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Application of Soft Start Device in Induced Draft Fan

Author: Site Editor     Publish Time: 2020-06-06      Origin: Site


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Project Info

Load type: induced draft fan

Rated voltage: 10KV

Motor rated current: 54A

Number of motor poles: 6 poles

High voltage soft start model: CMV-900-10

On-site parameter setting

Starting voltage: 65%

Current limit multiple: 4 times

Startup time: 20

After several on-site debugging, the test machine was successful when the initial voltage was 65% and the current limit was 400%.


Fan loads are light loads for inverters, but heavy loads for soft starters, especially centrifugal fans.

Generally, it is recommended to amplify a power segment in the selection of such loads. When debugging such loads, it should be noted that the current limit multiple cannot be too low, generally between 3.5-4.5 times according to the load conditions. Such loads have the characteristics of large starting current and long starting time when starting.

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