VS Variable Frequency Drive
VFD for synchronous motor in vector control
HARSVERT-VS series VFD can operate smoothly at vector control mode for the speed-adjustment of synchronous motor.
1. Characteristic
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
Speed adjusting range: 500:1, static speed precision: 0.1%;
Input current harmonic: <3% (comply with standard IEEE519);
Input power factor: >0.95( at the load of more than 20%);
Output current harmonic: <2.5%,output DC component: <1%;
Efficiency: ≥96% at full load(including 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
It is used for the cases of starting frequently with high precision of speed-adjustment, such as rolling mill, etc.

As an ISO9001 and ISO14001 certified frequency converter manufacturer in China, Leader & Harvest can provide full series of variable frequency drives, such as 3.3kV series VFD, 4.16kV series VFD, 10kV series VFD, etc. As a result of high efficiency, soft start of electric motor and reliable use, our VFDs are widely used in petroleum, cement and mining industries. In order to meet different applications of variable frequency drives, we also provide other series of variable frequency drives, such as A series, FVS series VFD, VA series, etc. Welcome customers all over the globe to choose our products. We sincerely welcome you to visit our company!