马达转速比.pdf

文档介绍：DCDC GEAREDGEARED
MOTORMOTOR CATALOGCATALOG ''98-401
DCDC MOTORMOTOR SPECIFICATIONSSPECIFICATIONS
SPEED AND LOAD CHARACTERISTICS
The relationship between torque vs speed and current is linear as
shown left;as the load on a motor increases, Speed will decrease.
The graph pictured here represents the characteristics of a typical
motor.
As long as the motor is used in the area of high efficiency (as
represented by the shaded area) long life and good performance can
be expected. However, using the motor outside this range will result
in high temperature rises and deterioration of motor parts.
If voltage in continuous applied to a motor in a locked rotor
condition, the motor will heat up and fail in a relatively short time.
Therefore it is important that there is some form of protection
against high temperature rises.
A motor's basic rating point is slightly lower than its maximum