7.4.2

•

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Technologie Business

o Calculate the speed of a induction motor, apply this formula:

Srpm = 120 x F
P

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
P
Srpm = 120 x 60
4
Srpm = 7200
4
Srpm = 1800 rpm

7.4.2

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7.4.2

1. o Calculate the speed of a induction motor, apply this formula: Srpm = 120 x F P 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 P Srpm = 120 x 60 4 Srpm = 7200 4 Srpm = 1800 rpm

Notes de l'éditeur