Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / iamdon
Rating of an alternator or any electrical machine/apparatus
reflects its load carrying capability without
overheating.Temperature rise (major threat to insulation)
arises due to internal loss within the machine.
These internal losses include
1)Copper loss and
2)Core or Fe loss(hysterisis and eddy)
Both losses are independent of power factor.
Copper loss is directly proportionl to I*I
Core loss is function of voltage applied/genetated.
Both loss must be taken into account for rating
purpose.Which is only possible with taking VA which has
nothing to do with power factor.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 45 Yes | 12 No |
Post New Answer View All Answers
I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?
why ahould you show client/engineer activities clearly on the project plan
Battery is a voltage source? give one example of current source and why?
HOW TO CALLICULATE RESITENCE,REACTANCE AND IMPEDENCE VOLTGE OF TRANSFORMER 13.33 KVA 144/240 VOLTS 93/56 A WITH FORMULA
my name is venkat .i have good percentage in my academics(ssc 86, intermediate 83 b.tech 73) my question 1..after completion of my ssc i joined in bpc but i didnt got rank in emcet so i completed MPC in one year compartmentally ..so here what am expect question from this background?
How Self works in DG set
what will be happen if earth point is being used for as a neutral point for raw power , and same will be used for ups earthing
Define peak time.
what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?
what will happen if i connect 12 volt battery with 24 volt battery charger.
How to test REF relay testing for LV panel as per Kahramaa standard?
How to calculate energy stored in an inductance?
How to know of any cable size if there are not written on cabl?
why do we need to use 3c+3e cable, normally i select only 3c+e cable and i think it is enough. pls explain the usefull of 3e cable ( in this project the earthing system is well done)
What is a diode?
