Interested to Buy Any Domain ? << Click Here >> for more details...
In power generator sets, when they are coverted from 50hz
to 60hz, the kva rating after conversion increases. For
example, the manufacturer of a perkins 200kva @ 50Hz
generator set has mentioned it to become 220kva after
converstion to 60hz. What is the relation between the
frequency & the KVA rating. Any formula please.
- 3 Answers
- 7431 Views
- I also Faced
- E-Mail Answers
Answer Posted / kj
The main reason for the increase in the kva is that the
diesel engine produces more HP at 1800 rpm than at 1500 rpm.
This allows a higher kw output. The alternator can also
handle the higher current and therefore the kva is
increased. Note that the rated power factor stays the same.
This is because the amount of cooling air is increased at
the higher speed.
The increase in the EMF per turn allows a higher voltage to
be generated but this is reduced by the AVR reducing the
excitation. This has no effect on the kva capacity of the
generator set.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?
what is kondo syatem in eletrical traction
How do I calculate/select Droop CT ratio for various capacity of generators?
Given a collection of points P in the plane, a 1-set is a point in P that can be separated from the rest by a line; i.e. the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The maximum value of n1(P) over all configurations P of 19 points in the plane is 18
what is the min and max ohmic resistance for the earthing rod installed for lighting poles for street light network
What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?
How can a equal potential zone be carried out in conductors?
determine two methods to find loose connection in operational electrical system?
grr resistance & contrator malt continuous
Write a note on materials used as a fuse element.
how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids
anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?
Briefly describe means used by electricity suppliers to influence the flow of active and reactive power in power networks (one for each type)?
What is Plank's Law?
what is the difference between c power and U power acb breaker
