SPECS. OF ELECTRIC ACTUATORS

[ALEXFV]

In some catalogues of electric actuators, I have seen a column entitle "COS" and has some values, usually from 0.6 -0.9.

I can't found what is the mechanical meaning of this feature, and how it's related with the quality or benefits of an electric actuator.

Thanks in advance

 

[valvemover]

Dear Calfersoporte,

The abbreviation stands for Cosine it relates to the power factor of the electric motors.

The power factor is the relationship of active power (the part, which does the work by driving the output shaft) and the total power, which in addition to the active power, consists of the reactive power, which has been used to create the magnetic field inside the electric motor.

I see, halfway through writing this message that you have already received several responses.

In addition you can find many useful websites explaining this.

Good luck

AUMA Actuators

 

[NGiLuzzu]

Just for information: Italian electricians use to call that power factor "cosfì", because it is referred as the cosine of a figure usually represented by the Greek letter "phi" (?).

Bye, 'NGL