Beijing Leader & Harvest Electric Technologies Co., Ltd.

Company Brief: Leader & Harvest is a professional variable frequency drive manufacturer in China, providing VFD, which is also known as AC driver and medium voltage frequency inverter. Variable frequency drive is mainly used for adjusting or changing the frequency of alternating currents applied to electrical motor. Our VFD systems are available in different voltage and current ratings. The voltage range is of 3.3kV, 4.16kV, 6.6kV, 10kV and even higher. With the features of stable performance, high efficiency, safe and reliable use, as well as environmental protection and energy saving, our frequency converters are increasingly used in a wide range of industries, such as electric power, metallurgy, petroleum, petrochemistry, cement, mining, and more. VFD is especially used for controlling motors equipped in discharge fan, water pump, air compressor, etc.

Contact us

Beijing Leader & Harvest Electric Technologies Co., Ltd.

Address: South Zone of Industrial Park, Yangfang, Changping District, Beijing, P.R.China
Zip Code: 102205
Tel: +86-10-69764859
+86-10-69764466
Fax: +86-10-69765220
E-mail:
intsales@mediumvoltagedrive.com

Home » Variable Voltage Variable Frequency Inverter

Variable Voltage Variable Frequency Inverter

    2. A Variable Voltage Variable Frequency Inverter HARSVERT-A series VVVF 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, compressors, mills, conveyors and lifts ...
    2. VA Variable Voltage Variable Frequency Inverter Input current harmonic: <3% (comply with standard IEEE519);
      Input power factor: >0.95(>20% load);
      Output current harmonic: <2.5%; output DC component: <1% ...
    2. S Variable Voltage Variable Frequency Inverter HARSVERT-S series VVVF supplies perfect speed-adjustment for the synchronous motor and accurate excitation current control for the exciter. It improves the reliability and reduces the cost of the retrofit by using VVVF on synchronous motor ...
    2. VS Variable Voltage Variable Frequency Inverter 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 than 150ms ...
    2. FVS Variable Voltage Variable Frequency Inverter 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 ...
    2. FVA Variable Voltage Variable Frequency Inverter Speed sensor-less vector control: speed-adjusting range: 100:1; static speed precision: 0.5%; start torque: 150% rated torque; the response time of dynamic torque: less than 200ms;
      Speed close loop vector control: speed-adjusting range: 500:1; static speed precision: 0.1% ...