Number of starts/stops per hour when using VFDs
Number of starts/stops per hour when using VFDs
(OP)
There was an interesting remark within the "Starting a used 22kW motor" thread about having no restriction with the number of starts/stops when using VFDs. Could somebody comment on that? For example, when we bring in somebody to dynamically balance our fans which have 200 HP 4-pole motors, we are always cautious about not attempting more than 4 starts per hour, even though VFDs with slow acceleration curves are used in those fans. Could we safely make more than 4 starts per hour in that case? How many? Thanks...





RE: Number of starts/stops per hour when using VFDs
RE: Number of starts/stops per hour when using VFDs
Only gotcha is a lot of slow speed time would mean normal cooling is lacking a bit.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Number of starts/stops per hour when using VFDs
JRaef.com
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RE: Number of starts/stops per hour when using VFDs
RE: Number of starts/stops per hour when using VFDs
RE: Number of starts/stops per hour when using VFDs
RE: Number of starts/stops per hour when using VFDs