What is derating factor in Motor?

Answer Posted / touch2gobi

Derating Factor value depends upon the motor environment,

For example:

Motor design temp – 45 deg C

But motor location ambient temp 65 deg C (near any burner
or heat source)

So motor performance (rated power) will reduced due to
ambient temp.

For that motor manufacturer given Derating Factor value.

Ex:

Rated power = 45 kW

Derated power = 42 kW (Operating Temp – 50 deg C)

Is This Answer Correct ?    25 Yes 19 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?

1764


What is feed factor and its Importance in cement industry? How we can solve feed factor?.

3097


what is stroke check for field instument transmetter's & AOV's

1732


how to calculate range of level transmitter?

1781


Draw a P& ID showing – orifice flange, plate, dp transmitter, isolation & bypass valves and tubing.

1508






use of split range ? where it is used ? in which control loop it is used ?

1488


What is standard procedure of manual mapping in Radar type level transmitter?

1428


you are on site,the plant trips,you are approached by operations,what do you do?

1763


How to calibrate Field bus transmitter? procedure ?

1836


can you send remote seal interface level transmitter calculation steps for oil water saperator.

2169


State bernoulli’s application.

677


DEAR SIR/MADAM MY NAME IS ARKAPROVA BHATTACHARYYA.I AM A FRESHER INSTRUMENTATION ENGINEER.CAN YOU PLEASE SEND SOME QUESTION PAPERS OF GRADUATE ENGINEER TRAINEE EXAM OF DVC(DAMODAR VALLY CORPORATION).MY EMAIL IDs ARE arka_aec@rediffmail.com.

1463


I am using 971 Enraf radar level transmitter for LPG tanks ,the tank side indicator gives the error code 999999999FL can any body give me any diagnostic for this issue?

1778


Explain the use of hair spring in the pressure gauge.

670


Valve positioner and actuators in detail.

1388