The HMCC-Drive -SWD variable speed drives (VSDs) includes many standard features to protect and control ESPs for variable-speed applications.

The HMCC-Drive -SWD series VSDs can be configurated with an integral output sine wave filter (SWD), typically used with ESPs. The sine wave filter is low pass frequency filter, which convert the rectangular PWM output signal of motor drives into a smooth sine wave voltage with low residual ripple. Sine wave filter is mainly used in combination with VSD to protect the motor against excessive voltage spikes and overheating. The filter also decrease acoustic switching noise levels and enable longer power cable layouts. Consequently, insulations stress and losses in AC motors are reduced, and therefore prolonging the motor lifetime.

Features:

HMCC Variable Speed Drive