT-FVS series VFD can improve greatly the reliability of the system.
1. Characteristics:
PWM rectifier technology. Energy can flow bi-directionally between power grid and the motor;
Vector control for synchronous motor;
Strong start up with load in low speed, start torque can reach to 150% rated torque; the response time of dynamic torque: less than 150ms;
Speed-adjusting range: 500:1; static speed precision 0.1%;
Input current harmonic: <3% (comply with standard IEEE519);
Input power factor: >0.95(>20% load);
Output current harmonic: <2.5%; output DC component: <1%;
Efficiency ≥96% at full load(including the phase-shifting transformer)
Bypass the faulty power cell automatically( OPTIONAL FUNCTION);
VFD will continue running in light failure;
Smoothly soft start with the start current of less than the rated current of the motor;
VFD can work well with the new exciter or the existing one of the user;
VFD can control accurately the excitation current of the exciter;
VFD can control automatically the excitation current of the exciter to reduce the heat loss of the motor.

2. Application
HARSVERT -FVA series VFD are applicable to start the synchronous motor with the load, big torque fluctuation, high precision of speed-adjustment, frequent acceleration and deceleration, or require the regenerative energy, such as:
(1) Regenerative energy: Lift, Rolling mill.
(2) Big load fluctuation: Compressor, Wind tunnel.
Large start torque: Lift, Rolling mill, Mixer, Conveyor.

As a professional AC drive manufacturer and supplier, Leader & Harvest provides not only FVS series VFD, but also FVA series, HARSVERT A series and HARSVERT VS series VFDs. Our company has passed ISO9001 and ISO14001 certificates. Our reliable products are widely used in electric power, petrochemistry and paper making industries.
Our company is situated at Beijing, with airport, deepwater dock and highway nearby. Transportation is very convenient, thus helping reduce your international purchasing cost. Welcome you to visit our company! We are looking forward to cooperating with you!

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Variable Frequency Drive
  • A VFD HARSVERT-A series VFD is a masterpiece of outstanding performance and high reliability, which is widely used for the energy-saving application of the normal motors of fans, pumps ...
  • VA VFD Input current harmonic: <3% (comply with standard IEEE519);
    Input power factor: >0.95(>20% load);
    Output current harmonic: <2.5%; output DC ...
  • VS VFD Vector control for the speed-adjustment of synchronous motor;
    Start ability for starting the synchronous motor with load;
    The response time of dynamic torque: less ...
  • FVA VFD Auto re-start after the recovery of main medium voltage;
    Fly-start at any rotating speed;
    Bypass the faulty power cell automatically( OPTIONAL FUNCTION) ...