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Question
WAT IS MEANT BY COLD AND HOT START OF A MOTOR?? HOW DOES IT 
AFFECT A MOTOR'S PERFORMANCE??
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Cold start : Starting the motor when it is cold. Means when
motor stoped and starts after long delay, considered as
cold start. Techanically if motor thermal containt is less
than 50%, it is considered cold.

Hot start : When motor is hot and you give start. Means
stoping the motor and immediately restarting is hot
start.Techanically if the motor thermal containt is more
than 50% and a start is given to motor, it is a hot start.

Effect : Any start of motor will result in increase of
thermal containt. If motor is hot (hot start given) than
motor thermal containt further increase hence there will be
detorioration in the insulation and thus life of motor.
 
Is This Answer Correct ?    36 Yes 3 No
Avd
 
Answer
# 2
COLD : motor @ ambient temperature•
HOT : motor @ rated temperature for specific class and service factor.
 
Is This Answer Correct ?    0 Yes 4 No
Mohamed
 
 
 
Answer
# 3
cold start its first start of motor
when the first time u start the motor

hot start of a motor means
second start of motor , after first start of motor u stop
the motor and again u start the motor then motor condition
is hot thats why it is known is hot start

prformance ???
when u start at cold condition , motor takes more starting
current for getting in synchronus condition

and in hot condition motor is already hot thats y it's
starting easy then cold

 
Is This Answer Correct ?    15 Yes 28 No
Mrudang
 

 
 
 
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