Quanzhou Ausenist Technology Co., Ltd

Learn why ordinary capacitors and power-factor correction devices should not be connected to a pump VFD output and what buyers should check instead.

Learn when lower pump speed may reduce cavitation risk, why a VFD cannot repair poor suction design, and what evidence engineers should check.

Use YS620 or YS820 pump rotation to distribute operating hours while maintaining a clear service and standby strategy.

Audit a pump VFD supplier through application questions, documentation, testing, parameter control, support evidence and customization governance.

Check grid frequency, motor nameplate, pump curve, maximum speed and pressure before supplying YS620 or YS820 across 50Hz and 60Hz markets.

Learn how to select a constant pressure water pump VFD by voltage, motor power, pressure sensor, protection functions and multi-pump control requirements.

Compare 0.5-4.5V, 0-5V and 4-20mA feedback options for YS820 constant-pressure pump control.

Learn how the YS820 supports V/F control for asynchronous motors and vector control for permanent-magnet synchronous pump motors.