Stop/starting a 22kW
Stop/starting a 22kW
(OP)
Hello Is it ok to put a timer to stop and start 22kW? The boss whats a cheaper option and is wanting to put a timer in the current DOL cicuit to start and start the 22kW. He wants to run the motor for 15 mins and stop for 15mins continiously. My concern is with this affect the motor windings? and what would be the best engineering solution to achieve this?
Thank you in advance.
Thank you in advance.





RE: Stop/starting a 22kW
The people to ask this question of would be the motor mfr. we're it a NEMA design motor, there are standard charts depicting minimum cabilities for motors, but being that you describe it as 22kW, it's not likely a NEMA design, and I don't know if IEC specifies a similar design guide. I suspect there is one though, and someone here will know how to access it.
Still, I would imagine that it will also be based on the load inertia and/or acceleration time. You should get that info first.
"Will work for (the memory of) salami"
RE: Stop/starting a 22kW
Do I need to use two timers to have the stop/start continious operations? I guess similar to flip flop operation.
Regards
RE: Stop/starting a 22kW
You can try 2 timers but they might not work right.
RE: Stop/starting a 22kW
"Will work for (the memory of) salami"
RE: Stop/starting a 22kW
Once again thank you all for your porfessionalism.
Regards
RE: Stop/starting a 22kW
Link accessible from FAQ provides some info on repetitive starting limits for NEMA motors
http://www.joliettech.com/allowable_starts-interva...
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(2B)+(2B)' ?
RE: Stop/starting a 22kW