Question about Haier Washing Machines
I was talk about that...
how to check motor RPM?
so the solution is....
Calculating Motor Speed:
A squirrel cage induction motor is a constant speed device. It cannot operate for any length of time at speeds below those shown on the nameplate without danger of burning out.
To Calculate the speed of a induction motor, apply this formula:
Srpm = 120 x F
Srpm = synchronous revolutions per minute.
120 = constant
F = supply frequency (in cycles/sec)
P = number of motor winding poles
Example: What is the synchronous of a motor having 4 poles connected to a 60 hz power supply?
Srpm = 120 x F
Srpm = 120 x 60
Srpm = 7200
Srpm = 1800 rpm
Posted on Jun 24, 2009
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Posted on Jan 02, 2017
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