
A fixed-speed AC motor uses up several times as much energy during startup as it does when it is fully loaded. This has a number of effects:
substantial mechanical shock
Increased motor wear because to the added load's heat-producing effects over time.
Increases in power usage
During start-up, Darwin Motion VFD such as Micro Drive- Matrix 900, DR Matrix 350 / Solar Drive, DR Matrix 500, DR Matrix 680, DR Matrix 880 are used to gradually increase the motor speed at a controlled pace until the target speed is reached. This prevents power surges, reduces motor wear, and removes mechanical stress. A VFD may be more cost-effective than conventional soft start mechanical devices, like fluid couplings, depending on the size of the motor.
The controlled shutdown offered by a VFD is advantageous in reducing mechanical shock, just like a slow start-up.
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